Experimental Determination of Heat Requirements for the MARK I PTC.

Abstract

The purpose of the test program was to establish the amount of heat required to maintain the interior of the Mark I PTC at a comfortable level for divers. The test showed that for a condition of moderate forced convection at 810 feet equivalent internal pressure, a heat input of 1620 B/hr (0.48 kw) is required for each degree of temperature differential that is to be maintained between the interior of the PTC and the outside seawater. Thus, if an interior temperature of 90 F is desired in 40 F water, this would require a total heat input of 81,000 B/hr (24 kw). These results are valid only for a condition of forced convection similar to the test situation. Although the heat requirement seems quite high, it is only equivalent to the air-conditioning load in a modern automobile.

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Document Details

Document Type
Technical Report
Publication Date
Sep 08, 1969
Accession Number
ADA076186

Entities

People

  • J. S. Glasgow
  • P. S. Riegel

Organizations

  • Battelle Memorial Institute

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Conditioning
  • Convection
  • Corporations
  • Divers
  • Engineering
  • Environment
  • Heat Loss
  • Heat Transfer
  • High Temperature
  • Hyperbaric Chambers
  • Instrumentation
  • Internal Pressure
  • Losses
  • Power Supplies
  • Prandtl Number
  • Steady State
  • Thermometers

Readers

  • Electrical Engineering
  • Materials Science