Experimental study of heat and mass recovery on steam generation in an adsorption heat pump with composite zeolite-CaCl2
Experimental study of heat and mass recovery on steam generation in an adsorption heat pump with composite zeolite-CaCl2
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DOI：
10.1016/j.scs.2019.101808
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发表时间：
2020
影响因子：
11.7
通讯作者：
S. Ye;Bing Xue;Xiangrui Meng;Xinli Wei;K. Nakaso;J. Fukai
中科院分区：
文献类型：
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作者：
S. Ye;Bing Xue;Xiangrui Meng;Xinli Wei;K. Nakaso;J. Fukai
通过引入热回收和质量回收的方法，对复合沸石- cacl2吸附热泵的高温蒸汽生成进行了实验研究。采用直接接触式换热方法，提高了整体换热率。将沸石颗粒浸入质量浓度为40%的cacl2溶液中制备复合沸石（CZ）。循环试验包括两个过程：130 ℃干空气再生和80 ℃热水产汽。在生成过程之前加入90 ℃以下蒸汽的热量和质量回收。在200 °C以上产生的蒸汽质量增加了9.12%。产生蒸汽的有效时间大大延长了18.33%。通过热回收和质量回收，可以更快地实现填充床内的吸附和热平衡。一级吸附式热泵的总温升在100 ℃以上。采暖性能系数（COPh）和比热功率（SHP）分别提高9.55%和9.23%。产生的蒸汽质量的增加有助于改善COPh。同时，只需要很短的时间来回收热量和质量，就可以提高SHP。
High-temperature steam generation in adsorption heat pump with composite zeolite-CaCl2has been experimentally investigated by introducing heat and mass recovery. A direct contact heat exchange method is utilized to enhance the overall heat transfer rate. Composite zeolite (CZ) is prepared by immersing zeolite particle in CaCl2solution at mass concentration of 40%. Cyclic experiment consists of two processes: regeneration with 130 °C dry air and steam generation with 80 °C hot water. The heat and mass recovery with steam below 90 °C is added before generation process. Mass of generated steam above 200 °C is increased by 9.12%. The effective time for steam generation is dramatically extended by 18.33%. Adsorption and thermal equilibriums inside the packed bed are achieved more quickly with heat and mass recovery. Gross temperature lift for one-stage adsorption heat pump is above 100 °C. Coefficient of performance for heating (COPh) and specific heat power (SHP) are elevated by 9.55% and 9.23%, respectively. The increase in mass of generated steam contributes to the improvement of COPh. Meanwhile, only a short time used for heat and mass recovery enables the rise in SHP.