Heat exchange – With valve or movable deflector for heat exchange fluid flow – With by-pass of heat exchanger or heat exchanger section
Patent
1978-02-23
1979-08-14
Wayner, William E.
Heat exchange
With valve or movable deflector for heat exchange fluid flow
With by-pass of heat exchanger or heat exchanger section
62 78, 165 16, 128191A, F24F 1102
Patent
active
041641728
ABSTRACT:
Method and apparatus for controlling the amount of outside air introduced into a given space being ventilated as a function of the oxygen content of the air in the space to minimize the energy expended in heating or cooling air flowing through the space while maintaining the oxygen content of the air above that required for the well-being of humans occupying said space. A fuel cell produces an electric current the magnitude of which is a function of the partial pressure of the oxygen present in the air surrounding the fuel cell. The output of the fuel cell is applied to a control circuit which applies control signals to the motor control circuit of a damper motor to admit outside air when the partial pressure of the oxygen in the occupied space falls to a predetermined minimum level and to exclude outside air and to recirculate return air when the partial pressure of the oxygen in the space rises to a certain maximum level.
REFERENCES:
patent: 2984082 (1961-05-01), Coblentz
patent: 3587438 (1971-06-01), Foster
patent: 3593711 (1971-07-01), Staub, Jr. et al.
Anderten John R.
Peter Glen O.
Energy Controls, Inc.
Wayner William E.
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