Cogeneration system

• US 4,736,111 A
• Filed: 11/21/1986
• Issued: 04/05/1988
• Est. Priority Date: 10/03/1984
• Status: Expired due to Fees

• Current Assignee: Craig L. Linden
• Original Assignee: Craig L. Linden
• Inventors: Linden, Craig L.
• Primary Examiner(s): Shoop, Jr., William M.
• Assistant Examiner(s): Duncanson, Jr., W. E.
• Application Number:
  US06/933,738
• Time in Patent Office: 501 Days
• Field of Search: 290/2, 290/40 R, 60/645, 60/549, 237/12.1, 123/2
• US Class Current: 290/2
• CPC Class Codes: F02B 1/04 with fuel-air mixture admission into cylinder
• CPC Class Codes: F02B 63/04 for electric generators
• CPC Class Codes: F02B 63/044 the engine-generator unit being placed on a frame or in an housing
• CPC Class Codes: F02B 77/11 Thermal or acoustic insulation
• CPC Class Codes: F02G 2260/00 Recuperating heat from exhaust gases of combustion engines and heat from cooling circuits
• CPC Class Codes: F02G 5/02 Profiting from waste heat of exhaust gases
• CPC Class Codes: F02G 5/04 in combination with other waste heat from combustion engines
• CPC Class Codes: Y02E 20/14 Combined heat and power generation [CHP]
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies

Abstract

A cogeneration system utilizing a liquid cooled prime mover for on-site generation of electrical and thermal energy. A radiant heat retardant material surrounds the prime mover to prevent its cooling through radiation whereby the heat otherwise radiated is absorbed by the coolant for extraction by a heat exchanger.

Claims

1. A cogeneration system comprising:

a prime mover characterized in operation by the generation of heat and adapted to be coupled to a power transducer;

containment means enclosing said prime mover and including low heat conductivity material completely surrounding said prime mover in closely adjacent relationship and thereby retarding the flow of radiated heat from said prime mover;

means for supplying air from outside said containment means to said prime mover;

means for supplying fuel from outside said containment means to said prime mover;

means for conveying exhaust gas from said prime mover to the outside of said containment means; and

means for circulating cooling fluid through said prime mover for collection of heat generated by said prime mover, and for circulating said cooling fluid to the exterior of said containment means for extraction of said heat generated by said prime mover, said low heat conductivity material acting as a thermal barrier tending to cause said radiated heat to be absorbed by said cooling fluid.

2. A cogeneration system according to claim 1 wherein said prime mover is an internal combustion engine, and wherein said transducer is an electrical generator located in said containment means, said cooling fluid also being circulated through said electrical generator by said means for circulating cooling fluid.

3. A cogeneration system according to claim 1 wherein said containment means comprises an enclosure having an internal chamber whose otherwise unoccupied spaces are filled with said low heat conductivity material.

4. A cogeneration system according to claim 3 wherein said low heat conductivity material comprises a fluent particulate material conformable to irregular contours.

5. A cogeneration system according to claim 3 wherein said low heat conductivity material comprises particles of vermiculite.

6. A cogeneration system according to claim 3 wherein said low heat conductivity material comprises an inert gas.

7. A cogeneration system according to claim 3 wherein said low heat conductivity material comprises air at subatmosphere pressure.

8. A cogeneration system according to claim 3 wherein said low heat conductivity material comprises heat insulating material in a plurality of interconnected bags movable relative to each other for ease of placement and removal relative to said enclosure.

9. A cogeneration system according to claim 3 wherein said enclosure is fluid tight;

and including means for pressurizing said enclosure with an inert gas, and means for detecting a change of pressure in said enclosure whereby the presence of a fuel leakage opening in the components in said enclosure can be detected.

10. A cogeneration system according to claim 6 wherein said gas is nitrogen for preventing an accumulation and explosion of gaseous fuel within said enclosure.

