Heat Transfer Enhancement in Round Tube Using Wire Coil. Influence of Clearance between Inner Wall and Wire Coil.

• SHOJI YUKITSUGU

  Mechanical Engineering, Tohokugakuin University

• SATO KYOZO

  Mechanical Engineering, Tohokugakuin University

• OLIVER D. R.

  Chemical Engineering, University of Birmingham, Birmingham, U. K.

Bibliographic Information

Other Title

• ワイヤーコイルを用いた円管内熱伝達の促進　　管内壁とワイヤーコイルとの隙間の影響
• ワイヤーコイル オ モチイタ エンカン ナイ ネツ デンタツ ノ ソクシン
• Influence of Clearance between Inner Wall and Wire Coil
• 管内壁とワイヤーコイルとの隙間の影響

Abstract

Experiments were performed to study heat transfer enhancement in a round tube using wire coils as turbulators. The present study investigates the effect of the clearance between the inner wall of the tube and the wire coil (ε/D_i = 0.007, 0.05, 0.15, 0.21 and 0.30). The wire coils were made from 1.50 mm diameter copper wire. The test fluid was water. Both heat transfer and pressure drop are measured, and were compared with data for empty tube case.<BR>As a result, the heat transfer and the pressure drop decrease with the increasing clearance. A heat transfer correlation is given as Nu_H = {0.231-0.456 (ε/D_i)} · Re_H^0.64· Pr¹³.

Journal

• KAGAKU KOGAKU RONBUNSHU

  KAGAKU KOGAKU RONBUNSHU 24 (4), 568-572, 1998

  The Society of Chemical Engineers, Japan

Keywords

• heat transfer enhancement
• turbulator
• wire coil
• clearance
• heat exchanger

Details

• CRID: 1390001204509774592
• NII Article ID: 10002835651
• NII Book ID: AN00037234
• DOI: 10.1252/kakoronbunshu.24.568
• ISSN: 13499203
• ISSN: 0386216X
• NDL BIB ID: 4507327
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4507327
• Web Site: http://www.jstage.jst.go.jp/article/kakoronbunshu1975/24/4/24_4_568/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed