DESIGN AND ANALYSIS OF DOUBLE-PIPE HEAT EXCHANGER WITH NEW ARRANGEMENTS OF CORRUGATED TUBES USING HONEYCOMB ARRANGEMENTS

Abstract

Double-pipe heat exchangers are utilized as a part of mechanical procedure to re-cuperate heat between two process liquids. The main objective of this project to augment the heat transfer in a counter flow double-pipe heat exchanger filled with inner tube of honeycomb arrangements. To increase the efficiency of doub-le-pipe heat exchanger is made up of concave and convex corrugated type of outer and in-ner tubes. Hot water (inner tube) and cold water (outer tube) inlet temperatures were maintained at 40 °C and 8 °C, respectively. Investigation were performed for inward tube (high temperature water) and external tube (cool water) volume flow rate was kept at 15 L per minute and 20 L per minute. Different parameters such as overall heat transfer coefficient, Nusselt number, pressure drop, friction factor, convective heat transfer coefficient, and effectiveness were obtained and compared for new arrangements of corrugated tubes filled with and without honeycomb ar-rangements. The analysis was carried out for porosity range is 0.8 and pore densi-ty (greater than 9 parts per litre) to ensure high effectiveness. Maximum effective-ness was obtained for heat exchanger made of concave corrugated outer tube and convex corrugated inner tube with honeycomb structure.