Numerical and experimental studies of flow field and heat transfer for high temperature exhaust gas over in-line tube banks

Cheng En Liu, Jiin Yuh Jang, Ta Sung Huang, Pai Hsiang Wang, Chun Da Chen

Research output: Contribution to conferencePaperpeer-review

Abstract

Flow field and thermal-hydraulic characteristics for outside tubes of a recuperator were studied numerically and experimentally. Calculations are carried out for an in-line tube bank up to four rows deep under the conditions of uniform tube wall temperature. Fluid flow is incompressible, two-dimensional and turbulent. The radiation effect was considered between the tube wall and the working fluid for evaluating the outside performance. Because of high emissivity which the tube wall and exhaust gas had, radiant heat transfer was not negligible in this study. Streamline, isothermal lines through the whole tube bank, local and average Nusselt numbers, and friction factor are presented. The numerical results of Nusselt numbers show that the radiant heat transfer can run up to about 28% of the whole heat transfer. The numerical result is in good agreement with the experimental data within 5%.

Original languageEnglish
Publication statusPublished - 2007
Event9th Asia Pacific Conference on the Built Environment 2007: "Sustainable HVAC and R Technology" - Bangkok, Thailand
Duration: 2007 Nov 222007 Nov 23

Other

Other9th Asia Pacific Conference on the Built Environment 2007: "Sustainable HVAC and R Technology"
CountryThailand
CityBangkok
Period07-11-2207-11-23

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment

Fingerprint Dive into the research topics of 'Numerical and experimental studies of flow field and heat transfer for high temperature exhaust gas over in-line tube banks'. Together they form a unique fingerprint.

Cite this