Magnesium oxide/water chemical heat pump to enhance energy utilization of a cogeneration system
Magnesium oxide/water chemical heat pump to enhance energy utilization of a cogeneration system
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DOI：
10.1016/j.energy.2004.08.019
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发表时间：
2005-08-01
期刊：
影响因子：
9
通讯作者：
Yoshizawa, Y
中科院分区：
文献类型：
--
作者：
Kato, Y;Sasaki, Y;Yoshizawa, Y
使用氧化镁/水反应系统的化学热泵有望适用于使用燃气发动机、柴油发动机和燃料电池的热电联产系统。在30和203 kPa之间的水合操作压力下的热泵的可操作性进行了实验研究。在实验中，将具有高重复操作耐久性的反应物填充在圆柱形反应器中。在各种热驱动操作条件下重复操作循环。通过测量反应器床层温度分布和反应分数的变化，研究了正、逆反应。在放热模式操作下，反应器床通过脱水反应在约300-400摄氏度下储存热量，并通过水合反应在约100-200摄氏度下释放热量。根据实验结果讨论了反应器床层的实用可行性。该热泵通过在低热量需求期间化学地储存剩余热量并在高峰需求期间供应热量，预计可适用于热电联产系统中的负荷均衡。研究表明，化学热泵能够提高热电联产系统的能源利用效率，同时还有助于减少能源消耗和全球二氧化碳排放。(c)2004爱思唯尔有限公司保留所有权利。
A chemical heat pump using a magnesium oxide/water reaction system is expected to be applicable to cogeneration systems using gas engine, diesel engine, and fuel cells. The operability of the heat pump was examined experimentally under hydration operation pressures between 30 and 203 kPa. In the experiment, a reactant having high durability for repetitive operation was packed in a cylindrical reactor. The cycle of operation was repeated under various thermally driven operation conditions. The forward and reverse reactions were studied by measuring the reactor bed temperature distribution and the reacted fraction changes. The reactor bed stored heat at around 300-400 degrees C by the dehydration reaction and released heat at around 100-200 degrees C by the hydration reaction under the heat amplification mode operation. The practical possibility of the reactor bed was discussed based on the experimental results. The heat pump is expected to be applicable for load leveling in a cogeneration system by chemically storing surplus heat during low heat demand and supplying heat during peak demand. It was shown that the chemical heat pump would be able to improve the efficiency of energy utilization in cogeneration systems while also helping to reduce energy consumption and global carbon dioxide emissions. (c) 2004 Elsevier Ltd. All rights reserved.