US20020179137A1 - Improved tpv cylindrical generator for home cogeneration - Google Patents

Improved tpv cylindrical generator for home cogeneration Download PDF

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US20020179137A1
US20020179137A1 US09/866,649 US86664901A US2002179137A1 US 20020179137 A1 US20020179137 A1 US 20020179137A1 US 86664901 A US86664901 A US 86664901A US 2002179137 A1 US2002179137 A1 US 2002179137A1
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Prior art keywords
emitter
generator
burner
array
tube
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US6489553B1 (en
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Lewis Fraas
John Samaras
Leonid Minkin
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JX Crystals Inc
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JX Crystals Inc
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Assigned to JX CRYSTALS INC. reassignment JX CRYSTALS INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FRAAS, LEWIS M., MINKIN, LEONID M., SAMARAS, JOHN E.
Priority to PCT/US2001/026826 priority patent/WO2002099895A1/en
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02SGENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/40Thermal components
    • H02S40/44Means to utilise heat energy, e.g. hybrid systems producing warm water and electricity at the same time
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02SGENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S10/00PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
    • H02S10/30Thermophotovoltaic systems
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/10Photovoltaic [PV]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/20Solar thermal
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/70Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/60Thermal-PV hybrids

Definitions

  • TPV ThermoPhotoVoltaic
  • combustion is used to heat a cylindrical tube to a temperature in the range of 1200 C to 1500 C.
  • This glowing tube then emits infrared radiant energy.
  • An array of low bandgap photovoltaic (PV) cells surrounds this glowing emitter, receives the infrared radiant energy, and converts it to electricity.
  • PV photovoltaic
  • Our previously described cylindrical TPV generator was also equipped with a recuperator used to recycle heat from the combustion exhaust stream back into the combustion air for a higher efficiency TPV generator.
  • recuperator used to recycle heat from the combustion exhaust stream back into the combustion air for a higher efficiency TPV generator.
  • these cylindrical TPV generators can potentially be used to generate heat and power for the home with 90% fuel utilization efficiency.
  • AR/RM AntiReflection coated Refractory Metal
  • IR emitter designed to emit infrared energy primarily in a wavelength band that the PV cells can convert.
  • many of these AR/RM emitters cannot be operated in air because of oxidation of the refractory metal.
  • GaSb PV cells that respond to IR wavelengths out to 1.8 microns and AR coated tungsten foil as the key emitter and receiver components.
  • various other material combinations are possible as long as they operate in this IR wavelength range.
  • Our cylindrical TPV generator uses low bandgap PV cells mounted on circuits in a polygonal array around an IR emitter.
  • the IR emitter is located on the outside surface of a radiant tube burner coaxial with the PV array.
  • the combustion gases are completely contained within the radiant tube burner.
  • the PV array is mounted inside a leak-tight envelope cooled on its outer surface by either water or air flow.
  • Flanges on either end of this PV array container allow for hermetic seals.
  • the flange on one end of this PV container seals to a flange on the end of the emitter support tube. This seal allows the space between the emitter and the PV array to be back-filled with an inert gas.
  • the emitter support tube is elongated extending into the recuperator section and then folded back exiting the recuperator with a slightly larger coaxial tube connecting to a flange sealing to the Photovoltaic Converter Array (PCA).
  • PCA Photovoltaic Converter Array
  • the folded back emitter support tube blends nicely with a two stage folded back recuperator assembly consisting of two sets of finned disks.
  • a stack of smaller finned disks is located inside the emitter support tube and a second stack of larger finned disks is located outside the fold back section.
  • the dual disk stack design has several advantages. First, it is very compact being much shorter in length than a single disk stack. Second, it is more efficient than a single disk stack because the hottest section is inside cooler sections. In a single disk stack, the outer section is the hottest. The third advantage is somewhat subtle. This design allows for a low NOx burner/recuperator assembly.
  • FIG. 1 shows the basic cylindrical TPV generator concept as described in our previous patents.
  • FIG. 2 shows a horizontal cross section through the TPV converter cylinder with the PV array and IR emitter locations indicated.
  • FIG. 3 shows a vertical cross section through our improved TPV generator concept with the improvements labeled in capital letters.
  • FIG. 4 shows an internal view of the PV cell and circuit array inside the leak tight envelope with hermetic seal flanges and external water-cooling.
  • FIG. 5 shows a photograph of the photovoltaic converter array assembly.
  • FIG. 6 shows a photograph of the shingle circuits with low bandgap cells before mounting inside the leak tight housing.
  • FIG. 7 shows a photograph of the inner finned disk recuperator stack.
  • FIG. 8 shows one way of integrating the TPV generator into a home for the cogeneration of electricity, hot water, and space heating (CHP).
  • FIG. 1 shows the cylindrical TPV generator concept with the key components labeled.
  • the AR/RM emitter can be an AR coated tungsten foil wrapped around an emitter support tube.
  • a photovoltaic (PV) cell array 5 surrounds the emitter 3 .
  • a water cooling jacket 7 is provided outside the array 5 .
  • the jacket has an inlet 8 and an outlet 9 .
  • a combustion air blower 11 supplies combustion air through a recuperator 13 . Hot combustion exhaust gases exit through exhaust 15 . Provisions are also required for a low NOx efficient burner/recuperator assembly. Finally, provisions are required for high IR to electric conversion efficiency.
