Water Cooled Screw Chiller - Roskill Air Solutions LTD

2003-5C2001

Water Cooled Screw ChillerFlooded, 340~1780kW

Inverter, 120~450RT

Full Falling Film, 70~470RT

Com

mer

cial

Air

Cond

ition

ers 2

020

Commercial Air Conditioner Division

Midea Group

Add.: Midea Headquarters Building, 6 Midea Avenue, Shunde, Foshan, Guangdong, China

Postal code: 528311

cac.midea.com www.midea-group.com

Note: Product speci�cations change from time to time as product improvements and developments are released and may vary from those in this document.

2019 Launched the Midea self-developed magnetic bearing centrifugal chiller

2017 Developed the large capacity air cooled scroll chiller

2016 Acquire an 80% stake in Clivet

2015 Launched the inverter direct-drive centrifugal chiller and magnetic bearing centrifugal chiller. An international strategic platform has brought Midea Group,

Carrier Corporation and Chongqing General Industry Group together in the chiller business.

2008 Developed the Smart Star new-generation Semi-hermetic centrifugal chiller

2007 Won the �rst Midea centrifugal chiller project overseas

2006 Launched the �rst VFD (Variable Frequency Drive) centrifugal chiller

2004 Acquired MGRE entered the chiller industry

2001 The R134a (LC) series centrifugal chiller was named as a key national product

1999 Entered the CAC �eld

Midea CAC is a key division of the Midea Group, a leading producer of consumer appliances and provider of heating, ventilation and air conditioning solutions. Midea

CAC has continued with the tradition of innovation upon which it was founded, and emerged as a global leader in the HVAC industry. A strong drive for advancement

has created a groundbreaking R&D department that has placed Midea CAC at the forefront of a competitive �eld. Through these independent e�orts and joint

cooperation with other global enterprises, Midea has supplied thousands of innovative solutions to customers worldwide.

There are four production bases: Shunde, Chongqing, Hefei and Italy.

MCAC Shunde: 38 product lines focusing on VRF, Split Products, Heat Pump Water Heaters, and AHU/FCU.

MCAC Chongqing: 14 product lines focusing on Water Cooled Centrifugal/Screw/Scroll Chillers, Air Cooled Screw/Scroll Chillers and AHU/FCU.

MCAC Hefei: 11 product lines focusing on VRF, Chillers and Heat Pump Water Heaters.

Clivet S.p.A: 50,000m2 workshop in Feltre and Verona, covering products such as ELFO system, hydronic, WHLP, packaged, split and close control and so on.

Midea CAC

03 04

MCAC Learning Academ

y

MCAC Learning Academ

y

Midea CAC Learning Academy aims to provide training to the sales personnel as well as technical personnel in order to increase

the utilization for your Midea CAC equipment. Once you have purchased equipment from Midea CAC, taking care of the

equipment is topmost priority. Midea CAC Learning Academy o�ers training courses to learn �rsthand from the manufacturer

what it takes to get the best out of your Midea CAC product. The goal of Midea CAC Learning Academy is to provide product

speci�c training, safe work procedures and expertise in carrying out the installation and maintenance of Midea CAC products as

well as teaching the main selling points in order to help the sales people sell the Midea CAC products with ease.

Objective

Products: VRF, M-Thermal, Chillers and Terminals

After Sales- Service Trainings: These trainings are dedicated for the After Sales/ Service personnel in order for them to better

carry out the installation, commissioning and maintenance of Midea CAC products. Technical person and engineers from

di�erent parts of the world are invited to take part in these trainings.

Main Courses O�ered:

1. Product Electric Control and Refrigerant System

2. Control Systems

3. Installation and Commissioning Demonstration

4. Troubleshooting and Maintenance

Global Technical Trainings

Registration:

You can contact your respective Midea contact point to provide you

with the complete schedule about the global technical trainings as well

as how to register for these trainings.

Training Certi�cates:

The attendees for Global trainings are provided a training certi�cate

highlighting the courses discussed in the training, signed by Mr. Jason

Zhao, General Manager of Midea CAC Overseas Sales Company.

Highly Skilled Trainers: The trainers for various courses by Midea CAC

Learning Academy are expert people with vast experiences in their

�eld. Most of them have a deep insight about the global HVAC market

and help the attendees to better understand the CAC products.

Training Centers

Our world class training centers provide knowledge and skills necessary to e�ciently deploy Midea CAC technologies.

The training centers include dedicated laboratories to provide hands-on experiences with various systems, components and

controls to refresh and enhance the skills of your sales, design and installation and service teams. Right now we operate our

trainings from the below two locations:

Address: Midea CAC Training Center, 2nd Floor, Building 6, Midea Global Innovation Center, Beijiao , Shunde, Foshan, China

Pin- 528311

The Midea CAC Training Center is situated 30 kilometers from Baiyun Guangzhou International Airport.

Products: VRF, M-Thermal

2. Chongqing Midea Training CenterAddress: No. 15, Qiangwei Road, Nan'an District, Chongqing, China

Chongqing Midea Training Center is 35 kilometers from Chongqing International Airport.

Products: Centrifugal Chiller, Screw/Scroll Chiller and Terminals

1. Midea CAC Training Center

MCAC Learning Academy

Chiller trainingVRF training M-Thermal training

The training courses by Midea CAC Learning Academy are divided into the following two categories with di�erent targeted

audiences for each.

Design and Application Trainings: The design and application trainings for various products are basically for the sales

personnel selling Midea CAC products in order to give them basic understanding about the main features. The trainings are

conducted on a global level inviting sales engineers, technical engineers, consultants and project designers from di�erent parts

of the world.

