Proceedings of the 3rd International Conference on Green Building, Civil Engineering and Smart City (GBCESC 2024)

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A Study on the Energy Saving Potential of Adaptive Temperature Control of a VRF System in an Office Building in Guangzhou

Authors
Yuan Gao1, Haisong Zhang2, Yaolin Lin1, *
1University of Shanghai for Science and Technology, 200093, Shanghai, China
2Jinbi Property Limited, 510630, Guangzhou, China
*Corresponding author. Email: ylin@usst.edu.cn
Corresponding Author
Yaolin Lin
Available Online 19 May 2025.
DOI
10.2991/978-94-6463-728-1_54How to use a DOI?
Keywords
Variable Refrigerant Flow System; Adaptive temperature control; Energy saving
Abstract

Under traditional VRF system control, room air temperature is maintained through multiple levels fan speeds (either user-specified or automatic), and regulating the opening of the electronic expansion valve based on the temperature difference between return air and the indoor setpoint temperature. This approach often requires a very low evaporating temperature, leading to energy wastage. Moreover, in regions like Guangzhou with hot summers and mild winters, keeping indoor temperatures excessively low during cooling seasons further increases energy consumption. To address these issues, this study proposes an adaptive control strategy for VRF systems based on automatically reset the supply air temperature, evaporating temperature, condensing temperature, and indoor temperature setpoints. Through a case study of an office building in Guangzhou, it demonstrates that the adaptive control leads to an energy savings of 34.74% compared to the existing control method.

Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 3rd International Conference on Green Building, Civil Engineering and Smart City (GBCESC 2024)
Series
Advances in Engineering Research
Publication Date
19 May 2025
ISBN
978-94-6463-728-1
ISSN
2352-5401
DOI
10.2991/978-94-6463-728-1_54How to use a DOI?
Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Yuan Gao
AU  - Haisong Zhang
AU  - Yaolin Lin
PY  - 2025
DA  - 2025/05/19
TI  - A Study on the Energy Saving Potential of Adaptive Temperature Control of a VRF System in an Office Building in Guangzhou
BT  - Proceedings of the 3rd International Conference on Green Building, Civil Engineering and Smart City (GBCESC 2024)
PB  - Atlantis Press
SP  - 564
EP  - 576
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-728-1_54
DO  - 10.2991/978-94-6463-728-1_54
ID  - Gao2025
ER  -