Composite thermal system

• US 20030221717A1
• Filed: 05/30/2003
• Published: 12/04/2003
• Est. Priority Date: 05/30/2002
• Status: Abandoned Application

• Current Assignee: Rensselaer Polytechnic Institute
• Original Assignee: Rensselaer Polytechnic Institute
• Inventors: Dessel, Steven Van
• Application Number:
  US10/448,086
• Publication Number:
  US 20030221717A1
• Time in Patent Office: Days
• US Class Current: 136/206
• CPC Class Codes: F24F 2005/0064 using solar energy
• CPC Class Codes: F24F 2005/0067 with photovoltaic panels
• CPC Class Codes: F24F 5/0042 characterised by the application of thermo-electric units or the Peltier effect
• CPC Class Codes: F24F 5/0046 using natural energy, e.g. solar energy, energy from the ground
• CPC Class Codes: H02S 10/10 including a supplementary source of electric power, e.g. hybrid diesel-PV energy systems combinations with gas-turbine plants F02C6/00
• CPC Class Codes: H10N 10/00 Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects integrated devices or assemblies of multiple devices H10N19/00
• CPC Class Codes: Y02E 10/50 Photovoltaic [PV] energy

Abstract

There is provided a composite thermal system. The composite thermal system includes a thermoelectric system and a photovoltaic system. The photovoltaic system converts light energy into electrical energy. The thermoelectric system converts electrical energy into thermal energy. The photovoltaic system is integral with and electrically connected to the thermoelectric system for providing electrical energy to the thermoelectric system.

Claims

1. A composite thermal system comprising:

a thermoelectric system that converts electrical energy into thermal energy; and

a photovoltaic system that converts light energy into electrical energy, wherein the photovoltaic system is integral with and electrically connected to the thermoelectric system for providing electrical energy to the thermoelectric system.

2. The composite thermal system of claim 1, further comprising:

a substrate; and

wherein the thermoelectric system comprises a thin film thermoelectric layer formed over the substrate, and the photovoltaic system comprises a thin film photovoltaic layer formed over the substrate.

3. The composite thermal system of claim 2, wherein the thin film photovoltaic layer is formed over the thin film thermoelectric layer.

4. The composite thermal system of claim 2, wherein the substrate is transparent.

5. The composite thermal system of claim 2, wherein the substrate comprises a glazing.

6. The composite thermal system of claim 2, wherein the substrate comprises glass.

7. The composite thermal system of claim 2, wherein the composite thermal system is arranged on the surface of a storage container.

8. The composite thermal system of claim 2, wherein the composite thermal system is arranged on the window of an automobile.

9. The composite thermal system of claim 2, wherein the composite thermal system is arranged as part of the skin of a space station or a space transport vessel.

10. The composite thermal system of claim 2, further comprising:

a heat storage layer disposed between the thin film thermoelectric layer and the substrate.

11. The composite thermal system of claim 2, wherein the total thickness of the thin film thermoelectric layer and the thin film photovoltaic layer is less than 500 micrometers.

12. The composite thermal system of claim 1, wherein the thermoelectric system comprises a plurality of thermoelectric modules.

13. The composite thermal system of claim 12, further comprising:

a heat storage layer, wherein the thermoelectric modules are disposed adjacent to and thermally connected to the heat storage layer.

14. The composite thermal system of claim 13, further comprising:

a thermal insulation layer comprising a plurality of thermal insulation regions, the thermal insulation regions are disposed adjacent to the heat storage layer and laterally adjacent the plurality of thermoelectric modules.

15. The composite thermal system of claim 13, further comprising:

a plurality of first heat sinks, each of the first heat sinks is adjacent to a respective of the plurality of the thermoelectric modules and providing a thermal path between its respective thermoelectric module and the heat storage layer.

16. The composite thermal system of claim 13, further comprising:

a plurality of second heat sinks, each of the second heat sinks is adjacent to a respective one of the plurality of the thermoelectric modules on an opposing side from a respective of the first heat sinks, and providing a thermal path from its respective thermoelectric module in a direction opposite from the heat storage layer.

17. The composite thermal system of claim 16, wherein the photovoltaic system is disposed to provide an air space between the photovoltaic system and the second heat sinks, and wherein each of the second heat sinks provides a thermal path from its respective thermoelectric module to the air space.

18. The composite thermal system of claim 13, further comprising:

a first support structure supporting the plurality of thermoelectric modules and heat storage layer; and

a second support structure supporting a photovoltaic layer of the photovoltaic system, and wherein the second support structure is supported by the first support structure.

19. The composite thermal system of claim 18, wherein an air space is disposed between the first and second support structures.

20. The composite thermal system of claim 18, further comprising:

a thermal insulation layer comprising a plurality of thermal insulation regions, the thermal insulation regions are disposed between the heat storage layer and the first support structure and laterally adjacent the plurality of thermoelectric modules.

