Factors which Influence the Thermal Comfort Inside of Vehicles

This research paper presents a review of factors which influence the thermal comfort inside of vehicle. These factors can be classified in two classes: measurable factors, which include: the air temperature, air velocity, radiant temperature and relative humidity and personal factors which include: activity level and clothing insulation. An optimal level of the thermal comfort inside a vehicle can only be achieved by taking into account these measurable and personal factors. Based on these factors we can calculate Predicted Mean Vote (PMV) which represents the average thermal sensation felt by a group of people placed in the vehicle and determining the Predicted Percentage of Dissatisfied (PPD) index, which is the quantitative measure of thermal comfort of a group of people at a particular environment.