TY - JOUR TI - Design and analysis of double-pipe heat exchanger with new arrangements of corrugated tubes using honeycomb arrangements AU - Haj Maideen Risuwana Begam AU - Somu Sivashankar JN - Thermal Science PY - 2020 VL - 24 IS - 1 SP - 635 EP - 643 PT - Article AB - Double-pipe heat exchangers are utilized as a part of mechanical procedure to recuperate 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 double-pipe heat exchanger is made up of concave and convex corrugated type of outer and inner 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 arrangements. The analysis was carried out for porosity range is 0.8 and pore density (greater than 9 parts per litre) to ensure high effectiveness. Maximum effectiveness was obtained for heat exchanger made of concave corrugated outer tube and convex corrugated inner tube with honeycomb structure.