Study of boiling behavior of surfactant added saline water over coated surface

Abstract

The present article is focused on two phase heat transfer experiment, conducted over plain and porous coated circular tube of 20�mm diameter with 130�mm heating length in the quiescent pool of fluid at atmospheric pressure. The heat flux is varied from 20.19�70.22�kW/m2. The concentration of SDS and TritonX-100 are varied from 100 to 1200�ppm and 100�400�ppm in NaCl solutions respectively. It is found that higher nucleate boiling heat transfer coefficient obtained on plain tube as well as porous coated tube at SDS_400�ppm and TritonX-100_100�ppm. However, the maximum enhancement found in SDS surfactant. By increasing the concentration of SDS and TritonX-100, the nucleate boiling heat transfer�decreases and minimum value found at 1200�ppm and 400�ppm respectively. As compared to the plain tube with plain NaCl solution, an enhancement of 51.43�65.74% found in the nucleate boiling heat transfer coefficient for the porous coated tube. At SDS_400�ppm and TritonX-100, an enhancement of the nucleate boiling heat transfer coefficient found about 46.42�57.71% and 36.75�50.21% for the plain tube. In general, the nucleate boiling heat transfer coefficient increases from plain NaCl to TritonX-100 to SDS for both the plain as well as porous coated surface. � 2020, Springer-Verlag GmbH Germany, part of Springer Nature.