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A general criterion for evaporative heat transfer in micro/mini-channels

In English

Författare

  • Wei Li
  • Zan Wu

Summary, in English

This paper presents a general criterion to classify a channel as micro-channel or macro-channel. Experimental results of saturated-flow boiling heat transfer in micro/mini-channels for both multi- and single-channel configurations were obtained from the literature. The collected database contains 4228 data points, covering a wide range of working fluids, operational conditions, and different micro-channel dimensions. Seven existing correlations were evaluated against the database to verify their respective accuracies. A combined non-dimensional number Bo * Rel0.5 = 200 was introduced as the new conventional-to-micro/mini-channel criterion. In addition, a generalized prediction method was proposed based on the new criterion, with accurate predictive capability.

Publiceringsår

2010

Språk

Engelska

Sidor

1967-1976

Publikation/Tidskrift/Serie

International Journal of Heat and Mass Transfer

Volym

53

Issue

9

Dokumenttyp

Artikel i tidskrift

Förlag

Pergamon Press Ltd.

Ämne

  • Energy Engineering

Status

Published

Forskningsgrupp

  • heat transfer

ISBN/ISSN/Övrigt

  • ISSN: 0017-9310