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

利用 Ca(OH)_2/CaO 反应开发原型高温化学热泵

• 批准号: 02555192
• 负责人: HASATANI Masanobu
• 金额: $ 9.47万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1990
• 资助国家: 日本
• 起止时间: 1990 至 1991
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-02555192/
• 关键词: heat storage; chemical heat pump; calcium oxide; hydration; numerical analysis; heat transfer augmentation; particle bed; カルシウム; 水和発熱反応; 粒子層伝熱促進

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

从利用Ca(OH)2/CaO反应实现化学热泵实用化的角度，开展了高温化学热泵样机的开发研究。1)考察了化学热泵机组实际使用的最佳运行条件(无换热)。利用热重分析仪考察了样品大小、成分、焙烧条件等因素对CaO重碳化反应活性的影响。结果发现，焙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。结果表明，实验结果与数学模型吻合较好。4)考察了冷凝性能对蓄热性能的影响。作为r…此外，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媒流动在内的换热器、传热传质促进剂、冷凝促进剂对原型热泵性能的影响。因此，缩合促进剂的影响是不够的。6)利用水供气热重分析仪，考察了样品大小、组成、焙烧条件等对水合/脱水反应活性的影响。结果发现，对于水合/脱水反应和再碳化反应，所考察的参数对热泵性能的影响是相似的。7)在样机上，考察了几种基本性能和实用性能。结果表明，该热泵的基本性能满足实际使用要求。然而，对于高温度使用，换热介质限制了性能。较少

项目成果

小倉 裕直、宮崎 光俊、松田 仁樹 架谷 昌信、梁取 美智雄、平松 正義: "Ca(OH)2/CaO反応系ケミカルヒ-トポンプにおける固体反応層の伝熱性能向上に関する実験的検討" 化学工学論文集. 17. 916-923 (1991)

Hironao Ogura、Mitsutoshi Miyazaki、Hitoshi Matsuda、Masanobu Kagaya、Michio Yanatori、Masayoshi Hiramatsu：“改善 Ca(OH)2/CaO 反应系统化学热泵中固体反应层传热性能的实验研究”化学杂志工程 17. 916-923 (1991)

小倉 裕直、宮崎 光俊、松田 仁樹 架谷 昌信、梁取 美智雄、平松 正義: "Ca(OH)2/CaO反応系ケミカルヒ-トポンプにおけるフィン挿入型固体反応層の伝熱解析" 化学工学論文集.

Hironao Ogura、Mitsutoshi Miyazaki、Hitoshi Matsuda、Masanobu Kagaya、Michio Yanatori、Masayoshi Hiramatsu：“Ca(OH)2/CaO反应系统化学热泵中翅片插入固体反应层的传热分析”化学工程杂志。