Main Courses O�ered:

1. Introduction to main Selling points and Features

2. Installation and Commissioning

3. Control Systems

4. Selection Software

Products: VRF, M-Thermal, Chillers and Terminals

12 Flooded Water Cooled Screw Chiller

18 Inverter Water Cooled Screw Chiller

25 Full Falling Film Water Cooled Screw Chiller

30 Options

31 Intelligent Management

33 Reference Projects

Index

Series

Flooded

Capacity (kW)

√ √ √ √ √ √√ √ √ √ √ √

1055 1200 1300 1410 1620 1780340 440 540 720 805 890Series

Capacity (RT)

Inverter

Full Falling Film

√

√

390

√

420

√

430

√

450

√

470

√

√

230

√

√

270

√

√

300

√

330

√

350

√

360

√

√

150

√

170

√

180

√

√

200

√

210

√

220

√

70

√

90

√

100

√

110

√

120

√

130

Product Lineup05 06

Product Lineup

Index

High E�ciency

Stable and Reliable

Accurate Capacity Adjust

Intelligent Control

Environmentally Friendly

Water Cooled Screw Chiller

Features

The full series of products are AHRI certi�ed.Certi�ed in accoordance with the AHRI Water-Cooled Water-Chilling and Heat

Pump Water-Heating Packages Using Vapor Compression Cycle Certi�cation

Program, which is based on AHRI Standard 500/590 (I-P) and AHRI Standard

5 5 1 / 5 9 1 ( S I ) . C e r t i � e d u n i t s m a y b e fo u n d i n A H R I D i re c t o r y a t

www.ahridirectory.org

AHRI Certi�ed

The motor is set at the compressor gas inlet, and the adopted refrigerant cooling method works together with the unique inlet

�ow path design to ensure full cooling of the motor. The motor does not send out heat to the equipment room, so the heat

dissipation of the chiller does not need to be considered for ventilation of the equipment room.

The compressor motor adopts large capacity design, and the motor directly drives the rotor to achieve very high e�ciency.

Enclosed Motor Design

It adopts the double-side reinforced condenser tube to

optimize the tube bundle arrangement design in the

condenser.The unique design of the built-in oil separator helps address

the problem of lubricating oil separation.

This product implements uniform gas transmission

without any heat transmission blind spots.

The product optimizes the subcooler design, improves the

supercooling temperature, and reduces the pressure loss of

subcooler, improving heat exchange performance e�ciency.

New Condenser

Cooling water outlet

Cooling water inlet

Built-in oil separator

Cooler

The unit features an electronic expansion valve and ori�ce plate to control the refrigerant for the evaporator and the water temperature accurately.The electronic expansion valve is from a leading international brand. It is characterized by quick response, rapid regulation, and a large capacity adjust range.

Accurate Cooling Capacity Control

EXV

Liquid refrigerant

Chilled water outlet

Chilled water inletTube bundle

Ori�ce

(Condenser outlet)

Gas refrigerant

Reliable Oil System

Built-in oil separator for thecondenser

Built-in three-stage oil separatorfor the compressor

Advanced oil control system

Liquid outlet

of condenser

Condenser gas inlet

Internal oil separator

Midea water cooled screw chiller has an oil circuit control system that adopts leading technology, which ensures stable operation of the unit.

This system features a di�erential pressure-type oil supply. All the moving parts in the compressor can stay well lubricated without an external oil pump.

Compressor

Angle valve

Solenoid valve

Sight glass

Water outlet

Ori�ce plateElectronic expansion valve

Water inlet

Dry �lter Straight ball valve

Water outlet

Water inletEvaporator

Venturi

Oil �lter

Condenser

Oil supply

Oil return

The �rst oil separation: The compressor is provided with a three-stage oil separator to ensure low oil content.

The second oil separation: The built-in high e�ciency oil separator for the condenser controls the oil separation e�ciency to

a value above 99.99%, enabling the system to realize normal oil return under both partial load and full load, ensuring reliable

and stable operation of the system and increasing the unit operating range.

Double oil return system: This system adopts oil return through oil separation and Venturi injection. Oil return is implemented

through the Venturi tube injection of high pressure gas, and oil is not stored in the evaporator. An oil heater is set in the unit.

The control system preheats the lubricating oil according to the unit's status to maintain optimal viscosity, optimizing the

lubrication function. The external oil �lter can be replaced easily.

Quiet OperationThe sound level is as low as 65 dB(A) when the unit operates with a partial load.

A standard shock-absorbing cushion is con�gured between the compressor foot and the metal support, achieving a good

damping e�ect.

The built-in discharge mu�er for the compressor cuts o� transmission from the sound source.

Built-in discharge muffler design for compressorShock-absorbing cushion installation diagram

Muffling structure design

M20

Compressor foot

Shock-absorbing cushion

Base

09 10

Water Cooled Screw

Chiller

Water Cooled Screw

Chiller

Temperature change of conventional control

Temperature change in prospective control

Intelligent load control: Real-time load changes are predicted according to historical data, and the real-time load is

prospectively revised to avoid frequent �uctuations in the unit water temperature.

Safe and intelligent unit control: The system monitors the trends of change in the unit's parameters and adjusts the operating

status of the unit as necessary to ensure safe operation.

Intelligent failure response: When the unit fails, in addition to executing the corresponding protective measures, the fault

parameters are recorded for manual inspection and troubleshooting.

Intelligent Control

Interface DisplayController: MIC

Interface display: 7-inch touch screen

Communication interface: RS485

Communication protocol: Modbus-RTU

Protection measures: more than 20 protection

measures include the power supply, compressor,

pressure, and temperature.

Note: The interface and display content vary with each model. Please refer to the actual product.

Environmentally Friendly RefrigerantR134a environmentally friendly refrigerant achieves high cooling e�ciency,without destroying the ozone layer.

The refrigerant complies with the Montreal Protocol.

R22 refrigerant unit R134a refrigerant unit

Comparison of total ozone destruction (relative to R22)

100%

50%

0

Environmentally friendly

and non-toxic32%

0%

R134a refrigerant New refrigeranttechnology.

