Condensation Heat Transfer on Spirally Finned Tubes in Actual Flue Gas

• Osakabe Masahiro

  東京商船大学

• Itoh Tsugue

  東京商船大学

• Ohmasa Kunimitu

  川重冷熱工業株式会社

Bibliographic Information

Other Title

• 実排ガスにおけるフィン付き伝熱管の凝縮熱伝達
• ジツ ハイガス ニ オケル フィン ツキ デンネツカン ノ ギョウシュク ネツ デンタツ

Abstract

In order to improve the boiler efficiency, latent heat recovery from the flue gas is very important concept. Condensation heat transfer on horizontal spirally finned tubes was investigated experimentally by using an actual flue gas from a natural gas boiler. The experiments were conducted at different steam mass concentrations of the flue gas and a wide range of tube wall temperature. The mass concentration was controlled with a steam injection into the flue gas. Fin efficiency at the condensation region was significantly lower than that at the dry region. The empirical correlation developed for a single-phase fluid was extrapolated to the condensation heat transfer region. The fin efficiency was evaluated with an equivalent heat transfer coefficient used as a first approximation. The heat and mass transfer behaviors on the spirally finned tubes were well predicted with the analogy correlation based on the empirical correlation.

Journal

• JOURNAL OF THE MARINE ENGINEERING SOCIETY IN JAPAN

  JOURNAL OF THE MARINE ENGINEERING SOCIETY IN JAPAN 35 (4), 260-267, 2000

  The Japan Institute of Marine Engineering

Details

• CRID: 1390001205160483072
• NII Article ID: 10004731527
• NII Book ID: AN00196373
• DOI: 10.5988/jime1966.35.260
• ISSN: 18844758
• ISSN: 03883051
• NDL BIB ID: 5330948
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I5330948
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed