Water heating system including recycle loop
OwnerPeter L. Torresinventor
Life of this patent
Estimating the term…
Abstract
A water heating system includes a boiler which is connected with a source of water supply for receiving water under pressure. An exhaust flue is connected to the boiler for the discharge of gaseous products of combustion. A pair of concentrically arranged coils is positioned within the exhaust flue and is connected with the conduit feeding water to the boiler. A recycle loop is thus provided for withdrawing a minor portion of the water being fed to the boiler and for recycling same at a higher temperature to the feed conduit. The water circulates within the loop by natural connection.
Claims4
In a water heating system which includes a boiler, first conduit means connected between a water supply and said boiler, means for heating the water within and means for supplying water under pressure to said boiler, and an exhaust flue for discharging heated products of combustion from said boiler, the improvement comprising:
- at least one coil of heat conductive material positioned within said exhaust flue;
- second conduit means connected between said first conduit means and the lower end of said coil for withdrawing a minor portion of the water being conducted to said boiler for passage through said coil in heat exchange relation with the combustion gases discharged through said flue;
- and third conduit means connected between the upper end of said coil and said first conduit means upstream of the point of connection between said first and second conduit means for the recycling of heated water to said first conduit means, whereby a recycle loop is provided for the heating of a portion of the water being conducted from said water supply to said boiler.
Dependencies are inferred from the claim text.