用户登录 购物车
图书馆订购 Guest
主页 旧刊 有关人员 未来大会

ISSN 在线: 2688-7231

ISBN 打印: 978-1-56700-497-7 (Flash Drive)

ISBN 在线: 978-1-56700-496-0

Proceedings of the 25th National and 3rd International ISHMT-ASTFE Heat and Mass Transfer Conference (IHMTC-2019)
December, 28-31, 2019, IIT Roorkee, Roorkee, India

Investigations on heat transfer and friction factor characteristics of Graphene Oxide/water through A Heat Exchanger with Turbulator propeller insert

Get access DOI: 10.1615/IHMTC-2019.640
pages 377-382

摘要

Heat exchangers are used in diverse processes ranging from conversion, utilization and recovery of thermal energy in various industrial, commercial & domestic applications. In order to transport the desired energy rate with cost and size effectiveness, a combined augmentation technique could be considered as one among many options. The present work aims to investigate heat transfer augmentation using a combination of propeller type metallic turbulators/normal twisted inserts (with different twist ratios TR = 20, 13.3, 9.8) and volume concentrations (0.05%, 0.1%, 0.15%) of Graphene Oxide (GO) nanofluid, for Reynolds number ranging from 500 to 5000. Experimental investigation reveals significant rise in heat transfer to the extent of 6.26% with the twisted insert having a twist ratio of 13.3, and 8.72% using propeller turbulators fitted with ten propellers in 0.15% by volume of nanofluid. The combined heat transfer augmentation technique yielded a maximum 3.25 times higher rate when compared to using only GO-water nanofluid without any inserts; using nanofluid further enhanced heat transfer by 2.56%, with a small pressure drop of 6.03%.
主页 旧刊 有关人员 未来大会 中文 English Русский Português 帮助 联系我们 返回至ISHMT