Optimizing HVAC System Using Vehicle Passenger Thermal Comfort Model

Nur Shuhada, Yusoff (2006) Optimizing HVAC System Using Vehicle Passenger Thermal Comfort Model. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Human comfort in passenger compartment is a prime concern for designers, owners and passengers. Interior climate is one of the main comfort factors during a trip. Besides, it is also very important for interior safety because temperature humidity affect the driver's well-being and thus his or her level of alertness and of course the heating and ventilation system is also responsible for demisting the windscreen and side windows. Recently, there has been a major development in the area of HV AC system using passenger thermal comfort to ensure that the occupants are comfortable staying in the vehicle. More investigation of the design parameters space is conducted to bring the final design closer to the optimum. For this purpose, a model car is selected to perform analysis for thermal comfort inside the model car as well as to investigate the occupant thermal comfort in order to support automotive climate control systems. Based on the experiment, simulation and questionnaire, it is found that the most comfortable condition inside the passenger compartment is where blower is set at the third level speed. At this condition, most of the occupants claimed to be in comfortable state with the temperature around 20°C to 25°C and the highest velocity around 1.5 m/s.

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