Adsorption/Desorption NonEquilibrium Characteristics of Composite MnCl2NH3 Working Pair

Abstract

Abstract: Abstract： This paper investigated the adsorption/desorption nonequilibrium characteristics of composite MnCl2NH3 working pair by comparing with the Clapeyron reaction equilibrium curve. The experimental results showed that under the same condensation/evaporation conditions, for the sorption/desorption process of MnCl2NH3 the Clapeyron curves for different sorption molar quantities were different, i.e., the process of nonequilibrium sorption/desorption was controlled by dual variables, rather than a single variable. The results were much different from theoretical Clapeyron curves. To verify the results, the isobaric sorption process of sorbent was tested. The results showed that the adsorption process was in accord with the experimental Clapeyron curves, whereas the serious desorption hysteresis existed especially for the sorption quantity of 4 mol mol-1. By considering the results of desorption hysteresis, the coefficient of performance (COP) and specific cooling power (SCP) of the working pair were analyzed. A comparison of the equilibrium theoretical and the experimental nonequilibrium analysis results showed that the error of conventional theoretical results of COP and SCP reached 25% and 40%, respectively, indicating that the performance analysis of chemical sorption refrigeration processes should be based on the nonequilibrium sorption performance test.

Key words: Key words： nonequilibrium, desorption, adsorption, manganese chloride, ammonia

CLC Number:

TB 64
TB 61

ZHOU Zhisong，JIANG Long，WANG Liwei，WANG Ruzhu，GAO Peng. Adsorption/Desorption NonEquilibrium Characteristics of Composite MnCl2NH3 Working Pair[J]. Journal of Shanghai Jiaotong University, 2016, 50(04): 583-587.

References

［1］LI T X, WANG R Z, LI H. Progress in the development of solidgas sorption refrigeration thermodynamic cycle driven by lowgrade thermal energy ［J］. Progress in Energy and Combustion Science, 2014, 40(2)：158. ［2］梁杰荣, 李廷勋. 基于SINDA/FLUINT平台的R290房间空调器仿真［J］. 低温与超导, 2011, 39 (2): 4246． LIANG Jierong, LI Tingxun. R290 room airconditioner simulation based on SINDA /FLUINT ［J］. Cryogenics and Superconductivity, 2011, 39(2)：4246. ［3］WANG LW, WANG R Z, LU Z S, et al. Studies on heat pipe type adsorption icemaker for fishing boats: Choice of heat pipe medium and experiments under unsteady heating sources［J］. Energy Conversion and Management, 2006, 47(15/16)： 20812091. ［4］WONGSUWAN W, KUMAR S, NEVEU P, et al. A review of chemical heat pump technology and applications［J］. Applied Thermal Engineering, 2001, 21(15)： 14891519. ［5］VASILIEV L L, MISHKINIS D A, ANTUKH A A, et al. Solargas solid sorption refrigerator［J］. Adsorption, 2001, 7(2)： 149161. ［6］LI T X, WANG R Z, KIPLAGAT J K. Performance analysis of an integrated energy storage and energy upgrade thermochemical solidgas sorption system for seasonal storage of solar thermal energy［J］. Energy, 2013, 50(2)： 454467. ［7］YU N, WANG R Z, WANG L W, et al. Sorption thermal storage for solar energy［J］. Progress in Energy and Combustion Science，2013，39(5)： 489514. ［8］NEVEU P, CASTAING J. Solidgas chemical heat pumps: Field of application andperformance of the internal heat of reaction recovery process［J］. Heat Recovery System & CHP, 1993, 13(3)： 233251. ［9］WANG K, WU J Y. Effective thermal conductivity of expanded graphiteCaCl2 composite adsorbent for chemical adsorption chillers［J］. Energy Conversion and Management, 2006, 47(8)： 19021912. ［10］WANG L W, METCALF S J, THORPE R, et al. Development of thermal conductive consolidated activated carbon for adsorption refrigeration［J］. Carbon, 2012, 50(3)： 977986.

