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Sustainability 2017, 9(11), 2066; doi:10.3390/su9112066

A Study on a Control Method with a Ventilation Requirement of a VAV System in Multi-Zone

1
Department of Architectural Engineering, Graduate School of Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk 38541, Korea
2
School of Architecture, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk 38541, Korea
*
Author to whom correspondence should be addressed.
Received: 8 August 2017 / Revised: 28 October 2017 / Accepted: 31 October 2017 / Published: 10 November 2017
(This article belongs to the Section Sustainable Engineering and Science)
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Abstract

The objective of this study was to propose a control method with a ventilation requirement of variable air volume (VAV) system in multi-zone. In order to control the VAV system inmulti-zone, it is essential to control the terminal unit installed in each zone. A VAV terminal unit with conventional control method using a fixed minimum air flow can cause indoor air quality (IAQ) issues depending on the variation in the number of occupants. This research proposes a control method with a ventilation requirement of the VAV terminal unit and AHU inmulti-zone. The integrated control method with an air flow increase model in the VAV terminal unit, AHU, and outdoor air intake rate increase model in the AHU was based on the indoor CO2 concentration. The conventional and proposed control algorithms were compared through a TRNSYS simulation program. The proposed VAV terminal unit control method satisfies all the conditions of indoor temperature, IAQ, and stratification. An energy comparison with the conventional control method showed that the method satisfies not only the indoor thermal comfort, IAQ, and stratification issue, but also reduces the energy consumption. View Full-Text
Keywords: VAV system; terminal unit; TRNSYS; control method; multi-zone; ventilation requirement VAV system; terminal unit; TRNSYS; control method; multi-zone; ventilation requirement
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Kim, H.-J.; Cho, Y.-H. A Study on a Control Method with a Ventilation Requirement of a VAV System in Multi-Zone. Sustainability 2017, 9, 2066.

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