R134a refrigerant

Protection of the ozone layer

Preventing

global warming

R134a does not contain Chlorine, which destroys the ozone layer. Its Ozone Depletion Potential (ODP) value is 0.

Implementing high e�ciency and ensuring energy saving

Controlling the discharge of refrigerant in the atmosphere when it is discarded Controlling the discharge of refrigerant in the atmosphere during useControlling the increase of hydro�uorocarbon (HFC)

Reducing the negative e�ects caused by discharge of refrigerant gas to the atmosphere

Reducing CO2 emission

AHRI Certi�ed


New Condenser


Reliable Oil System

Quiet Operation

Intelligent Control

Environmentally Friendly Refrigerant

AHRI Certi�ed


New Condenser


Reliable Oil System

Quiet Operation

Intelligent Control


11

Water Cooled Screw

Chiller

Flooded Water Cooled Screw ChillerFlooded Water Cooled Screw Chiller

Adjustable capacity valve

Built-in oil separator

Direct motor drive

Stepless adjustment or four stageadjustable capacity.

One-way valve to avoid rotate in reverse during long time stop.

Patented line design, highvolumetric e�ciency, smoothoperation.

Refrigerant-cooled motor, noexpelled heat.

Semi-hermetic compressor,moveable bolts, easy maintenance.

High precision �lter, oilseparation e�ciency up to99.5%.

High mechanical e�ciency, low compressor speed, low noise levels.

Refrigerant discharge

Twin screw rotor

Hermetic motor

Semi- hermetic structure

High e�ciency �ooded evaporator, high heat exchange e�ciency.The water box at both ends can be disassembled to facilitate maintenance.The refrigerant distributor can distribute refrigerant evenly, optimize the temperature �eld and improve the evaporation temperature, so as to improve the operating e�ciency.Specially designed ba�e plate to avoid the compressor suction with liquid, improving the reliability of the unit.

Gas refrigerant


Chilled water inlet

EXV Liquid refrigerant

Tube

Ori�ce

Advanced twin-rotor screw compressor

Stable and Reliable

Flooded Evaporator

Multiple Guarantees

Intelligent control of unit safetyThe system monitors the unit parameter's changing trends and progressively adjusts the operating status of the unit to ensure safe operation.Powerful protection function for improved safetyThe unit is provided with powerful protection measures to improve operation safety and reliability.Strict factory testAll the units have undergone strict testing before delivery. Only the water pipe and power supply need to be connected during installation.

The capacity adjust system consists of the capacity adjust slide valve, solenoid valve and oil pressure piston.

Four stage capacity adjust

Stepless capacity adjust

Capacity requirement

Capacity output

100%

100%

75%

75%

50%

50%

25%

25%

Stepless Capacity Adjust

LS B LG *** / M C F B

Water cooled chiller

Compressor structure typeB: Semi-hermetic

Compressor structure typeLG: Screw type compressor

Nominal cooling capacity (kW)

Flooded evaporator

Series code

Refrigerant typeC: R134a, Omit for R22

Design sequence code

Nomenclature

Product Structure

High e�ciency screw compressor

Electrical control panel

Touch screen panelFlooded type evaporator

Emergency button

Fast connection victaulic �ttingShell and tube condenser

Relief valve

13 14

Flooded Water Cooled Screw

Chiller


Chiller

-

Speci�cations

340 440 540 720 805 890 1055 1200 1300 1410 1620 1780

RT 95.81 124.0 152.2 202.9 227.0 250.9 297.5 338.4 366.5 397.3 457.0 502.0

kW 336.9 436.1 535.0 713.3 798.0 882.1 1046 1190 1289 1397 1607 1765

kW 59.74 76.69 93.63 126.9 143.7 154.4 185.9 205.3 230.7 248.7 290.2 304.9

W/W 5.638 5.687 5.715 5.619 5.554 5.713 5.627 5.796 5.587 5.617 5.536 5.788

W/W 6.516 6.559 6.604 6.506 6.412 6.608 6.492 7.290 7.037 7.125 6.971 7.299

Qty 1 1 1 1 1 1 1 2 2 2 2 2

Type

Starting method

Type /

Charge amount kg 130 145 160 230 230 250 360 330 330 340 400 400

A 103.2 132.4 161.6 219.2 248.1 266.6 320.91#: 153.8

2#: 200.6

1#: 172.8

2#: 225.4

1#: 214.7

2#: 214.7

1#: 250.5

2#: 250.5

1#: 263.2

2#: 263.2

A 154.6 208.0 235.0 301.0 369.0 362.8 396.81#: 235.0

2#: 301.0

1#: 235.0

2#: 301.0

1#: 301.0

2#: 301.0

1#: 369.0

2#: 369.0

1#: 362.8

2#: 362.8

A 315.0 415.0 479.0 650 845.0 753.3 888.31#: 479

2#: 650

1#: 479

2#: 650

1#: 650

2#: 650

1#: 845

2#: 845

1#: 753.3

2#: 753.3

Water �ow m3/h 52.04 67.38 82.66 110.2 123.3 136.3 161.6 183.8 199.1 215.8 248.2 272.7

Pressure drop kPa 24.3 26.1 25.9 22.0 26.9 26.8 26.5 65.0 75.0 65.0 74.5 78.2

Water pipe connection mm DN150 DN150 DN150 DN200 DN200 DN200 DN200 DN200 DN200 DN200 DN200 DN200

Water �ow m3/h 65.62 84.86 104.0 139.0 155.8 171.5 203.8 230.9 251.4 272.3 313.8 342.6

Pressure drop kPa 24.7 25.7 26.5 24.5 26.1 28.1 24.6 69.0 80.5 78.2 78.0 79.7

Water pipe connection mm DN150 DN150 DN150 DN200 DN200 DN200 DN200 DN200 DN200 DN200 DN200 DN200

