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CHILLERAplikasi dan Studi Kasus

OutlineFungsiJenis jenis berdasarkan sistem kompresiPerhitungan Studi kasusFiturMendinginkan air untuk didistribusikan kepada heat exchanger atau air handling unit atau peralatan yang berfungsi mendinginkan udara dan kemudian air dikembalikan ke chiller untuk didinginkan kembali.Chiller untuk aplikasi pendinginan udara biasanya memiliki kapasitas pendinginan sebesar antara 15 hingga 1500 ton (180,000 - 18,000,000 BTU/h atau 53 - 5,300 kW) dan temperatur air yang didinginkan berkisar antara 35 hingga 45 derajat Fahrenheit (1.5 hingga 7 derajat Celsius).

Jenis Jenis Berdasarkan Sistem KompresiReciprocatingScrollScrew DrivenRadialReciprocating

A reciprocating compressor or piston compressor is a positive-displacement compressor that uses pistons driven by a crankshaft to deliver gases at high pressure. The intake gas enters the suction manifold, then flows into the compression cylinder where it gets compressed by a piston driven in a reciprocating motion via a crankshaft, and is then discharged

5Scroll

A scroll compressor uses two interleaving scrolls to pump, compress or pressurize fluids such as liquids and gases. The vane geometry may be involute, Archimedean spiral, or hybrid curves. Often, one of the scrolls is fixed, while the other orbits eccentrically without rotating, thereby trapping and pumping or compressing pockets of fluid between the scrolls. Another method for producing the compression motion is co-rotating the scrolls, in synchronous motion, but with offset centers of rotation. The relative motion is the same as if one were orbiting. Another variation is with flexible (layflat) tubing where the archimedean spiral acts as a peristaltic pump, which operates on much the same principle as a toothpaste tube. They have casings filled with lubricant to prevent abrasion of the exterior of the pump tube and to aid in the dissipation of heat, and use reinforced tubes, often called 'hoses'. This class of pump is often called a 'hose pumper'. Furthermore, since there are no moving parts in contact with the fluid, peristaltic pumps are inexpensive to manufacture. Their lack of valves, seals and glands makes them comparatively inexpensive to maintain, and the use of a hose or tube makes for a low-cost maintenance item compared to other pump types.

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