Experimental Analysis of Effects of Non-Structural Factors on Performance of Liquid-Gas Ejector Driven by Aqueous LiBr Solution

Abstract:

Miniaturization and high-efficiency plays an important role in the further development of absorption refrigeration. In order to improve the mass transfer efficiency, liquid-gas ejector is intended to be used in refrigeration system. Experimental analysis of effects of non-structural factors on Liquid-Gas Ejector driven by aqueous LiBr solution is presented. Solution concentration, solution temperature, evaporator temperature and back pressure are varied to analyze the ejector performance. The results show that the large difference between refrigerant vapor pressure and partial pressure of solution enhances absorption of water into aqueous lithium bromide solution. The optimal solution concentration range is 56.61wt%~57.61wt% when the throat diameter of convergent-divergent nozzle is 1.5mm. Cooling capacity increases with the decreasing of back pressure.

• Periodical: Advanced Materials Research (Volumes 732-733)
• Pages: 472-475
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.732-733.472
• Online since: August 2013
• Authors: Rui Wang*, Hong Tao Gao
• Keywords: Ejector, Experimental Research, Lithium Bromide, Refrigeration

References

[1] Narkoryakov VY, Bufetov NS, Grigor'yeva NI. Fluid Mechanics-Soviet Res Vol.11 (1982), p.97

[2] Burdukov AP, Bufetov NS, Deriy NP, Dorokhov AR, Kazakov VI. Heat Transfer-Soviet Res Vol. 12 (1980), p.118

[3] Yang R, Wood BD. Chem Eng Comm Vol.125 (1993), p.77

[4] Kim KJ, Berman NS, Chau DCS, Wood BD. International Journal of Refrigeration Vol.18 (1995), p.486

[5] Medrano M, Bourouis M, Alberto C. International Journal of Thermal Sciences Vol.41 (2002), p.891

[6] Eames IW ,Wu S. International Journal of Refrigeration Vol. 23 (2000), p.475