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暖通空调杂志社>期刊目次>2017年>第12期

单效两级蒸发两级吸收冷凝式热泵变工况性能研究

Variable working condition performance study on a single-effect condensing heat pump with two-stage evaporation and two-stage absorption

孙 健 戈志华 董小波 谈 政
华北电力大学

摘要:

为了提升吸收式热泵COP,研究了一种两级蒸发两级吸收溴化锂吸收式热泵。对比了不同级数时的热泵性能,确定热泵流程后,针对末端为散热器和辐射地板进行了变工况模拟,对该热泵各换热部件进行了热力学分析,设计工况下发生器损失占总损失的36.8%。

关键词:吸收式热泵,两级蒸发,两级吸收,分析,余热利用,性能系数(COP)

Abstract:

In order to increase the COPs of absorption heat pumps, studies a single-effect LiBr absorption heat pump with two-stage evaporation and two-stage absorption. Compares the performances of heat pumps in different grades. After determining the heat pump process, simulates the variable working condition of radiator and radiant floor. Carries out the thermodynamic analysis on each heat exchange part of the heat pump. Exergy loss accounts for 36.8% of total loss under the design condition.

Keywords:absorptionheatpump,two-stageevaporation,two-stageabsorption,exergyanalysis,wasteheatutilization,coefficientofperformance(COP)

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