SOLAR-DRIVEN AIR-COOLED ADIABATIC JET ABSORPTION REFRIGERATION CYCLE

Hou Zhaoning; Wang Lin; Yan Xiaona; Tan Yingying; Li Xiuzhen

doi:10.19912/j.0254-0096.tynxb.2020-0520

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (3) : 268-273. DOI: 10.19912/j.0254-0096.tynxb.2020-0520

SOLAR-DRIVEN AIR-COOLED ADIABATIC JET ABSORPTION REFRIGERATION CYCLE

Hou Zhaoning¹, Wang Lin¹, Yan Xiaona², Tan Yingying¹, Li Xiuzhen¹

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Abstract

In order to improve the performance of solar absorption refrigeration cycle and solve the problems of solar powered air-cooled absorption chiller, solar-driven air-cooled adiabatic jet absorption refrigeration cycle （AAJA） is proposed in this paper. The jet-adiabatic absorber not only separates the processes of heat and mass transfer, but also recovers the lost work due to throttling process of high-pressure solution and excessive pressure of recirculation solution, which leads to the improvement of absorption efficiency. The mathematical model of thermodynamics of components is established, and the influences of ambient temperature, generating temperature, evaporating temperature and ejector pressure lift ratio on the three cycles are discussed and compared. The results show that, there is an optimal generating temperature for the proposed cycle to obtain the highest thermal coefficient of performance （$COP_T$）, and the jet-adiabatic absorber can significantly improve cycle performance under the extreme operating conditions. As compared with the conventional air-cooled adiabatic absorption refrigeration （AAAR） cycle, the $COP_T$ and electric coefficient of performance （$COP_E$） of the proposed cycle are increased by 7.69% and 43.59% respectively, whereas the $COP_T$ and $COP_E$ of the novel cycle are 2.44% and 273.86%, respectively higher than those of the water-cooled non-adiabatic absorption ejector refrigeration （WNAE） cycle.

Key words

solar energy / absorption refrigeration / adiabatic absorber / ejector / air-cooled / coefficient of performance

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Hou Zhaoning, Wang Lin, Yan Xiaona, Tan Yingying, Li Xiuzhen. SOLAR-DRIVEN AIR-COOLED ADIABATIC JET ABSORPTION REFRIGERATION CYCLE[J]. Acta Energiae Solaris Sinica. 2022, 43(3): 268-273 https://doi.org/10.19912/j.0254-0096.tynxb.2020-0520

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