Patent ID: 8720388
Filing Date: 2014-05-13
Classification: F24D

Abstract:
1. A water heating control and storage system, comprising: an insulated tank for holding water to be heated to a storage temperature greater than approximately 150 degrees F.; a heat exchanger operatively selectively coupled in heat exchange relationship with the water in the insulated tank by a first plumbing connection for transferring heat from a first flow of the water heated in the tank to another medium; and an operation control device configured to (i) receive and process a demand response signal and to operate the system in at least one of a plurality of operating modes, including at least a water heating mode and a heat exchange mode, and (ii) selectively operate the system in the heat exchange mode and the water heating mode and comprises a control to process at least one signal that indicates an energy usage state from a plurality of energy usage states of an energy provider including at least a peak state and an off peak state; wherein the operation control devices operates the heat exchange mode when the energy usage state and associated cost is the peak state.