Performance Simulation of a Solar Powered Vapor Absorption Cooling System

다국어 초록 (Multilingual Abstract)

This paper presets the performance of a single effect absorption cooling systemunder three different climates in Saudi Arabia. The considered system capacity is 10.5kW and ised LiBr/water pair. The study results indicated that condsidering the dynamic response of the cooling cycle increases significantly(close to 30%) the time taken to reach steady-state operations and that the sensitivity of the system to from precipitation of LiBr also inceases. Also, the dynamic performance was investigated inder different heat inputs and resulted in shorter transient period with increasing the heat input. In addition, the performance of the solar absorption system was investigated for a representative summer day in different climatic regions in Saudi Arabia. The results indicated the requirement of different areas of collectors to meet the absorber heating demand from 09:00 a.m. to 04:00p.m. if there is no auxiliary heating. Auxiliaty heatin is required from 04:00p.m. to 09:00a.m.. Finally, the results indicated that the system performs better in Riyadh sity than in Dhahran and Jeddah. This study emphasizes the impertance of taking into consideration the thermal inertia of the system components when analyzing the performance of such systems.

참고문헌 (Reference)

1 M. Naji, 28 : 835-845, 2001

2 F. Calise, "Transient analysis and energy optimization of solar heating and cooling systems in various configurations" 84 : 432-449, 2010

3 A. Iranmanesh, "Transient Characteristics of a Single-Effect Absorption Refrigeration Cycle" 2 : 40-47, 2012

4 A. Ghafoor, "Thermo-economic Optimization of Solar Assisted Heating and Cooling (SAHC) System" 3 : 217-227, 2014

5 P. Zadeh, "The Energy and Exergy ch Ar ch" 4 : 2011

6 J. A. Duffie, "Solar Engineering of Thermal Processes" 2003

7 G. Evola, "Proposal and validation of a model for the dynamic simulation of a solar-assisted single-stage LiBr/water absorption chiller" 36 : 1015-1028, 2013

8 A. Arsalis, "Parametric study and cost analysis of a solar-heating-andcooling system for detached single-family households in hot climates" 117 : 59-73, 2015

9 A. Acuña, "Optimum generator temperature to couple different diffusion absorption solar cooling systems" 45 : 128-135, 2014

10 Z. Li, "Optimal temperature of collector for solar double effect LiBr/H2O absorption cooling system in subtropical city based on a year round meteorological data" 69 : 19-28, 2014

11 V. Mittal, "Modelling and simulation of a solar absorption cooling system for India" 17 : 65-70, 2006

12 C. V Vazhappilly, "Modeling And Experimental Analysis Of Generator In Vapour Absorption Refrigeration System" 3 : 63-67, 2013

13 D. Micallef, "Mathematical model of a vapour absorption refrigeration unit" 9 : 86-97, 2010

14 M. Ozgoren, "Hourly performance prediction of ammonia-water solar absorption refrigeration" 40 : 80-90, 2012

15 B. Le Lostec, "Finite time thermodynamics study and exergetic analysis of ammonia-water absorption systems" 49 : 1264-1276, 2010

16 H. K. Mukhtar, "Dynamic Performance of Solar Powered Vapor Absorption Cooling System in Dhahran – Saudi Arabia" 2018

17 K.E. Herold, "Absorption Chillers and Heat Pumps" CRC Press Inc. 1996