Midnight Sun TPV StoveScale Up for Combined

Heat & Power for the Home

Dr. Lewis Fraas

Low Cost GaSb IR Cells & Circuits

IRPower

Beaming

Home Combined

Heat & Power

IndustrialCombined

Heat & Power

Midnight SunTPV Fireplace

Insert

LightweightBattery

Replacement

LightweightQuiet Military

Power

Business Plan JX Crystals with IR PV Cell Core Plans to

Launch Midnight Sun TPV Co

Primary Achievements• IR sensitive III-V cells• Pilot production of GaSb IR cells• Spectral Control• Midnight Sun™ TPV Stove

JX Crystals TPV Demonstrator

TPV Circuit rolls up into cylinder with fins added for cooling Oil Lamp with TPV

cylinder operates radio

Integrated IR Cell & Circuit Production at JXC

GaSb IR Crystals, wafers, cells and circuits made at JXC

New Infrared Cell Is Enabling for TPVCombined Heat and Electric Power for the Home

With spectra from man-made heat source, new IR cell responds in red region whereas standard silicon solar cell responds only

in yellow region.

Example Application (a) CHP TPV Stove

Man-Portable Soda Can Sized 20 W TPV Generator

Note the simplicity:A cylinder with fuel inlet tube and +/- DC outputand fans at either end.

145 Wh / kg942 Wh / kg

5.3 hrs at 30 W = 160 Wh35 hours / 700 Wh35 hours at 20 W

1.1 kg0.94 kg0.74 kg0.2 kg

4.3” x 1.6” x 4.9”7” x 8” x 3.5”3.5” diameter x 8”3.5” diameter x 8”

Li-ion BatteryTPV Total*Butane CartridgeTPV Power Source

The Key is 10% overall TPV Efficiency

In comparison to the Li-ion battery, the TPV power system is lighter, has 6.5 times higher specific energy, operates 7 times longer, and is very easily refueled.

Example Applications (b) Military

TPV Military Applications

• Small portable lightweight 20 W TPV battery replacement with adjacent fuel cylinder.

• Raven UAV with two 50 W lightweight quiet TPV power cylinders for electric power for extended flight duration.

Evolving the TPV Stove to Larger Residential Market Development of a TPV integrated boiler

Residential BoilerTPV Retrofit for Self Power or CHP

(JXC TPV Circuits)

(JXC IR Emitter)

Cooperation with K. Qiu at CANMET Energy Technology CentreOttawa, Natural Resources Canada

JXC MidnightSun TPV Stove Scale-Up to TPV Self Powered Boiler and then TPV CHP Boiler

TPV Performance Projections

1.3 kW26 kW*** 5%0.8 1000 cm2

61%1400 C

Matched emitter

TPV CHP

695 W15.4 kW4.5%0.8 1000 cm2

61%1250 C

Matched emitter

TPV CHP

342 W8.8 kW3.9%0.7500 cm2

61%1250 C

Matched emitter

TPV Boiler

122 W4.4 kW2.8%0.5250 cm2

61%1250 C

Matchedemitter

TPVStove

122 W8.8 kW1.4% **0.5250 cm2

28%1250 C

SiCemitter

TPV Stove

TPV ElectricPower

FuelThermal Burn Rate

ElectricSystem *Efficiency

View Factor

TPV Circuit Area

Spectral Efficiency

VariableTPV System

* In all cases, cell efficiency =30%; Fuel Chemical to Radiation Efficiency = 33%** Example: 0.28x0.5x0.3x0.33 = 1.4%*** 26 kW thermal = 89,000 BTU/hr