Experimental investigation on heat transfer effect of conical strip inserts in a circular tube under laminar flow

doi:10.1007/s11708-015-0389-z

Frontiers in Energy

2016, Vol. 10

Issue (2): 136-142 https://doi.org/10.1007/s11708-015-0389-z

本期目录

Experimental investigation on heat transfer effect of conical strip inserts in a circular tube under laminar flow

M. ARULPRAKASAJOTHI^1,^*(

),K. ELANGOVAN²,K. HEMA CHANDRA REDDY¹,S. SURESH³

¹. Department of Mechanical Engineering, Jawaharlal Nehru Technological University Anantapur, Anantapur 515002, India
². Department of Mechanical Engineering, Cambridge Institute of Technology, Bangalore 560036, India
³. Department of Mechanical Engineering, National Institute of Technology, Trichy 620015, India

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Abstract：

The aim of this paper is to observe the Nusselt number and friction factor behavior of the circular tube with conical strip inserts as turbulators in a laminar flow condition, using staggered and non-staggered conical strips with three different twist ratios (Y = 2, 3 and 5). The conical strip is inserted in the forward and backward direction individually compared to the flow of water which is the working fluid. The results indicate that the conical strip inserts increases the Nusselt number when compared to the plain surface tube. It is observed that the strip geometry has a major effect on the thermal performance of the circular tube. On examination of different strips for determining the enhancement of Nusselt number, the staggered conical strip with the twist ratio of Y = 3 has given a better result compared to the other two strips. Finally, correlations have been derived using regression analysis for predicting the Nusselt number and friction factor.

Key words： Nusselt number friction factor conical strip

收稿日期: 2015-01-06 出版日期: 2016-05-27

Corresponding Author(s): M. ARULPRAKASAJOTHI

引用本文:

. [J]. Frontiers in Energy, 2016, 10(2): 136-142.
M. ARULPRAKASAJOTHI,K. ELANGOVAN,K. HEMA CHANDRA REDDY,S. SURESH. Experimental investigation on heat transfer effect of conical strip inserts in a circular tube under laminar flow. Front. Energy, 2016, 10(2): 136-142.

链接本文:

https://academic.hep.com.cn/fie/CN/10.1007/s11708-015-0389-z
https://academic.hep.com.cn/fie/CN/Y2016/V10/I2/136

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