Research on Regulation Method of Variable-Air-Volume Air Conditioning System with “Personal Space”

Tingting Chen (), Mingyuan Zhang, Shaoqing Han and Yuhang Han
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Tingting Chen: School of Thermal Engineering, Shandong Jianzhu University, Jinan 250101, China
Mingyuan Zhang: Gas Heating Station, Jinan Municipal Engineering Design Group, Jinan 250031, China
Shaoqing Han: School of Thermal Engineering, Shandong Jianzhu University, Jinan 250101, China
Yuhang Han: School of Thermal Engineering, Shandong Jianzhu University, Jinan 250101, China

Energies, 2024, vol. 17, issue 20, 1-23

Abstract: In large public facilities, such as airport terminals or open-plan office spaces, the HVAC system typically consumes substantial amounts of energy. However, individuals often gather at specific areas while other zones are occupied by transient or occasional users. To minimize operational energy usage, this paper aims to reduce thermal comfort demands in non-targeted areas. This paper introduces a method for regulating the thermal environment around occupants exclusively in the variable-air-volume (VAV) air conditioning running mode. The investigation utilizes Airpak modeling and experimental verification techniques. Additionally, an analysis of temperature field and velocity field distributions within the room under the “personal space” operation mode is presented. The results suggest that adjusting the numbers of air vents, openings, airflow velocities, and air supply orientations can establish a comfortable thermal environment for inhabitants and reduce the overall ADPI value. The combined air supply mode leads to a 16.7% reduction in power usage compared to traditional full-space operation.

Keywords: VAV air conditioning system; “personal space”; airflow distribution; thermal environment evaluation index (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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