| Title |
Performance Test of a R134a Centrifugal Water Chiller |
| Authors |
이현구 ; 윤필현 ; 김춘동 ; 이용덕 ; 정진희 |
| Keywords |
R134a refrigerant ; R134a 냉매 ; Centrifugal water chiller ; 터보냉동기 ; Head coefficient ; 양정계수 ; Flow coefficient ; 유량계수 |
| Abstract |
A centrifugal water chiller using alternative refrigerant R134a have been developed. The prototype was designed to have refrigeration capacity of 300 RT. Its compressor employs a single high-speed impeller, airfoil diffuser and collector. Newly developed enhanced tubes were installed in the evaporator and the condenser to reduce the required head for the compressor. Off-design characteristics at various conditions, performance test of the compressor and analysis of the refrigeration cycle were performed. So the probability of use in part load condition was checked and the direction for revision was suggested. |