  • FIGS. 2 and 3 show horizontal and vertical cross sections through our improved cylindrical TPV generator 21 .
  • the IR emitter 23 in FIG. 2 is an AR/RM emitter. Given an AR/RM emitter, eight specific improvements are highlighted in capital letters in FIG. 3. These improvements are as follows:
  • a burner 57 supplies fuel to preheated air 59 .
  • Combustion 61 occurs within the burner or combustion tube 55 .
  • Hot combustion gasses 63 flow upward and are turned downward by the top 65 with insulation 67 within cap 69 .
  • the upper end 71 of combustion tube 55 is spaced inward from the emitter 23 too, because of the higher heat at the upper end.
  • a flange 73 extends outward from the water gallery 75 at the outlet 9 .
  • Flange 73 is sealed to flange 77 of cap 69 .
  • Flange 78 at the inlet water gallery 79 is hermetically sealed 27 to the flange 81 between the emitter support tube 31 and the PV cell array 25 .
  • our cylindrical TPV generator 21 uses low bandgap PV cells 83 mounted on circuits 85 in a polygonal array around an IR emitter.
  • the IR emitter is located on the outside surface of a radiant tube burner coaxial with the PV array.
  • the combustion gases are completely contained within the radiant burner tube 29 .
  • the PV array is mounted inside a leak-tight envelope 89 cooled on its outer surface by water channels 91 .
  • Flanges 73 , 78 on either end of this PV array container allow for hermetic seals 27 .
  • the flange 78 on one end of this PV container 89 seals to a flange 81 on the end of the emitter support tube 31 . This seal allows the space 22 between the emitter and the PV array to be back-filled with an inert gas 24 .
  • FIG. 4 An internal view of the PV cell 83 and circuit 85 array inside the leak tight envelope 89 with hermetic seal flanges and external water-cooling 7 is shown in FIG. 4.
  • FIG. 4 also shows the electrical connections 87 , 88 to the circuits 85 .
  • Inert gas connection 93 supplies inert gas to space 22 .
  • FIG. 5 shows a photograph of the photovoltaic converter array assembly enclosure 89 .
  • FIG. 6 shows a photograph of the shingle circuits 85 with low bandgap cells 83 before bonding and mounting inside the leak tight housing 89 .
  • the radiant burner tube 29 is elongated extending into the recuperator section 33 and then folded back exiting the recuperator with a slightly larger coaxial tube 31 connecting to a flange 81 sealing 27 to the flange 78 of the Photovoltaic Converter Array (PCA) 25 .
  • PCA Photovoltaic Converter Array
  • the folded back emitter support tube 31 blends nicely with a two stage folded back recuperator assembly 33 consisting of two sets 35 , 37 of finned disks 107 , 109 .
  • a stack 35 of smaller finned disks 107 is located inside the radiant burner tube extension and a second stack 37 of larger finned disks 109 is located outside the fold back section 31 .
  • FIG. 7 shows a photograph of the inner disc stack 35 . As can be seen from this photograph, this stack is made up of finned disks 107 and rings 111 simply pressed together to make the stack.
  • the dual disk stack design has several advantages. First, it is very compact being much shorter in length than a single disk stack. Second, it is more efficient than a single disk stack, because the hottest section 35 is inside cooler sections 37 . In a single disk stack, the outer section is the hottest. The third advantage is somewhat subtle. This design allows for a low NOx burner/recuperator assembly.
  • Mirrors 51 , 53 are located at the ends of the PV array 25 to confine the IR energy 115 between the emitter 23 and the array 25 .
  • the inner burner tube 55 within the radiant burner tube 29 can be tapered in order to optimize the emitter temperature profile along the length of the emitter. Both of these provisions provide for uniform illumination of the cells 83 so that all of the cells in a series string along a circuit 85 generate approximately the same current.
  • FIG. 8 shows one way of integrating our TPV generator 121 into a home 120 for the cogeneration of electricity 123 , hot water 125 , and space heating (CHP) 127 .
  • the PCA water-cooling loop 131 can be used for space heating 127 , and the higher temperature exhaust heat 133 can be used for hot water 125 . It is best to describe the arrangement in FIG. 8 under three alternative scenarios. These three scenarios are winter, summer, and back up electric power.
  • the TPV generator 121 runs producing electricity and heat most of the time.
  • the heat produced is in the form of exhaust heat 133 and heat in the cell-cooling loop 131 .
  • These two heat inputs are both dumped through the hot water tank 135 and thence 137 into the house for space heating 127 .
  • the fuel chemical-energy utilization efficiency can be as high as 90%.
  • the generator 121 runs much of the time because both space heat and hot water are required.
  • the heat injected into the cell cooling water 131 can be used to preheat 139 the cold city water 141 .
  • the heat in the cell-cooling loop 131 bypasses the hot water tank using a switching valve 143 .
  • the exhaust heat 133 is used to bring the hot water 125 to its final required temperature. It is assumed that heat input is required primarily to heat the re-supply city water when hot water is being used in the house. Again in this case, the fuel chemical-energy utilization efficiency can be as high as 90%.
  • the TPV generator is only used when hot water is being used which, during the summer months, is only a small fraction of the time.
  • the last case to consider is when electricity is required but there is no need for heat.
  • the fuel chemical-energy utilization efficiency for generating electricity would be approximately 10%.
  • the heat in the cell-cooling loop 131 would again bypass the hot water tank using a switching valve 143 .
  • the waste heat would be dumped 145 into the ground 147 through underground piping 149 before the cooling water returns back to the PCA in the generator 121 .
  • This last case would probably be a very small fraction of the time.
  • An example where this case would be appropriate is when the utility power fails and backup power is required.

