Webbläsaren som du använder stöds inte av denna webbplats. Alla versioner av Internet Explorer stöds inte längre, av oss eller Microsoft (läs mer här: * https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Var god och använd en modern webbläsare för att ta del av denna webbplats, som t.ex. nyaste versioner av Edge, Chrome, Firefox eller Safari osv.

Experimental and numerical study on heat transfer and pressure drop performance of Cross-Wavy primary surface channel

In English

Författare

  • Ting Ma
  • Lin xiu Du
  • Ning Sun
  • Min Zeng
  • Bengt Sundén
  • Qiu wang Wang

Summary, in English

The Cross-Wavy primary surface heat exchanger is one of the most promising candidates for microturbine recuperators. In this paper, naphthalene sublimation experiments are performed for Cross-Wavy channels in a wind tunnel. The experimental results indicate that the entrance region has a small effect on the unit-averaged heat transfer coefficient of whole Cross-Wavy channels. Correlations of Nusselt number and friction factor in the Cross-Wavy channel are obtained. However, only the Cross-Wavy channel with a large equivalent diameter is tested because the actual Cross-Wavy channels are very complicated and small. Therefore, based on the similarity rules, five Cross-Wavy channels with similar structures but different equivalent diameters are further investigated by numerical simulations. The numerical results indicate that the Cross-Wavy channels with similar structures but different equivalent diameters have similar thermal-hydraulic performance in the studied Reynolds number range.

Avdelning/ar

Publiceringsår

2016-10-01

Språk

Engelska

Sidor

80-90

Publikation/Tidskrift/Serie

Energy Conversion and Management

Volym

125

Dokumenttyp

Artikel i tidskrift

Förlag

Elsevier

Ämne

  • Energy Engineering

Nyckelord

  • Cross-Wavy channel
  • Heat transfer
  • Naphthalene sublimation technique
  • Pressure drop
  • Similarity

Aktiv

Published

ISBN/ISSN/Övrigt

  • ISSN: 0196-8904