Analysis of thermal comfort in vehicle air-conditioning system

• Main Authors: Sam-Ray Wu, 巫善睿
• Other Authors: 張錦裕
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/69442401832348433067

碩士 === 國立成功大學 === 機械工程學系碩博士班 === 95 === With the technology improving, the people have high quality of life. And people use car so frequently that they pay great attention to the air-conditioning, and thermal comfort of a passenger when buying a new car. So creating comfortable driving environment becomes an important ambition for automobile factory in last year. Traditionally, when factory design the air-conditioner system they usually get vehicle indoor information by experimental method, then they can regulate air-conditioner system according the experimental results. But actually the experimental method takes a lot of resources. With numerical technology great developing, many analyzer use numerical method to improve the passenger’s thermal comfort and understand the 3-D flow motion and the thermal behavior within vehicle. However, the indoor vehicles analysis correlated closely with the air conditioner and the outdoor environmental condition. In this steady, the air temperature relation between inlet and outlet vents calculated by NTU theoretical equations for heat exchanger, 3D unsteady tabulate model and conjugate heat transfer at the wall were regard as boundary conditions. Under those boundary conditions, we used numerical analysis software STAR-CD to calculate the air temperature and velocity distributions within vehicle. According the analysis results and PMV (Predicted Mean Vote) thermal comfort model, we can measure the passenger’s thermal comfort, and develop software of thermal comfort analysis.