Physical and operating conditions effects on silica gel/water adsorption chiller performance

作者: Ahmed R.M. Rezk , Raya K. Al-Dadah

DOI: 10.1016/J.APENERGY.2010.11.021

关键词: RefrigerantRefrigerationSimulation modelingMechanical engineeringEngineeringAdsorptionCooling capacityElectric powerHeat recovery ventilationChillerProcess engineering

摘要: Abstract Adsorption refrigeration systems are commercially developed due to the need of replacing conventional which utilise environmentally harmful refrigerants and consume high grade electrical power. This paper presents key equations necessary for developing a novel empirical lumped analytical simulation model commercial 450 kW two-bed silica gel/water adsorption chiller incorporating mass heat recovery schemes. The governing were solved using MATLAB® platform integrated with REFPROP® determine working fluids thermo-physical properties. predicted performance within acceptable tolerance hence it was used as an evaluation optimisation tool. investigating effect changing fin spacing on where from its design value minimum permissible increased cooling capacity by 3.0% but decreased COP 2.3%. Furthermore, generation temperature lift feasibility load control tool will be discussed. Genetic Algorithm optimum cycle time corresponding maximum capacity, new 8.3%.

参考文章(35)
S.M. Ameli, B. Agnew, I. Potts, Integrated distributed energy evaluation software (IDEAS) simulation of a micro-turbine based CHP system Applied Thermal Engineering. ,vol. 27, pp. 2161- 2165 ,(2007) , 10.1016/J.APPLTHERMALENG.2005.07.019
MZI Khan, BB Saha, KCA Alam, A Akisawa, T Kashiwagi, None, Study on solar/waste heat driven multi-bed adsorption chiller with mass recovery Renewable Energy. ,vol. 32, pp. 365- 381 ,(2007) , 10.1016/J.RENENE.2006.02.003
MZI Khan, KCA Alam, BB Saha, A Akisawa, T Kashiwagi, None, Performance evaluation of multi-stage, multi-bed adsorption chiller employing re-heat scheme Renewable Energy. ,vol. 33, pp. 88- 98 ,(2008) , 10.1016/J.RENENE.2007.01.012
A.S. Uyun, A. Akisawa, T. Miyazaki, Y. Ueda, T. Kashiwagi, Numerical analysis of an advanced three-bed mass recovery adsorption refrigeration cycle Applied Thermal Engineering. ,vol. 29, pp. 2876- 2884 ,(2009) , 10.1016/J.APPLTHERMALENG.2009.02.008
G. Maggio, L.G. Gordeeva, A. Freni, Yu.I. Aristov, G. Santori, F. Polonara, G. Restuccia, Simulation of a solid sorption ice-maker based on the novel composite sorbent "lithium chloride in silica gel pores" Applied Thermal Engineering. ,vol. 29, pp. 1714- 1720 ,(2009) , 10.1016/J.APPLTHERMALENG.2008.07.026
Takahiko Miyazaki, Atsushi Akisawa, The influence of heat exchanger parameters on the optimum cycle time of adsorption chillers Applied Thermal Engineering. ,vol. 29, pp. 2708- 2717 ,(2009) , 10.1016/J.APPLTHERMALENG.2009.01.005
C.J. Chen, R.Z. Wang, Z.Z. Xia, J.K. Kiplagat, Study on a silica gel–water adsorption chiller integrated with a closed wet cooling tower International Journal of Thermal Sciences. ,vol. 49, pp. 611- 620 ,(2010) , 10.1016/J.IJTHERMALSCI.2009.09.009
Douglas B. Riffel, Ursula Wittstadt, Ferdinand P. Schmidt, Tomás Núñez, Francisco A. Belo, Antonio P.F. Leite, Felix Ziegler, Transient modeling of an adsorber using finned-tube heat exchanger International Journal of Heat and Mass Transfer. ,vol. 53, pp. 1473- 1482 ,(2010) , 10.1016/J.IJHEATMASSTRANSFER.2009.12.001