Accession Number : AD0727606

Title :   Development of a Heater-Pump to Protect a Diver in Cold Water.

Descriptive Note : Medical research interim rept.,

Corporate Author : NAVAL MEDICAL RESEARCH INST BETHESDA MD

Personal Author(s) : Eicher,Maynard ; Connor,Thomas J. ; Wiseman,Oscar M. ; Leto,Frank C. , Jr. ; Tauber,John F.

Report Date : 23 APR 1971

Pagination or Media Count : 22

Abstract : In an effort to provide a means of keeping a diver warm in a cold environment for a useful period of time, a series of five heater-pumps was progressively developed. They circulated heated water through a Welson tubing suit, worn under a neoprene wet suit. In each unit the hot water was produced in a boiler with a 750 watt electric immersion heater and pumped in a closed system through the suit. With efficiencies of about 85 percent, diver comfort was maintained in a 4 degrees C water. The heater-pumps were designed to operate on 24 volts at a depth of 600 feet. They were diver tested in an open tank and with simulated loads, recording temperatures and flow rates. The results with these prototype units indicated the feasibility of a low-cost, successful, heater pump for either battery or for umbilical cable operation. (Author)

Descriptors :   (*HEATERS, *UNDERWATER CLOTHING), PUMPS, HEATING

Subject Categories : Air Condition, Heating, Lighting & Ventilating
      Protective Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE