scispace - formally typeset
Open AccessJournal ArticleDOI

Optimum spacing between grooved tubes: An experimental study

Reads0
Chats0
TLDR
An experimental study on optimum spacing between grooved tubes is reported in this paper, where the optimum spacing was decided based on Nusselt number (Nu) and the authors found that there exists a limiting spacing (optimum) between the tubes above which no change in Nu was observed.
Abstract
An experimental study on optimum spacing between grooved tubes is reported in this paper. Two grooved tubes having pitch of 10 mm and 15 mm and a plain tube were considered for the heat transfer analysis. The spacing between two tubes with same pitch was varied from 10 mm to 35 mm with a step size of 5 mm. Velocity of air flowing over the tube surfaces was changed from 0.4 m/s to 1 m/s using a blower fan. Based on Nusselt number (Nu) the optimum spacing between the tubes was decided. The optimum spacing between grooved tubes of pitch 10 mm and 15 mm was compared with that of plain tubes. From the experimental analysis it was noticed that with increase in air velocity (increase in Reynolds number) the tube surface temperature reduced irrespective of any tube considered. Nu increased with increase in air velocity for all the tubes. The important conclusion drawn from the present study was that, there exists a limiting spacing (optimum) between the tubes above which no change in Nu was observed. Spacing of 30 mm was found to be the optimum spacing between the tubes irrespective of its surface geometry modifications.

read more

Content maybe subject to copyright    Report

Document details
1 of 1
Optimum spacing between grooved tubes : An experimental study
(Article)
, , , ,
Department of Mechanical Engineering, P. A. College of Engineering, Visvesvaraya Technological University,
Mangaluru, India
Department of Mechanical Engineering, N. K. Orchid College of Engineering, Solapur, India
Department of Mechanical Engineering, International Islamic University Malaysia, Kuala Lumpur, Malaysia
Abstract
An experimental study on optimum spacing between grooved tubes is reported in this paper. Two grooved tubes
having pitch of 10 mm and 15 mm and a plain tube were considered for the heat transfer analysis. The spacing
between two tubes with same pitch was varied from 10 mm to 35 mm with a step size of 5 mm. Velocity of air flowing
over the tube surfaces was changed from 0.4 m/s to 1 m/s using a blower fan. Based on Nusselt number (Nu) the
optimum spacing between the tubes was decided. The optimum spacing between grooved tubes of pitch 10 mm and
15 mm was compared with that of plain tubes. From the experimental analysis it was noticed that with increase in air
velocity (increase in Reynolds number) the tube surface temperature reduced irrespective of any tube considered. Nu
increased with increase in air velocity for all the tubes. The important conclusion drawn from the present study was
that, there exists a limiting spacing (optimum) between the tubes above which no change in Nu was observed. Spacing
of 30 mm was found to be the optimum spacing between the tubes irrespective of its surface geometry modifications.
© 2020, The Korean Society of Mechanical Engineers and Springer-Verlag GmbH Germany, part of Springer Nature.
SciVal Topic Prominence
Topic:
Prominence percentile: 95.947
Author keywords
Grooved tubes Grooves Heat transfer Nusselt number Optimum spacing
Indexed keywords
Engineering
controlled terms:
Air Heat transfer Nusselt number Reynolds equation Reynolds number
Engineering
uncontrolled terms
Air velocities Experimental analysis Grooved tubes Grooves Heat transfer analysis
Optimum spacing Surface geometries Surface temperatures
Back to results
Export
Download
Print
E-mail
Save to PDF
Add to List
More...
View at Publisher
Journal of Mechanical Science and Technology
Volume 34, Issue 1, 1 January 2020, Pages 469-475
Afzal, A.
a
Mohammed Samee, A.D.
b
Abdul Razak, R.K.
a
Khan, S.A.
c
Khan, H.
d
a
b
c

View additional affiliations

View references (35)
Condensation | Heat transfer coefficients | Flow condensation
PlumX Metrics
Usage, Captures, Mentions,
Social Media and Citations
beyond Scopus.
Metrics
Cited by 0 documents
Inform me when this document
is cited in Scopus:
Related documents
, ,
(2016) ASME International
Mechanical Engineering
Congress and Exposition,
Proceedings (IMECE)
, ,
(2015) International Journal of
Heat and Mass Transfer
, ,
(2017) Applied Thermal
Engineering
Find more related documents in
Scopus based on:
View all metrics

Set citation alert
Set citation feed
Investigation of heat transfer and
fluid flow over pocket cavity in
the rear part of gas turbine
Liu, J. Wang, C. Wang, L.
Turbulent flow and heat transfer
enhancement in rectangular
channels with novel cylindrical
grooves
Liu, J. Xie, G. Simon, T.W.
Heat transfer and turbulent flow
characteristics over pocket cavity
in the junction part of an outlet
guide vane in a gas turbine
Liu, J. Hussain, S. Wang, L.
View all related documents based
on references
Brought to you by INTERNATIONAL ISLAMIC UNIVERSITY MALAYSIA
Search Sources Lists
SciVal
Create account Sign in

