THERMODYNAMIC ANALYSIS AND COMPARISON OF TWO-STAGE CHLORIDE HEAT TRANSFORMERS
A two-stage heat transformer is superior to a single-stage one because it has higher efficiency or temperature lift. This paper carries out a systematic study on two-stage chloride heat transformers. On the basis of chlorides selection, four kinds of commonly used cycles, the resorption cycle (3S/G), double-effect resorption cycle (3S/G), two internal heat recovery resorption cycles (3S/G and 4S/G) are analyzed and compared according to coefficient of performance, exergy efficiency, temperature lift and some operational parameters.Among these four cycles, the resorption one (3S/G) is proved to be the best for driven heat temperature no more than 100 ℃. The double-effect resorption cycle (3S/G) has the highest COP, but lowest temperature lift. The two internal heat recovery resorption cycles (3S/G and 4S/G) have similar operation principle, but the 3S/G one is found to be the best at the driven heat temperature of 120 ℃ for its system pressure is smaller.
YinQing YU P.ZHANG Ch.WANG J.Y.WU
Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University Shanghai, 200240, PR China
国际会议
The 22nd International Congress of Refrigeration(第22届国际制冷大会)
北京
英文
2007-08-21（万方平台首次上网日期，不代表论文的发表时间）