Experimental Analysis of Heat Transfer Characteristics and Pressure Drop through Screen Regenerative Heat Exchangers

Abstract

This study investigated the effect on heat transfer and friction characteristics for screen regenerative heat exchangers with the screen thickness reduced by rolling. The experiments were performed on 250 and 325 mesh, 304 stainless steel screen using helium gas. Reynolds numbers, based on hydraulic radius, Re, were between 10 and 100. Both the Colburn factor, StPr(2/ 3), and friction factor, f, decreased as the screen thickness was reduced. A correlation was found for predicting friction factor, f. The drag coefficient per screen remained nearly unchanged for thicknesses reduced not more than 30 percent. The decrease in Colburn factor was significant for Re less than 40. For Re between 40 and 100 the decrease in Colburn factor was less than the experimental uncertainty. Regenerative Cooling, Regenerators, Cryogenic Engines, Screens (Woven Materials), Mesh, Stirling Cycle

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1993
Accession Number
ADA273902

Entities

People

  • Jeffrey L. Wiese

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Air Force
  • Barometric Pressure
  • Data Acquisition
  • Geometry
  • Heat Capacity
  • Heat Exchangers
  • Heat Transfer
  • Heat Transfer Coefficients
  • Measurement
  • Plastic Explosives
  • Pressure Measurement
  • Pressure Transducers
  • Reynolds Number
  • Specific Heat
  • Stainless Steel
  • Thermal Conductivity
  • Time Intervals

Readers

  • Electrical Engineering
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).