Low Temperature Energy Recovery Designs

  • John P. Archibald American Solar, Inc.
Keywords: Low Temperature Energy

Abstract

This article discusses low temperature energy recovery systems that are being installed on three Federal buildings in the Washington, DC, area. The three projects discussed use simple systems that deliver low cost heat to buildings in innovative ways. Each uses a source of low temperature heating available from within the building to reduce fossil fuel use. One system recovers heat from the ventilation return air to heat water for the hydronic reheat loop serving variable air volume boxes in the building. The second system recovers heat from an attic space below a plywood roof deck covered with asphalt shingles to heat a domestic hot water loop for a barracks. The third system recovers heat from the solar re-roofing of a building to supply heated air for swimming pool heating and for a heating, ventilating, and air conditioning system. The purpose of this article is to demonstrate the versatility of these low temperature heat recovery systems.

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Author Biography

John P. Archibald, American Solar, Inc.

John Archibald is the President of American Solar, Inc., an Annandale, Virginia, company that uses conventional walls and roofs to heat air using solar energy. He has designed and installed many of the largest solar air heating roofs in North America and designed heat recovery systems using low cost air heating. Email: info@americansolar. com.

References

U.S. Department of Defense, Environmental Security Technology Certification

Program (ESTCP) project EW 201148.

U.S. Department of Defense, Environmental Security Technology Certification

Program (ESTCP) project EW 201512.

Published
2017-09-01
Section
Articles