Development of Direct Current (DC) Air Conditioner System

Abstract

The development of direct current (DC) air conditioning system is develop to replace the current conventional air conditioning system. Basically the function is similar to conventional air conditioner which is to change the condition of surrounding in term of temperature and humidity. The concept of this prototype is similar but the way the system operate slightly different. This development happened because of conventional air conditioner now days is consumes larger electricity energy to operate. This is because the system need 230V single phase and 415V three phase to operate base on the condition. Other than that, the conventional air conditioning now days is mostly attached to the wall or in other word is static at one place. This cause the process of maintenance harder and not really efficiency. This system did not use larger electricity to operate but only operate using 12V DC source. This system replace all the component that consume higher energy to the lower energy consumption component. The component use is thermoelectric cooler peltier (TEC) as a medium replace compressor to cool the liquid refrigerant. The thermoelectric cooler peltier (TEC) is use to cool the liquid compound refrigerant which is radiator coolant that attached to the Peltier Cooling Block to increase number of heat transfer in the system. After the refrigerant has been cool until reach the optimum temperature about 23-250C. The liquid refrigerant will pump to the cooling condenser for cooling process. When the condenser reach the optimum temperature, the blower will switch on to blow the air to the surrounding. The air that flow through the cooling condenser will automatically change to the equivalent temperature base on the cooling condenser. This process is called as thermal equilibrium heat transfer concept. This system suitable to use to use at residential and non-residential buildings. As the result this system produce constantly temperature in between 230C to 250C, so this condition is very suitable to use in this county. This system need about three hours to produce a stable temperature which is 240C. The result base on the larger amount of peltier use the faster time taken for refrigerant to cool. As the conclusion, this project can overcome the problem of high electrical usage and also lower the cost of maintenance for the future.