Length mm 3550 3550 3550 3580 3580 3580 3650 4650 4650 4650 4650 4650

Width mm 1200 1200 1200 1400 1400 1400 1500 1500 1500 1500 1600 1600

Height mm 1830 1843 1843 1980 2030 2082 2535 2290 2290 2290 2390 2390

kg 2458 2963 3054 3585 3699 3864 5078 6527 6527 6710 7270 7573

kg 2648 3193 3324 3975 4099 4294 5618 7167 7167 7420 8060 8413

Max. operating current

Starting current

Condenser

Unit dimension

Shipping weight

Running weight

Evaporator

Refrigerant

R134a

Model (LSBLG***/MCF-B)

Cooling capacity

Power input

COP

IPLV

Compressor Semi-hermetic screw compressor

Wye-Delta

Capacity adjust range Stepless

Power supply 380V-3Ph-50Hz

Rated current

Note:1. Performance and e�ciency are based on AHRI 550/590-2018.Evaporator conditions: water inlet=54°F (12.22°C), water outlet=44°F (6.67°C), fouling factor=0.00010h-ft2-°F/Btu (0.0176m2. °C/kW);Condenser conditions: water inlet=85°F (29.44°C), water outlet=94.3°F (34.61°C), fouling factor=0.00025h-ft2-°F/Btu (0.0440m2. °C/kW).2. The design's max working pressure for both the evaporator and condenser are 1.0MPa, but higher pressure can be customized if required.3. As a result of the continuous improvement of the product, the above parameters may be changed, please refer to the software selection and the actual product.

DimensionSingle compressor

Dual compressor

Unit: mm

Unit: mm

Model A B C D E F G H J K LWater

inlet/outlet

LSBLG340/MCF-B 3550 1200 1830 2850 1100 411 260 250 600 260 541 DN150

LSBLG440/MCF-B 3550 1200 1843 2850 1100 411 260 250 600 260 541 DN150

LSBLG540/MCF-B 3550 1200 1843 2850 1100 411 260 250 600 260 541 DN150

LSBLG720/MCF-B 3580 1400 1980 2850 1300 441 300 300 700 300 591 DN200

LSBLG805/MCF-B 3580 1400 2030 2850 1300 441 300 300 700 300 591 DN200

LSBLG890/MCF-B 3580 1400 2082 2850 1300 441 300 300 700 300 591 DN200

LSBLG1055/MCF-B 3560 1500 2535 2850 1400 443 350 325 750 375 618 DN200

Model A B C D E F G H J K L

LSBLG1300/MCF-B 4650 1500 2290 3850 1400 443 350 325 750 350 618 DN200

LSBLG1200/MCF-B 4650 1500 2290 3850 1400 443 350 325 750 350 618 DN200

LSBLG1410/MCF-B 4650 1500 2290 3850 1400 443 350 325 750 350 618 DN200

LSBLG1620/MCF-B 4650 1600 2390 3850 1500 468 350 350 800 350 643 DN200

LSBLG1780/MCF-B 4650 1600 2390 3850 1500 468 350 350 800 350 643 DN200

Waterinlet/outlet

15 16


Chiller


Chiller

Coolingwater inlet

Chilledwater inlet

Coolingwater outlet

Chilledwater outlet

L

BEJ

K

H

F

C

G

AD

Coolingwater inlet

Chilledwater inlet

Coolingwater outlet

Chilledwater outlet

L

BEJ

K

H

F

C

G

AD

Space Layout

600

600

1000

3200

Inverter Water Cooled Screw ChillerAHRI Certi�ed


New Condenser


Reliable Oil System

Quiet Operation

Intelligent Control


Unit: mm

AHRI Certi�ed


New Condenser


Reliable Oil System

Quiet Operation

Intelligent Control


17


Chiller

Inverter Water CooledScrew Chiller

No Impact of the Power GridThis product utilizes inverter start with a smooth starting current of less than the Wye-Delta starting current, without any current impact,

which prolongs the service life of motor.

Multiple GuaranteesIntelligent control of unit safetyThe system monitors the unit parameter's changing trends and progressively adjusts the operating status of the unit to ensure safe operation.

Powerful protection function for improved safetyThe unit is provided with powerful protection measures to improve operation safety and reliability.

Strict factory testAll the units have undergone strict testing before delivery. Only the water pipe and power supply need to be connected during installation.

Energy Saving Principle of Inverter AdjustThe inverter screw unit regulates the cooling capacity by reducing the frequency. The COP of the partial load is better than the �xed

frequency unit, which greatly enhances the energy e�ciency.

Accurate ControlInnovative swirl ori�ce plate throttling technology:

The �ow resistance increases when the gas content of refrigerant is high before the ori�ce plate, which greatly improves the cooling capacity attenuation

caused by hot gas bypass under the partial load.

When the condensation pressure is low and the refrigerant in front of the ori�ce plate is liquid, the liquid �ow rate can be accelerated to increase the liquid pply.

Note: Let's use 7/32°C operating conditions as an example.

Operating load (%)

COP

(kW

/kW

)

Inverter screw

Fixed frequency screw

6%

6.5%

40% 50% 60% 70% 80% 90% 100%

5.5%

30%

4.5%

20%

4.0%

10%

Inverter energy saving areas

Midea's independently-developed volume ratio optimization control technology integrates the characteristic curves of a compressor, inverter and motor, and maximizes

the performance and reliability of the inverter screw compressor. The maximum isentropic e�ciency is 76%, far higher than other adjustment methods.

Vi Optimizing Inverter Technology of Midea's Independently-developed Inverter Twin Screw

Start When the motor starts at a low speed, the slide valve rapidly rises to a middle position, and the unit does not operate at the low slide valve position.

Loading The motor speed increases, and the slide valve looks for the best Vi position. The built-in algorithm then analyzes the operating parameters online, optimizes to adjust the slide valve position and motor speed, and �rst lifts the slide valve. Then, the motor speed matches the load accurately.

