Household appliance containing a heat transfer fluid
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United States of America Patent
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Jan 22, 2013
Grant Date -
Aug 26, 2010
app pub date -
Oct 10, 2008
filing date -
Oct 25, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A household appliance includes a drying chamber, a process air loop and a heat pump. The heat pump includes a heat transfer loop containing a heat transfer fluid, an evaporator heat exchanger, a liquefier heat exchanger, a compressor, and a nozzle. The heat transfer fluid has a critical temperature above 60° C., a nominal heat of vaporization at boiling point of at least 220 kJ/kg, a GWP index of less than 150 and a lower flammability level of at least 0.1 kg/m3. Preferably, the household appliance is a dryer for drying wet laundry.
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