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Hot water storage system

  • US 5,317,670 A
  • Filed: 10/19/1992
  • Issued: 05/31/1994
  • Est. Priority Date: 10/19/1991
  • Status: Expired due to Term
First Claim
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1. A hot water system for connection to a water supply and a local hot water usage system, for minimizing power consumption during peak power consumption hours and apportioning power consumption during off-peak hours, comprising:

  • a) a first hot water tank having an inlet and an outlet, said inlet being connected to said water supply for receiving water therefrom into said first tank;

    b) a second hot water tank having an inlet connected to said outlet from said first hot water tank for receiving water from said first tank into said second tank, and an outlet for discharging water from said second tank to said local hot water usage system;

    c) first heating means disposed in said first hot water tank for heating water therein;

    d) second heating means disposed in said second hot water tank for heating water therein;

    e) controller means connected to said first heating means and to said second heating means for;

    i) disabling said first heating means and said second heating means during said peak power consumption hours;

    ii) enabling said second heating means and disabling said first heating means during a first portion of said off-peak hours; and

    iii) enabling said first heating means and disabling said second heating means during a second portion of said off-peak power hours.

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