Research on performance of mixed absorption refrigeration
for solar air-conditioning
Research on performance of mixed absorption refrigeration
for solar air-conditioning
WAN Zhongmin1, SHU Shuiming2, HU Xinhua2, WANG Biaohua2
1.Department of Physics, Hunan Institute of Science and Technology; 2.School of Energy and Power Engineering, Huazhong University of Science and Technology;
Abstract：A novel lithium bromide/water mixed absorption refrigeration cycle that is suitable for the utilization of solar air-conditioning and can overcome the drawbacks of low system overall efficiency of traditional solar absorption refrigeration air-condition systems is presented. The accessorial high pressure generator was added in the cycle. The lithium bromide solution flowing out from the high pressure generator was mixed with the solution from the low pressure absorber to increase lithium bromide solution concentration and decrease pressure in the high pressure absorber. The performance of a mixed absorption refrigeration cycle was analyzed. The theoretical analysis shows that the highest COP is 0.61, while the highest available temperature difference of heat resource is 33.2°C. The whole coefficient of performance of the solar air-conditioning using mixed absorption cycle is 94.5% higher than that of two-stage absorption. The advantages of solar air-conditioning can be markedly made use of by the cycle.
出版日期: 2008-06-05
引用本文:
. Research on performance of mixed absorption refrigeration
for solar air-conditioning[J]. Frontiers of Energy and Power Engineering in China - Selected Publications from Chinese Universities, 2008, 2(2): 222-226.
WAN Zhongmin, SHU Shuiming, HU Xinhua, WANG Biaohua. Research on performance of mixed absorption refrigeration
for solar air-conditioning. Front. Energy, 2008, 2(2): 222-226.
Assilzadeh F Kalogirou S A et al.Simulation and optimizationof a LiBr solar absorption cooling system with evacuated tube collectorsRenewable Energy 2005 30(8)11431159. doi:10.1016/j.renene.2004.09.017
2
Sumathy K Huang Z C Li Z F Solar absorption cooling with low grade heat source-a strategyof development in South ChinaSolar Energy 2002 72(2)155165. doi:10.1016/S0038‐092X(01)00098‐6
3
Li Z F Sumathy K Technology development in thesolar absorption air-conditioning systemsRenewable and Sustainable Energy Reviews 2000 4(3)267293. doi:10.1016/S1364‐0321(99)00016‐7
4
Pilatowsky I Rivera W Thermodynamic analysis of monomethylamine–watersolutions in a single-stage solar absorption refrigeration cycle atlow generator temperaturesSolar EnergyMaterials and Solar Cells 2001 70(3)287300. doi:10.1016/S0927‐0248(01)00071‐X
5
Assilzadeh F Kalogirou S A Ali Y Simulation and optimization of a LiBr solar absorptioncooling system with evacuated tube collectorsRenewable Energy 2005 30(8)11431159. doi:10.1016/j.renene.2004.09.017
6
Fathi R GuemimiC and Ouaskit S. An irreversible thermodynamic model for solar absorptionrefrigerator.Renewable Energy 2004 29(8)13491365. doi:10.1016/j.renene.2003.07.011
7
Rivera W Xicale A Heat transfer coefficientsin two phase flow for the water/lithium bromide mixture used in solarabsorption refrigeration systemsSolar EnergyMaterials & Solar Cells 2001 70(3)309320
8
Mao Yishen Yu Guohe Absorption and Vapor EjectorRefrigeratorBeijingChina Machine Press 1985 (in Chinese)
9
Yattara A Zhu Y Mosa Ali M Comparison between solar single-effect and single-effectdouble-lift absorption machines (PartI)Applied Thermal Engineering 2003 23(15)19811992. doi:10.1016/S1359‐4311(03)00132‐7
