| 摘要: |
| 本文基于吸收式热泵内部实际发生的物理过程，建立了一个不同于目前通用的热泵-热机等效模型的吸收式热泵的理想模型。基于此理想模型，研究了吸收式热泵实现热量变换的基本性能。定义了热量的温度提升系数，即吸收-蒸发过程源侧热量的升温程度与发生-冷凝过程源侧热量的降温程度之比。提出用热量的品位提升系数和制冷COP（蒸发器制冷量与发生器输入热量之比）两个相对独立的参数来刻画吸收式热泵理想过程的基本性能。推导出了恒温热源下单效单级、多效、多级吸收式热泵的理想过程的温度提升系数、理想COP的表达式，可分别从热量的温度提升和输入输出热量比两个方面认识吸收式热泵实现热量变换的本质。 |
| 关键词: 吸收式热泵 热力学理想过程 热力学评价 |
| DOI： |
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| 基金项目: |
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| An Idea Model of Absorption Heat Pump with Idea Solution Circulation |
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Xie Xiaoyun, Jiang Yi
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| (Building Energy Research Center) |
| Abstract: |
| Based on the internal actual physical processes, a new ideal process of absorption heat pump with constant-temperature heat sources and constant-temperature heat reservoirs is built in this paper, which is different from ordinary equivalent ideal model of a heat pump combined a heat engine. The basic performance of heat transformation by absorption heat pump is studied by analysis of the ideal process. A coefficient describing grade lift of heat is defined as the ratio of the temperature difference between heat source and heat reservoir for evaporation and absorption process and the temperature difference between heat generation and condensation process. It is prompted that the basic performance of an absorption heat pump can be characterized by the coefficient of grade lift of heat and the COP. The coefficients of grade lift of heat and the ideal COP respectively for single effect and single stage absorption heat pump, multi-effect absorption heat pump and multi-stage absorption heat pump under constant-temperature heat reservoirs and heat sinks are derived. |
| Key words: absorption heat pump thermodynamic ideal processes thermodynamic evaluation |
