NH3/IMPEX余热制冷系统特性与优化

A newly developed material IMPEX, by means of heat pump to capture low temperature medium, is applied for the residual heat recovery. For a reversible solid-gas reaction in the chemical heat pump, the influence of various operation conditions on the adsorption/desorption performance are studied by unsteady state experiments. A SrCl2 adsorption/desorption kinetic model is used to identify the kinetic coefficients with the optimization toolbox. Based on the one-dimensional dynamic heat balance equation, the effective thermal conductivity and the contact heat transfer coefficient are determined. We further construct a new reactor, coupled with a jacket and superconductive heat tubes and set up a two-dimensional dynamic model. The simulation and experimental data show that the heat tubes apparently affect the heat transfer. The adsorption rate increases about 30%, which results in the improvement of the heat recovery efficiency. Moreover, we proposed a diagram of a quasi-continuous heat recovery system containing a solid-gas heat pump, and a global mathematical model of the system. This model can be used for determination of the operation conditions. Under the optimized cycle, the recovery efficiency can reach 121W/kg. These results can be used for the optimal design of the chemical heat pump system.

以性能优良的IMPEX材料为基础，构成一种相对清洁、无腐蚀、无噪音、低成本以利用低温嗳仁迪种评涞男录际酢Ｑ芯拷鹗粞?氨系统热力学、可逆络合动力学行为以及特殊反应器的传热性能，确定适宜的反应器构性，建立反应器的非定态模型，进行络合、解络过程仿真、优化以及制冷全系统优化和控制的探索。将为该系统余热制冷的成套技术提供科学依据。