11. A cogeneration system according to claim 1 wherein said means for supplying fuel includes fuel carburetion means located externally of said containment means whereby any fuel leakage from said fuel carburetion means is isolated from the interior of said containment means.

12. A cogeneration system comprising:

an internal combustion engine and a transducing device coupled together and characterized in operation by the generation of heat including radiated heat from the external surfaces of said engine;

an enclosure housing enclosing said engine and including radiation heat flow retardant material disposed in conformable, completely surrounding relationship relative to said surfaces, thereby tending to retard the flow of said radiated heat;

means for carrying the product of said transducing device to the outside of said enclosure;

means for supplying air from outside said enclosure to said engine;

means for supplying fuel from outside said enclosure to said engine;

means for conveying exhaust gas from said engine to the outside of said enclosure; and

means for circulating cooling fluid through said engine for collection of heat generated by said engine and for circulating said cooling fluid to the exterior of said enclosure for extraction of said heat, said heat flow retardant material acting as a thermal barrier tending to cause said radiated heat to be absorbed by said cooling fluid.

13. A cogeneration system according to claim 12 wherein said retardant material comprises particulate matter.

14. A cogeneration system according to claim 12 wherein said low heat flow retardant material comprises particles of vermiculite.

15. A cogeneration system according to claim 12 wherein said enclosure is fluid tight, and including means for pressurizing said enclosure with an inert gas, and means for detecting a change of pressure in said enclosure whereby the presence of a fuel leakage opening in the components in said enclosure can be detected.

16. A cogeneration system according to claim 15 wherein said gas is nitrogen for preventing an accumulation and explosion of gaseous fuel leaking into said enclosure.

17. A cogeneration system according to claim 12 wherein said means for supplying fuel includes fuel carburetion means located externally of said enclosure whereby any fuel leakage from said fuel carburetion means is isolated from the interior of said enclosure.

18. A cogeneration system according to claim 12 wherein said means for supplying fuel comprises a natural gas delivery system.

19. A cogeneration system comprising:

a prime mover characterized in operation by the generation of heat, the exterior surfaces of said prime mover being characterized by an absence of moving parts;

containment means including low heat conductivity material in solid form completely surrounding and engaging said exterior surfaces and thereby retarding heat radiation from said prime mover; and

means for circulating cooling fluid through said prime mover for collection of heat generated by said prime mover, and for circulating said cooling fluid to the exterior of said containment means for extraction of said heat generated by said prime mover.

20. A cogeneration system according to claim 19 wherein said containment means comprises an enclosure having an internal chamber whose otherwise unoccupied spaces are filled with solid form low heat conductivity material comprising particles of fluent material.

21. A cogeneration system according to claim 19 wherein said low heat conductivity material comprises a layer of heat insulating material.

22. A cogeneration system comprising:

an engine characterized in operation by the generation of heat;

an enclosure housing said engine;

carburetion means located externally of said enclosure and operative to provide a fuel/air mixture;

means for conveying said mixture from outside said enclosure to said engine; and

means for circulating cooling fluid through said engine for collection of heat generated by said engine and for circulating said cooling fluid to the exterior of said enclosure for extraction of said heat.

23. A cogeneration system comprising:

a prime mover characterized in operation by the generation of heat and adapted to be coupled to a power transducer;

containment means around said prime mover, including low heat conductivity material surrounding said prime mover sufficiently to substantially reduce the flow of radiated heat from said prime mover;

means for supplying air from outside said containment means to said prime mover;

means for supplying fuel from outside said containment means to said prime mover;

means for conveying exhaust gas from said prime mover to the outside of said containment means; and

means for circulating cooling fluid through said prime mover for collection of heat generated by said prime mover, said low heat conductivity material acting as a thermal barrier tending to cause said radiated heat to be absorbed by said cooling fluid.

24. A cogeneration system according to claim 23 wherein said low heat conductivity material comprises a blanket of heat insulating material.

25. A cogeneration system according to claim 23 wherein said low heat conductivity material comprises a shell of heat insulating material.