Submerged Manned Testing of the Prototype Hydrotech Aqua Heat System

O’Connor, Paul; Hyde, Dale; Economos, Demetri; Beck, R.D.

doi:10.21236/ada456821

Cited by 1 publication

(2 citation statements)

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“…3) Post-exposure. Once the exposure phase of the study was complete, the subjects exited the water, were stripped of all dive gear, skin sensors and thermistor, were escorted directly to a heated bath, and were asked to complete a heating pad comfort questionnaire (see O'Connor et al, 2006 for more details).…”

Section: Proceedings Of the Human Factors And Ergonomics Society 52ndmentioning

confidence: 99%

“…However, preliminary work at the U.S. Navy Experimental Diving Unit (NEDU) identified the Hydrotech Aqua Heat System (HAHS) as a system that could be worn under a wet suit, did not restrict freedom of movement, and had a power supply that was not prohibitively large. After preliminary testing of the HAHS (see O'Connor, Hyde, Economos & Beck, 2006 for more details) it was decided that the maximum level of heat that could be provided without risk of burning the wearer was 0.06 W/cm 2 . The study described in this paper is an evaluation of the physiological and cognitive effects of providing 2,477 cm 2 of active heating with a density of 0.06 W/cm 2 to the torso of a diver submerged in cold water.…”

Section: Introductionmentioning

confidence: 99%

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The Cognitive and Physiological Effects of Heating the Torso of a Submerged Diver

O’Connor

Hyde

Clarke

2008

Proceedings of the Human Factors and Ergonomics Society Annual

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Seven U.S. Navy divers were submerged in 7.2 ºC water for a maximum of two hours wearing a semidry suit. In one of the conditions they were provided with external heating, and in the other they were unheated. In the heated condition, a total of 35 W was delivered to each of four heating pad (total area 2,477 cm 2 ) placed on the torso of the divers. Statistical analysis demonstrated that providing heating to the divers afforded no benefits in reducing the effects of cold water exposure on the skin temperature of the body extremities (fingers and toes) or in enhancing manual dexterity, grip strength, or cognitive performance when the effects of such heating were compared to those of the unheated condition. However, the participants reported that they would rather dive with the heating system than without it.

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Section: Proceedings Of the Human Factors And Ergonomics Society 52ndmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%