The application of entransy theory in optimization design of Isopropanol–Acetone–Hydrogen chemical heat pump
The application of entransy theory in optimization design of Isopropanol–Acetone–Hydrogen chemical heat pump
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DOI：
10.1016/j.energy.2012.04.018
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发表时间：
2012-07
期刊：
影响因子：
9
通讯作者：
Jiangfeng Guo;Xiulan Huai
中科院分区：
文献类型：
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作者：
Jiangfeng Guo;Xiulan Huai
本文基于能积理论，建立了异丙醇-丙酮-氢气（IAH）化学热泵的多参数优化方法。在优化过程中，热泵系统消耗的总低温热量总体上减少，而热泵回收的高温热量显著增加。当再沸器温度和吸热反应温度一定时，优化设计方案的放热反应温度高于初始设计方案，放热反应器释放的高温热量显著增加。在优化过程中，热效率和火用效率随着积效率的增加而单调增加。与焓效率相比，熵效率具有明确的物理意义，更关注热泵回收的高温热量的质量，不引入附加参数，比火用效率表达更简洁。在IAH化学热泵的优化设计中，以积效为目标函数的多参数优化方法是非常有效的。
In the present work, a multi-parameter optimization approach of Isopropanol–Acetone–Hydrogen (IAH) chemical heat pump is developed based on the entransy theory. In the optimization process, the total low-temperature heat consumed by the heat pump system generally decreases while the high-temperature heat recovered by the heat pump increases remarkably. When the temperatures of the reboiler and endothermic reaction are fixed, the temperature of exothermic reaction in the optimal design scheme is larger than that in the initial design scheme, and the high-temperature heat released from the exothermic reactor increases significantly in the optimal design scheme. The enthalpy efficiency (COP) and exergy efficiency monotonously increase as the entransy efficiency increases in the optimization process. The entransy efficiency has a definite physical meaning and pays more attention to the quality of the high-temperature heat recovered by the heat pump than enthalpy efficiency; it does not introduce an additional parameter and has more succinct expression than exergy efficiency. The multi-parameter optimization approach taking entransy efficiency as the objective function is very effective in the optimization design of IAH chemical heat pump.