Experiment for moisture buffering and effect of ventilation rate and volume rate of hydrothermal materials in a single room under steady state exterior conditions

Kenichi Hasegawa, Hiroshi Yoshino, Teruaki Mitamura

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

1 Citation (Scopus)

Abstract

In this paper, the experiment for moisture buffering and effect of ventilation rate and volume rate of the hygrothermal materials is described. The objective of the experiment is to make clear the relationships between the moisture buffering effect and, the ventilation and volume rates of the hygrothermal materials. In the experiment, a layer of gypsum board as hygrothermal materials is placed on the interior surface of the test chamber (4.60 m 3). This chamber is located in the climate room which can control constant temperature and humidity level (20°C and 50%rh). For ventilation, a mechanical fan was installed on the chamber with inlet and outlet. Two series of experiments had been carried out. First series was an experiment of ventilation rate and three conditions (i.e. no ventilation, 1.0 1/h and 5.0 1/h) were adopted. Second series was an experiment of volume late and locations of the gypsum boards. Various sizes and locations of gypsum boards were placed on the interior walls. As a result, the moisture buffering effect would be disappeared in the case of larger ventilation rate. As volume rate increase, the moisture buffering effect is getting smaller. Its effect could be not directly proportional to the volume rate. However, these results included the effect of ventilation rate, so the influence of volume rate and locations was not clear. The next stage of this study will investigate its influence.

Original languageEnglish
Title of host publicationIAQVEC 2007 Proceedings - 6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings
Subtitle of host publicationSustainable Built Environment
Pages991-996
Number of pages6
Publication statusPublished - 2007 Dec 1
Event6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Sustainable Built Environment, IAQVEC 2007 - Sendai, Japan
Duration: 2007 Oct 282007 Oct 31

Publication series

NameIAQVEC 2007 Proceedings - 6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Sustainable Built Environment
Volume1

Other

Other6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Sustainable Built Environment, IAQVEC 2007
CountryJapan
CitySendai
Period07/10/2807/10/31

Keywords

  • Chamber test
  • Climate chamber
  • Gypsum board
  • Moisture buffering
  • Ventilation rate

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment

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  • Cite this

    Hasegawa, K., Yoshino, H., & Mitamura, T. (2007). Experiment for moisture buffering and effect of ventilation rate and volume rate of hydrothermal materials in a single room under steady state exterior conditions. In IAQVEC 2007 Proceedings - 6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Sustainable Built Environment (pp. 991-996). (IAQVEC 2007 Proceedings - 6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Sustainable Built Environment; Vol. 1).