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  • Photovoltaic Devices (AREA)

Abstract

Our cylindrical TPV generator uses low bandgap PV cells mounted on circuits in a polygonal array around an IR emitter. The combustion gases are completely contained within the radiant tube burner. The PV array is mounted inside a leak-tight envelope cooled on its outer surface by either water or air flow. Flanges on either end of this PV array container allow for hermetic seals. A folded back coaxial emitter support tube provides a long path length limiting thermal conduction along its cylindrical wall from the very hot emitter section to the cooled seal flange. In our improved cylindrical TPV generator, we provide for a low temperature catalytic after-burn by providing a perforated turnaround plate coupling between the inner disk stack and the outer disk stack. This perforated turnaround plate provides a small amount of combustion air for the after-burn. A catalyst coating can be provided on the hotter surface of the outer finned disks. The after-burn occurs in the outer finned disk stack. Additional features are incorporated in our cylindrical TPV generator to provide for high conversion efficiency.

Description

    BACKGROUND OF THE INVENTION
  • We have previously described a cylindrical ThermoPhotoVoltaic (TPV) generator in which combustion is used to heat a cylindrical tube to a temperature in the range of 1200 C to 1500 C. This glowing tube then emits infrared radiant energy. An array of low bandgap photovoltaic (PV) cells surrounds this glowing emitter, receives the infrared radiant energy, and converts it to electricity. Our previously described cylindrical TPV generator was also equipped with a recuperator used to recycle heat from the combustion exhaust stream back into the combustion air for a higher efficiency TPV generator. We have noted that these cylindrical TPV generators can potentially be used to generate heat and power for the home with 90% fuel utilization efficiency. [0001]
  • In a separate more recent patent, we have described an AntiReflection coated Refractory Metal (AR/RM) IR emitter designed to emit infrared energy primarily in a wavelength band that the PV cells can convert. However, many of these AR/RM emitters cannot be operated in air because of oxidation of the refractory metal. In our specific TPV systems, we use GaSb PV cells that respond to IR wavelengths out to 1.8 microns and AR coated tungsten foil as the key emitter and receiver components. However in our previous patents, we have noted that various other material combinations are possible as long as they operate in this IR wavelength range. [0002]
  • There is a need to design a cylindrical TPV generator with a hermetic seal that allows the AR/RM emitter to operate in a non-oxidizing inert gas atmosphere. This hermetic seal design must minimize heat transfer from the very hot emitter support tube to the hermetic seal. Furthermore, for the home Combined Heat and Power (CHP) application, there is a need for a low NOx burner/recuperator combination. The recuperator design needs to be compact, inexpensive to fabricate, and integrated with the hermetic seal and low NOx requirements. Finally, the generator design needs to produce electricity with a conversion efficiency as high as possible. [0003]
  • SUMMARY OF THE INVENTION
  • Our cylindrical TPV generator uses low bandgap PV cells mounted on circuits in a polygonal array around an IR emitter. The IR emitter is located on the outside surface of a radiant tube burner coaxial with the PV array. The combustion gases are completely contained within the radiant tube burner. The PV array is mounted inside a leak-tight envelope cooled on its outer surface by either water or air flow. Flanges on either end of this PV array container allow for hermetic seals. The flange on one end of this PV container seals to a flange on the end of the emitter support tube. This seal allows the space between the emitter and the PV array to be back-filled with an inert gas. However in order to avoid overheating this seal, the emitter support tube is elongated extending into the recuperator section and then folded back exiting the recuperator with a slightly larger coaxial tube connecting to a flange sealing to the Photovoltaic Converter Array (PCA). This folded back coaxial emitter support tube provides a long path length limiting thermal conduction along its cylindrical wall from the very hot emitter section to the cooled seal flange. [0004]
  • The folded back emitter support tube blends nicely with a two stage folded back recuperator assembly consisting of two sets of finned disks. A stack of smaller finned disks is located inside the emitter support tube and a second stack of larger finned disks is located outside the fold back section. The dual disk stack design has several advantages. First, it is very compact being much shorter in length than a single disk stack. Second, it is more efficient than a single disk stack because the hottest section is inside cooler sections. In a single disk stack, the outer section is the hottest. The third advantage is somewhat subtle. This design allows for a low NOx burner/recuperator assembly. [0005]
  • It is desirable for a home TPV generator to operate with low NOx. However, high NOx can be a problem for a high temperature burner. A solution to this NOx problem is to burn the fuel at high temperature with no excess oxygen so that little NOx is generated. However, this fuel rich burn leaves CO and hydrocarbons. These can be eliminated in a low temperature after-burn with a catalyst. In our improved cylindrical TPV generator, we provide for a low temperature catalytic after-burn by providing a perforated turnaround plate coupling between the inner disk stack and the outer disk stack. This perforated turnaround plate provides a small amount of combustion air for the after-burn. A catalyst coating can be provided on the hotter surface of the outer finned disks. The after-burn occurs in the outer finned disk stack. [0006]
