Currently transport has played an important role in everyday life resulting in huge traffic jams caused by big city streets and pollution problems from global warming to global temperatures are rising. Since humans are creatures that prefer comfort in all areas which contrasts with the higher temperatures of the Earth. Currently the use of air conditioning a lot. To modify the temperature is reduced in the range 2 3 to 25 degrees Celsius makes people feel comfortable. However the use of air conditioning in the car cabin cooling efficiency can be increased to a higher level than it is by cooling the refrigerant. The aim of this research is to test and compare the performance of car air conditioning systems usually equipped with a heat exchanger. Using water from the condensation of evaporator as a medium for heat transfer. By installing the equipment at the outlet of the condenser. This causes the temperature of the refrigerant is low. The pipe lengths in the equipment from the calculation of 1 .2 meters and copper lines that increases the length of the tubes was calculated to compare with a length of 1.6 meters to test the speed of the compressor 1000 1500 2000 and. 2500 rpm and a wind speed of 20 35 and 50 kilometers per hour. The results of experiment found that the temperature refrigerant equipment decreased from an average of 1.6 degrees Celsius the pipe length of 1.2 meters and 1.6 meters of pipe temperature drops 1.8 degrees average temperature attended Eva sufficiently reduced operator. It increases energy efficiency ratio averaged 6.68% of the pipe length 1.2 m and 22.24% at a length of 1.6 meters as well as to increase the coefficient of performance of the air conditioning system. 6 .6 9 % of the pipe length of 1.2 meters and a length of 1.6 meters at 22.4% with the key factor in optimizing the cars air conditioning system. Making the refrigerant from the condenser the temperature drops to pull heat out of the cabin through evaporator higher.

This research was studied to determine the optimum value for condition based maintenance of split type air conditioner by measuring the temperature humidity and flow of air through the fan coil unit. Measuring electric current and voltage of split type air conditioner. Find the energy efficiency ratio (EER) based on the actual use compared to the EER was determined by the manufacturer. To find the suitable maintenance and cleaning air conditioner for each. In conducting this research is split type air conditioner. Rated cooling 25000 Btu/hr. Rated power 2291 watts. Rated current 9.89 amperes. Rated voltage 220 volts single phase. Using the refrigerant R-22.EER 11.02Btu/hr/watts. Running 24 hour sperdayat a temperature of 18°C. Research indicates that the EER before maintenance is equal to6.23Btu/hr/watts. After maintenance is the EER of 20.2Btu/hr/watts or EER value the increase was 69%. Thus preserving the EER of air conditioner. The condition based maintenance in reasonable time is one way that can help save energy.

This research aimed to find the possibility of increasing the efficiency of the split type air conditioner by using the cool air from a ventilation fan in the air conditioning room for cooling the condenser. Two simulation rooms size 120x120x200 centimeters were constructed. The first room was installed the evaporator and the second room was installed the condenser and a ventilation fan in the lower part of the air conditioning room to deliver the cool air for cooling the condenser. Then the system was tested and compared the energy efficiency ratio and the reduced power consumption between turning on and turning off a ventilation fan. The results of the proposed air conditioner system observed from the various load conditions at 0% 30% 60% and 100% The surrounding temperature of the condenser ranged in 30C 40C and 50C It was found that the energy efficiency ratios increased in the range of 2.94% to 5.92% and the power consumptions decreased in the range of 4.56% to 12.5% The possibility of increasing the efficiency of the air conditioner system by using the cool air from ventilation fan in the air conditioning room for cooling the condenser was verified by the increased energy efficiency ratios and the reduced power consumptions.

This paper is proposed a compressor of spilt type air conditioning modification for using with variable speed drive to control room temperature. This technique is implemented by modified reciprocating compressor of 220 V single phase air conditioner 12500 BTU to 3 phase 220 volt in order to connect with inverter variable speed drive which has input 220 V single phase and output 3 phase 220V. The result of experimental is found that modified compressor can be operated in normal condition at maximum speed. The suction pressure is 65 psig discharge pressure is 250 psig and mean of motor current is 6.48 Ampere. The proposed modified compressor can be applied with conventional split type air conditioning by change the starting method from direct start online into soft start with variable speed drive

This paper presents the results of tests to study the energy efficiency of air conditioners Split 9000 BTU test the air in normal operation and when the tune parts. of Evaporator units use DC power from solar energy. Power of the test in normal operating conditions the air power and average about 820 watts on system configuration and operation of Evaporator units. 645 air watts average power consumption can be reduced up to 175 watts of electricity equivalent to 21.34% of them compare the energy efficiency of the air conditioner from the label number 5 on the test. The energy efficiency of a 14.41 11.55 a 24.76% increase in energy efficiency