Electric finned-tube baseboard space heater employing a vaporized working fluid
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United States of America Patent
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-
Dec 13, 1988
Grant Date -
N/A
app pub date -
Mar 4, 1987
filing date -
Mar 4, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electrically-powered space heater has a boiler connected to supply a vaporized working fluid consisting of a 2 to 1 mixture of ethylene glycol and water to a slightly upwardly inclined, closed-end, finned-tube heater exchanger at a pressure of between -5 p.s.i. and 15 p.s.i. and at a temperature of between approximately 190.degree. F. and 250.degree. F. The combined internal volume of the boiler and heat exchanger is between about seventeen and twenty cubic inches with the boiler having an internal volume of about sixteen cubic inches and sized to be at least four times the internal volume of the heat exchanger. The heat exchanger has a length of between one and eight feet and the boiler is heated by an electric resistance heating means having a wattage of between 300 and 1200 watts, with the wattage increasing at a rate of approximately 150 watts per half cubic inch increase in internal system volume in the internal volume range set forth above.
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