Integration of a mechanical and thermal compressor booster in combined absorption power and refrigeration cycles

Abstract This paper presents and discusses the performance improvement and operational flexibility of a Single-Stage Combined Absorption Power and Refrigeration Cycle (SSAPRC) with an integrated compression booster. The compression booster is placed between the absorber and the evaporator. A mechanical compressor and later a thermal compressor (vapor-ejector) are used as a compression booster. This added feature is very interesting for this type of cycle, because they generate power that could be used in the cycle itself to produce the compression needed to enhance the cycle’s performance. The energetic and exergetic performance of these new modified combined absorption cycles have been analyzed for typical thermal boundary conditions and design parameters. The integration of a mechanical compressor or a vapor ejector reduces the required driving temperature of the cycle, and when a certain split ratio is exceeded the system can work in dual-output mode producing power and cooling. The use of a vapor ejector further improved the net power output of the system. The proposed cycle configurations have an outstanding adaptability and flexibility to respond to the variation of heat source and heat rejection temperatures by adjusting the compression ratio. These cycles are therefore excellent candidates to provide simultaneous power and refrigeration, using renewable energy sources such as solar thermal energy, biomass or waste-derived fuels in polygeneration systems for remote locations or those with difficult access to the electrical grid.

[1]  Umberto Desideri,et al.  Solar-powered cooling systems: Technical and economic analysis on industrial refrigeration and air-conditioning applications , 2009 .

[2]  F. A. Holland,et al.  Ammonia/lithium nitrate absorption/compression refrigeration cycle. Part II. experimental , 1998 .

[3]  Alberto Coronas,et al.  Industrial heat recovery by absorption/compression heat pump using TFE-H2O-TEGDME working mixture , 2000 .

[4]  F. A. Holland,et al.  Ammonia/lithium nitrate absorption/compression refrigeration cycle. Part I. Simulation , 1997 .

[5]  J. Szargut.  Exergy Method: Technical and Ecological Applications , 2005 .

[6]  J. S. Spevack,et al.  Heat Conversion Systems , 1993 .

[7]  Saffa Riffat,et al.  Recent developments in ejector refrigeration technologies , 2013 .

[8]  M. Udayakumar,et al.  Simulation studies on GAX absorption compression cooler , 2007 .

[9]  J. C. Bruno,et al.  Combined absorption power and refrigeration cycles using low- and mid-grade heat sources , 2014 .

[10]  Yong Tae Kang,et al.  Performance analysis of advanced hybrid GAX cycles: HGAX , 2004 .

[11]  M. Venegas,et al.  Ammonia-lithium nitrate absorption chiller with an integrated low-pressure compression booster cycle for low driving temperatures. , 2010 .

[12]  Danxing Zheng,et al.  Energy saving mechanism analysis of the absorption–compression hybrid refrigeration cycle , 2013 .

[13]  Soteris A. Kalogirou,et al.  Solar thermal collectors and applications , 2004 .

[14]  Å. Melinder.  Thermophysical Properties of Aqueous Solutions Used as Secondary Working Fluids , 2007 .

[15]  Xinguo Li,et al.  A Kalina cycle with ejector , 2013 .

[16]  David S.-K. Ting,et al.  Residential solar air conditioning: Energy and exergy analyses of an ammonia–water absorption cooling system , 2014 .

[17]  D. Y. Goswami,et al.  On Evaluating Efficiency of a Combined Power and Cooling Cycle , 2003 .

[18]  Rosemary Norman,et al.  Low grade thermal energy sources and uses from the process industry in the UK , 2012 .

[19]  Kazuya Goto,et al.  A review of efficiency penalty in a coal-fired power plant with post-combustion CO2 capture , 2013 .

[20]  Srinivas Garimella,et al.  Energy harvesting, reuse and upgrade to reduce primary energy usage in the USA , 2011 .

[21]  Xu Tang,et al.  Depletion of fossil fuels and anthropogenic climate change—A review , 2013 .

[22]  T. J. Kotas,et al.  The Exergy Method of Thermal Plant Analysis , 2012 .

[23]  E. D. Rogdakis,et al.  Performance characteristics of two combined ejector–absorption cycles , 2002 .

[24]  Daniel G. Friend,et al.  A Helmholtz Free Energy Formulation of the Thermodynamic Properties of the Mixture {Water + Ammonia} , 1998 .

[25]  M. Venegas,et al.  Study of an ejector-absorption refrigeration cycle with an adaptable ejector nozzle for different working conditions , 2012 .

[26]  D. Boer,et al.  Performance of double effect absorption compression cycles for air-conditioning using methanol–TEGDME and TFE–TEGDME systems as working pairs , 1998 .

[27]  Mortaza Yari,et al.  An exergoeconomic investigation of waste heat recovery from the Gas Turbine-Modular Helium Reactor (GT-MHR) employing an ammonia–water power/cooling cycle , 2013 .

[28]  M. Udayakumar,et al.  Studies of compressor pressure ratio effect on GAXAC (generator–absorber–exchange absorption compression) cooler , 2008 .

[29]  Ibrahim Dincer,et al.  Exergy: Energy, Environment and Sustainable Development , 2007 .

[30]  Kamaruzzaman Sopian,et al.  Evaluation of adding flash tank to solar combined ejector-absorption refrigeration system , 2013 .

[31]  Jinyue Yan,et al.  Exergy and Pinch Analysis of Diesel Engine Bottoming Cycles with Ammonia-Water Mixtures as Working Fluid , 2000 .

[32]  R. Ventas,et al.  Single-effect absorption refrigeration cycle boosted with an ejector-adiabatic absorber using a single solution pump , 2014 .

[33]  Mortaza Yari,et al.  On the exergoeconomic assessment of employing Kalina cycle for GT-MHR waste heat utilization , 2015 .

[34]  Alberto Coronas,et al.  An overview of combined absorption power and cooling cycles , 2013 .

[35]  S. Chungpaibulpatana,et al.  A review of absorption refrigeration technologies , 2001 .

[36]  Reinhard Radermacher,et al.  Absorption Chillers and Heat Pumps , 1996 .

[37]  Felix Ziegler,et al.  Simulation of the compressor-assisted triple-effect H2O/LiBr absorption cooling cycles , 2002 .

[38]  E. Stefanakos,et al.  A REVIEW OF THERMODYNAMIC CYCLES AND WORKING FLUIDS FOR THE CONVERSION OF LOW-GRADE HEAT , 2010 .

[39]  Junjie Gu,et al.  Second law-based thermodynamic analysis of ammonia/sodium thiocyanate absorption system , 2010 .