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A Generalized Component Design Model by Combined Heat and Mass Transfer Analysis in NH3-H2O Absorption Heat Pump Systems NH3-H2O吸收式热泵系统传热传质综合分析广义组分设计模型
针对吸收式热泵系统中使用的部件,开发了一个综合传热传质分析的通用模型。该模型可用于NH3-H2O吸收式热泵系统中吸收器、解吸器、整流器、冷凝器或蒸发器的设计。研究了吸收/解吸蒸汽z中氨成分的物理意义。通过同时求解每个组分的扩散方程和质量平衡方程,生成了成分图。各换热器尺寸对传热系数的影响。该通用设计模型可用于研究可变参数(如每个区域的传热系数、蒸汽速度和温度偏离平衡)对每个部件性能的影响。关键词:1997年,计算,热流,流体流动,部件,吸收式热泵,氨,水,传热系数,热交换器,设计,尺寸,温度,冷凝器,整流器科学: 研讨会,ASHRAE Trans。1997年,第103卷,第一部分
Develops a generalised model using combined heat and mass transfer analysis for components used in absorption heat pump systems. The model can be applied to the design of an absorber, desorber, rectifier, condenser, or evaporator in NH3-H2O absorption heat pump systems. The physical significance of the ammonia composition in the absorbing/desorbing vapour, z, was studied. A composition map was generated by solving the diffusion and mass balance equations simultaneously for each component. Illustrates the effects of each heat transfer coefficient on heat exchanger size. This generalised design model can be used to investigate the effects of variable parameters, such as the heat transfer coefficient in each region, the vapour velocity, and the temperature deviation from the equilibrium, on the performance of each component.KEYWORDS: year 1997, Calculating, heat flow, fluid flow, components, absorption heat pumps, ammonia, water, heat transfer coefficient, heat exchangers, designing, sizing, temperature, condensers, rectifiers
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