Other

William W Sawyer

Dieter L Rall

David R Hornbaker

A control apparatus for regulating a building perimeter temperature change system, which may be a heating system, a cooling system, or both. The control apparatus operates in conjunction with a central heating system which operates to adjust temperatures in the building. The building is characterized by net heat gains or losses at the building perimeter. These net heat gains and losses are made up by the building perimeter temperature change system under the regulation of the present control apparatus. The apparatus includes a heat flow sensor for mounting upon an exterior building element to generate a sensor signal proportional to the direction and magnitude of heat flow to or from the building element. A controller responsive to the sensor signal operates the temperature change system so that the rate of perimeter heating or cooling is directly proportional to the measured rate of heat loss or gain through the building element.

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Lake Forest, IL, United States of America

William W Sawyer