Perhitungan Excel Praktikum 2
16
Data 1.0 kW Bukaan Damper A (Intake) B (After Mixing) Tdb Twb Tdb Twb Fully Open 20 14 19.9 14.3 Half Open 21.3 14.3 21.1 14.7 Fully Closed 21.1 14.5 23.9 14.7 Bukaan Damper Compartement V I Pre-heater I Re-heater I Compressor Fully Open 204 4.4 4.4 5.4 Half Open 206 4.4 4.4 5.4 Fully Closed 209 4.4 4.4 5.5 Data 0.5 kW Bukaan Damper A (Intake) B (After Mixing) Tdb Twb Tdb Twb Fully Open 17.9 12.1 18.2 12.5 Half Open 20 13.7 18.5 12.8 Fully Closed 19 11.2 15.4 9.8 Bukaan Damper Compartement V I Pre-heater I Re-heater I Compressor Fully Open 220 2 2 5 Half Open 220 2 2 5 Fully Closed 220 2 2 4.9 Perhitungan Q preheater Bukaan Damper Va=Vb Z Y mdot A Fully Open 1.0 kW 0.842 5.2 2.4 0.188122831 Fully Open 0.5 kW 0.834 5.2 2.4 0.1890229453 Perhitungan Q Evaporator UDARA Bukaan Damper V CD z mdot A hC Fully Open 1.0 kW 0.846 5.2 0.1876775692 46.88 Fully Open 0.5 kW 0.83 5.2 0.1894778749 38.5 Perhitungan Q Evaporator REFRIGERANT Bukaan Damper h11 h12 h13 Fully Open 1.0 kW 95.85 95.85 251.8 0.0138888889 Fully Open 0.5 kW 91.49 91.49 252.52475 0.0138888889 Overall COP mdot refrigerant (kg/s)
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Transcript of Perhitungan Excel Praktikum 2
Data 1.0 kW
Bukaan DamperA (Intake) B (After Mixing)
Tdb Twb Tdb TwbFully Open 20 14 19.9 14.3Half Open 21.3 14.3 21.1 14.7
Fully Closed 21.1 14.5 23.9 14.7
Bukaan DamperCompartement
V I Pre-heater I Re-heater I CompressorFully Open 204 4.4 4.4 5.4Half Open 206 4.4 4.4 5.4
Fully Closed 209 4.4 4.4 5.5
Data 0.5 kW
Bukaan DamperA (Intake) B (After Mixing)
Tdb Twb Tdb TwbFully Open 17.9 12.1 18.2 12.5Half Open 20 13.7 18.5 12.8
Fully Closed 19 11.2 15.4 9.8
Bukaan DamperCompartement
V I Pre-heater I Re-heater I CompressorFully Open 220 2 2 5Half Open 220 2 2 5
Fully Closed 220 2 2 4.9
Perhitungan Q preheater
Bukaan Damper Va=Vb Z Y mdot A
Fully Open 1.0 kW 0.842 5.2 2.4 0.188122831Fully Open 0.5 kW 0.834 5.2 2.4 0.1890229453
Perhitungan Q Evaporator UDARA
Bukaan Damper V CD z mdot A hCFully Open 1.0 kW 0.846 5.2 0.1876775692 46.88Fully Open 0.5 kW 0.83 5.2 0.1894778749 38.5
Perhitungan Q Evaporator REFRIGERANT
Bukaan Damper h11 h12 h13
Fully Open 1.0 kW 95.85 95.85 251.8 0.0138888889Fully Open 0.5 kW 91.49 91.49 252.52475 0.0138888889
Overall COP
mdot refrigerant (kg/s)
Bukaan Damper Qevaporator P COPFully Open 1.0 kW 2.1659722 0.99144 2.1846730233Fully Open 0.5 kW 2.2365938 0.99 2.2591856061
Re-heating & Fan Power Input
Bukaan Damper VA mdot A z QreheaterFully Open 1.0 kW 0.842 0.188122831 5.2 0.8976Fully Open 0.5 kW 0.814 0.1894778749 5.2 0.44
Perhitungan Q preheater
Bukaan Damper Vb z mdot B hC
Half Open 1.0kW 0.844 5.2 1.878998044 46.88Half Open 0.5 kW 0.835 5.2 1.8890972403 39.621
Perhitungan Q Evaporator UDARA
Bukaan Damper V CD z mdot A hCHalf Open 1.0kW 0.848 5.2 0.1874561207 46.88Half Open 0.5 kW 0.83 5.2 0.1894778749 38.541
Perhitungan Q Evaporator REFRIGERANT
Bukaan Damper h11 h12 h13
Half Open 1.0kW 95.85 95.85 251.9 0.0138888889Half Open 0.5 kW 92.15 92.15 251.573 0.0138888889
