Hourly performance prediction of ammonia–water solar absorption refrigeration

Abstract This paper deals with the hourly performance investigation of solar absorption refrigeration (SAR) system with evacuated tube collector and ammonia–water (NH 3 –H 2 O) solution. The SAR system is presented to simulate the system characteristic variations using hourly atmospheric air temperature and solar radiation data for Adana province in Turkey. The evaluation is performed for the maximum temperature occurrence day on July 29. First, the variations of various parameters, such as absorption refrigeration machine efficiency, condenser capacity and heat transfer rate in the generator and absorber during the day, are calculated for different cooling capacities and generator temperatures. Later, the minimum evacuated tube collector surface area is determined. According to the obtained results, the SAR system is considerably suitable for home/office-cooling purposes between the hours 09:00 and 16:00 in the southern region of Turkey such as Adana province. The most suitable performance of the absorption cooling system is calculated for the generator temperature values equal to or higher than 110 °C. The performance coefficient of the cooling (COP cooling ) varies in the range of 0.243–0.454 while that of the heating (COP heating ) changes from 1.243 to 1.454 during the day. Evacuated tube collector area for a 3.5 kW cooling load capacity is found to be 35.95 m 2 for the region at 16:00 whereas it is 19.85 m 2 at 12:00.

[1]  Clive B. Beggs.  Energy: Management, Supply and Conservation , 2002 .

[2]  Kourosh Javaherdeh,et al.  Simulation of solar lithium bromide–water absorption cooling system with parabolic trough collector , 2008 .

[3]  Rosenberg J. Romero,et al.  Comparison of the modeling of a solar absorption system for simultaneous cooling and heating operating with an aqueous ternary hydroxide and with water/lithium bromide , 2001 .

[4]  Sergio Colle,et al.  Modelling and hourly simulation of a solar ejector cooling system , 2006 .

[5]  Alain Bastide,et al.  Modeling and experimental validation of the solar loop for absorption solar cooling system using double-glazed collectors , 2011 .

[6]  Gilles Notton,et al.  PREDICTING HOURLY SOLAR IRRADIATIONS ON INCLINED SURFACES BASED ON THE HORIZONTAL MEASUREMENTS: PERFORMANCES OF THE ASSOCIATION OF WELL-KNOWN MATHEMATICAL MODELS , 2006 .

[7]  Christopher J. Koroneos,et al.  Solar air conditioning systems and their applicability—An exergy approach , 2010 .

[8]  Y. Çengel,et al.  Thermodynamics : An Engineering Approach , 1989 .

[9]  Mehmet Esen,et al.  Experimental investigation of a two-phase closed thermosyphon solar water heater , 2005 .

[10]  J. R. García Cascales,et al.  MODELLING AN ABSORPTION SYSTEM ASSISTED BY SOLAR ENERGY , 2011 .

[11]  Abdulkadir Sengür,et al.  Modelling of a new solar air heater through least-squares support vector machines , 2009, Expert Syst. Appl..

[12]  Soteris A. Kalogirou.  Recent Patents in Solar Energy Collectors and Applications , 2007 .

[13]  C. A. Infante Ferreira,et al.  Solar refrigeration options – a state-of-the-art review , 2008 .

[14]  Muammer Ozgoren,et al.  Performance of a solar ejector cooling-system in the southern region of Turkey , 2007 .

[15]  Mehmet Esen.  Thermal performance of a solar cooker integrated vacuum-tube collector with heat pipes containing different refrigerants , 2004 .

[16]  Fu Lin,et al.  Performance calculation of single effect absorption heat pump using LiBr + LiNO3 + H2O as working fluid , 2010 .

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

[18]  Kadir Bakirci,et al.  Experimental thermal performance of a solar source heat-pump system for residential heating in cold climate region , 2011 .

[19]  H. G. Shen,et al.  Modeling solar-driven ejector refrigeration system offering air conditioning for office buildings , 2009 .

[20]  Soteris A. Kalogirou,et al.  Simulation and optimization of a LiBr solar absorption cooling system with evacuated tube collectors , 2005 .

[21]  Berhane H. Gebreslassie,et al.  Economic performance optimization of an absorption cooling system under uncertainty , 2009 .

[22]  V. D. Assimakopoulos,et al.  Comparative study of various correlations in estimating hourly diffuse fraction of global solar radiation , 2006 .

[23]  Mustafa Inalli,et al.  Performance prediction of a ground-coupled heat pump system using artificial neural networks , 2008, Expert Syst. Appl..

[24]  Jiaxian Zhu,et al.  Experimental research on LiBr refrigeration – Heat pump system applied in CCHP system , 2011 .

[25]  Carlo Renno,et al.  A thermoeconomic model of a photovoltaic heat pump , 2010 .

[26]  Luis M. Serra,et al.  Monitoring and simulation of an existing solar powered absorption cooling system in Zaragoza (Spain) , 2011 .

[27]  W. Beckman,et al.  Solar Engineering of Thermal Processes , 1985 .

[28]  Mehmet Esen,et al.  Forecasting of a ground-coupled heat pump performance using neural networks with statistical data weighting pre-processing , 2008 .

[29]  Xiaoqiang Zhai,et al.  Experimental investigation and theoretical analysis of the solar adsorption cooling system in a green building , 2009 .

[30]  Sérgio de Morais Hanriot,et al.  Using engine exhaust gas as energy source for an absorption refrigeration system , 2010 .

[31]  Jian Sun,et al.  A mathematical model with experiments of single effect absorption heat pump using LiBr–H2O , 2010 .

[32]  Mustafa Inalli,et al.  Artificial neural networks and adaptive neuro-fuzzy assessments for ground-coupled heat pump system , 2008 .

[33]  Abdulkadir Sengür,et al.  Artificial neural network and wavelet neural network approaches for modelling of a solar air heater , 2009, Expert Syst. Appl..

[34]  Nagamany Nirmalakhandan,et al.  Sustainable desalination using solar energy , 2010 .

[35]  Marc A. Rosen,et al.  Analysis of crystallization risk in double effect absorption refrigeration systems , 2011 .

[36]  Guangming Chen,et al.  A novel absorption refrigeration cycle. , 2010 .

[37]  Wilfrido Rivera,et al.  Performance evaluation of a monomethylamine–water solar absorption refrigeration system for milk cooling purposes , 2004 .

[38]  Adnan Sözen,et al.  Prospects for utilisation of solar driven ejector-absorption cooling system in Turkey , 2004 .