21. The composite thermal system of claim 12, wherein the photovoltaic system is disposed on a first side of the plurality of thermoelectric modules, and the composite thermal system further comprising:

a thermal insulation layer disposed on a second side of the plurality of thermoelectric modules opposite to the first side, the thermal insulation layer having a plurality of ventilation pathways, each ventilation pathway extending from a respective thermoelectric module of the plurality of thermoelectric modules into the thermal insulation layer.

22. The composite thermal system of claim 21, further comprising a plurality of air filters, each air filter disposed in a respective ventilation pathway of the plurality of ventilation pathways.

23. The composite thermal system of claim 21, further comprising:

a plurality of first heat sinks, each of the first heat sinks is adjacent to a respective of the plurality of the thermoelectric modules and providing a thermal path between its respective thermoelectric module and a respective of the ventilation pathways.

24. The composite thermal system of claim 23, further comprising:

a plurality of second heat sinks, each of the second heat sinks is adjacent to a respective of the plurality of the thermoelectric modules on an opposing side from a respective of the first heat sinks, and providing a thermal path from its respective thermoelectric module in a direction opposite from the thermal insulation layer.

25. The composite thermal system of claim 24, wherein the photovoltaic system is disposed to provide an air space between the photovoltaic system and second heat sinks, and wherein each of the second heat sinks provides a thermal path from its respective thermoelectric module to the air space.

26. The composite thermal system of claim 21, further comprising:

a first support structure supporting the plurality of thermoelectric modules and thermal insulation layer; and

a second support structure supporting a photovoltaic layer of the photovoltaic system, and wherein the second support structure is supported by the first support structure.

27. The composite thermal system of claim 26, wherein an air space is disposed between the first and second support structures.

28. The composite thermal system of claim 1, wherein the thermoelectric system comprises a thermoelectric layer and the photovoltaic system comprises a photovoltaic layer.

29. The composite thermal system of claim 28, further comprising:

a heat dissipation layer disposed over the thermoelectric layer, wherein the photovoltaic layer is disposed over the heat dissipation layer.

30. The composite thermal system of claim 28, wherein the heat dissipation layer comprises a cellular metallic substrate or an adhesive with good thermal conductivity.

31. The composite thermal system of claim 28, further comprising:

a structural support layer, wherein the thermoelectric layer is formed over the structural support layer.

32. The composite thermal system of claim 31, wherein the total thickness of the thermoelectric layer, the photovoltaic layer, and the structural support layer is less than 100 mm.

33. The composite thermal system of claim 31, further comprising:

a heat storage layer disposed between the thermoelectric layer and the structural support layer.

34. The composite thermal system of claim 33, wherein the heat storage layer comprises a phase change material.

35. The composite thermal system of claim 1, further comprising:

an electrical distribution system that distributes electrical energy provided from the photovoltaic system to the thermoelectric system.

36. The composite thermal system of claim 35, further comprising:

an electrical storage system that stores some of the electrical energy provided from the photovoltaic system.

37. The composite thermal system of claim 35, wherein the thermoelectric system comprises a plurality of thermoelectric regions, and further comprising:

a plurality of temperature sensors, each temperature sensor detecting a temperature of a respective of the thermoelectric regions; and

a thermal control system controlling the electrical distribution system to distribute electrical energy provide from the photovoltaic system based on signals from the temperature sensors.

38. The composite thermal system of claim 1, wherein the system is arranged as at least a portion of a building thermal envelope.

42. The composite thermal system of claim 11, wherein the total thickness of the thin film thermoelectric layer and the thin film photovoltaic layer is less than 100 micrometers.

43. The composite thermal system of claim 1, wherein the composite thermal system is arranged as part of the skin of a space station or a space transport vessel.

44. The composite thermal system of claim 1, further comprising:

a heat storage layer disposed between the thin film thermoelectric layer and the substrate.

39. A method of controlling the temperature of a structure, the structure comprising a thermoelectric system that converts electrical energy into thermal energy, a photovoltaic system that converts light energy into electrical energy, wherein the photovoltaic system is integral with and electrically connected to the thermoelectric system for providing electrical energy to the thermoelectric system, and a plurality of thermoelectric regions, the method comprising:

controlling the electrical energy provided by the photovoltaic system to the thermoelectric system so that at least some of the thermoelectric regions have different temperatures.

40. The method of claim 39, wherein the structure comprises a building, and the thermoelectric regions respectively correspond to rooms of the building.

41. A method of controlling the temperature of a building, the building comprising a thermal envelope comprising a thermoelectric system that converts electrical energy into thermal energy, a photovoltaic system that converts light energy into electrical energy, wherein the photovoltaic system is integral with and electrically connected to the thermoelectric system for providing electrical energy to the thermoelectric system, the method comprising:

converting light energy to electrical energy via the photovoltaic system during the day and transferring the electrical energy to thermoelectric system;

converting the transferred electrical energy via the thermoelectric system to thermal energy to heat a heat storage layer of the thermal envelope;

dissipating heat from the heat storage layer to the thermoelectric system towards air external to the building during the night; and

using the dissipating heat to generate electricity via the thermoelectric system.