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Evaporative characteristics of R134a and R600a in horizontal tubes with perforated strip-type inserts.

Author(s) : HSIEH S. S., JANG K. J., TSAI H. H.

Type of article: Article

Summary

Tests were conducted using a single-tube evaporator test facility. The test section used was 2000 mm long, 10.6 mm inside diameter, horizontal, smooth copper tube with perforated strip-type inserts made from the same material (copper). Test parameters were varied (heat flux, mass velocity, quality) at a saturation temperature of 6 °C. The heat transfer coefficients for R600a were higher than those for R134a. The heat transfer performance and pressure drop can be improved up to 2.5 and 1.5, respectively for a 96 perforated holes enhanced tube.

Details

  • Original title: Evaporative characteristics of R134a and R600a in horizontal tubes with perforated strip-type inserts.
  • Record ID : 2004-0062
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 46 - n. 10
  • Publication date: 2003/05

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