SBS5311 HVACR II http://ibse.hk/SBS5311/ Experiment 3: Refrigeration Cycle for Air-conditioning Plant Introduction Vapour compression refrigeration systems are the most commonly used among all refrigeration systems and is the most widely used method for air-conditioning of buildings. In a vapour compression refrigeration system, refrigeration is obtained as the refrigerant evaporates at low temperatures. The input to the system is in the form of mechanical energy required to run the compressor. The purpose of this experiment is to practically show how to construct a complete refrigeration cycle diagram for the air-conditioning plant and analyse its performance. Objectives • To study an ...
REFRIGERATION THERMODYNAMICS OF THE REFRIGERATION CYCLE BASIC KNOWLEDGE THERMODYNAMICS OF THE REFRIGERATION CYCLE Set-up and function of a compression The refrigeration cycle refrigeration system For operating media which can have different phases, The refrigerant in a compression refrigeration system Heat dissipation such as water or refrigerant, the T-ss diagram looks Liquid flows through a closed cycle with the following four during condensation different. supercooled stations: Highg pressure It has an area on the left (grey), in which the operating Evaporation A medium is liquid and supercooled. In the centre (blue) Condensation Compres- Compression B there is a mixture of steam ...
Refrigeration Cycle Heat flows in direction of decreasing temperature, i.e., from high-temperature to low temperature regions. The transfer of heat from a low-temperature to high-temperature requires a refrigerator and/or heat pump. Refrigerators and heat pumps are essentially the same device; they only differ in their objectives. The performance of refrigerators and heat pumps is expressed in terms of coefficient of performance (COP): COP QL R W net,in COP QH HP W net,in The Reversed Carnot Cycle Reversing the Carnot cycle does reverse the directions of heat and work interactions. A refrigerator or heat pump that operates on ...
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