Liquid heaters and vaporizers – Subsidiary
Patent
1981-11-27
1984-02-07
Favors, Edward G.
Liquid heaters and vaporizers
Subsidiary
165DIG2, 431215, F22B 3300
Patent
active
044296614
ABSTRACT:
A flue gas heat recovery apparatus for reconstituting thermal energy normally lost through the venting of flue gases from a heat liberating plant is disclosed. The apparatus can be employed with forced air or hydronic systems and includes a compressor which draws hot gases from the exhaust flue through a first heat exchanger located in a cold fluid return to the plant, thereby transferring thermal energy from the gases to fluid (typically air or water) flowing in the return duct. The compressor operates to substantially elevate the pressure and temperature of the flue gases passing therethrough and discharges them through a second heat exchanger located in the return duct upstream of the first heat exchanger to further transfer thermal energy from the gases to the fluid flowing therein. Gases exiting the second heat exchanger are directly vented to the atmosphere or, alternatively, are first filtered to remove particulate matter. Additionally, the compressor can be disposed within the return duct to provide still more transfer of thermal energy to the return duct fluid.
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Favors Edward G.
VanOphem Remy J.
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