The Comparison and Analysis of Humidity Environment between Floor and Ceiling Radiant Cooling Systems that Combined with Displacement Ventilation

DOI

10.2991/ifeesm-15.2015.36How to use a DOI?

Keywords

Radiant Cooling, Displacement Ventilation, Thermal Stratification, Relative Humidity, CFD.

Abstract

At present, the study on the temperature fields of floor radiant cooling system and ceiling radiant cooling system based on displacement ventilation is more, but for the humidity field research of the two systems is insufficient. There is a thermal stratification in the temperature field of both kinds of radiant cooling systems, and the temperature gradient is significantly different in both systems: the indoor temperature field is relatively uniform and the vertical temperature gradient is small in the ceiling radiant systems. While adopting the floor radiant cooling system, the indoor vertical temperature stratification is more obvious. Humidity field has an impact on the dewing problem of radiant cooling air conditioning system and human body comfort, and whether there are the same features of the humidity field in two kinds of systems as the temperature field are also worth exploring. Therefore, starting with anti-condensation control strategies and working conditions of different moisture quantity, the humidity fields which are in the two kinds of systems that radiating surface location is different are studied in this paper. Results show that in the two systems, there are thermal stratification and humidity stratification, and stratification height is consistent. Under the same initial conditions, the anti-condensation effect of floor radiant cooling combined with displacement ventilation is better.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Kai Sun
AU  - Chuan-hui Zhou
PY  - 2015/09
DA  - 2015/09
TI  - The Comparison and Analysis of Humidity Environment between Floor and Ceiling Radiant Cooling Systems that Combined with Displacement Ventilation
BT  - Proceedings of the 2015 International Forum on Energy, Environment Science and Materials
PB  - Atlantis Press
SP  - 184
EP  - 189
SN  - 2352-5401
UR  - https://doi.org/10.2991/ifeesm-15.2015.36
DO  - 10.2991/ifeesm-15.2015.36
ID  - Sun2015/09
ER  -