  • Additional features are incorporated in our cylindrical TPV generator to provide for high conversion efficiency. Mirrors are located at the ends of the PV array to confine the IR energy between the emitter and the array. Also, the inner burner tube within the emitter support tube can be tapered in order to optimize the emitter temperature profile along the length of the emitter. Both of these provisions provide for uniform illumination of the cells so that all of the cells in a series string generate approximately the same current. [0007]
  • These and further and other objects and features of the invention are apparent in the disclosure, which includes the above and ongoing written specification, with the claims and the drawings. [0008]
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 shows the basic cylindrical TPV generator concept as described in our previous patents. [0009]
  • FIG. 2 shows a horizontal cross section through the TPV converter cylinder with the PV array and IR emitter locations indicated. [0010]
  • FIG. 3 shows a vertical cross section through our improved TPV generator concept with the improvements labeled in capital letters. [0011]
  • FIG. 4 shows an internal view of the PV cell and circuit array inside the leak tight envelope with hermetic seal flanges and external water-cooling. [0012]
  • FIG. 5 shows a photograph of the photovoltaic converter array assembly. [0013]
  • FIG. 6 shows a photograph of the shingle circuits with low bandgap cells before mounting inside the leak tight housing. [0014]
  • FIG. 7 shows a photograph of the inner finned disk recuperator stack. [0015]
  • FIG. 8 shows one way of integrating the TPV generator into a home for the cogeneration of electricity, hot water, and space heating (CHP).[0016]
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • FIG. 1 shows the cylindrical TPV generator concept with the key components labeled. However, no detail is provided with regard to the key issues we address here. We begin by noting that the TPV conversion efficiency of this [0017] cylindrical generator 1 can be improved dramatically by using an AR/RM emitter 3. In a preferred embodiment, the AR/RM emitter can be an AR coated tungsten foil wrapped around an emitter support tube. However as we have pointed out above, provisions are then required for operating the AR/RM emitter in an inert gas background. A photovoltaic (PV) cell array 5 surrounds the emitter 3. A water cooling jacket 7 is provided outside the array 5. The jacket has an inlet 8 and an outlet 9. A combustion air blower 11 supplies combustion air through a recuperator 13. Hot combustion exhaust gases exit through exhaust 15. Provisions are also required for a low NOx efficient burner/recuperator assembly. Finally, provisions are required for high IR to electric conversion efficiency.
  • FIGS. 2 and 3 show horizontal and vertical cross sections through our improved cylindrical TPV generator [0018] 21. The IR emitter 23 in FIG. 2 is an AR/RM emitter. Given an AR/RM emitter, eight specific improvements are highlighted in capital letters in FIG. 3. These improvements are as follows:
  • 1. [0019] Inert gas 24 between IR AR/RM emitter 23 and PV cell array 25.
  • 2. [0020] Hermetic seal 27 between IR emitter support tube 31 and PV cell array 25.
  • 3. Fold back coaxial emitter support tube [0021] 31 within recuperator 33.
  • 4. Dual [0022] disk stack recuperator 33 with inner disk stack 35 and outerdisk stack 37.
  • 5. Perforated turn around [0023] plate 41 for after-burn 43 air supply 45.
  • 6. Catalytic coating [0024] 47 on outer disk stack 37 for clean after-burn.
  • 7. End mirrors [0025] 51, 53 for IR confinement.
  • 8. Tapered inner burner tube [0026] 55 to tailor emitter temperature uniformity.
  • As we will describe in the following paragraphs, several of these features are nicely integrated together in our improved generator design. [0027]
  • Our design starts with the fact that the AR/[0028] RM emitter 23 produces a major improvement in system efficiency because it suppresses long wavelength IR energy that the cells cannot convert. However, this leads to a requirement for inert gas 24 between the AR/RM emitter 23 and the PV array 25.
  • A [0029] burner 57 supplies fuel to preheated air 59. Combustion 61 occurs within the burner or combustion tube 55. Hot combustion gasses 63 flow upward and are turned downward by the top 65 with insulation 67 within cap 69. The upper end 71 of combustion tube 55 is spaced inward from the emitter 23 too, because of the higher heat at the upper end.
  • A [0030] flange 73 extends outward from the water gallery 75 at the outlet 9. Flange 73 is sealed to flange 77 of cap 69. Flange 78 at the inlet water gallery 79 is hermetically sealed 27 to the flange 81 between the emitter support tube 31 and the PV cell array 25.
  • Referring to FIGS. 2, 3, and [0031] 4 our cylindrical TPV generator 21 uses low bandgap PV cells 83 mounted on circuits 85 in a polygonal array around an IR emitter. The IR emitter is located on the outside surface of a radiant tube burner coaxial with the PV array. The combustion gases are completely contained within the radiant burner tube 29. The PV array is mounted inside a leak-tight envelope 89 cooled on its outer surface by water channels 91. Flanges 73, 78 on either end of this PV array container allow for hermetic seals 27. The flange 78 on one end of this PV container 89 seals to a flange 81 on the end of the emitter support tube 31. This seal allows the space 22 between the emitter and the PV array to be back-filled with an inert gas 24.
  • An internal view of the [0032] PV cell 83 and circuit 85 array inside the leak tight envelope 89 with hermetic seal flanges and external water-cooling 7 is shown in FIG. 4. FIG. 4 also shows the electrical connections 87, 88 to the circuits 85. Inert gas connection 93 supplies inert gas to space 22.
  • FIG. 5 shows a photograph of the photovoltaic converter [0033] array assembly enclosure 89. FIG. 6 shows a photograph of the shingle circuits 85 with low bandgap cells 83 before bonding and mounting inside the leak tight housing 89.
