Refrigerant charge slide calculator
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United States of America Patent
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Nov 25, 2014
Issued Date -
N/A
app pub date -
Mar 5, 2013
filing date -
Mar 5, 2012
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Abstract
A refrigerant slide calculator for determining proper refrigerant charge displays on a single side representations for performance characteristics, measured temperatures and pressures for more than one refrigerant, preferably both R22 and R410a. The slide calculator has an operator a sleeve, with the operator being a card which slidably fits within the sleeve. The operator has superheat data areas and subcooling data areas. The sleeve has different portions defined as a superheat region and a subcooling region, with windows matching the various measured wet bulb and dry bulb temperatures. In the superheat region, vapor pressure windows are provided which correspond to the different refrigerants, and a singular required vapor line temperature is displayed corresponding required superheat. In the subcooling region, a required liquid line temperature window and required subcooling data field are provided along with a liquid pressure window representing two different refrigerants.
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