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2018 Vol.12, Issue 3 Preview Page

Research Article

Development of Control Method of VAV Terminal Unit using Building Load Prediction Model

부하 예측 모델을 활용한 변풍량 터미널 유닛 제어 방안 개발

Hyo-Jun Kim1
,
Young-Hum Cho1
,
Yoon-Bok Seong2*
김 효준1
,
조 영흠1
,
성 윤복2*
1Graduate school, Department of Architectue, Inha University
2Mirae Environment Plan Architects,
1인하대학교 건축학부 대학원
2(주)미래환경플랜건축사사무소
*교신저자. *Corresponding Author. 
30 June 2018. pp. 235-244
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Abstract

The purpose of this study is to propose a control method applying the load prediction model to control VAV terminal unit. The fixed minimum air flow rate control of the conventional VAV terminal unit is difficult to cope with various changes of the indoor space, so it is important to predict the operation and load situation of the system for optimum control. Therefore, in this study, we predict the building indoor load by using the load prediction model which use the information of HVAC system and develop the control method of the VAV terminal unit based on this prediction. In addition, the proposed control method is compared with the conventional control method in terms of indoor air quality and energy consumption using a dynamic simulation program TRNSYS 17. With the application of the control method of VAV terminal unit using the load prediction model, the air flow rate is reduced by 5~20%, and the HVAC energy consumption is reduced by about 20% compared with the conventional control method using the fixed minimum air flow rate. Also, it was confirmed that the indoor temperature and the indoor carbon dioxide concentration maintained the set values.

Keywords
VAV Terminal unit
Minimum air flow rate
Load prediction model
Control method

키워드
변풍량 터미널 유닛
최소풍량
부하 예측 모델
제어 방안
References
1
Cho, Y., Liu, M. (2009) Minimum Air Flow Reset of Single Duct VAV Terminal Boxes. Building and Environment, 44(9), 1876-1885.
2
G. Wang, L. Song. (2012). Air handling unit supply air temperature optimal control during economizer cycles. Energy and Buildings, 49, 310.316.
3
Kang, S., Kim, H., Cho, Y. (2014). A Study on the Control Method of Single Duct VAV Terminal Unit through the Determination of Proper Minimum Air Flow. Energy and Buildings, 69, 464-472.
4
Kim, H., Cho, Y. (2017). A Study on a Control Method with a Ventilation Requirement of a VAV System in Multi-Zone. Sustainability, 9, 2066.
5
Kim, H., Kang, S., Cho, Y. (2015). A study on the control method without stratification of single duct VAV terminal units. Journal of Asian Architecture and Building Engineering, 14(2), 467-474.
6
N. Nassif, S. Moujaes. (2008). A new operating strategy for economizer dampers of VAV system. Energy and Buildings, 40 (3), 289.299.
7
Seong, Y., Cho, Y. (2016). Development and Evaluation of Applicable Optimal Terminal Box Control Algorithms for Energy Management Control Systems. Sustainability, 8(11), 1151.
8
Zhang, B., Li, Y., Lau, J., Liu, M. (2014). Demand control ventilation: Influence of terminal box minimum air flow setting on system energy use, Energy and Buildings 79, 173-183.
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Nishiguchi, J., Konda, T., Dazai, R. (2010). Data-Driven optimal control for building energy conservation. SCIE Annual conference 2010, 116-120.
10
ASHRAE. (2010). ASHERAE Standard 55, Thermal Environmental Conditions for Human Occupancy, ASHRAE.
11
ASHRAE. (2010). ASHRAE Standard 62.1, Ventilation for Acceptable Indoor Air Quality, ASHRAE.
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ASHRAE. (2010). ASHRAE Standard 90.1, Energy Standard for Buildings Except Low-Rise Residential Buildings, ASHRAE.
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California Energy Commission (CEC), (2008). 2008 Building Energy Efficiency Standards for Residential and Non.residential Buildings. California Code of Regulations Title 24, Part 1, CEC.400.2008.001.CMF.
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WILEY. (2014). Priciples of Heat and Mass Transfer 7th.
Information
  • Publisher :Korean Institute of Architectural Sustainable Environment and Building Systems
  • Publisher(Ko) :한국건축친환경설비학회
  • Journal Title :Journal of Korean Institute of Architectural Sustainable Environment and Building Systems
  • Journal Title(Ko) :한국건축친환경설비학회논문집
  • Volume : 12
  • No :3
  • Pages :235-244
  • Received Date : 2018-04-26
  • Revised Date : 2018-06-22
  • Accepted Date : 2018-06-25
  • DOI :https://doi.org/10.22696/jkiaebs.20180020
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