  • Returning to FIG. 3, note that the radiant burner tube [0034] 29 is elongated extending into the recuperator section 33 and then folded back exiting the recuperator with a slightly larger coaxial tube 31 connecting to a flange 81 sealing 27 to the flange 78 of the Photovoltaic Converter Array (PCA) 25. This avoids overheating the hermetic seal flange. This folded back coaxial emitter support tube 31 provides a long path length limiting thermal conduction along its cylindrical wall from the very hot emitter section 23 to the cooled seal flange.
  • The folded back emitter support tube [0035] 31 blends nicely with a two stage folded back recuperator assembly 33 consisting of two sets 35, 37 of finned disks 107, 109. A stack 35 of smaller finned disks 107 is located inside the radiant burner tube extension and a second stack 37 of larger finned disks 109 is located outside the fold back section 31. FIG. 7 shows a photograph of the inner disc stack 35. As can be seen from this photograph, this stack is made up of finned disks 107 and rings 111 simply pressed together to make the stack.
  • The dual disk stack design has several advantages. First, it is very compact being much shorter in length than a single disk stack. Second, it is more efficient than a single disk stack, because the [0036] hottest section 35 is inside cooler sections 37. In a single disk stack, the outer section is the hottest. The third advantage is somewhat subtle. This design allows for a low NOx burner/recuperator assembly.
  • It is desirable for a home TPV generator to operate with low NOx. However, high NOx can be a problem for a high temperature burner. A solution to this NOx problem is to burn the fuel at high temperature with no excess oxygen so that little NOx is generated. However, this fuel-rich burn leaves CO and hydrocarbons. These can be eliminated in a low temperature after-burn with a catalyst inside the recuperator section. In our improved cylindrical TPV generator as shown in FIG. 3, we provide for a low temperature catalytic after-burn by providing a [0037] perforated turnaround plate 41 coupling between the inner disk stack 35 and the outer disk stack 37. This perforated turnaround plate 41 provides a small amount 45 of combustion air 44 for the after-burn. A catalyst coating 47 can be provided on the hotter surface 113 of the outer finned disks 109. The after-burn occurs in the outer finned disk stack 37.
  • Referring again to FIG. 3, additional features are incorporated in our cylindrical TPV generator to provide for high conversion efficiency. [0038] Mirrors 51, 53 are located at the ends of the PV array 25 to confine the IR energy 115 between the emitter 23 and the array 25. Also, the inner burner tube 55 within the radiant burner tube 29 can be tapered in order to optimize the emitter temperature profile along the length of the emitter. Both of these provisions provide for uniform illumination of the cells 83 so that all of the cells in a series string along a circuit 85 generate approximately the same current.
  • Our cylindrical TPV generator design can be built in sizes ranging from 300 W to 3 kW. One of its intended applications is for use in the home to replace the conventional heating furnace. FIG. 8 shows one way of integrating our [0039] TPV generator 121 into a home 120 for the cogeneration of electricity 123, hot water 125, and space heating (CHP) 127.
  • As can be seen in FIG. 8, the PCA water-[0040] cooling loop 131 can be used for space heating 127, and the higher temperature exhaust heat 133 can be used for hot water 125. It is best to describe the arrangement in FIG. 8 under three alternative scenarios. These three scenarios are winter, summer, and back up electric power.
  • In the winter months, [0041] electricity 123, space heating 127, and hot water 125 are all required. In this case, the TPV generator 121 runs producing electricity and heat most of the time. The heat produced is in the form of exhaust heat 133 and heat in the cell-cooling loop 131. These two heat inputs are both dumped through the hot water tank 135 and thence 137 into the house for space heating 127. The fuel chemical-energy utilization efficiency can be as high as 90%. The generator 121 runs much of the time because both space heat and hot water are required.
  • In the summer time when only hot water is required, the heat injected into the [0042] cell cooling water 131 can be used to preheat 139 the cold city water 141. In this case, the heat in the cell-cooling loop 131 bypasses the hot water tank using a switching valve 143. The exhaust heat 133 is used to bring the hot water 125 to its final required temperature. It is assumed that heat input is required primarily to heat the re-supply city water when hot water is being used in the house. Again in this case, the fuel chemical-energy utilization efficiency can be as high as 90%. However, the TPV generator is only used when hot water is being used which, during the summer months, is only a small fraction of the time.
  • The last case to consider is when electricity is required but there is no need for heat. In this case, the fuel chemical-energy utilization efficiency for generating electricity would be approximately 10%. The heat in the cell-[0043] cooling loop 131 would again bypass the hot water tank using a switching valve 143. The waste heat would be dumped 145 into the ground 147 through underground piping 149 before the cooling water returns back to the PCA in the generator 121. This last case would probably be a very small fraction of the time. An example where this case would be appropriate is when the utility power fails and backup power is required.
  • While the invention has been described with reference to specific embodiments, modifications and variations of the invention may be constructed without departing from the scope of the invention, which is defined in the following claims. [0044]

