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Experimental investigation on downward flow boiling heat transfer characteristics of propane in shell side of LNG spiral wound heat exchanger.

Author(s) : DING C., HU H., DING G., et al.

Type of article: Article, IJR article

Summary

For designing LNG spiral wound heat exchangers (SWHE), the boiling heat transfer mechanism of two-phase hydrocarbon refrigerant flowing downward in shell side should be known. In this study, an explosion-proof experimental rig was established for measuring heat transfer coefficients (HTC) and observing flow patterns. The test section contains three-layer tube bundles to emulate the actual structure and flow conditions of an SWHE. Propane as one main component of shell-side refrigerant is used as the tested fluid. The experimental conditions cover heat fluxes of 4~10?kW·m-2, mass fluxes of 40~80?kg (m2·s)-1 and vapor qualities of 0.2~1.0. The results indicate that HTC initially increases and then decreases with the increment of vapor quality, representing a maximum at a vapor quality of 0.8~0.9; the effect of heat flux on HTC increases with the increment of heat flux. A correlation of HTC was developed covering 98% of the experimental data within a deviation of ±20%.

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Pages: 13-25

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Details

  • Original title: Experimental investigation on downward flow boiling heat transfer characteristics of propane in shell side of LNG spiral wound heat exchanger.
  • Record ID : 30022518
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 84
  • Publication date: 2017/12
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2017.08.006

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