Resources Contact Us Home
Water heating system

Image Number 2 for United States Patent #4401100.

A water heating system comprises a lower energy storage tank connected with a source of energy and an upper tank mounted on top of the lower. The upper tank may be a conventional water heater or a water storage tank connected at an outlet therefrom with an instantaneous type water heater, and the tanks are interconnected through a valve. The valve operates to direct incoming cold water through a heat exchanger in the lower tank for being preheated prior to introduction into the upper tank and accommodates a thermal syphon effect between the tanks when fresh water is not being supplied, whereby heat energy is automatically transferred from the lower to the upper tank. The lower tank may advantageously and economically comprise a conventional drum, for example a 55 gallon drum, and all system components are mounted in a cover assembly for the lower tank, so that the upper tank need not be specially fabricated, with the cover assembly also serving to support the upper tank.

  Recently Added Patents
Enterprise seamless mobility
Display device substrate, method for manufacturing the same, display device, method for forming multi-layer wiring, and multi-layer wiring substrate
Process for making diethyl ether from acetic acid
Method for combining images and magnetic resonance scanner
High performance design rule checking technique
Radiation protective garment with forced ventilation and method
Light fitting
  Randomly Featured Patents
Recessed gate for a CMOS image sensor
Altitude compensating device for carburetors
Compounds and organic light emitting diode using the same
Medical devices and applications of polyhydroxyalkanoate polymers
Dual chamber pacemaker with adaptive atrial escape interval
Nonvolatile memory devices
Method and apparatus for accurate controls input
Process and apparatus for applying labels
Computer case shell with handgrip
Heat driven concentrator with alternate condensers