Overall COP
Bukaan Damper Qevaporator P COPHalf Open 1.0kW 2.1673611 1.00116 2.1648498852Half Open 0.5 kW 2.2142083 0.99 2.2365740741
Re-heating & Fan Power Input
Bukaan Damper VA mdot A z QreheaterHalf Open 1.0kW 0.844 0.1874561207 5.2 0.9064Half Open 0.5 kW 0.84 0.1894778749 5.2 0.44
Perhitungan Q preheater
Bukaan Damper Vb z mdot B hC
Fully Closed 1.0kW 0.85 5.2 1.8723545416 47.386Fully Closed 0.5 kW 0.824 5.2 1.9016647025 29.12
Perhitungan Q Evaporator UDARA
mdot refrigerant (kg/s)
Bukaan Damper V CD z mdot A hCFully Closed 1.0kW 0.85 5.2 0.1872354542 47.386Fully Closed 0.5 kW 0.816 5.2 0.1910963852 38.012
Perhitungan Q Evaporator REFRIGERANT
Bukaan Damper h11 h12 h13
Fully Closed 1.0kW 95.85 95.85 244.31 0.0138888889Fully Closed 0.5 kW 89.33 89.33 240.15 0.0138888889
Overall COP
Bukaan Damper Qevaporator P COPFully Closed 1.0kW 2.0619444 1.00116 2.0595553602Fully Closed 0.5 kW 2.0947222 0.99 2.1158810325
Re-heating & Fan Power Input
Bukaan Damper VA mdot A z QreheaterFully Closed 1.0kW 0.843 0.1880112185 5.2 0.44Fully Closed 0.5 kW 0.834 0.1890229453 5.2 0.44
TOTAL PERHITUNGAN
ΔQ evap udara Q evap Refrigerant Overall COP
0.5
Fully Open 1.714 2.237 2.259
Half Open 2.198 2.214 2.237
2.289 2.095 2.116
1
Fully Open 3.367 2.166 2.185
Half Open 3.333 2.167 2.165
3.151 2.062 2.060
mdot refrigerant (kg/s)
Fully Closed
Fully Closed
Fully Open Half Open Fully Closed1.950
2.000
2.050
2.100
2.150
2.200
2.250
2.300
2.0952.062
Q Refrigerant Evaporator
kW
Fully Open Half Open Fully Closed1.950
2.000
2.050
2.100
2.150
2.200
2.250
2.300
2.0952.062
Q Refrigerant Evaporator
kW
C (After Pre-heating) D (After Cooling) E (After Re-heating)
Tdb Twb Tdb Twb Tdb29 16.8 14.8 10 23.2
30.7 16.8 15.3 10 23.832.2 17 16.3 10.6 24.8
CompartementBukaan Damper
CondensateI Fan Temperature Rate (ml)0.85 Fully Open 26 1900.8 Half Open 27 900.7 Fully Closed 26 60
C (After Pre-heating) D (After Cooling) E (After Re-heating)Tdb Twb Tdb Twb Tdb22.6 14.2 11.5 9 16.122.6 13.8 11.4 9 16.522.7 13.6 11 8.6 16
CompartementBukaan Damper
CondensateI Fan Temperature Rate (ml)0.8 Fully Open 26 2000.7 Half Open 26 1300.7 Fully Closed 26 90
mdot B hC hB
0.188122831 46.88 39.962 0.44 1.30143374450.1890229453 39.621 35.259 0.44 0.8245180875
hD wC wD mdotw hw29.193 0.0078 0.0055 0.0004316584 109.0729.5 0.0064 0.006 7.57911499427E-005 109.07
Perhitunan Power Input Compressor (Electrical)
Qevaporator Bukaan Damper E Ic
2.1659722222 Fully Open 1.0 kW 204 5.42.23659375 Fully Open 0.5 kW 220 5
Qdot Preheater (electical)
Qdot Preheater (mechanical)
Pfan Qre-Pfan hE hD delta Qre-fan0.1734 1.071 39.879 29.193 2.01028057150.176 0.616 32.035 29.5 0.4803264128
hB Qdot Preheater (mechanical) Delta Q
41.035 0.9064 10.9827435671 10.076343567136.006 0.9064 6.8290865236 5.9226865236
hD wC wD mdotw hw29.185 0.00628 0.00549 0.0001480903 109.0726.95 0.00625 0.00617 1.51582299885E-005 109.07
Perhitunan Power Input Compressor (Electrical)
Qevaporator Bukaan Damper E Ic
