Thermal assessment of forced convection through metal foam heat exchangers

Ali Tamayol, K. Hooman

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

Using a thermal resistance approach, forced convection heat transfer through metal foam heat exchangers is studied theoretically. The complex microstructure of metal foams is modeled as a matrix of interconnected solid ligaments forming simple cubic arrays of cylinders. The geometrical parameters are evaluated from existing correlations in the literature with the exception of ligament diameter which is calculated from a compact relationship offered in the present study. The proposed, simple but accurate, thermal resistance model considers: the conduction inside the solid ligaments, the interfacial convection heat transfer, and convection heat transfer to (or from) the solid bounding walls. The present model makes it possible to conduct a parametric study. Based on the generated results, it is observed that the heat transfer rate from the heated plate has a direct relationship with the foam pore per inch (PPI) and solidity. Furthermore, it is noted that increasing the height of the metal foam layer augments the overall heat transfer rate; however, the increment is not linear. Results obtained from the proposed model were successfully compared with experimental data found in the literature for rectangular and tubular metal foam heat exchangers.

Original languageEnglish (US)
Article number111801
JournalJournal of Heat Transfer
Volume133
Issue number11
DOIs
StatePublished - Oct 3 2011

Fingerprint

metal foams
forced convection
Forced convection
heat exchangers
Heat exchangers
Foams
ligaments
Metals
heat transfer
Heat transfer
Ligaments
thermal resistance
Heat resistance
convection
Heat convection
Coordination Complexes
foams
Hot Temperature
porosity
conduction

Keywords

  • forced convection
  • metal foams
  • model development
  • parametric study
  • thermal resistors

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Thermal assessment of forced convection through metal foam heat exchangers. / Tamayol, Ali; Hooman, K.

In: Journal of Heat Transfer, Vol. 133, No. 11, 111801, 03.10.2011.

Research output: Contribution to journalArticle

@article{f210e7ce16dc406ca3fe3f898ff80263,
title = "Thermal assessment of forced convection through metal foam heat exchangers",
abstract = "Using a thermal resistance approach, forced convection heat transfer through metal foam heat exchangers is studied theoretically. The complex microstructure of metal foams is modeled as a matrix of interconnected solid ligaments forming simple cubic arrays of cylinders. The geometrical parameters are evaluated from existing correlations in the literature with the exception of ligament diameter which is calculated from a compact relationship offered in the present study. The proposed, simple but accurate, thermal resistance model considers: the conduction inside the solid ligaments, the interfacial convection heat transfer, and convection heat transfer to (or from) the solid bounding walls. The present model makes it possible to conduct a parametric study. Based on the generated results, it is observed that the heat transfer rate from the heated plate has a direct relationship with the foam pore per inch (PPI) and solidity. Furthermore, it is noted that increasing the height of the metal foam layer augments the overall heat transfer rate; however, the increment is not linear. Results obtained from the proposed model were successfully compared with experimental data found in the literature for rectangular and tubular metal foam heat exchangers.",
keywords = "forced convection, metal foams, model development, parametric study, thermal resistors",
author = "Ali Tamayol and K. Hooman",
year = "2011",
month = "10",
day = "3",
doi = "10.1115/1.4004530",
language = "English (US)",
volume = "133",
journal = "Journal of Heat Transfer",
issn = "0022-1481",
publisher = "American Society of Mechanical Engineers(ASME)",
number = "11",

}

TY - JOUR

T1 - Thermal assessment of forced convection through metal foam heat exchangers

AU - Tamayol, Ali

AU - Hooman, K.

PY - 2011/10/3

Y1 - 2011/10/3

N2 - Using a thermal resistance approach, forced convection heat transfer through metal foam heat exchangers is studied theoretically. The complex microstructure of metal foams is modeled as a matrix of interconnected solid ligaments forming simple cubic arrays of cylinders. The geometrical parameters are evaluated from existing correlations in the literature with the exception of ligament diameter which is calculated from a compact relationship offered in the present study. The proposed, simple but accurate, thermal resistance model considers: the conduction inside the solid ligaments, the interfacial convection heat transfer, and convection heat transfer to (or from) the solid bounding walls. The present model makes it possible to conduct a parametric study. Based on the generated results, it is observed that the heat transfer rate from the heated plate has a direct relationship with the foam pore per inch (PPI) and solidity. Furthermore, it is noted that increasing the height of the metal foam layer augments the overall heat transfer rate; however, the increment is not linear. Results obtained from the proposed model were successfully compared with experimental data found in the literature for rectangular and tubular metal foam heat exchangers.

AB - Using a thermal resistance approach, forced convection heat transfer through metal foam heat exchangers is studied theoretically. The complex microstructure of metal foams is modeled as a matrix of interconnected solid ligaments forming simple cubic arrays of cylinders. The geometrical parameters are evaluated from existing correlations in the literature with the exception of ligament diameter which is calculated from a compact relationship offered in the present study. The proposed, simple but accurate, thermal resistance model considers: the conduction inside the solid ligaments, the interfacial convection heat transfer, and convection heat transfer to (or from) the solid bounding walls. The present model makes it possible to conduct a parametric study. Based on the generated results, it is observed that the heat transfer rate from the heated plate has a direct relationship with the foam pore per inch (PPI) and solidity. Furthermore, it is noted that increasing the height of the metal foam layer augments the overall heat transfer rate; however, the increment is not linear. Results obtained from the proposed model were successfully compared with experimental data found in the literature for rectangular and tubular metal foam heat exchangers.

KW - forced convection

KW - metal foams

KW - model development

KW - parametric study

KW - thermal resistors

UR - http://www.scopus.com/inward/record.url?scp=80053291139&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80053291139&partnerID=8YFLogxK

U2 - 10.1115/1.4004530

DO - 10.1115/1.4004530

M3 - Article

VL - 133

JO - Journal of Heat Transfer

JF - Journal of Heat Transfer

SN - 0022-1481

IS - 11

M1 - 111801

ER -