<![CDATA[Heat exchangers are widely used in various industries because they have several advantages, heat exchangers have an overall heat transfer coefficient so they are able to transfer heat and have a low pressure drop (∆P), the problem is to reduce the pressure drop but have a high heat transfer coefficient which is very difficult. This research tries to provide a solution by adding Delta Wing shaped fins, with materials namely aluminum, copper, stainless steel and varying the distance and number of fins on the inner pipe (tube) to produce a heat exchanger that has a high heat transfer coefficient and has a pressure drop. the low one. The results showed that the variation in delta wing fin spacing in aluminum was 6.55%, copper 6.4% and stainless steel 11.61%, variation in the number of delta wing fins in aluminum 18.36%, copper 17.98%, stainless steel 20, 18% means that the effect of varying the distance and number of fins on the tube surface can increase the heat transfer coefficient with an increase of 3% for variations of 4/10 to 4/20 and increase the pressure drop.]]>
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