关键词: 地热能源； 双级溴化锂吸收式制冷循环； 火用经济分析； 火用； 热力学

Abstract: With a concern of the vast geothermal waste water during the operation of flash geothermal power plant in Fengshun and the residents′ need for cooling load, this paper proposes an integrated system which synthesizes a TSARS to the original flash power generation cycle, improving the utilization efficiency of the geothermal water by taking the advantage of two-stage LiBr-H₂O absorption refrigeration system(TSARS) in the utilization of low grade heat. First, with the field research made to establish the exergoeconomic model, analysis of this geothermal water integrated system was addressed. Then, Comparing the ways of the geothermal water entering the TSARS, it was found that the parallel way is better than the cascade on the exergoeconomic performance. In addition, exergoeconomic analysis of each equipment of the paralleled TSARS was made. All above provide a certain reference to the further actual engineering application.

Key words: geothermal resources; twostage LiBr-H₂O absorption refrigeration system; exergoeconomic analysis; exergy; thermodynamics