Claims (22)

We claim:
1. A thermophotovoltaic generator comprising a burner, a combustion air guide leading to the burner, a burner or combustion tube extending upwards around the burner, an infrared emitter spaced outward from the burner tube, a photovoltaic cell array spaced outward from the emitter, an exhaust guide connected to the generator for exhausting combustion gasses, a recuperator connected to the combustion air guide and to the exhaust guide for preheating combustion air with exhaust gasses, the recuperator having fins extending into the combustion air guide and into the exhaust guide, the recuperator further comprising dual disk recuperator stacks, a fold-back emitter support tube extending between the dual disk recuperator stacks, a perforated turn around plate separating the combustion air guide from the exhaust guide for leaking the combustion air into the exhaust guide, catalyst coatings on at least some of the fins extending into the exhaust guide and cooperating with leaked combustion air for completing combustion of the exhaust gasses.
2. The generator of claim 1, further comprising inert gas disposed between the emitter and the photovoltaic cell array.
3. The generator of claim 2, further comprising a hermetic seal between the support tube and the array for sealing the inert gas between the support tube and the array.
4. The generator of claim 1, further comprising end mirrors at opposite ends of the array for reflecting infrared rays toward the array.
5. The generator of claim 1, wherein the burner tube comprises a tapered burner tube for controlling spacing between the tapered burner tube and the emitter.
6. The generator of claim 1, wherein the dual disk recuperator stacks are formed of an inner stack and an outer stack.
7. The generator of claim 6, wherein each stack is formed of disks having inward and outward extending fins and rings interconnecting the disks.
8. A thermophotovoltaic generator comprising a burner, a combustion air guide leading to the burner, a burner tube extending from the around the burner, an infrared emitter spaced outward from the burner tube, a photovoltaic cell array spaced outward from the emitter, an exhaust guide connected to the generator for exhausting combustion gasses, and inert gas disposed between the emitter and the photovoltaic cell array.
9. The generator of claim 8, further comprising a hermetic seal between the support tube and the array for sealing the inert gas between the support tube and the array.
10. The generator of claim 8, further comprising end mirrors at opposite ends of the array for reflecting infrared rays toward the array.
11. The generator of claim 8, wherein the burner tube comprises a tapered burner tube for controlling spacing between the tapered burner tube and the emitter.
12. A thermophotovoltaic generator comprising a burner, a combustion air guide leading to the burner, a burner tube extending from the around the burner, an infrared emitter spaced outward from the burner tube, a photovoltaic cell array spaced outward from the emitter, an exhaust guide connected to the generator for exhausting combustion gasses, and end mirrors at opposite ends of the array for reflecting infrared rays toward the array.
13. The generator of claim 12, wherein the burner tube comprises a tapered burner tube for controlling spacing between the tapered burner tube and the emitter.
14. A thermophotovoltaic generator comprising a burner, a combustion air guide leading to the burner, a burner tube extending from the around the burner, an infrared emitter spaced outward from the burner tube, a photovoltaic cell array spaced outward from the emitter, an exhaust guide connected to the generator for exhausting combustion gasses, and wherein the burner tube comprises a tapered burner tube for controlling spacing between the tapered burner tube and the emitter.
15. A thermophotovoltaic generator comprising a burner, a combustion air guide leading to the burner, a burner tube extending from the around the burner, an infrared emitter spaced outward from the burner tube, a photovoltaic cell array spaced outward from the emitter, an exhaust guide connected to the generator for exhausting combustion gasses, a fold back emitter support tube having an inner portion connected to the emitter having a middle portion extending away from the emitter then outward and then in the direction of the emitter and then outward for connecting to an enclosure for reducing conduction heat flow from the emitter along the emitter support tube to the enclosure.
16. The generator of claim 15, further comprising inert gas disposed between the emitter and the photovoltaic cell array.
17. The generator of claim 16, further comprising a hermetic seal between the support tube and the array for sealing the inert gas between the support tube and the array.
18. The generator of claim 15, further comprising end mirrors at opposite ends of the array for reflecting infrared rays toward the array.
19. The generator of claim 15, wherein the burner tube comprises a tapered burner tube for controlling spacing between the tapered burner tube and the emitter.
20. The generator of claim 15, further comprising a dual disk recuperator having an inner stack positioned inside the middle portion and having an outer stack positioned outside the middle portion.
21. The generator of claim 20, wherein the middle portion of the emitter support tube and the recuperator turnaround plate form the exhaust guide and further comprising a porous portion of the turnaround plate for leaking combustion air into the exhaust guide.
22. The generator of claim 21, further comprising catalyst coatings on at least some of the fins extending into the exhaust guide and cooperating with leaked combustion air for completing combustion of the exhaust gasses.
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2012366A2 (en) * 2007-07-05 2009-01-07 Federico Pirovano Photovoltaic system with improved efficiency and increment method of the electrical energy production of at least a thermo-photovoltaic solar module
WO2010057479A3 (en) * 2008-11-21 2011-07-21 Matrix Gmbh Device for generating electricity
US20170067634A1 (en) * 2014-02-21 2017-03-09 WS Wärmeprozesstechnik GmbH Recuperator burner with auxiliary heat exchanger
CN109945186A (en) * 2019-02-27 2019-06-28 华中科技大学 A kind of non-premix burner of microminiature with corrugated plating
US20210257959A1 (en) * 2020-02-18 2021-08-19 Modern Electron, Inc. Combined heating and power modules and devices
WO2024108039A1 (en) * 2022-11-16 2024-05-23 LightCell Inc. Apparatus and methods for efficient conversion of heat to electricity via emission of characteristic radiation
DE102022133136A1 (en) 2022-12-13 2024-06-13 Wind Plus Sonne Gmbh COMBUSTION ENGINE USING AND PRODUCING DIFFERENT FORMS OF ENERGY

