Simulation of solar hot-water supply and air-conditioning/ventilation system

Yoshihisa Momoi, Ryuichiro Yoshie, Akira Satake, Hiroshi Yoshino

Research output: Contribution to conferencePaper

Abstract

As the solar thermal system with the floor heating and the hot-water supply system need low temperature of 40-50 degC, the effectiveness of solar collector is high. However, in the summer season, floor heating is unnecessary, and so there emerges a lot of surplus solar heat. By utilizing such surplus heat in summer as heat source for desiccant dehumidification activated with hot water at a temperature of about 70 degC 1), it would be possible to use a solar heat collecting system efficiently all year round. Therefore, a new solar thermal system was developed with the purpose of utilizing solar heat with high efficiency all year round. In this paper, we reported that the field measurement in winter and the numerical simulation using TRNSYS for the annual performance evaluation of the developed solar thermal system ware carried out. As a result, it was found that annual system COP was as high as over 4, and it is possible to reduce running cost by about 9% by installing the cheaper midnight heating operation control based on the weather forecast of the following day.

Original languageEnglish
Pages1363-1369
Number of pages7
Publication statusPublished - 2011
Event12th Conference of International Building Performance Simulation Association Building Simulation 2011, BS 2011 - Sydney, NSW, Australia
Duration: 2011 Nov 142011 Nov 16

Other

Other12th Conference of International Building Performance Simulation Association Building Simulation 2011, BS 2011
CountryAustralia
CitySydney, NSW
Period11/11/1411/11/16

ASJC Scopus subject areas

  • Computer Science Applications
  • Building and Construction
  • Architecture
  • Modelling and Simulation

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