2.1673611111 Half Open 1.0kW 206 5.42.2142083333 Half Open 0.5 kW 220 5
Pfan Qre-Pfan hE hD delta Qre-fan0.1648 1.0712 39.864 29.193 2.00034426350.154 0.594 31.783 26.95 0.9157465692
hB Qdot Preheater (mechanical) Delta Q
40.962 0.44 12.0280055752 11.588005575228.717 0.44 0.7663708751 0.3263708751
Qdot Preheater (electical)
Qdot Preheater (electical)
hD wC wD mdotw hw30.583 0.0059 0.00564 4.86812180813E-005 109.0726.05 0.00613 0.00598 2.86644577780E-005 109.07
Perhitunan Power Input Compressor (Electrical)
Qevaporator Bukaan Damper E Ic
2.0619444444 Half Open 1.0kW 206 5.42.0947222222 Half Open 0.5 kW 220 5
Pfan Qre-Pfan hE hD delta Qre-fan0.1463 0.5863 40.938 30.583 1.94685616720.154 0.594 26.879 26.05 0.1567000217
TOTAL PERHITUNGAN
0.136
0.322
0.437
0.939
0.929
1.361
ΔQ Re & Fan Power Input
Fully Open Half Open Fully Closed0.000
0.500
1.000
1.500
2.000
2.500
3.000
3.500
4.000
2.289
3.151
ΔQ udara evaporator
kW
Fully Open Half Open Fully Closed1.950
2.000
2.050
2.100
2.150
2.200
2.250
2.300
2.0952.062
Q Refrigerant Evaporator
kW
Fully Open Half Open Fully Closed1.950
2.000
2.050
2.100
2.150
2.200
2.250
2.300
2.116
2.060
Overall COP
Fully Open Half Open Fully Closed1.950
2.000
2.050
2.100
2.150
2.200
2.250
2.300
2.0952.062
Q Refrigerant Evaporator
kW
Fully Open Half Open Fully Closed1.950
2.000
2.050
2.100
2.150
2.200
2.250
2.300
2.116
2.060
Overall COP
E (After Re-heating)Temperature after exp. Valve Temperature Leaving evaporator
Twb14.3 32.6 -6.3 7.814.3 32.6 -6.5 8.114.7 33.6 -5 8.5
E (After Re-heating)Temperature after exp. Valve Temperature Leaving evaporator
Twb11.2 29.8 -10.4 9.311.1 30.5 -10.7 7.6
9 28.5 -12 3.2
-8 242.54-5 x-4 244.9
Delta Q
0.86143374450.3845180875
hf DeltaH (kW)109.07 3.3665341489109.07 1.7135674144
Cos phi P
0.9 0.991440.9 0.99
Temperature before exp. Valve
Temperature before exp. Valve
delta Q0.9392805715
0.1356735872
hf DeltaH (kW)109.07 3.3331882678109.07 2.1978913556
Cos phi P
0.9 1.001160.9 0.99
delta Q0.9291442635
0.3217465692
hf DeltaH (kW)109.07 3.1514269967109.07 2.289021392
Cos phi P
0.9 1.001160.9 0.99
delta Q1.3605561672
0.4372999783
Fully Open Half Open Fully Closed0.000
0.500
1.000
1.500
2.000
2.500
3.000
3.500
4.000
2.289
3.151
ΔQ udara evaporator
kW
Fully Open Half Open Fully Closed1.950
2.000
2.050
2.100
2.150
2.200
2.250
2.300
2.116
2.060
Overall COP
Fully Open Half Open Fully Closed0.000
0.200
0.400
0.600
0.800
1.000
1.200
1.400
1.600
0.437
1.361
ΔQ Re-heater & Fan Power Input
kW
Fully Open Half Open Fully Closed1.950
2.000
2.050
2.100
2.150
2.200
2.250
2.300
2.116
2.060
Overall COP
Pressure Condenser Pressure Evaporator Orifice Differential (intake) Orifice Differential (in duct)
240 1100 5.2 2.4250 1125 5.2 2.4259 1150 5.2 2.4
Pressure Condenser Pressure Evaporator Orifice Differential (intake) Orifice Differential (in duct)
180 1025 5.2 2.3190 1050 5.2 2.3150 1000 5.2 2.3
244.31
Fully Open Half Open Fully Closed0.000
0.200
0.400
0.600
0.800
1.000
1.200
1.400
1.600
0.437
1.361
ΔQ Re-heater & Fan Power Input
kW
