Study on energy-efficiency of desiccant outdoor air-conditioning unit for a dedicated air-conditioning system

Koichi Kawamoto, Wanghee Cho, Hitoshi Kohno, Shizuo Iwamoto, Makoto Koganei, Ryozo Ooka, Shinsuke Kato

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The purpose of this study is to realize energy efficient features for a dedicated desiccant air-conditioning system throughout the season, and propose a new high-efficiency application of this system. Many advanced air-conditioning systems are intended to reduce energy and/or space only for sensitive heat conditioning. During the dehumidification season, the results show that a latent heat conditioning system using a desiccant air-conditioner achieves over 20% higher energy efficiency than conventional systems. A new humidification system that combines a desiccant outdoor air-conditioning unit and heat-pump is proposed for the winter season. The experimental results show that the humidification performance satisfies the minimum demand for an outdoor air conditioner in many areas of Japan, but the energy efficiency is slightly inferior to that of traditional boiler systems. Some improvements in the structure and operation of this system are suggested to improve the higher energy efficiency.

Original languageEnglish
Title of host publication24th IIR International Congress of Refrigeration, ICR 2015
PublisherInternational Institute of Refrigeration
Pages3025-3032
Number of pages8
ISBN (Electronic)9782362150128
DOIs
Publication statusPublished - 2015
Event24th IIR International Congress of Refrigeration, ICR 2015 - Yokohama, Japan
Duration: Aug 16 2015Aug 22 2015

Publication series

NameRefrigeration Science and Technology
ISSN (Print)0151-1637

Other

Other24th IIR International Congress of Refrigeration, ICR 2015
CountryJapan
CityYokohama
Period8/16/158/22/15

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Condensed Matter Physics

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