Experimental study for a double glazed forced-convection solar collector/regenerator for open-cycle absorption cooling system

2002 ◽  
Author(s):  
Ru Yang ◽  
Pai-Lu Wang
Keyword(s):  
Experimental Study ◽  
Forced Convection ◽  
Solar Collector ◽  
Cooling System ◽  
Absorption Cooling ◽  
Open Cycle ◽  
Absorption Cooling System

Experimental Study of a Forced Convection Solar Collector/Regenerator for Open-Cycle Absorption Cooling

1994 ◽  
Vol 116 (4) ◽  
pp. 194-199 ◽  
Author(s):  
Ru Yang ◽  
Pai-Lu Wang
Keyword(s):  
Experimental Study ◽  
Forced Convection ◽  
Solar Collector ◽  
Cooling System ◽  
Solution Concentration ◽  
Transfer Coefficients ◽  
Individual Parameter ◽  
Absorption Cooling ◽  
Open Cycle ◽  
Solar Cooling System

This paper presents an experimental study of the performance of a forced convection glazed solar collector/regenerator (C/R) operated under the meteorological conditions of Kaohsiung, Taiwan. The C/R is the key component of an open-cycle absorption solar cooling system because its performance directly indicates the system performance. The present results show that the counterflow case can improve the C/R efficiency when inlet solution concentration is low. The effects of individual parameter on the C/R performance are analyzed. Dimensionless heat and mass transfer coefficients are given.

scholarly journals Analysis and Simulation of an Absorption Cooling System Using a Latent Heat Storage Tank and a Tempering Valve

Energies ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1376
Author(s):  
Jesús Cerezo ◽  
Fernando Lara ◽  
Rosenberg J. Romero ◽  
Antonio Rodríguez
Keyword(s):  
Latent Heat ◽  
Solar Collector ◽  
Energy Demand ◽  
Storage Tank ◽  
Heat Storage ◽  
Cooling System ◽  
Latent Heat Storage ◽  
Absorption Cooling ◽  
Transient System ◽  
Absorption Cooling System

The energy consumption for space cooling is growing faster than for any other end-use in buildings, more than tripling between 1990 and 2016. Energy efficiency is an important topic in the drive to reduce the consumption of electricity, particularly in air conditioning. This paper presents a simulation of an absorption cooling system with a parabolic trough collector under dynamic conditions using TRaNsient SYstem Simulation (TRNSYS) software. The thermal analysis seeks to evaluate a storage tank at three different configurations: (1) sensible heat, (2) latent heat, and (3) latent heat incorporating a tempering valve. The latent heat storage tank is a rectangular heat exchanger using MgCl2·6H2O as the phase change material, programmed in EES software; in addition, water and synthetic organic fluid were analyzed as heating fluids. The process was analyzed while varying the solar collector area from 20 to 40 m2 and the storage tank volume from 0.25 to 0.75 m3. The results showed that the solar collector of configuration 1 is unable to satisfy the energy demand. Configuration 2 can satisfy the demand with water and a storage tank volume above 0.50 m3 and 30 m2, while configuration 3 can satisfy the demand above 0.50 m3 and 20 m2 with water.

Design of a Flat Plate Solar Collector for Absorption-Cooling Applications in the Caribbean

Solar Energy ◽  
2004 ◽  
Author(s):  
Luis H. Alva Solari ◽  
Jorge E. Gonza´lez Cruz ◽  
Ming Yei
Keyword(s):  
Flat Plate ◽  
Solar Collector ◽  
Design Methodology ◽  
High Efficiency ◽  
Cooling System ◽  
Optimum Thickness ◽  
Absorption Cooling ◽  
The Caribbean ◽  
Flat Plate Solar Collector ◽  
Absorption Cooling System

The present work deals with the design methodology of a high efficiency flat plate solar collector to be used in absorption cooling system and for climates like Puerto Rico and the Caribbean. Specialized software was used to simulate the thermal behavior of the solar collector and the mechanical stresses. Results such as the optimum thickness of insulation and spacing between the glass and the absorbing surface are given.

Experimental Study for a Double-Glazed Forced-Flow Solar Collector/Regenerator

1998 ◽  
Vol 120 (4) ◽  
pp. 253-259 ◽  
Author(s):  
R. Yang ◽  
P.-L. Wang
Keyword(s):  
Experimental Study ◽  
Forced Convection ◽  
Solar Collector ◽  
Cooling System ◽  
Forced Flow ◽  
Average Efficiency ◽  
Solar Cooling ◽  
Lithium Chloride Solution ◽  
Solar Cooling System ◽  
Driving Potential

Experimental study of a double-glazed forced-convection solar collector/regenerator for absorption solar cooling is presented. The south facing experimental solar collector/ regenerator with 10 deg slope is located at Kaohsiung, Taiwan at 120°18′ E longitude and 22°34′ N latitude. The size of the collector is 1 m wide and 7 m long with an effective regeneration area of 0.9 m by 6 m. Previous study for single-glazed forced-convection solar collector/regenerator operated at the same location has shown to have a best day-average efficiency of 17 percent. In order to raise the system performance, a double-glazed collector/regenerator is constructed such that air can be preheated in the upper channel flow. The preheated air is then conducted into the lower channel where it contacts with the film flow of solar heated lithium-chloride solution and regenerates the solution by carrying out the evaporated water vapor. The preheated air has lower relative humidity but the same humidity ratio since it is sensibly heated. Therefore, the regeneration driving potential is increased. The present study shows that the best day-average efficiency can reach 20 percent which increases the feasibility of the open-cycle absorption solar cooling system. Effects of controlling parameters on the collector/regenerator performance are studied, and heat and mass transfer correlations are also presented for design purposes.

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