第2種吸収式ヒートポンプの特性シミュレーション

概要

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A computer simulation taking into full consideration the effect of heat and mass transfer characteristics in heat exchangers has been developed in order to predict the performance of the absorption-type heat pump for temperature boosting of waste heat. The simulation model adopted here is single-stage with a lithium bromide-water system, being common for practical use. The calculations were carried out until the sufficient degree of convergence was obtained for the thermodynamic equilibrium at all the heat exchangers forming the absorption-type heat pump system. The results show that the temperature boost increases sharply with an increase of the waste heat temperature. The same tendency can be seen when the temperature of the cooling water flowing into the condenser becomes lower. It should be noted from these results that the temperature boost can be related only to the mean concentration of the absorbent solution between the inlet and outlet of the absorber. Furthermore, efforts were made to obtain information about the most essential heat exchanger which predominates the absorption cycle from the point of temperature boost. It is shown that the heat and mass transfer characteristics in the absorber are most sensitive for the temperature boost of all the heat exchange and the development of a more efficient absorber should be highly important.
一般社団法人日本機械学会の論文
1986-02-25