This research intended to find out the factors that affect the cooling system EVAP fan's and the appropriate factors to lower temperature, fan made step by step start to determine the factors that affect the value of a fan is a fan speed. The quantity of water flowing through the evaporation of water and the distance between the fan with water, and then select the evaporation plate experiments, this research uses a 2 k Factorial Design trial. Then calculate the number of duplicates in a trial using the power of the test (test of Power) is equal to 95 percent of duplicates is equal to 2 specifies the next level of factors to create a plan for the trial, there are 2 levels of each factor is equal to the speed of the fan and 505.52 707.72. RPM The quantity of water flowing through the evaporation of water sheet equal to 20.57, and 17.14. Litres per minute and the distance between the plates, water evaporation with 30 and 20 cm is equal to the fan.Results from trials with an analysis of variance showed that factors that affect the value of a fan is a fan speed. The quantity of water flowing through the evaporation of water from the pad generate regression equations from the relationship between the value of the fan with the factors that result in estimation of the temperature of the cooling fan is equation (Y) = 0.0359 10.0375-A-B-AB 1.3347 0.0023. When the fan speed is A and B is the quantity of water flowing through the evaporation of water sheet, then the level of the factors that make the lowest temperature value can be used to help calculate Response optimizer program, found that the use of the speed of the fan at 707.72 rpm and the quantity of water flowing through the evaporation of water sheet at 20.57 liters per minute to get the temperature of the fan is equal to 29.35. 1985-310 degrees.
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