Application of Thermo Electric Cooler (TEC) as a Low Cost and Environmentally Friendly Technology in Air Conditioning Systems

Abstract

The use of environmentally unfriendly chemicals (refrigerants) in Air Conditioners (AC) can damage the
ozone layer in the earth's atmosphere which has an impact on global warming. Therefore, an environmentally
friendly cooling system is needed in the application of the Thermo Electric Cooler (TEC) cooling module
technology. TEC when supplied with DC voltage (direct current) one side will become hot, while the other
side will be cold, to maximize the cooling process, the hot side of TEC must be lowered as low as possible
by using a fan, heatsink and thermal paste (thermal grease). Using 6 pieces of TEC 12 V 6A, dimensions 40
x 40 mm and 4 mm thick. TECs are arranged in parallel and electricity is arranged in series. TEC when the
power supply is connected to an electric current source, operating the 6 TECs attached to the heatsink
arranged in parallel and in series will cause one side to cool down (heat absorbed) and the other side to
become hot (heat released). What causes the cold side of TEC to cool is the flow of electrons from a higher
energy level to a lower energy level. To find out the temperature of the Peltier cold results using a DHT22
sensor with an Arduino microcontroller with a programmed temperature that automatically turns off and on.
For the breaker or automatic switch using a 5-volt relay. the use of air conditioners per day (6 hours) is
subject to tariffs Rp. 3,212 and the use of air conditioners for a month (30 days) every day the use of 6 hours
is subject to tariffs Rp. 96,360, so as to enjoy a safe and comfortable atmosphere by using environmentally
friendly and low-cost technology.