Many of vehicles are equipped with heating, ventilating and air conditioning system. In todayâ€™s world, no one feel comfortable in a vehicle without HVAC system. Therefore, HVAC becomes an integral part of human life. Todayâ€™s present HVAC system is very efficient and reliable but it has some demerits. It has been observed during the last two decades that the O3 â€“layer is slowly destroyed because of the refrigerant (CFC and HFC) used for the refrigeration and air â€“ conditioning purposes. A single molecule of HFCâ€™s can destroy thousands of O3 molecules and thatâ€™s why it has created a threat for the not only to maintain earth eco system stable but also to existence of earth. Even the percentage of HFCâ€™s are emitted into the atmosphere compared to CO2 is negligible but its global warming effect is few thousand times of CO2. We will try to overcome these demerits by replacing the existing HVAC system by newly emerging thermoelectric couple or cooler which works on peltier and seebeck effect.
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