Heat transfer performance for a falling-film on horizontal flat tubes

Xiaofei Wang, Predrag Stojan Hrnjak, Stefan Elbel, Anthony M Jacobi, M. G. He

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Local and average heat transfer behavior for a falling film on horizontal flat tubes is explored through an experimental approach in this work. Experiments are conducted using water (18 C) under different heat fluxes and tube spacings, with a range of flow rates that covers all flow modes. It is found that the local heat transfer coefficient decreases with distance from the top of the tube and is almost constant along the axial direction. Heat flux and tube spacing have almost no effect on average heat transfer performance within the experimental range. The average Nusselt number for the flat tube is close to that for round tube in a droplet flow mode, but it is almost twice as large as the round-tube result in the jet mode and sheet modes.

Original languageEnglish (US)
Title of host publicationHeat and Mass Transport Processes
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages43-50
Number of pages8
EditionPARTS A AND B
ISBN (Print)9780791854969
DOIs
StatePublished - 2011
EventASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011 - Denver, CO, United States
Duration: Nov 11 2011Nov 17 2011

Publication series

NameASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011
NumberPARTS A AND B
Volume10

Other

OtherASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011
Country/TerritoryUnited States
CityDenver, CO
Period11/11/1111/17/11

ASJC Scopus subject areas

  • Mechanical Engineering

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