Development of Prototype High-Temperature Chemical Heat Pump Using Ca(OH)_2/CaO Reaction

从Ca（OH）2/CaO反应化学热泵实用化的角度出发，开展了高温化学热泵样机的研制工作。根据以下研究结果，获得了以下结果：1）考察了化学热泵机组实际使用的最佳运行条件（无热交换）。2）利用热重分析仪研究了样品粒度、组分、煅烧条件等因素的影响，对CaO再碳酸化反应活性的影响。结果表明，煅烧温度对反应活性有影响。3）对该化学热泵系统进行了理论分析。实验结果与数学模型吻合较好。4）考察了冷凝性能对蓄热特性的影响。是一家创新驱动型的 ...更多信息 通过提高冷凝器的效率，缩短了反应完成时间。5）考察了包括加热器和热介质流的换热器、传热传质促进剂、冷凝促进剂对原型热泵性能的影响。结果，缩合促进剂的影响不充分。6）利用H_2O气体供给式热重分析仪，研究了样品粒度、组分、煅烧条件等因素对样品性能的影响。对水合/脱水反应活性的影响。结果表明，所考察的参数对水化/脱水反应活性和再碳酸化反应活性的影响是相似的。7）在原型热泵上，考察了几种基本性能和实用性能。结果表明，热泵的基本性能满足实际应用的要求。然而，对于高温使用，热交换介质限制了性能。少

From the viewpoint of operating the proposed chemical heat pump using Ca(OH)_2/CaO reaction for practical use, the developmental research of prototype high-temperature chemical heat pump was performed. Based on the investigations described below, the following results were obtained.1) The best operating condition for practical use of the chemical heat pump unit (no heatexchange) was examined. As a result, the operating characteristics in several modes were shown.2) By the use of a thermogravimetric analyzer, the effects of sample size, component, calcination conditions etc., on the recarbonation reaction activity of CaO were examined. As a result, it was found that the calcination temperature influenced the reaction activity.3) The theoretical analysis of this chemical heat pump system was performed. As a result, there was a good agreement between experimental results and mathematical model.4) The effects of condensation performance on heat-storage characteristics were examined. As a r … More esult, by improving the efficiency of the condenser, the reaction completion time was shortened.5) The effects of the heat exchanger including a heater and a heat medium flow, the heat and mass transfer promoter, the condensation promoter on prototype heat pump performance were examined. As a result, the influence of the condensation promoter was not sufficient. However, the other parameters effecting the performance were enough.6) By using of the thermogravimetric analyzer With H_2O gas supplier, the effects of sample size, component, calcination conditions etc., on the hydration/dehydration reaction activity were examined. As a result, it was found that the the effects of the examined parameters were similar for both hydration/dehydration and recarbonation reaction activities.7) On the prototype heat pump, some kinds of both basic and utility performances were examined. It was found that the basic performance of the heat pump was enough for practical use. However, for high level temperature use, the heat exchange medium limits the performance. Less