Energy reducing retrofit method and apparatus for a constant volume HVAC system

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United States of America Patent

PATENT NO 8965586
SERIAL NO

13920331

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Abstract

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An energy-reducing method and apparatus for retrofitting a constant volume HVAC system, with or without an economizer, that provides heating, cooling, and ventilation to occupants within a building space. The present invention includes the introduction of a programmable logic controller and variable frequency drive (VFD) that takes control of the existing fan, heating, cooling, and optional economizer operation. The controller is programmed fault detection of fan fault, heat/cool (temperature-based) fault, and energy consumption fault. The reduction of the fan speed in the ventilation mode when the 100% operation is not needed saves significant energy of the existing constant volume HVAC system where the fan motor is designed to run 100% of the time.

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Patent Owner(s)

  • TRANSFORMATIVE WAVE TECHNOLOGIES LLC

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Miller, Danny Renton, US 8 92
Sipe, Justin Federal Way, US 7 87

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