Load reduction

The motor slows, and the slide valve looks for the best Vi position. The built-in algorithm then analyzes the operating parameters online, optimizes to adjust the position of the slide valve and motor speed, and �rst lowers the slide valve. Then the slide valve assists in energy regulation.

Stop The motor slows and the slide valve drops to the lowest position. The motor stops after its speed reaches the minimum setting value.

The dual-compressor unit is designed with the parallel system of double compressors, and the total heat exchange area is used to greatly improve

the operation e�ciency when the single compressor operates. (Customization of non-parallel system accepted)

First created full falling �lm evaporator reduces the refrigerant charge amount.

Spray falling �lm technology allows the refrigerant to form a liquid �lm on the surface of the e�cient heat exchange tube to implement �lm state evaporation

and greatly improve the heat exchange e�ciency of the evaporator.

The refrigerant distributor is specially designed to avoid uneven liquid distribution and prevent local pipe dryness. (Patent No.: 201120134421.5)

Compressor 1 Compressor 2

Condenser

Electric control panel

Evaporator

Parallel Dual Compressor Design

Full Falling Film Evaporation Technology

Structural diagram of the full falling �lm evaporator

Refrigerant

liquid �lm

E�cient heat exchange tube

19 20

Inverter Water Cooled Screw

Chiller


Chiller

101 5

Across-in-lineSolid state soft startWye-Delta start

Inverter start

Nominal operating current

Cur

rent

Time(s)

Product StructureMicrocomputer control systemProviding auto-diagnosis, adjustment, security protection, remote control and other functions

Flexible sinking design has made a breakthrough in the single plane shape, featuring a lively and futuristic look

7-inch color display screen

Easy-to-read unit status; convenient to operate and maintain

EvaporatorSpecially designed liquid equalization plate to optimize the temperature �eld and achieve optimal heat exchange e�ciency

CompressorThe compressor screw rotor adopts a new pro�le, and the vapor injection and enthalpy enhanced technology can greatly enhances e�ciency

Lifting hole

Lifting hole retained to make handling convenient

Water inlet and outlet located on the same sideEasy installation, cleaning and maintenance

CondenserThis product features a double-sided reinforced high-e�ciency condenser tube to further improve heat exchange e�ciency

Electric control panel

Nomenclature

E series

Water cooled

Cooling only

Screw compressor

High e�ciency

Nominal cooling capacity: RT

Inverter

S C W E 100 VH

Speci�cations21 22


Chiller


Chiller

SCWERTkWkW

W/WW/WQty

TypeStartingmethod

Type /Charge amount kg

1# 2# 1# 2# 1# 2# 1# 2# 1# 2# 1# 2# 1# 2#A 107.1 161.9 148.1 148.1 166.2 166.2 185.1 185.1 172.8 222.1 212.5 212.5 228.2 228.2

A 154.3 228.3 228.3 228.3 228.3 228.3 228.3 228.3 228.3 272.6 272.6 272.6 272.6 272.6

A <107.1 <161.9 <148.1 <148.1 <166.2 <166.2 <185.1 <185.1 <172.8 <222.1 <212.5 <212.5 <228.2 <228.2

Water �ow m3/hPressure drop kPaWater pipe connection mmWater �ow m3/hPressure drop kPaWater pipe connection mmLength mmWidth mmHeight mm

kgkg 7340 7406Running weight 6036 6435 6544 6655 7100

2235Shipping weight 5562 5914 5989 6060 6431 6622 6665

2184 2184 2184 2184 2235 22351800 1800 1800 1900 1900 1900

DN200

Unit dimension4650 4650 4650 4650 4652 4675 46751800

DN200 DN200 DN200 DN200 DN200 DN200Condenser

304.664.3 67.1 64.2 64.3 67.6 66.8 67.1

DN200 DN200 DN200180.9 205.6 223.7 243.5 266.7 291.0

231.5 241.255.7 55.1 56.0 55.8 55.1 56.0 56.4Evaporator

143.5 163.9 177.5 192.4 211.7

DN200 DN200 DN200 DN200

Power supplyCompressor number

Rated current


Starting current

Refrigerant280 300 300 310 330 335 340

R134a

380V-3Ph-50Hz

Inverter

Capacity adjust range

Compressor

2 2 2 2 2 2 2

Single compresser 15%-100%, Dual compressor 8%-100%

Semi-hermetic screw compressor

IPLV 8.632 8.945 8.914 8.905 9.106 9.149 9.069COP 5.640 5.853 5.646 5.494 5.669

260.1 279.3928.6 1061 1149 1245 1370 1498

5.760 5.590

430HV 450HV

Cooling capacity264.1 301.8 326.7 354.1 389.7 426.1 444.1

Model 270HV 300HV 330HV 360HV 390HV

1561Power input 164.6 181.3 203.4 226.6 241.7

SCWE 120HV 150HV 180HV 200HV 230HVRT 117.1 150.9 179.5 192.7 223.5kW 411.8 530.7 631.0 677.6 785.8kW 76.36 91.10 112.9 120.8 140.4

