Loughborough University
Leicestershire, UK
LE11 3TU
+44 (0)1509 263171
Loughborough University

Loughborough University Institutional Repository

Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/13960

Title: Different aspects of geometrical optimization for compact heat exchangers
Authors: Rahmani, Ramin
Mirzaee, Iraj
Ramezanpour, Ahad
Shirvani, Hassan
Keywords: Crossflow
Laminar
Staggered
Tube bundle
Efficiency
Performance
Issue Date: 2007
Publisher: © WSEAS
Citation: RAHMANI, R. ... et al, 2007. Different aspects of geometrical optimization for compact heat exchangers. WSEAS Transactions on Applied and Theoretical Mechanics, 2 (1), pp.7-15.
Abstract: In this study a two dimensional, steady state and incompressible laminar flow for staggered tube arrays in crossflow is investigated numerically. The study is based on a patented (APU, UK May 2001) compact heat exchanger design using implanted vortex generators on the internal flow, and change of fluid momentum in a turbulent jet on the external flow side. A finite-volume method is used to discretize and solve the governing equations for the geometries expressed by a boundary-fitted coordinate system. Solutions for the Reynolds numbers from 20 to 200 are obtained for a tube bundle with 10 longitudinal rows in different tube arrangements of ES, ET, and RS each with nominal pitch-to-diameter ratios of 1.33, 1.60 and 2.00. Different performance parameters which are used commonly to compare different heat exchangers are investigated and the performance parameters which account for pressure losses as well as occupied area are defined. The variations of these parameters with inlet Reynolds number and different nominal pitch-to-diameter ratios for different tube arrangements are also indicated. The optimum tube layouts for the studied flow and geometry ranges are shown as well.
Version: Accepted for publication
URI: https://dspace.lboro.ac.uk/2134/13960
Publisher Link: www.worldses.org/journals/mechanics/
ISSN: 1991-8747
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

Files associated with this item:

File Description SizeFormat
Rahmani_et_al_WSEAS2007.pdfAccepted version316.57 kBAdobe PDFView/Open
CoverforPDF.pdfCover sheet27.64 kBAdobe PDFView/Open

 

SFX Query

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.