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2세부 | [성균관대학교] Energy-Saving Potential of Extending Temperature Set-Points i…

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작성자 김주욱 작성일20-09-26 20:10 조회26회 댓글0건

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Building energy savings and occupant thermal comfort are the main issues in building

technology. As such, the development of energy-ecient heating, ventilation, and air-conditioning

(HVAC) systems and the control strategies of HVAC systems are emerging as important topics in

the HVAC industry. Variable refrigerant flow (VRF) systems have ecient energy performance,

so the use of VRF systems in buildings is increasing. However, most studies on VRF systems focus

on improving mechanical eciency, with few studies on energy-ecient control while satisfying

the thermal comfort of occupants. The goal is to estimate the energy-saving potential of adjusting

the temperature set-points and dead-band (range) in VRF air-conditioned building. To do so,

we analyzed the influence of control strategies of a VRF system on human thermal comfort and

energy consumption using a simulation method. The results showed that energy consumption can be

reduced by 25.4% for predicted mean vote (PMV)-based control and 27.0% for the American Society of

Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) comfort range control compared

with the typical set-point temperature control of a VRF system. The indoor thermal environments

of the analyzed control strategies are controlled in the thermal comfort range, which is based on a

PMV at 0.5. Compared with the typical set-point control, PMV and ASHRAE comfort range-based

control reduced the operation time of the compressor in the VRF system.

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