W/W 5.393 5.825 5.589 5.608 5.598W/W 8.563 9.160 8.558 8.797 8.920Qty 1 1 1 1 1

TypeStartingmethod

Type /Charge amount kg 130 160 175 180 210

1# 1# 1# 1# 1#A 124.8 148.8 184.4 197.4 229.3

A 154.3 206.1 228.3 245.8 272.6

A <124.8 <148.8 <184.4 <197.4 <229.3

Water �ow m3/h 63.63 81.99 97.49 104.7 121.4Pressure drop kPa 59.2 58.9 59.5 60.0 58.7Water pipe connection mm DN150 DN150 DN150 DN150 DN200Water �ow m3/h 80.75 102.9 123.1 132.1 153.2Pressure drop kPa 54.9 57.7 55.4 54.7 54.7Water pipe connection mm DN150 DN150 DN200 DN200 DN200Length mm 3513 3513 3538 3538 3538Width mm 1600 1600 1800 1800 1800Height mm 2000 2000 2130 2130 2130

kg 2763 3289 3595 3629 3802kg 2943 3501 3870 3919 4122Running weight

Shipping weight

Unit dimension

Condenser

Evaporator

Power supplyCompressor number

Rated current


Starting current

RefrigerantR134a

380V-3Ph-50Hz

Inverter

Capacity adjust range


Single compresser 15%-100%, Dual compressor 8%-100%

IPLVCOP

Cooling capacity

Model

Power input


Single compressor

Dimension

Dual compressor

Space Layout

ModelDimension

SCWE120HV~SCWE230HV

S/mm

600

600

T/mm

600

600

Z/mm

3200

4200

Y/mm

1000

1000

T

z

s

Y

Unit: mm

23 24


Chiller


Chiller

Cooling wateroutletC

G

F

B

ADE

Chilledwater outletChilledwater inletCooling water

inlet

HJ

Cooling wateroutlet

Chilledwater outletChilledwater inletCooling water

inlet

C

G

F

B A

DE

HJ

SCWE270HV~SCWE450HV

Model A B C D E F G H J

SCWE120HV

SCWE150HV

SCWE180HV

SCWE200HV

SCWE230HV

3513

3513

3538

3538

3538

1600

1600

1800

1800

1800

2000

2000

2130

2130

2130

2850

2850

2850

2850

2850

1500

1500

1700

1700

1700

411

411

441

441

441

671

671

741

741

741

411

411

436

436

441

671

671

696

696

741

Unit: mm

Model A B C D E F G H J

SCWE270HV

SCWE300HV

SCWE330HV

SCWE360HV

SCWE390HV

SCWE430HV

SCWE450HV

4650

4650

4650

4650

4652

4675

4675

1800

1800

1800

1800

1900

1900

1900

2184

2184

2184

2184

2235

2235

2235

3860

3860

3860

3860

3860

3860

3860

1700

1700

1700

1700

1800

1800

1800

443

443

443

443

468

468

468

793

793

793

793

818

818

818

443

443

443

443

468

468

468

793

793

793

793

818

818

818

Unit: mm

Filter

A �lter is installed at the suction end to �lter the inlet gas thoroughly.

Built-in relief valve to implement overpressure protection.

One-way valve

A one-way valve is set in the discharge chamber to avoid the reverse rotation of the compressor after being stopped for a long time.

The enclosed motor design avoids heat emission to the equipment room; the e�cient motor reaches an e�ciency of 96% to 97%.

Bolts can be removed, so maintenance is convenient.

Gas supply �ow path design

Flow path design

The twin-screw rotor with patented pro�le has high gas transmission e�ciency.

Twin-screw rotor

Motor

Semi-hermetic

structure

Relief valve

The product adopts a semi-hermetic twin-rotor screw compressor, a screw rotor using a patented pro�le undergoing the

optimized compression process with a German KAPP gear grinding machine, and the surface has been laser-hardened to

implement dynamic and static balance correction.

The twin-screw rotors adopt the asymmetric patent design of �ve to six teeth, reaching the machining precision of micron level

and ensuing low noise and long service life.

The compressor adopts the bearing of international famous brand SKF, which has a long service life, ensuring that the

continuous operation time of the chiller is at least 50000h.

Cutting-edge Screw Compressor Technology

Capacity requirement

Capacity output

Four stage capacity adjust

Stepless capacity adjust

100%

100%

75%

75%

50%

50%

25%

25%

The capacity adjust system consists of the capacity adjust slide valve, solenoid valve and oil pressure piston.

Stepless Capacity Adjust

Structural diagram of the full falling �lm evaporator

Refrigerant liquid �lm

E�cient heat exchange tube

First created full falling �lm evaporator reduces the refrigerant charge amount.

Spray falling �lm technology allows the refrigerant to form a liquid �lm on the surface of the e�cient heat exchange tube to implement �lm state evaporation and greatly improve the heat exchange e�ciency of the evaporator.

The refrigerant distributor is specially designed to avoid uneven liquid distribution and prevent local pipe dryness. (Patent No.: 201120134421.5)

Full Falling Film Evaporation Technology

Independent circuit design for greater reliabilityThe system has an independent circuit design. The double compressor system employs the double independent circuit design and the systems do not a�ect each other, minimizing the impact of shutdown due to a failure and greatly enhancing the unit’ s reliability.Powerful protection function for improved safetyThe unit is provided with powerful protection measures to improve operation safety and reliability.Strict factory testAll the units have undergone strict testing before delivery. Only the water pipe and power supply need to be connected during installation.

