This content is not included in your SAE MOBILUS subscription, or you are not logged in.
A study on the effect of different glasses and its properties on vehicle cabin during soaking at hot ambient conditions using 1D simulation
ISSN: 0148-7191, e-ISSN: 2688-3627
To be published on April 14, 2020 by SAE International in United States
Increase in traffic conditions and global increase in the ambient temperature during the summer season, heat load in the vehicle cabin is also increasing, creating a huge thermal discomfort for the passengers. There are two scenarios in which these adverse conditions can be a problem, one is when driving the vehicle in traffic condition and another one is when the vehicle is parked in the open sun both during the summer season. While for the first scenario, at least the air conditioner can be switched on, for the soaking scenario the cabin temperature can reach alarming levels which may have serious discomfort and health effects on the human entering vehicle. Although there are options of remote switching on of air conditioners, they are restricted to vehicles having an automatic transmission only. Considering the different parts of cabin, the glasses occupy majority of the portion which is exposed to the sunlight and that transmit the heat directly into the cabin, which in turn is absorbed by different materials resulting in alarming temperature levels in cabin when parked in open sun for a prolonged duration of time. This paper concentrates on the various glasses used at different locations in the vehicle like wind shield, sunroof, side windows, etc. The study involves collecting different types of glasses available and using them at different locations to study its impact on the cabin temperature when soaked for a particular duration of time in same atmospheric conditions. This study was performed using the one dimensional (1D) simulation software Simcenter Amesim®. The cabin for the selected vehicle was built by considering the different components, its properties, etc., Details of glasses like transmittance, absorbance, thickness, specific heat capacity, etc. was collected and was used as the input to this study. Results were collected with different combination of glasses. A detailed analysis of the results showed the improvement each combination of glasses offered on the cabin temperature value after the stipulated duration at same environment conditions. This study results can be used for reducing the cabin soaking temperature at different customer touch points, to provide a relatively better comfort for the humans while entering vehicle after soaking and also to improve the air conditioning performance.