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NEW MODELS AND METHODOLOGY FOR PREDICTING THERMAL CONTACT RESISTANCE IN COMPOUND CYLINDERS AND FINNED TUBES.

Author(s) : LEMCZYK T. F., YOVANOVICH M. M.

Type of article: Article

Summary

NEW THERMAL CONDUCTANCE CORRELATIONS UTILIZE MODELS INVOLVING MEASURED SURFACE PARAMETERS, MATERIAL HARDNESS, THERMOPHYSICAL PROPERTIES, AND ITERATIVELY EVALUATED CONTACT STRESSES. THE PREDICTIONS OF PREVIOUS AND PROPOSED MODELS ARE COMPARED TO PUBLISHED EXPERIMENTAL INVESTIGATIONS ON COMPOUND CYLINDERS. ACCURACY TO WITHIN 5% OF EXPERIMENTAL DATA IS OBTAINED BY MEANS OF THE PROPOSED MODELS. THE ALTERNATIVE MODELS GROSSLY OVERESTIMATED THE THERMAL CONTACT RESISTANCE IN COMPOUND CYLINDERS, WITH ERROR RANGES FROM 25 TO 200%. THE EXPERIMENTAL VERIFICATIONS THEREBY SUPPORT THE NEW MODELS IN THE ANALYSIS OF COMPOUND CYLINDERS, WITH DIRECT APPLICATIONS IN ANALYZING THE PERFORMANCE OF FINNED-TUBE HEAT EXCHANGERS.

Details

  • Original title: NEW MODELS AND METHODOLOGY FOR PREDICTING THERMAL CONTACT RESISTANCE IN COMPOUND CYLINDERS AND FINNED TUBES.
  • Record ID : 1988-1383
  • Languages: English
  • Source: Heat Transf. Eng. - vol. 8 - n. 2
  • Publication date: 1987
  • Document available for consultation in the library of the IIR headquarters only.

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