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Heater control device and method to save energy

  • US 6,293,471 B1
  • Filed: 04/27/2000
  • Issued: 09/25/2001
  • Est. Priority Date: 04/27/2000
  • Status: Expired due to Fees
First Claim
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1. A control system for controlling a hot water heater to effect energy savings comprising first sensing means for sensing over an extended period of time the exit pipe flow of a hot water heater, second sensing means for sensing over an extended period of time the tank temperature of a hot water heater, a processor including(a) first circuit means for establishing a hot water usage profile of the exit pipe flow defined by periods of water use and periods of water non-use, (b) second circuit means utilizing the hot water usage profile for predicting at least one of future hot water non-usage and hot water usage through future use/non-use algorithm circuitry, and (c) third circuit means for utilizing the predicted future hot water usage to control a heater of the hot water heater to effect energy savings.

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