A Study of Regeneration Performance in the Hybrid Solar Desiccant System for Making Hot Water and Heated Air

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3rd International Scientific Conference on Applied Sciences and Engineering 27-28 July, 2015 Lebua Hotels and Resorts, 1055 Silom Road, Bangrak, Bangkok 10500 Thailand

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Abstract of Applied Sciences and Engineering, 2015, Vol.3
DOI: 10.18488/journal.1001/2015.3/1001.3
3rd
International Scientific Conference on Applied
Sciences and Engineering
27-28 July, 2015
Lebua Hotels and Resorts, 1055 Silom Road, Bangrak, Bangkok
10500 Thailand
Conference Website: www.scihost.org
14
Paper ID: 63/15/3
rd
ISCASE
A Study of Regeneration Performance in the Hybrid
Solar Desiccant System for Making Hot Water and
Heated Air
Hwi-Ung Choi1
--- Byung-Hwa An2 --- Jung-In Yoon3
--- Chang-Hyo Son4
--- Kwang-Hwan
Choi5
1,2
Graduate School of Refrigeration and Air-Conditioning Engineering
3,4,5
Department of Refrigeration and Air-Conditioning Engineering, Pukyong National University, South
Korea San, Yongdang-Dong, Nam-Gu, Busan
Abstract
Solar thermal energy can be used as a heat source for regeneration of liquid desiccant
in the solar desiccant cooling system. In this process, the heated air and hot water
acquainted from a hybrid solar air-water heater can be used to regenerate the weak
liquid desiccant. The hybrid solar air-water heater has a flat plate solar collector that
can make both hot water and heated air during daytime and the air channels are
installed beneath absorbing plate of the flat plate solar collector for heating water.
Regeneration performance was investigated according to use of hot water and heated
air on the same collecting area. As a result, that regeneration performance, when the
heated air and hot water were used simultaneously, has shown the highest result
about 0.31g/s. In case of using only heated air, mass transfer rate of moisture from
liquid desiccant to air was about 0.22g/s. In addition, it has 0.13g/s of mass transfer
rate when the hot water and heated air were only used. It means that simultaneous
operating process is better than only using hot water or heated air on same collecting
area, even though it has a lower temperature increment of each heating medium and
the necessity of profound study about regeneration performance when the heated air
and hot water are used simultaneously.
Keywords: Solar desiccant system, Liquid desiccant, Regeneration, Hybrid solar air-water heater

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A Study of Regeneration Performance in the Hybrid Solar Desiccant System for Making Hot Water and Heated Air

1. Abstract of Applied Sciences and Engineering, 2015, Vol.3 DOI: 10.18488/journal.1001/2015.3/1001.3 3rd International Scientific Conference on Applied Sciences and Engineering 27-28 July, 2015 Lebua Hotels and Resorts, 1055 Silom Road, Bangrak, Bangkok 10500 Thailand Conference Website: www.scihost.org 14 Paper ID: 63/15/3 rd ISCASE A Study of Regeneration Performance in the Hybrid Solar Desiccant System for Making Hot Water and Heated Air Hwi-Ung Choi1 --- Byung-Hwa An2 --- Jung-In Yoon3 --- Chang-Hyo Son4 --- Kwang-Hwan Choi5 1,2 Graduate School of Refrigeration and Air-Conditioning Engineering 3,4,5 Department of Refrigeration and Air-Conditioning Engineering, Pukyong National University, South Korea San, Yongdang-Dong, Nam-Gu, Busan Abstract Solar thermal energy can be used as a heat source for regeneration of liquid desiccant in the solar desiccant cooling system. In this process, the heated air and hot water acquainted from a hybrid solar air-water heater can be used to regenerate the weak liquid desiccant. The hybrid solar air-water heater has a flat plate solar collector that can make both hot water and heated air during daytime and the air channels are installed beneath absorbing plate of the flat plate solar collector for heating water. Regeneration performance was investigated according to use of hot water and heated air on the same collecting area. As a result, that regeneration performance, when the heated air and hot water were used simultaneously, has shown the highest result about 0.31g/s. In case of using only heated air, mass transfer rate of moisture from liquid desiccant to air was about 0.22g/s. In addition, it has 0.13g/s of mass transfer rate when the hot water and heated air were only used. It means that simultaneous operating process is better than only using hot water or heated air on same collecting area, even though it has a lower temperature increment of each heating medium and the necessity of profound study about regeneration performance when the heated air and hot water are used simultaneously. Keywords: Solar desiccant system, Liquid desiccant, Regeneration, Hybrid solar air-water heater

A Study of Regeneration Performance in the Hybrid Solar Desiccant System for Making Hot Water and Heated Air

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A Study of Regeneration Performance in the Hybrid Solar Desiccant System for Making Hot Water and Heated Air