International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 03 | Mar -2017
p-ISSN: 2395-0072
www.irjet.net
Role of Phase Change Materials in Thermal Comfort Garments for BSF Jawans in Rajasthan and Kashmir Paul Gregory F1, DurkeshKarthik P2 1PG
Scholar – Energy Engineering, PSG College of Technology, Coimbatore, India – B.E Mechanical Engineering, Info Institute of Engineering, Coimbatore, India
2Student
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Abstract –Phase Change Materials (PCM) is emerging
On contrast to Rajasthan, BSF Jawans in Kashmir will face extremely cold temperature, where the requirement is to keep the body warmer. The Kashmir region being on the Himalayan Range will face terribly cold temperatures upto -30C. Hence Thermal Comfort has to be chosen to make the body feel warmer.
now as a Storage reservoir of Thermal Energyowing to its Latent Heat property during its change of phase. This PCM when incorporated with garments for BSF Jawans will definitely prove beneficial, as this property will keep them who wear the garment in a state of Thermal Comfort. This review focuses on the types and properties of various Phase Change Materials for Thermal Comfort Garments and also reviews on methodologies to incorporate this PCM with garments and also the nature of applicability for Border Security Force(BSF) Jawans in the Region of Rajasthan and in Kashmir in India where the weather is extremely rough. A CFD Analysis has also been conducted to check the behavior of the Phase Change Material with variation in temperature and the results have been discussed.
Incorporating PCMs for both regions will definitely face challenges in the choice of the Phase Change Material and the nature of use. This research suggests suitable Phase Change Materials and also suggests methodologies to incorporate the PCMs into Garments.
2. CHOICE OF MELTING POINT OF PCM IN RAJASTHAN The optimum thermal comfort required for the region can be chosen only after the determination of the temperature profile of the Region. Hence the maximum and minimum temperature that has occurred in Jaipur, Rajasthan has been measured.
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Rajasthan being in the eastern part of India hosts a destination for BSF Jawans owing to its India-Pakistan International Border. Substantial part of this region is a desert, the Thar Desert (453000 sq.km), where the maximum temperature reached is 350C - 400C on a summer day. 85% of the desert is located in India, the remaining in Pakistan. BSF Jawans in the desert will face severe hot temperatures. Conventional Garments (BSF Uniforms) will definitely stay non-beneficial in producing a cooling effect to the human body. When such garments are incorporated with PCM, it will definitely prove beneficial in making the human body cooler.
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Phase Change Materials are astounding materials that change its phase and store thermal energy. Whenever these PCMs are heated there occurs this change of phase and the input energy is stored as Latent Heat. When these PCMs are brought in contact with a lower energy product, it will return back to its original phase releasing the stored energy to the lower energy product. This property finds applicability in Thermal Comfort Garments (TCG). The main deciding parameter to choose the appropriate PCM is the required thermal comfort temperature range.
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1. INTRODUCTION
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Key Words:Storage Reservoir, Latent Heat, Thermal Comfort.
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Chart -1: Variation of Temperature in Jaipur, Rajasthan From the temperature profile, it can be inferred that a Thermal Comfort of 250C can be chosen. When the temperature is found to reach 250C, it would be better
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