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Adjustment of Valve Opening in Ondol Hot Water Distributor  

Hong, Hi-Ki (Department of Mechanical Engineering, Kyung Hee University)
Kim, Si-Hwan (R&D center, KD Network)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.22, no.7, 2010 , pp. 460-467 More about this Journal
Abstract
In housing units constructed recently in Korea, the length of ondol coil is different in each room, so the flow rate of hot water is adjusted by setting valve opening. If the flow rate is not appropriate for heating load, the room temperature seriously deviates from the set temperature range for comfort. In particular, too small valve opening can induce a noise by cavitation. In order to adjust the valve opening, two methods by zone area and a new method by return temperature rise were modelled and simulated using TRNSYS and EES. As a result, heating energy consumption during one week was the same on three methods, but the room temperature of the new method minimally deviated from the range of set temperature with a low possibility of noise.
Keywords
Ondol; Heating; Building energy simulation; TRNSYS, Constant-flow control;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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3 Solar Energy Lab., 2005, TRNSYS 16.1 reference manual, University of Wisconsin-Madison.
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