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Abstract of Applied Sciences and Engineering

July 2015, Volume 3, 3, pp 14

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

Hwi-Ung Choi, Byung-Hwa An, Jung-In Yoon, Chang-Hyo Son, Kwang-Hwan Choi

Hwi-Ung Choi 1 

Byung-Hwa An 1 

Jung-In Yoon 3 

Chang-Hyo Son 3 Kwang-Hwan Choi 3 
  1. Graduate School of Refrigeration and Air-Conditioning Engineering 1

  2. Department of Refrigeration and Air-Conditioning Engineering, Pukyong National University, South Korea San, Yongdang-Dong, Nam-Gu, Busan 3


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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