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7196263B2 (en) * 2001-10-18 2007-03-27 Jx Crystals Inc. TPV cylindrical generator for home cogeneration using low NOx radiant tube burner
JP2005522629A (en) 2002-04-11 2005-07-28 エイ. ハーゼ,リチャード Water combustion technology-methods, processes, systems and apparatus for burning hydrogen and oxygen
CA2399673A1 (en) * 2002-08-23 2004-02-23 Alberta Research Council Inc. Thermophotovoltaic device
CA2444831A1 (en) * 2003-10-10 2005-04-10 Alberta Research Council Inc. Thermophotovoltaic device with selective emitter
WO2005048310A2 (en) * 2003-11-10 2005-05-26 Practical Technology, Inc. System and method for enhanced thermophotovoltaic generation
US7767903B2 (en) * 2003-11-10 2010-08-03 Marshall Robert A System and method for thermal to electric conversion
JP2005168125A (en) * 2003-12-01 2005-06-23 Hitachi Ltd Household distributed power supply system
US7557293B2 (en) * 2003-12-03 2009-07-07 National University Of Singapore Thermophotovoltaic power supply
US20060010867A1 (en) * 2004-07-19 2006-01-19 Shaw Peter A Individual cogeneration plant
US7863517B1 (en) * 2005-08-30 2011-01-04 Xtreme Energetics, Inc. Electric power generator based on photon-phonon interactions in a photonic crystal
US20080087315A1 (en) * 2006-10-13 2008-04-17 Aspen Systems, Inc. Thermoelectric Fan for Radiation-Based Heaters, and Methods Related Thereto
ITBO20070094A1 (en) 2007-02-20 2008-08-21 Scienza Ind Tecnologia S R L INTEGRATED THERMAL-PHOTOVOLTAIC SOLAR PANEL FOR THE PRODUCTION OF ELECTRICITY AND HOT WATER
EP2215404A1 (en) * 2007-09-21 2010-08-11 Wessex Incorporated Radiant tube
US8420928B2 (en) * 2008-02-14 2013-04-16 Ppg Industries Ohio, Inc. Use of photovoltaics for waste heat recovery
ITPI20080088A1 (en) * 2008-09-05 2010-03-06 Scienza Ind Tecnologia Srl SUPPORT AND METHOD TO INCREASE THE EFFICIENCY OF PHOTOVOLTAIC CELLS BY DIVING
US20110226308A1 (en) * 2010-03-18 2011-09-22 Yi Pang Solar energy hybrid module
US9893223B2 (en) 2010-11-16 2018-02-13 Suncore Photovoltaics, Inc. Solar electricity generation system
US9296288B2 (en) 2012-05-07 2016-03-29 Separation Design Group Llc Hybrid radiant energy aircraft engine
US8648249B1 (en) * 2012-08-08 2014-02-11 Renewable Power Conversion, Inc. Geo-cooled photovoltaic power converter
US20140124014A1 (en) 2012-11-08 2014-05-08 Cogenra Solar, Inc. High efficiency configuration for solar cell string
US9947820B2 (en) 2014-05-27 2018-04-17 Sunpower Corporation Shingled solar cell panel employing hidden taps
USD1009775S1 (en) 2014-10-15 2024-01-02 Maxeon Solar Pte. Ltd. Solar panel
US9780253B2 (en) 2014-05-27 2017-10-03 Sunpower Corporation Shingled solar cell module
US10090430B2 (en) 2014-05-27 2018-10-02 Sunpower Corporation System for manufacturing a shingled solar cell module
USD933584S1 (en) 2012-11-08 2021-10-19 Sunpower Corporation Solar panel
EP2994939A4 (en) * 2013-02-22 2017-02-15 Patrick K. Brady Structures, system and method for converting electromagnetic radiation to electrical energy
US11482639B2 (en) 2014-05-27 2022-10-25 Sunpower Corporation Shingled solar cell module
US11949026B2 (en) 2014-05-27 2024-04-02 Maxeon Solar Pte. Ltd. Shingled solar cell module
USD933585S1 (en) 2014-10-15 2021-10-19 Sunpower Corporation Solar panel
USD913210S1 (en) 2014-10-15 2021-03-16 Sunpower Corporation Solar panel
USD896747S1 (en) 2014-10-15 2020-09-22 Sunpower Corporation Solar panel
USD999723S1 (en) 2014-10-15 2023-09-26 Sunpower Corporation Solar panel
US10861999B2 (en) 2015-04-21 2020-12-08 Sunpower Corporation Shingled solar cell module comprising hidden tap interconnects
CN106663706B (en) 2015-08-18 2019-10-08 太阳能公司 Solar panel
US10673379B2 (en) 2016-06-08 2020-06-02 Sunpower Corporation Systems and methods for reworking shingled solar cell modules
CN109945182B (en) * 2019-02-27 2020-01-10 华中科技大学 Microminiature tail gas recirculation formula combustor

