| Title |
Simulation of Compression/Absorption Hybrid Heat Pump System using Industrial Wastewater Heat Source |
| Keywords |
Hybrid heat pump ; 하이브리드 히트펌프 ; Waste heat recovery ; 폐열회수 ; Ammonia ; 암모니아 ; Water ; 물 ; Temperature gradient ; 온도구배 |
| Abstract |
In this study, in order to utilize the waste heat of industrial wastewater in the range of the relatively low temperature of 40～50℃ as a heat source, a hybrid heat pump system was considered by computer simulation method. In the simulation, an absorber, desorber and solution heat exchanger were modelled by UA values while a compressor and pump performance were specified by an isentropic efficiency. Simulation results show that the performance of hybrid heat pump can be up to 80% higher than that of conventional R134a heat pump when it makes a process hot water of 90℃ while the wastewater is cooled down to 20℃. As the absorber pressure increases, the system performance and desorber pressure increase with a favorable effect of a compressor discharge gas temperature drop. |