Study On Thermal Discomfort Of Motorcycle Helmet User

Ravichandran, Aravinthaan (2019) Study On Thermal Discomfort Of Motorcycle Helmet User. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Thermal comfort is a state of mind that represents fulfillment with the environment. Thermal comfort varies from one person to another. To maintain thermal equilibrium it is necessary that the heat generated as a result of human activities is made to dissipate at a rate to maintain equilibrium within the body. Discomfort occurs when the heat gain or heat is beyond this result. Climate change is becoming undeniably significant every day which is beneficial neither for human population nor the planet. This directly affect thermal comfort level in our surroundings. However, it is difficult to curb it all at once. It is necessary to look into possible aspects that can be explored and studied that may contribute towards the betterment of the environment. It is important to measure microclimate parameters quantitatively within the helmet and link to the human perception. The importance of the parameters influencing the thermal comfort varies with the climate of the countries. In many cases, the air temperature has been considered the major influencing factor to the thermal comfort and many of the indexes produced are mainly focusing to the determination of the comfort temperature. The purpose of this study is to measure multi-point temperature and relative humidity inside a helmet while human subject wearing it on head using micro sensors. Test rig was developed using three types of the motorcycle helmets which is with full face helmet, open face helmet and half face helmet. The exercise bicycle used for the human subject to sit on it and run it in order for them to out the heat and sweat from their head and body. The micro sensors measure the both temperature and relative humidity which is from the heat transfer from the subject’s head to the helmets. This depends on subject’s body type and head size. There is up to five subjects were tested for each type of helmets. Results give the original measurements of the in-helmet micro climate. Results also show some interested interaction between the in-helmet temperature and relative humidity

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