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Enthalpy and Exergy Analysis of Domestic Desiccant Air Conditioner With Cooling Dehumidification and Heating Humidification Using Process Simulator

[+] Author Affiliations
Shun Hirano, Yoshinori Hisazumi, Tsukasa Hori

Osaka University, Suita, Japan

Tsutomu Wakabayashi, Akira Kishimoto, Hakaru Enomoto, Kentaro Ueda

Osaka Gas, Osaka, Japan

Paper No. POWER2011-55368, pp. 465-472; 8 pages
doi:10.1115/POWER2011-55368
From:
  • ASME 2011 Power Conference collocated with JSME ICOPE 2011
  • ASME 2011 Power Conference, Volume 1
  • Denver, Colorado, USA, July 12–14, 2011
  • ISBN: 978-0-7918-4459-5
  • Copyright © 2011 by ASME

abstract

To popularize the use of desiccant air conditioners in residences, a system that can supply cooled and dried air in summer as well as heated and humidified air in winter is proposed. An evaporative cooler that affords an increase in cooling capacity and the amount of humidification is used in this system. The results of the enthalpy and exergy analyses, performed using a process simulator, showed that significant exergy losses occurred at the blower, heater, and desiccant rotor. In addition, exergy loss occurred at the direct evaporative cooler in heating humidification. Furthermore, it was found that there exists an optimal water temperature that yields peak exergy efficiency from the desiccant rotor.

Copyright © 2011 by ASME

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