Internally Heated Steam Generation System and Heat Exchanger

Abstract

A very high efficiency internally heated steam generation system and heat exchanger are disclosed, wherein a generally rectangular housing includes end and side walls and top and bottom walls, each containing a series of small-diameter interconnected serpentine tube coil sets. A heating chamber is located at the bottom portion and at the front of the container and includes a source of fuel to generate heat within the chamber. A source of water enters the container where it is heated and passes sequentially through the several coil sets where it is heated and changes phase into steam which then passes into one or more steam tanks where it is stored and extracted when needed for a variety of uses.

1 . A high efficiency internally heated steam generating system and heat exchanger comprising;
 A generally rectangular solid shaped outer container;
 a plurality of capillary serpentine wound tubes arranged as a coil set within and on each of the top, bottom, ends and sides of the container, 
   a heating chamber within the lower portion of said container,   means for producing heat in said heating chamber,   means to introduce a supply of water into the system,   said water being heated in said heating chamber and then passing sequentially through each of the coil sets wherein it changes its phase into steam,   at least one vertically oriented steam tank which receives steam from the output of the coil sets,   and means to withdraw steam from said at least one steam tank.   
     
     
         2 . The steam generating system and heat exchanger as set forth in  claim 1 , wherein the water supplied to the system is pre-heated. 
     
     
         3 . The steam generating system and heat exchanger as set forth in  claim 1 , wherein each of the coil sets include an inlet and an outlet and wherein said inlets and outlets are located in the same plane and are parallel to each other. 
     
     
         4 . The steam generating system and heat exchanger as set forth in  claim 3 , wherein, each coil set is encased in refractory cement. 
     
     
         5 . The steam generating system and heat exchanger as set forth in  claim 1  wherein four steam tanks are provided. 
     
     
         6 . The steam generating system and heat exchanger as set forth in  claim 1 , wherein, the steam entering the steam tank is superheated. 
     
     
         7 . The steam generating system and heat exchanger as set forth in  claim 1 , wherein, the steam entering the steam tank is saturated. 
     
     
         8 . The steam generating system and heat exchanger as set forth in  claim 1 , and further including vertical and horizontal steam generating coil sets in communication with the wall coil sets and being located above the heating chamber. 
     
     
         9 . The steam generating system and heat exchanger as set forth in  claim 1 , wherein, a grate for holding and burning solid fuel is located within the heating chamber. 
     
     
         10 . The steam generating system and heat exchanger as set forth in  claim 3 , wherein, gas burner means provides heat into the heating chamber. 
     
     
         11 . The steam generating system and heat exchanger as set forth in  claim 3 , and further including blower means for providing induction air into the heating chamber. 
     
     
         12 . A high efficiency internally heated steam generating system and heat exchanger comprising;
 A generally rectangular solid shaped outer container;   a plurality of capillary serpentine wound small diameter tubes arranged as a coil set within and on each of the top, bottom, ends and sides of the container,   an additional mid-wall coil set located between the ends of the container,   a heating chamber within the lower portion of said container,   a source of fuel for producing heat in said heating chamber,   means to introduce a supply of water into the system,   said water being heated in said heating chamber and then passing sequentially through each of the coil sets wherein it changes its phase into steam,   at least one vertically oriented steam tank which receives steam from the output of the coil sets,   and means to withdraw steam from said at least one steam tank.   
     
     
         13 . The steam generating system and heat exchanger as set forth in  claim 12 , and further including vertical and horizontal steam generating coil sets in communication with the wall coil sets and the mid-wall coil set and being located above the heating chamber. 
     
     
         14 , The steam generating system and heat exchanger as set forth in  claim 12 , wherein, each coil set is encased in refractory cement.