AC System COP Optimization Through Major or Minor Adjustment of Component Design

In the process of designing of complete cycle of vapour compression refrigerant system, most important part is optimization of performance of all components including compressor, condenser, expansion valve, evaporator and piping and COP of the system . For balancing and COP optimization of air conditioning cycle, it is extremely important that all component selected must be balanced and synchronized with other components relatively. Many researches have been done related to system COP and performance optimization through various method as well as component performance optimization. While optimizing the cycle, changing one component parameter effects the other components behavior and becomes challenge to control all other characteristic. Sometimes even a minor adjustment in the cycle leads change in output result of components which are not preferable. The present paper is about optimization of system COP of refrigerant cycle through various combination of iteration that includes different rotor diameter of compressor, different expansion valve capacity with different super-heat set point, different pipe diameter along with application of IHX. This study is done using 1-D simulation. Comparison of simulated result of each stage is presented. Selected refined model is tested in lab and compared with the base model. With the proper selection of suitable component as well as adjustment of each component performance, COP of system achieved is better than initial selected system. This case study will help in better understanding of component behavior with major or minor adjustment in the cycle design at the system level.