以硫化石墨为吸附剂基质的再吸附制冷性能分析  

Performance Analysis on the Resorption Refrigeration based on the Adsorbent with the Matrix of Expanded Natural Graphite Treated with Sulfuric Acid

作　　者：张雪峰[1] 刘长智[1] 江龙[1] 王丽伟[1] 王如竹[1] 

机构地区：[1]上海交通大学制冷与低温工程研究所,上海200240

出　　处：《制冷学报》2015年第3期41-47,共7页Journal of Refrigeration

基　　金：国家自然科学基金优秀青年基金(51222601)--吸附式制冷与热功转换技术资助项目~~

摘　　要：相比于传统的吸附式制冷,再吸附制冷作为一种新型的制冷方式,其结构更加简单,并且其制冷性能系数也比相同条件下的吸附式制冷系统要高,故有较好的应用前景。但受到吸附剂的传热传质性能的限制,难以实现高效的再吸附制冷。本文利用硫化石墨作为吸附剂的基质,对其导热系数以及渗透率进行了测试比较,优选吸附剂。并且针对再吸附制冷系统建立了相关数学模型,分析不同工况条件下吸附剂工质对的性能。对整个再吸附制冷过程进行模拟仿真,从而得到不同工况下的制冷性能。结果表明,采用新型复合吸附剂的再吸附系统,COP最大可达到0.3以上,SCP最大可达到161 W/kg。Compared with the conventional adsorption refrigeration cycle, resorption refrigeration cycle as a new cooling method has simp- ler structure and higher COP under the same operation condition. Therefore it has a good prospect. However, performance of the system is still greatly influenced by different adsorbents, temperature and pressure for adsorption. In this research, adsorbent with the matrix of ex- panded natural graphite treated with sulfuric acid is developed to study its thermal conductivity and permeability as well as select the supe- rior one. Based on the basic physical properties of the adsorbent andi refrigerant, simulation of whole resorption refrigeration process is set up to obtain the performance parameters under different conditions. According to the simulation results, the highest COP is more than 0. 3 while the best SCP is 161 W/kg.

关 键 词：吸附式制冷循环 硫化石墨 性能系数 仿真 

分 类 号：TB61[一般工业技术—制冷工程] O647.33[理学—物理化学]