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A Study on the Required Supply Water Temperature Calculating Method for the Control of Multizone Radiant Floor Heating System  

Choi, Jeong-Min (Department of Architecture, Graduate School, Seoul National University)
Lee, Kyu-Nam (Department of Architecture, Graduate School, Seoul National University)
Ryu, Seong-Ryong (Department of Architecture, Graduate School, Seoul National University)
Kim, Yong-Yee (Department of Architecture, College of Engineering, Kunsan National University)
Yeo, Myoung-Souk (Department of Architecture, College of Engineering, Seoul National University)
Kim, Kwang-Woo (Department of Architecture, College of Engineering, Seoul National University)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.19, no.1, 2007 , pp. 77-85 More about this Journal
Abstract
One of the most common approaches to achieve better thermal comfort with the radiant floor heating system is supply water temperature control, which is that supply water temperature is varied with outdoor air temperature. But the application of this control method was not easy, because there has been no way to determine the supply water temperature. So in this study, a comprehensive, yet simple calculation method to find out the required supply water temperature is suggested by combining the building heat loss equation and the heat emission model of hydronic radiant floor heating system for single zone. And then using this calculation method, the multizone control method is suggested and confirmed through the thermal simulation. It is shown that indoor air temperature is stably maintained around the set point.
Keywords
Radiant floor heating system; Supply water temperature control; Required supply water temperature of single zone; Produced water temperature by heat source; Multizone control method;
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