PERPINDAHAN PANAS PADA PIPA HEAT EXCHANGER DENGAN PIPA BERBAHAN KACA, TEMBAGA, DAN TEMBAGA YANG DILAPIS RESIN

In this study, a heat exchanger will be designed with the principle of tube-pond, normal water flowing tubes and hot
water-filled ponds. This study aims to determine the heat transfer characteristics of glass pipe, copper, and resin
coated copper.The materials used in the tube were glass, copper, and resin coated copper, polyester resin of yukalac
BTQN 157 and a catalyst of methyl ethyl ketone peroxide. In the test, the water temperature variation in ponds was
70˚C, 80˚C, and 90˚C. At each temperature, the test was carried out by flowing normal water into the tube by
varying the discharge by 1lpm, 0.8lpm, 0.6lpm, 0.4lpm, and 0.2lpm. The values for the temperature in and out of the
water in the tube are obtained. So that the overall heat transfer coefficient value and its effectiveness can be
calculated.The results showed that the higher the discharge, the overall heat transfer coefficient on the tube
increased. where the highest value is in the copper tube meterial at 1 lpm discharge, which is at 80˚C pond
temperature of 1544.163 W / m2˚C. While the smallest value of the overall heat transfer coefficient is the glass
material at the time of discharge 0.2 lpm, which is at a temperature of 90˚C of 199.5889 W / m2˚C