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System and method for estimating and indicating temperature characteristics of temperature controlled liquids

  • US 8,064,757 B2
  • Filed: 08/06/2009
  • Issued: 11/22/2011
  • Est. Priority Date: 05/11/2005
  • Status: Active Grant
First Claim
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1. A water heater comprising:

  • a tank;

    a heating source;

    a first temperature sensor positioned at a first location with respect to the tank;

    a second temperature sensor positioned at a second location with respect to the tank;

    a processor coupled to the first temperature sensor, the second temperature sensor, and the heating source, the processor receives a first temperature value from the first temperature sensor, receives a second temperature value from the second temperature sensor, and controls operation of the heating source; and

    a computer readable memory storing water tank temperature profile information and a set of computer instructions, andwherein the computer instructions, when executed on the processor, cause the processor toreceive the first temperature value and the second temperature value,access the water tank temperature profile information,determine an estimated amount of hot water in the tank based on the first temperature value, the second temperature value, and the water tank temperature profile information.

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