Family Cites Families (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3433676A (en) 1964-10-21 1969-03-18 Gen Motors Corp Thermophotovoltaic energy convertor with photocell mount
US3751303A (en) 1971-06-03 1973-08-07 Us Army Energy conversion system
NL7405071A (en) 1974-04-16 1975-10-20 Philips Nv LIGHT BULB WITH INFRARED FILTER.
US3929510A (en) 1974-05-22 1975-12-30 Us Army Solar radiation conversion system
US4045246A (en) 1975-08-11 1977-08-30 Mobil Tyco Solar Energy Corporation Solar cells with concentrators
US4069812A (en) 1976-12-20 1978-01-24 E-Systems, Inc. Solar concentrator and energy collection system
US4131485A (en) 1977-08-08 1978-12-26 Motorola, Inc. Solar energy collector and concentrator
US4180414A (en) 1978-07-10 1979-12-25 Optical Coating Laboratory, Inc. Concentrator solar cell array module
US4234352A (en) 1978-07-26 1980-11-18 Electric Power Research Institute, Inc. Thermophotovoltaic converter and cell for use therein
IT1119206B (en) 1979-10-05 1986-03-03 Fiat Ricerche THERMOPHOTOVOLTAIC CONVERTER
US4906178A (en) 1983-07-25 1990-03-06 Quantum Group, Inc. Self-powered gas appliance
US5356487A (en) 1983-07-25 1994-10-18 Quantum Group, Inc. Thermally amplified and stimulated emission radiator fiber matrix burner
US4976606A (en) 1983-09-02 1990-12-11 Tpv Energy Systems, Inc. Thermophotovoltaic technology
US4707560A (en) 1986-12-19 1987-11-17 Tpv Energy Systems, Inc. Thermophotovoltaic technology
US4746370A (en) 1987-04-29 1988-05-24 Ga Technologies Inc. Photothermophotovoltaic converter
US4776895A (en) 1987-06-02 1988-10-11 Quantum Group, Inc. Multiband emitter matched to multilayer photovoltaic collector
JPH0787251B2 (en) 1987-06-19 1995-09-20 東京瓦斯株式会社 Thermophotovoltaic generator
US5255666A (en) 1988-10-13 1993-10-26 Curchod Donald B Solar electric conversion unit and system
US5096505A (en) 1990-05-21 1992-03-17 The Boeing Company Panel for solar concentrators and tandem cell units
US5248346A (en) 1989-04-17 1993-09-28 The Boeing Company Photovoltaic cell and array with inherent bypass diode
US5217539A (en) 1991-09-05 1993-06-08 The Boeing Company III-V solar cells and doping processes
US5118361A (en) 1990-05-21 1992-06-02 The Boeing Company Terrestrial concentrator solar cell module
US5389158A (en) 1989-04-17 1995-02-14 The Boeing Company Low bandgap photovoltaic cell with inherent bypass diode
US5123968A (en) 1989-04-17 1992-06-23 The Boeing Company Tandem photovoltaic solar cell with III-V diffused junction booster cell
US5091018A (en) 1989-04-17 1992-02-25 The Boeing Company Tandem photovoltaic solar cell with III-V diffused junction booster cell
US5080724A (en) 1990-03-30 1992-01-14 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Selective emitters
US5044939A (en) 1990-10-18 1991-09-03 Dehlsen James G P Reversing linear flow TPV process and apparatus
US5403405A (en) 1992-06-30 1995-04-04 Jx Crystals, Inc. Spectral control for thermophotovoltaic generators
US5312521A (en) 1992-06-30 1994-05-17 Fraas Arthur P Compact DC electric power generator using low bandgap thermophotovoltaic cell strings with a hydrocarbon gas burner fitted with a regenerator
US5551992A (en) * 1992-06-30 1996-09-03 Jx Crystals Inc. Thermophotovoltaic generator with low bandgap cells and hydrocarbon burner
US5383976A (en) * 1992-06-30 1995-01-24 Jx Crystals, Inc. Compact DC/AC electric power generator using convective liquid cooled low bandgap thermophotovoltaic cell strings and regenerative hydrocarbon burner
US5512109A (en) 1992-06-30 1996-04-30 Jx Crystals, Inc. Generator with thermophotovoltaic cells and hydrocarbon burner
US5401329A (en) * 1992-06-30 1995-03-28 Jx Crystals, Inc. Thermophotovoltaic receiver assembly
US5439532A (en) * 1992-06-30 1995-08-08 Jx Crystals, Inc. Cylindrical electric power generator using low bandgap thermophotovolatic cells and a regenerative hydrocarbon gas burner
US5505789A (en) 1993-04-19 1996-04-09 Entech, Inc. Line-focus photovoltaic module using solid optical secondaries for improved radiation resistance
US5560783A (en) 1994-11-23 1996-10-01 The United States Of America As Represented By The Secretary Of The Army Thermophotovoltaic generator
US5601661A (en) 1995-07-21 1997-02-11 Milstein; Joseph B. Method of use of thermophotovoltaic emitter materials
US5616186A (en) 1995-09-18 1997-04-01 Jx Crystals Inc. Thermophotovoltaic electric generator using low bandgap photovoltaic cells with a hydrocarbon burner and enhanced catalytic infrared emitter
US5651838A (en) 1995-12-14 1997-07-29 Jx Crystals Inc. Hydrocarbon fired room heater with thermophotovoltaic electric generator
US5865906A (en) 1996-04-22 1999-02-02 Jx Crystals Inc. Energy-band-matched infrared emitter for use with low bandgap thermophotovoltaic cells
US5942047A (en) 1997-04-07 1999-08-24 Jx Crystals Inc. Electric power generator including a thermophotovoltaic cell assembly, a composite ceramic emitter and a flame detection system
US6218607B1 (en) 1997-05-15 2001-04-17 Jx Crystals Inc. Compact man-portable thermophotovoltaic battery charger
US6037536A (en) 1998-03-31 2000-03-14 Jx Crystals Inc. TPV fireplace insert or TPV indoor heating stove
US6232545B1 (en) 1998-08-06 2001-05-15 Jx Crystals Inc. Linear circuit designs for solar photovoltaic concentrator and thermophotovoltaic applications using cell and substrate materials with matched coefficients of thermal expansion
US6091018A (en) 1998-10-27 2000-07-18 Jx Crystals Inc. Three-layer solid infrared emitter with spectral output matched to low bandgap thermophotovoltaic cells
US6177628B1 (en) 1998-12-21 2001-01-23 Jx Crystals, Inc. Antireflection coated refractory metal matched emitters for use in thermophotovoltaic generators
US6235983B1 (en) * 1999-10-12 2001-05-22 Thermo Power Corporation Hybrid power assembly
US6198038B1 (en) * 2000-01-13 2001-03-06 Thermo Power Corporation Burner and burner/emitter/recuperator assembly for direct energy conversion power sources
US6271461B1 (en) 2000-04-03 2001-08-07 Jx Crystals Inc. Antireflection coated refractory metal matched emitters for use in thermophotovoltaic generators

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2012366A2 (en) * 2007-07-05 2009-01-07 Federico Pirovano Photovoltaic system with improved efficiency and increment method of the electrical energy production of at least a thermo-photovoltaic solar module
WO2010057479A3 (en) * 2008-11-21 2011-07-21 Matrix Gmbh Device for generating electricity
US20110265853A1 (en) * 2008-11-21 2011-11-03 Matrix Gmbh Device for generating electricity
US20170067634A1 (en) * 2014-02-21 2017-03-09 WS Wärmeprozesstechnik GmbH Recuperator burner with auxiliary heat exchanger
US10161632B2 (en) * 2014-02-21 2018-12-25 WS Wärmeprozesstechnik GmbH Recuperator burner with auxiliary heat exchanger
CN109945186A (en) * 2019-02-27 2019-06-28 华中科技大学 A kind of non-premix burner of microminiature with corrugated plating
US20210257959A1 (en) * 2020-02-18 2021-08-19 Modern Electron, Inc. Combined heating and power modules and devices
WO2024108039A1 (en) * 2022-11-16 2024-05-23 LightCell Inc. Apparatus and methods for efficient conversion of heat to electricity via emission of characteristic radiation
DE102022133136A1 (en) 2022-12-13 2024-06-13 Wind Plus Sonne Gmbh COMBUSTION ENGINE USING AND PRODUCING DIFFERENT FORMS OF ENERGY

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