Multi-mission rebreather cooling system
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United States of America Patent
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Apr 24, 2018
Issued Date -
N/A
app pub date -
Sep 26, 2014
filing date -
Nov 29, 2010
priority date (Note) -
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Abstract
An apparatus includes a scrubber bed, a cooling unit operatively connected to the scrubber bed, and a frame configured for a user to carry the apparatus. The cooling unit includes a compressor, a condensing coil operatively connecting the compressor to an expansion valve, and an evaporating coil operatively connecting the expansion valve to the compressor, and a first fluid circulating through the compressor, the condensing coil, the expansion valve, and the evaporating coil. A method of cooling a gas in a rebreather apparatus includes scrubbing an exhalation gas to produce a recycled gas having a lower concentration of carbon dioxide than the exhalation gas, compressing, condensing, expanding, and evaporating a refrigerant in a closed-loop system, transferring heat energy from the recycled gas to the refrigerant, and metering a cooled gas to the user.
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