Experimental investigation of heat transfer and friction coefficient of the water/graphene oxide nanofluid in a pipe containing twisted tape inserts under air cross-flow

被引：30

作者：

Ranjbarzadeh, R. ^{[1
,2
]}

Isfahani, A. H. Meghdadi ^{[1
,2
]}

Hojaji, M. ^{[1
,2
]}

机构：

[1] Islamic Azad Univ, Najafabad Branch, Dept Mech Engn, Najafabad, Iran

[2] Islamic Azad Univ, Najafabad Branch, Modern Mfg Technol Res Ctr, Najafabad, Iran

来源：

EXPERIMENTAL HEAT TRANSFER | 2018年 / 31卷 / 05期

关键词：

mean Nusselt number; water-graphene oxide nanofluid; friction coefficient; wind tunnel; GRAPHENE NANOPLATELETS NANOFLUIDS; CAM SHAPED TUBE; FORCED-CONVECTION; THERMAL-CONDUCTIVITY; TRANSFER ENHANCEMENT; PERFORMANCE; STABILITY; EXCHANGER;

D O I：

10.1080/08916152.2018.1431736

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The water/graphene oxide nanofluid effect in a pipe equipped by twisted tape inserts under air cross-flow is investigated and the optimal tape geometry is determined. The range of internal and external Reynolds numbers are: 3800<Re-o<21500 and 550<Re-i<2000. Heat transfer and pressure drop increase by increasing Re and inserts width and heat transfer performance coefficient increased up to 1.4, indicating enhanced heat transfer compared to undesirable pressure drop. On the other hand, the heat transfer coefficient is 26% higher when compared with water in a plain tube. According to the results, this method is a good alternative in heat exchangers.

引用

页码：373 / 390

页数：18

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