Multiple Guarantees

Full Falling Film Water Cooled Screw ChillerAHRI Certi�ed


New Condenser


Reliable Oil System

Quiet Operation

Intelligent Control


Full Falling Film Water Cooled Screw ChillerAHRI Certi�ed


New Condenser


Reliable Oil System

Quiet Operation

Intelligent Control


26Full Falling Film

Water Cooled Screw

Chiller


Specications

S C W E -100 H A

Screw compressor

Cooling only

Water cooled

E series

Design code

High e�ciency

The nominal cooling capacity is 100RT

Nomenclature

Product Structure

High e�ciency screw compressor

Touch screen panel Full falling �lm type evaporator

Emergency button

Relief valve

Fast connectionvictaulic �tting

Shell and tube condenser

Electronic expansion valve

Electrical control panel

SCWE 130H-A 150H-A 170H-A 200H-A 230H-A

RT 130.8 150.8 170.6 194.0 231.9

kW 459.9 530.1 599.8 682.2 815.3

kW 78.06 88.70 99.9 113.1 141.2

W/W 5.892 5.976 6.002 6.029 5.773

W/W 7.237 7.377 7.495 7.533 7.662

Qty 1 1 1 1 1

Type

Starting method

Type /

Charge amount kg 120 140 160 180 200

A 134.8 153.1 172.5 195.3 243.8

A 208.0 235.0 260.0 301.0 369.0

A 415 479 506 650 845

Water �ow m3/h 71.06 81.90 92.7 105.4 126.0

Pressure drop kPa 70.7 64.2 62.7 65.7 68.9

Water pipe connection mm DN150

Water �ow m3/h 89.1 102.4 115.9 131.7 158.3

Pressure drop kPa 65.2 71.4 70.9 72.1 73.1

Water pipe connection mm DN200

Length mm 3500 3500 3500 3550 3550

Width mm 1200 1200 1200 1400 1400

Height mm 1807 1807 1841 1941 1991

kg 2810 2879 3003 3293 3471

kg 2990 3089 3223 3573 3781

470H-A

465.0

1635

282.9

5.779

7.933

2

380

1#: 244.22#: 244.2

1#: 369.02#: 369.0

1#: 8452#: 845

252.6

58.8

317.5

79.2

4650

1600

2343

7016

7766

Unit dimension

Shipping weight

Condenser

Running weight

Evaporator


Wye-Delta

Capacity adjust range Stepless

RefrigerantR134a

Power supply 380V-3Ph-50Hz

Rated current


Starting current

Model

Cooling capacity

Power input

COP

IPLV

70H-A

69.91

245.8

42.33

5.807

7.772

1

75

73.1

114.9

202

47.69

71.5

37.98

69.0

3500

1200

1741

1871

2001

90H-A

87.27

306.8

51.24

5.988

7.432

1

90

88.5

136.6

258

47.41

67.7

59.29

68.4

3500

1200

1741

2239

2389

100H-A

94.93

333.8

56.34

5.924

7.848

1

95

97.3

154.6

315

51.57

59.4

64.58

68.8

3500

1200

1791

2276

2426

110H-A

108.0

379.8

64.09

5.926

7.849

1

105

110.6

176.9

378

58.67

63.8

73.48

66.7

DN150

3500

1200

1791

2322

2482

210H-A

210.3

739.4

128.2

5.769

7.528

1

180

221.3

335.0

683

114.2

64.1

143.6

69.5

3550

1400

1991

3416

3716

220H-A

217.3

764.2

128.0

5.969

8.219

2

210

1#: 110.52#: 110.5

1#: 176.92#: 176.9

1#: 3782#: 378

118.1

50.6

147.7

61.7

4600

1500

2188

5057

5497

270H-A

264.8

930.9

155.6

5.981

7.752

2

270

1#: 134.42#: 134.4

1#: 208.02#: 208.0

1#: 4152#: 415

143.8

59.1

179.9

79.0

4600

1500

2238

6005

6465

300H-A

301.4

1060

177.4

5.975

7.789

2

280

1#: 153.12#: 153.1

1#: 235.02#: 235.0

1#: 4792#: 479

163.7

56.6

204.8

77.7

4600

1500

2238

6124

6644

350H-A

342.3

1203

200.4

6.006

7.929

2

300

1#: 173.02#: 173.0

1#: 260.02#: 260.0

1#: 5062#: 506

185.9

58.8

DN200

232.4

77.6

4600

1500

2238

6338

6908

390H-A

381.7

1342

228.4

5.876

7.857

2

320

1#: 197.22#: 197.2

1#: 301.02#: 301.0

1#: 6502#: 650

207.4

56.7

260.0

77.4

4600

1500

2238

6485

7095

420H-A

421.9

1484

256.9

5.774

7.820

2

350

1#: 221.82#: 221.8

1#: 335.02#: 335.0

1#: 6832#: 683

229.2

59.8

288.1

72.4

4650

1600

2343

6890

7600

27

Full Falling Film W

ater Cooled Screw Chiller

28Full Falling Film

Water Cooled Screw

Chiller

DimensionUnit: mm

Model

SCWE70H-A

SCWE90H-A

SCWE100H-A

SCWE110H-A

SCWE130H-A

SCWE150H-A

SCWE170H-A

SCWE200H-A

SCWE210H-A

SCWE230H-A

A

3500

3500

3500

3500

3500

3500

3500

3550

3550

3550

B

1200

1200

1200

1200

1200

1200

1200

1400

1400

1400

C

1741

1741

1791

1791

1807

1807

1841

1941

1991

1991

D

2850

2850

2850

2850

2850

2850

2850

2850

2850

2850

E

1100

1100

1100

1100

1100

1100

1100

1300

1300

1300

F

411

411

411

411

411

411

411

441

441

441

G

671

671

671

671

671

671

671

741

741

741

H

411

411

411

411

411

411

411

436

436

436

J

671

671

671

671

671

671

671

696

696

696

Model

SCWE220H-A

SCWE270H-A

SCWE300H-A

SCWE350H-A

SCWE390H-A

SCWE420H-A

SCWE470H-A

A

4600

4600

4600

4600

4600

4650

4650

B

1500

1500

1500

1500

1500

1600

1600

C

2188

2238

2238

2238

2238

2343

2343

D

3860

3860

3860

3860

3860

3860

3860

E

1400

1400

1400

1400

1400

1500

1500

F

443

443

443

443

443

468

468

G

793

793

793

793

793

818

818

H

443

443

443

443

443

468

468

J

793

793

793

793

793

818

818

Dual compressor

A

D

Cooling water inlet



Chilled water inlet

BE

C

F

G

H

J

Unit: mm

A

D

Chilled water inlet


Cooling water inlet


C

B

E

H

J

F

G

Space LayoutUnit: mm

3200

1000

600

600

Optional

400/415V-3Ph-50Hz, 380/440/460V-3Ph-60Hz

Flange

1.6MPa, 2.0MPa

Spring isolator

BACnet IP, BACnet MS/TP (RJ-45 port)

Up to 55°C

√

√

√

√

√

√

Standard

380V-3Ph-50Hz

Victaulic

1.0MPa

Rubber pad

Modbus-RTU (RS485)

45°C

×

×

×

×

×

×

Options

Items

Power supply

Water inlet/outlet connection

High pressure water box

Anti-vibration

Communication protocol

High leaving condenser water temperature

40mm 20mm Insulation

Witness performance testing

Remote control & monitor panel

Midea Chiller Plant Control

Midea Smart Cloud platform

QuickView

Tube automatic cleaning system

Note: For other options, please contact with our engineers.

