Analysis on innovative resorption cycle for power and refrigeration cogeneration
Analysis on innovative resorption cycle for power and refrigeration cogeneration
复制标题
DOI：
10.1016/j.apenergy.2018.02.174
复制
发表时间：
2018-05
期刊：
影响因子：
11.2
通讯作者：
Long Jiang;A. Roskilly;R. Wang;L. W. Wang
中科院分区：
文献类型：
--
作者：
Long Jiang;A. Roskilly;R. Wang;L. W. Wang
提出了一种新型的回热循环，以期进一步挖掘热电冷联产的潜力。采用两套基本吸收式制冷循环，与涡轮机/膨胀机集成，实现两个半循环的准连续输出。提高了热电联产的效率，并具有安全性。选取传热传质性能较好的不同氨复合吸收剂，考察了热源温度在200 °C ~ 360 °C范围内的综合性能。结果表明，在热源温度为360 °C时，其发电能效可达0.263;在热源温度为200 °C时，其制冷性能系数可达1.31。采用FeCl 2-CaCl 2-BaCl 2工质对，在热源温度为240 °C时，新型吸收式热电联产循环的最佳总（火用）效率高达0.74。与其它热源温度相近的热电冷联供吸附循环相比，吸收式循环的（火用）效率最高，比水-氨吸附式循环高出约30%，比基本吸收式循环高出2倍。
A novel resorption cycle with internal heat recovery process is proposed, which is expected to further explore potentials of power and refrigeration cogeneration. Two sets of basic resorption refrigeration cycles are adopted, which are integrated with turbine/expander to realize quasi-continuous output in both half cycles. An improved cogeneration efficiency could be obtained with safety feature. Different ammonia composite sorbents with better heat and mass transfer performance are selected to investigate the overall performance when heat source temperature is in the range from 200 °C to 360 °C. It is indicated that energy efficiency for power generation is able to reach up to 0.263 at 360 °C heat source temperature while refrigeration coefficient of performance could achieve up to 1.31 at 200 °C heat source temperature. The optimal total exergy efficiency of novel resorption cogeneration cycle is as high as 0.74 by using working pair of FeCl2-CaCl2-BaCl2at 240 °C heat source temperature. Compared with other sorption cycles for power and refrigeration cogeneration at similar heat source temperatures, the proposed resorption cycle exhibits the highest exergy efficiency, which is about 30% higher than that of water-ammonia sorption cogeneration cycle, and twice higher than that of basic resorption cogeneration cycle.