In the present study the effects of the addition of four drag reducing agents (DRA), including carboxy methyl cellulose with high molecular weight (DRA1) and medium molecular weight (DRA2), polyacrylamide (DRA3) and the natural polymer, xanthan gum (DRA4), to water on the pressure drop and heat transfer performance in a finned tube-heat exchanger were compared. Laminar flow (Reynolds number (Re) <1400) was studied to transfer heat between water and air in the finned tube heat exchanger. The results showed that DRA1, with a maximum %DR of 26%, and DRA4, with a maximum %DR of 5%, were the highest and the lowest obtained results, respectively. In the case of heat transfer reduction percentage (%HTR), DRA4, having more than 34.5%, was the highest, and DRA1, with about 13.7%, was the lowest result for the concentration range of 0-100 ppm and temperature range of 40–65 °C.

在本研究中，添加四种减阻剂（DRA）的效果，包括高分子量（DRA1）和中分子量（DRA2）的羧甲基纤维素，聚丙烯酰胺（DRA3）和天然聚合物黄原胶（DRA4） ），对水在翅片管式换热器上的压降和传热性能进行了比较。研究了层流（雷诺数（Re）<1400）在翅片管换热器中在水和空气之间传递热量。结果显示，最大DR最高的DRA1为26％，最大DR最高的DRA4为5％。就热传递减少百分比（％HTR）而言，DRA4最高，超过34.5％，而DRA1最高，约为13.7％，