[1]	WEI Xiaojing, ZHAI Shuangling, SHI Xin, GAO Duolong, WEN Xiaohu, LIU Dongmei, REN Tianhui. Effect of Copper-Ammonia Complex on the Oxygen Removal and Corrosion Inhibition Performance of Diethylhydroxylamine [J]. Journal of Shanghai Jiao Tong University, 2022, 56(6): 818-826.
[2]	ZHANG Jinke, MIAO Guangwu, JIN Jiamin, CHEN Yinfei, LU Hanfeng, NING Wensheng, BAI Zhanqi, LIU Wucan. Analysis of Factors and Significances of Adsorption Kinetics R115/NaX System [J]. Journal of Shanghai Jiao Tong University, 2021, 55(9): 1071-1079.
[3]	HAN Honggui, YANG Shiheng, ZHANG Lu, QIAO Junfei. Optimal Control of Effluent Ammonia Nitrogen for Municipal Wastewater Treatment Process [J]. Journal of Shanghai Jiaotong University, 2020, 54(9): 916-923.
[4]	PENG Jiajie, PAN Quanwen, GE Tianshu, WANG Ruzhu. Performance Test of an Adsorption Cooling and Heating Cogeneration System Driven by Solar Thermal Energy [J]. Journal of Shanghai Jiaotong University, 2020, 54(7): 661-667.
[5]	ZHOU Zhikun, YANG Song, JIN Guihua, WANG Junwei, ZHAO Yanzheng. Design and Research of a Detecting System for Hollowing Wall [J]. Journal of Shanghai Jiao Tong University, 2014, 48(11): 1536-1540.
[6]	HAO Ruiying,GE Tianshu,DAI Yanjun. Anti-Condensation Based on DesiccantCoated Metal Surface [J]. Journal of Shanghai Jiaotong University, 2014, 48(11): 1588-1594.
[7]	TAKASAKI Akito1, IIJIMA Suguru1, YAMANE Tomoka1, OKABE Toshio2. Hydrogen Adsorption by Woodceramics Produced from Biomass [J]. Journal of shanghai Jiaotong University (Science), 2012, 17(3): 330-333.
[8]	PAN Jin-feng (潘金凤), WU Ren-ping (吴任平), CHEN Xiao-juan (陈小娟). Preparation of Benzene Adsorption Materials Using Waste Activated Alumina [J]. Journal of shanghai Jiaotong University (Science), 2012, 17(3): 373-376.
[9]	ZHAO Wen-chang (赵文昌), CHENG Jin-ping(程金平), CHEN Ying (陈颖), WANG Wen-hua (王文华). Degradation of Selected Indoor Air Pollutants: Comparison Study of Photocatalytic, Ozone-Assisted Photocatalytic and Amine Adsorption Processes [J]. Journal of shanghai Jiaotong University (Science), 2012, 17(1): 13-019.
[10]	ZHOU Xiang-Man, CHEN Xiao-Ling, WU Jiao, WU Min-Chao, QIN Ping, ZHANG Wu-Gao. Experimental Study of NOx Storage/Reduction (NSR) Using DME as Reducer [J]. Journal of Shanghai Jiaotong University, 2012, 46(05): 666-670.
[11]	AN Qiang-1, ZHAO Bin-1, HE Yi-Liang-2. Heterotrophic Nitrification Capability and its Enzyme Activity of Alcaligenes faecalis strain NR [J]. Journal of Shanghai Jiaotong University, 2012, 46(05): 774-779.
[12]	WANG Jian, HU Yuan-Yang, WANG Li-Wei, WANG Ru-Zhu. Experiments on Adsorption Performance and Simulation on Freezing System for C_aCl₂-B_aCl₂-NH₃Two-Stage Adsorption [J]. Journal of Shanghai Jiaotong University, 2011, 45(09): 1389-1394.
[13]	JIN Zhe-Quan, TIAN Bo, WANG Li-Wei, WANG Ru-Zhu. Study on Thermal Conductivities and Permeabilities of AC/ENG Consolidated Composite Adsorbents [J]. Journal of Shanghai Jiaotong University, 2011, 45(06): 866-869.
[14]	CHENG Yulong,WU Yuyuan,WU Tiehui,LIU Kewei . Experimental Research on the Ternary Solution Absorption Refrigerator with the Solution Heat Exchanger [J]. Journal of Shanghai Jiaotong University, 2010, 44(10): 1378-1381.
[15]	SUN Zhiguo1,CHEN Hongwen2，HU Guoxin1，ZHAO Yu1. Preparation of Adsorbent of Sodium Humate and Its Desulfurization Properties [J]. Journal of Shanghai Jiaotong University, 2010, 44(04): 550-0554.