References (35)
Engineering main
heading:
Tubes (components)
Chang, T.-H.,Lee, K.-S.,Chang, K.-W.,Kim, S.M.,Lee, C.-H.
(2019)
Journal of Mechanical Science and Technology
,33(8),pp. 3613-3620.
doi: 10.1007/s12206-019-0701-7
Arani, A.A.A.,Kazemi, M.
Analysis of fluid flow and heat transfer of nanofluid inside triangular enclosure equipped with rotational
obstacle
(2019)
Journal of Mechanical Science and Technology
,pp. 1-13.
Ali, M.S.,Sharma, N.,Tariq, A.
(2019)
Journal of Mechanical Science and Technology
,33(10),pp. 5017-5023.
doi: 10.1007/s12206-019-0940-7
Afzal, A.,Samee, A.D.M.,Razak, R.K.A.
Experimental thermal investigation of CuO-W nanofluid in circular minichannel
(2017)
Modelling Measurement and Control B
,86(2),pp. 335-344. .
Darzi, A.A.R.,Farhadi, M.,Sedighi, K.,Shafaghat, R.,Zabihi, K.
(2012)
International Communications in Heat and Mass Transfer
,39(9),pp. 1425-1434. .
doi: 10.1016/j.icheatmasstransfer.2012.07.027
ISSN: 1738494X
Source Type: Journal
Original language: English
DOI: 10.1007/s12206-019-1244-7
Document Type: Article
Publisher: Korean Society of Mechanical Engineers
View in search results format
All Export
Print
E-mail
Save to PDF Create bibliography
1
Heat transfer characteristics of a short helical plate in a horizontal circular tube
http://www.springerlink.com/content/1738-494X
View at Publisher
2
3
Heat transfer and flow field features between surface mounted trapezoidal-ribs
http://www.springerlink.com/content/1738-494X
View at Publisher
4
Cited 12 times
5
Experimental investigation of turbulent heat transfer and flow characteristics of SiO
/water nanofluid within helically corrugated tubes
2
Cited 54 times
View at Publisher
Authors
Keywords
Citations
More filters
Journal ArticleDOI

A review on convective heat transfer enhancement using ultrasound

TL;DR: In this article , the authors summarized some of the applications of ultrasound interference in free and forced convection heat transfer systems, focusing more on those published in the last decade, and showed that ultrasound has shown a positive effect on increasing the efficiency by enhancing forced convective heat transfer itself and reducing fouling.
Journal ArticleDOI

Machinability studies on boron carbide and graphite reinforced aluminium hybrid composites

TL;DR: In this article, the effect of machining parameters on the thrust force, torque and burr height while drilling Al 2618, Al2618 with 10% boron carbide (B4C) and 5% graphite (Gr) hybrid composites is addressed.
Journal ArticleDOI

Study on effect of ceramics on dry sliding wear behaviour of Al-Cu-Mg based metal matrix composite at different temperature

TL;DR: In this paper, the effects of ceramics on Al2219 versus un-reinforced Al 2219 alloy were explored and an Artificial Neural Network (ANN) predictive outcome fit to actual measured data and absolute relative error was used to predict the wear properties of the composite.
Journal ArticleDOI

Numerical analysis of rectangular fins with circular perforations

TL;DR: In this paper, the authors used ANSYS fluent code to estimate the temperature reduction across a number of circular perforations and found that there was an appreciable temperature drop and an enhancement of heat transfer using circular perfations.
Journal ArticleDOI

Transient Heat Transfer Analysis Of Dimpled Rod

TL;DR: In this paper, the authors studied the transient properties of a dimpled specimen and determined their influence on heat transfer, and found that the ellipsoidal shape offers better results than other shapes because of prior vortex development.
References
More filters
Journal ArticleDOI

The investigation of groove geometry effect on heat transfer for internally grooved tubes

TL;DR: In this paper, an experimental study of surface heat transfer and friction characteristics of a fully developed turbulent air flow in different grooved tubes is reported Tests were performed for Reynolds number range 10,000-38,000 and for different geometric groove shapes (circular, trapezoidal and rectangular) The ratio of tube length-to-diameter is 33 Among the cylinders, heat transfer enhancement is obtained up to 63% for circular groove, 58% for trapezoid groove, and 47% for rectangular groove, in comparison with the smooth tube at the highest Reynolds number (Re
Journal ArticleDOI

Numerical study on heat transfer of turbulent channel flow over periodic grooves

TL;DR: In this article, a numerical investigation of turbulent forced convection in a two-dimensional channel with periodic transverse grooves on the lower channel wall is conducted, where the lower wall is subjected to a uniform heat flux condition while the upper wall is insulated.
Journal ArticleDOI

Condensation heat transfer and pressure drop of HFC-134a in a helically coiled concentric tube-in-tube heat exchanger

TL;DR: In this article, the two-phase heat transfer coefficient and pressure drop of HFC-134a during evaporation inside a smooth helically coiled concentric tube-in-tube heat exchanger are experimentally investigated.
Journal ArticleDOI

Heat transfer enhancement in mini-channel heat sinks with dimples and cylindrical grooves

TL;DR: In this paper, a convective cooling heat transfer in mini-channels with dimples, cylindrical grooves and low fins is numerically studied by using the field synergy principle.
Journal ArticleDOI

The effects of corrugation pitch on the condensation heat transfer coefficient and pressure drop of R-134a inside horizontal corrugated tube

TL;DR: In this article, the heat transfer coefficient and pressure drop of R-134a inside a horizontal smooth tube and corrugated tubes are experimentally investigated inside a 2.0-m long counter-flow concentric double tube heat exchanger with refrigerant flowing in the inner tube and cooling water flowing in an annulus.
Related Papers (5)
Frequently Asked Questions (1)
Q1. What have the authors contributed in "Optimum spacing between grooved tubes : an experimental study" ?

An experimental study on optimum spacing between grooved tubes is reported in this paper. The important conclusion drawn from the present study was that, there exists a limiting spacing ( optimum ) between the tubes above which no change in Nu was observed.