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
Memory access monitoring method and device
Dimmable LED light fixture having adjustable color temperature
Light-emitting device package and method of manufacturing the same
Controller with screen
Hydrostatic pad pressure modulation in a simultaneous double side wafer grinder
Mobile terminal device capable of more effectively utilizing operation portions, conductive portion, operation detecting unit, power supply unit, and signal processing unit
Semiconductor device
  Randomly Featured Patents
Light emitting diode employing an array of nanorods and method of fabricating the same
Cyclic redundancy calculation circuitry for use in medical devices and methods regarding same
Information storage device, information storage program, verification device and information storage method
Automatically identifying an edge-facing router
Apparatus for cleaning precision components
Iron-based high saturation magnetic induction amorphous alloy core having low core and low audible noise
High-Voltage CMOS transistors on a standard CMOS wafer
Speaker module design
Device for electromagnetically securing a lock barrel
Monitor display system