Adsorption Refrigeration Characteristics of Attapulgite Based Calcium Chloride Composite Adsorbents
The composite absorbent (CAds-AT-10) mainly used attapulgite and CaCl2 as the resources for adsorption refrigeration were prepared by the dissolution-mixed method, and the content of attapulgite in CAds-AT-10 was 10％. Adsorption isotherms of ammonia on CAds-AT-10 were determined by positive gravimetric method. Adsorption-desorption cycle performance and cooling characteristics of CAds-AT-10-ammonia working pairs was evaluated by self-made adsorption-desorption measuring device. Experimental results show that the equilibrium capacity of ammonia on the CAds-AT-10 is up to 1.1kg/kgads at 30℃, is equal to that of CaCl2. The conditions of loading density 600g/l, adsorption temperature 30℃, ammonia evaporation pressure 0.25 MPa, desorption temperature 300℃, adsorption capacity of ammonia on the CAds-AT-10 and its cyclic adsorption capacity is 0.89~0.92 kg/kgads and 0.55~0.58 kg/kgads, respectively, which is 1.7 times than that of CaCl2-ammonia working pairs. The cooling capacity is up to 761.84kJ/kgads, which increased by 70％ compared to CaCl2/ ammonia. What’s more, CAds-AT-10 has excellent adsorption and desorption stability.
Calcium Chloride Attapulgite Composite Adsorbent Adsorption Capacity Cooling Capacity
Yi Wan Quanguo Li Zhengqiu Rui Qun Cui Haijun Chen Haiyan Wang Huqing Yao
College of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China
国际会议
4th International Symposium on Heat Transfer and Energy Conservation(第四届传热与节能国际研讨会 ISHTEC2012)
广州
英文
1-4
2012-01-06（万方平台首次上网日期，不代表论文的发表时间）