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.

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.

scholarly journals System Design of Solar Absorption Cooling : A Case Study in Building of Engineering Physics Department UGM

KnE Energy ◽  
2015 ◽  
Vol 2 (2) ◽  
pp. 22
Author(s):  
Andang Widiharto ◽  
Didit Setyo Pamuji ◽  
Atik Nurul Laila ◽  
Fiki Rahmatika Salis ◽  
Luthfi Zharif ◽  
...  
Keyword(s):  
Global Warming ◽  
Solar Collector ◽  
Air Conditioning ◽  
Cooling System ◽  
Renewable Energy Sources ◽  
Coefficient Of Performance ◽  
Thermal Coefficient ◽  
Solar Absorption ◽  
Absorption Cooling ◽  
Solar Absorption Cooling

<p>Air conditioning (AC) is one of the most building’s energy consumer, included in building of Engineering Physisc’s Departement, Universitas Gadjah Mada (UGM). The declining of fossil fuel reserves and the increasing effects of global warming, forcing the world to switch to renewable energy sources. This paper discusses the design of solar absorption cooling system to replace conventional AC in seven lecture halls of Engineering Physic’s Departement, UGM. There are some steps that have been done to design the solar absorption cooling, i.e. do a study of the potential availability of solar energy, calculate the cooling loads, analyze the thermodynamic process of the system, determine the type of collector to be used and calculate area of solar collector needed. The thermal coefficient of performance (COP) of the system designed was about 0.84 which could use some types of flat plate solar collector with each area corresponding to each efficiency values. </p><p><strong>Keyword</strong> : Air conditioning; global warming; solar absorption cooling; solar collector</p>

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