A study on the control method of single duct VAV terminal unit through the determination of proper minimum air flow

Title
A study on the control method of single duct VAV terminal unit through the determination of proper minimum air flow
Author(s)
강수현[강수현]김효준조영흠
Keywords
DEMAND-CONTROLLED VENTILATION; SYSTEM; TEMPERATURE; STRATEGY; DAMPERS; BOXES
Issue Date
201402
Publisher
ELSEVIER SCIENCE SA
Citation
ENERGY AND BUILDINGS, v.69, pp.464 - 472
Abstract
The objective of this study was proposed a control method for the minimum air flow rate of a VAV terminal unit at an office building. The minimum air flow rate of the VAV terminal unit is the key factor affecting the thermal comfort, indoor air quality (IAQ), stratification and energy consumption, depending on the operating mode of the VAV system. Therefore, selecting the proper minimum air flow is very important. In this study, an algorithm was proposed considering the IAQ and stratification. The vertical air temperature was analyzed to find the supply air temperature that did not cause stratification. The integrated control algorithm with an air flow increase model in the VAV terminal unit and outdoor air intake rate increase model in the AHU was developed by comparing the energy consumption. Finally, the existing and proposed control algorithms were compared through a simulation. The proposed method was found to be more effective than the existing control method. The proposed VAV terminal unit control method satisfies all the conditions of indoor thermal comfort, IAQ and stratification issue. As a result of the energy comparison with the existing control method, the method satisfies not only the indoor thermal comfort, IAQ and stratification issue, but also reduces the energy consumption. (C) 2013 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/33160http://dx.doi.org/10.1016/j.enbuild.2013.11.005
ISSN
0378-7788
Appears in Collections:
중앙도서관 > rims journal
건축학부 > 건축학부 > Articles
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