Energy recovery system

1. An energy recovery system comprising:

a housing containing an exhaust vent;

a first pressure vessel contained within the housing for heating a first fluid, said first pressure vessel containing said first fluid;

a second pressure vessel contained within the first pressure vessel for containing a second fluid, such that said second pressure vessel is immersed in said first pressure vessel, said second pressure vessel containing said second fluid;

a four-stroke opposed-piston engine contained within the housing, said engine containing an intake valve and an exhaust valve wherein said exhaust valve fluidically communicates with the housing exhaust vent and thermodynamically communicates with said second fluid;

at least one electric generator operatively communicating with the four-stroke opposed piston engine; and

a cooling jacket disposed about said four-stroke opposed piston engine, said cooling jacket containing a coolant, said coolant thermodynamically communicating with said first fluid.

2. The energy recovery system of claim 1 further comprising:

a first heat exchanger fluidically communicating with the exhaust valve and the exhaust vent, and thermodynamically communicating with the second fluid; and

a second heat exchanger fluidically communicating with the coolant of the cooling jacket and thermodynamically communicating with the first fluid.

3. The energy recovery system of claim 1 wherein said first fluid is water.

4. The energy recovery system of claim 1 wherein said second fluid is water.

5. A combined heat and power system comprising:

a four-stroke opposed piston engine for generating heat and power, and

a pressurized heating system including a first pressure vessel containing a first fluid in thermodynamic communication with an exhaust stream of said engine, and a second pressure vessel containing said first pressure vessel, said second pressure vessel containing a second fluid in thermodynamic communication with a coolant of said engine.

6. The combined heat and power system of claim 5 further comprising a dampening system in operable communication with said four-stroke opposed piston engine.

7. A combined heat and power system comprising:

a first pressure vessel containing a first fluid, and

a second pressure vessel contained within said first pressure vessel and containing a second fluid, said second pressure vessel containing a fluid inlet and a fluid outlet, said first and second fluids in thermodynamic communication with at least one heat source,

wherein said heat source is a four-stroke opposed piston engine,

wherein said four-stroke opposed piston engine provides exhaust thermodynamically communicating with said second pressure vessel,

wherein said four-stroke opposed piston engine contains a coolant thermodynamically communicating with said first pressure vessel.

8. The combined heat and power system of claim 7 wherein said first pressure vessel contains a first heat exchanger in fluid communication with said heat source.

9. The combined heat and power system of claim 8 wherein said first heat exchanger is in fluid communication with said coolant of said four-stroke opposed piston engine.

10. The combined heat and power system of claim 9 wherein said coolant stream is proximate to the first pressure vessel as the coolant stream enters the first heat exchanger.

11. The combined heat and power system of claim 7 wherein said second pressure vessel contains a second heat exchanger in fluid communication with said heat source.

12. The combined heat and power system of claim 11 wherein said second heat exchanger is in fluid communication with said exhaust of said four-stroke opposed piston engine.

13. The combined heat and power system of claim 7 wherein said first and second fluids are water.