Electrical water heater with a dual resistive heating element and a control method for energy management

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United States of America Patent

PATENT NO 9885498
SERIAL NO

14121995

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Abstract

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An electrical water heater adapted for energy management and a method of controlling the consumption of electrical power from the power supply grid of a utility is described. The bottom resistive heating element of the water heater is a dual element resistive heating element which has a high power rated resistive heating element to heat water and a further low power rated resistive heating element. The power rating of the low power resistive heating element is calculated to be lower than the supply grid diversified mean load. A controller has a communication link with a utility which manages the power supply grid. The utility can control the resistive heating elements of the dual element in such a way, and depending on conditions of the grid, to conserve energy and regulate its frequency thereby resulting in a cost saving to the consumer and the utility. The low power rated resistive heating element is also connectable to an alternative power source.

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Patent Owner(s)

Patent OwnerAddress
A O SMITH ENTERPRISES LTD768 ERIE STREET STRATFORD ONTARIO N4Z 1AZ

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lesage, Claude Pointe-Claire, CA 57 304
Lesage, Jean-Claude Kirkland, CA 29 118

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