Evaporator-Washer and Inspection by Snake Scope Camera

Abstract

The purpose of this research was to design and efficiency a evaporator-wash and inspection by snake scope camera. It made of 2 inch steel box (wide x long x high = 59 x 58.5 x 70 centimeters) and equipment. The researchers compared temperature and wind speed before and after clean an evaporator set. We got an anemometer and temperature detector (Models DA 40) measured temperature and wide speed in passenger seat in the first-fourth fan speed position, and we have reckoned time every a minute until five minutes. The researchers checked evaporator that dirty before cleaning. We spayed an evaporator by a pump light pressure (about 35 bar) to make the dirty stain stuck weaken. Then, we cleaning solution and soak an evaporator (prepare to soak about 3-5 minutes). After that, it was sprayed and dried again, and we used Snake Scope camera for check cleanliness. The results showed that the first position, the temperature get 1.2C dropped and the wind speed get 2.2 m/s increased. The second position, the temperature get 1.5C dropped and the wind speed get 1.7 m/s increased. The third position, the temperature get 1.3C dropped and the wind speed get 10.8 m/s increased. And the last position, the temperature get 4.2C dropped and the wind speed get 3.9 m/s increased. From the information, we found that the performance of the automotive air conditioning system is better. The temperature is dropped and the wind speed is increased. It is compared with the pre-wash, then there is 32% difference.