29 30

Full Falling Film W

ater Cooled Screw Chiller

Options

3231

Intelligent Managem

ent

Intelligent Managem

ent

Midea Chiller Plant Control is a group control system for commercial air conditioning that includes air conditioners, water pumps, cooling towers, terminals and related ancillary equipment (including valves, sensors etc.) as the underlying control objects. Based on a powerful control logic program and communication network, it establishes a 3-layer control framework that integrates the equip-ment, control and management layers. Midea Chiller Plant Control contains a unique operation module from Midea that is designed to save energy, so in addition to automated stable operations for the various devices, this product also improves and optimizes user management capabilities, reduces labour costs, boosts operational e�ciency, and lowers the overall energy consumption for commercial air conditioning.

BMS-IOTCloud

Energy e�ciency

check

Energy consumption

analysis

Recommendation of energy

saving solution

System monitoringA

Group control panelEnergy-saving strategy:

MFA adaptive control, multi-chiller load

optimization distribution, system load

prediction

Web client Web client

Network fan coil

thermostat

DDC controller for

modular AHU

3rd-party

instrument

3rd-party

instrument

Midea chiller

3rd-party

equipment

Terminal control segmentControl segment of the equipment room

Main functions:

● Unattended equipment room

● Stable and reliable control system, protecting the customer's investment

● One-click system startup and shutdown

● System operation schedule setting

● System energy consumption monitoring

● Equipment maintenance reminders

● Provides ample control logic for HVAC system equipment rooms in various forms

● Balanced operation of devices in polling mode reduces the device failure rate

● Multiple practical control modes

● Automatic switching to a standby device if a device fails

● System energy-saving optimization control

● Uniform control of terminal air system devices

Intelligent ManagementMidea Chiller Plant Control

Midea Chiller Plant Control Workstation

BAC net IP

Midea's QuickView smart software control system is a type of smart software specially developed by Midea. It features high real-time e�ciency, stability, reliability, a high degree of visualization, and strong scalability. It can implement a wide variety of scenarios, such as real-time data monitoring of units, unit equipment management, remote control, curve display, data storage, alarm query, fault diagnosis, uploading data to the cloud, and external data analysis, greatly improving the unit's operation management e�ciency and reducing the human input and operation and maintenance costs.

"Midea Smart Cloud" remote Internet monitoring service1

Cloud data storage2

Working condition data analysis3

Quick fault diagnosis4

Viewing monitoring data through the Web browser5

Chillers

Max. 600m

No.1

No.2

No.100

…

Y

X

Y

X

Y

X

Y

X

(CCM21 cloud platform module)

QuickView

Midea Smart Cloud platform

Midea has built a �awless internet-based remote monitoring system, which provides customers with outstanding cloud service via advanced cloud service technologies and the internet. Customers can connect Midea air conditioner to the global remote monitoring system through Midea's IMU smart data acquisi-tion terminal, so that professionals can help the customer to implement remote

fault diagnosis and analysis, and receive early warning alarms for failures, ensuring the equipment's optimal operation. Customers authorized by Midea can use a Web browser to view the real-time monitoring data of the air conditioning system.

Reference Projects 2018 Russia World Cup StadiumsNizhny Novgorod Stadium

City: Nizhny NovgorodProduct: Water Cooled Screw Chiller; Fan Coil Units

Volgograd Arena

City: VolgogradProduct: Water Cooled Screw Chiller; Fan Coil Units

34Reference projects

Reference Projects

Cosmos Arena

City: SamaraProduct: Water Cooled Screw Chiller

The 27th Southeast Asian Games StadiumCountry: MyanmarCity: Nay Pyi TawOutdoor Units: Water Cooled Screw ChillerIndoor Units: MAHUTotal Capacity: 4,100RT

Hilton Hotel in Foshan(Five Star)Country: ChinaCity: FoshanOutdoor Units: Centrifugal Chiller & Water Cooled Screw ChillerIndoor Units: FCU & AHUTotal Capacity: 4,500RT

Butovo MallCountry: RussiaCity: MoscowOutdoor Units: Water Cooled Screw ChillerTotal Capacity: 5,000kWCompletion Year: 2015

35

Reference projects

36Reference projects

Major Platinum Cineplex LaosCountry: LaosCity: VientianeOutdoor Units: Centrifugal Chiller & Water Cooled Screw ChillerIndoor Units: FCU & AHUTotal Capacity: 2,000RT

The Prime Minister O�ce BuildingCountry: TajikistanCity: DushanbeOutdoor Units: Water Cooled Screw ChillerIndoor Units: FCU & AHUTotal Capacity: 2,880kW

The University of GeorgiaCountry: GeorgiaCity: TbilisiOutdoor Units: Water Cooled Screw ChillerIndoor Units: FCU Total Capacity: 1,200kW

Top Glove in MalaysiaCountry: MalaysiaCity: KlangOutdoor Units: Water Cooled Screw ChillerIndoor Units: FCU & AHUTotal Capacity: 3,400RT

37 38

Reference projects

Reference projects

Water Cooled Screw Chiller - Roskill Air Solutions LTD

Documents

Transcript of Water Cooled Screw Chiller - Roskill Air Solutions LTD