Effect of inclination on heat transfer in large flattened-tube steam condensers

William A. Davies, Yu Kang, Pega Hrnjak, Anthony M. Jacobi

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

Abstract

An experimental study of convective steam condensation inside a large, inclined, flattened-tube air-cooled condenser for power plants is presented. This is the second of a two-part study. The first part presents pressure drop and visualization results, while this study presents the experimental method along with heat transfer results. The condenser in this study is steel with brazed aluminum fins. The condenser measures 10.72m in length, with a cross section of 214 mm x 18 mm. The condenser tube was cut in half lengthwise and covered with a polycarbonate viewing window in order to provide visualization access simultaneously with the heat transfer measurements. Inlet steam mass flux ranged from 6.2 - 9.5 kg m-2 s-1, and condenser capacity varied from 25 - 31 kW. The angle of inclination was varied from horizontal to 75o downward. The experiments were performed with a uniform fin-face velocity of crossflowing air at 2.2 m/s. Condenser capacity was found to increase linearly with increasing downward inclination angle of the condenser, at a rate of 0.048% per degree of inclination below horizontal. This improvement was found to be the result of improved drainage and increased void fraction near the condenser outlet.

Original languageEnglish (US)
Title of host publicationEnergy
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791858417
DOIs
StatePublished - Jan 1 2017
EventASME 2017 International Mechanical Engineering Congress and Exposition, IMECE 2017 - Tampa, United States
Duration: Nov 3 2017Nov 9 2017

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
Volume6

Other

OtherASME 2017 International Mechanical Engineering Congress and Exposition, IMECE 2017
CountryUnited States
CityTampa
Period11/3/1711/9/17

Keywords

  • Air-cooled condenser
  • Condensation
  • Flattened tube
  • Heat transfer
  • Inclination

ASJC Scopus subject areas

  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Effect of inclination on heat transfer in large flattened-tube steam condensers'. Together they form a unique fingerprint.

Cite this