Optimization of Control Strategies for the Radiant Floor Cooling System Combined with Displacement Ventilation: A Case study of an Office Building in Jinan, China

Authors

  • Jiying Liu Shandong Jianzhu University, Jinan 250101, China
  • Jing Ren Shandong Jianzhu University, Jinan 250101, China
  • Linfang Zhang Shandong Jianzhu University, Jinan 250101, China
  • Xiaona Xie Shandong Jianzhu University, Jinan 250101, China
  • Moon Keun Kim Xi’an Jiaotong-Liverpool University, Suzhou 215123, China
  • Linhua Zhang Shandong Jianzhu University, Jinan 250101, China

DOI:

https://doi.org/10.15377/2409-9821.2019.06.5

Keywords:

Radiant floor cooling system, displacement ventilation, TRNSYS, control strategy, indoor environment.

Abstract

 The radiant floor cooling system, as a thermally activated building system, has attracted significant attention as it can save energy consumption and shift the building load. However, due to its characteristic that building thermal mass has a significant influence on the system performance and indoor environment, the control strategies should be seriously accounted for. Moreover, its performance is highly related to the shift condition of cooling load during the daytime and different weather conditions, therefore, realistic operation will cause the increments of peak load if the control strategy is neglected. This study presented two common strategies including intermittent operation and weatherforecast-based control strategies. The radiant floor cooling system combined with displacement ventilation system in a typical office building located in Jinan was established using the TRNSYS program. The results showed that the energy consumption decreased by 3.3% to 7.5% when the different intermittent operation strategies were applied. The weatherforecast- based control strategy can improve indoor thermal environment by increasing/deceasing the water supply flow rate by up to 25% in advance. This study concluded that the application of intermittent operation and weather-forecast based control strategies can regulate the operation of radiant floor system and reduce the building energy use.

Author Biographies

Jiying Liu, Shandong Jianzhu University, Jinan 250101, China

School of Thermal Engineering

Jing Ren, Shandong Jianzhu University, Jinan 250101, China

School of Thermal Engineering

Linfang Zhang, Shandong Jianzhu University, Jinan 250101, China

School of Thermal Engineering

Xiaona Xie, Shandong Jianzhu University, Jinan 250101, China

School of Thermal Engineering

Moon Keun Kim, Xi’an Jiaotong-Liverpool University, Suzhou 215123, China

Department of Architecture

Linhua Zhang, Shandong Jianzhu University, Jinan 250101, China

Shandong Province Green Building Collaborative Innovation Center

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Published

2019-12-31

How to Cite

1.
Jiying Liu, Jing Ren, Linfang Zhang, Xiaona Xie, Moon Keun Kim, Linhua Zhang. Optimization of Control Strategies for the Radiant Floor Cooling System Combined with Displacement Ventilation: A Case study of an Office Building in Jinan, China. Int. J. Archit. Eng. Technol. [Internet]. 2019Dec.31 [cited 2021Sep.25];6(1):33-48. Available from: https://www.avantipublishers.com/jms/index.php/ijaet/article/view/803

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