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Sukhum Physics Technology Institute


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Thermoelectric Conversion. Collaboration Aspects.



Design of systems of heat energy thermoelectric conversion from different heat sources into direct current electric energy.

Systems of thermoelectric conversion of heat energy into direct current electricity for different heat sources and different systems of heat intake.

Thermoelectric heat pumps, (cooling modules made of high-efficiency thermoelectric alloys).

Design and manufacturing of thermoelectric batteries (cascade, with segmented legs, with different height doped legs, and also radial-ring batteries of the whole temperature range).

Vacuum engineering: cleansing of primary components (distillation, degassing, crystal pulling, etc.), fusion of thermoelectric alloys (ampule, inactive gas pressurized, hardening from liquid state, zone melting, mechanoactivating, etc.).

Powder metallurgical processing, grain size distribution, thermal vacuum annealing of briquettes, etc.

Hot vacuum moulding of powdered materials (briquettes, billets).

Machine processing, galvanics, vacuum, plasma-ion deposition, magnetron sputtering, etc.

Vacuum brazing, diffusion welding.

Antisublimation protection (frit preparation, application and burn-off of special glass enamels), application and sintering of organosilicon enamels

Plasma electric-arc deposition of structural and insulation layers.

The whole cycle of heat and electrophysical check-out testing of thermoelectric alloys and finished items.

Facilities: laboratories, equipment, tooling, device units, benches.

There are currently six laboratories functioning in the thermoelectric conversion unit of "ERA-SPhTI" Ltd.:

Metal conversion lab, assembly lab, machine processing and operational adjustment of products lab, various coating application techniques lab, thermophysical checkout testing of products and machining section, technical and engineering support lab, inspection bureau. In SPhTI right from the start we have always practised complete cycle production: from primary components (chemical elements) to finished goods.

We mostly work on non-standard self-engineered equipment:

- machines for vacuum distillation, degassing, zone melting, single-crystal pulling;

- machines for thermoelectric alloy synthesis, ampule synthesis, inactive gas pressure synthesis, liquid quenching, mechanoactivatimg synthesis;

-equipment for powder metallurgical processing;

high-temperature vacuum presses;

- machines for thermal vacuum annealing;

- equipment for preparation of high-temperature glass enamels, tunnel-type furnaces for their burn-off at protected parts and units of the item;

- high-temperature vacuum systems for brazing;

- diffusion welding systems;

- systems for plasma-ion deposition, magnetron sputtering, thermal vacuum sputtering;

- systems complex for thermo-and electrophysical testing of thermoelectric alloys, thermoelectric legs, finished goods;

- systems for XRD and phase-shift analyses;

- systems for mass-spectrometric analysis.

Cooperation Possibilities:

Joint research, process development, design engineering, manufacturing of items with the use of non-standard equipment of "ERA-SPhTI" LTD.

Automated system for material thermoelectric property measurement: thermopower α,
electrical resistivity ρ, thermal conductivity coefficient χ and thermoelectric
thermoelectric figure of merit Z within the temperature range from room temperature to ~ 800÷1000îÑ.

Measuring method - steady-state, absolute with the use of thermal shields and fill insulation from foam-fireclay bricks.Inaccuracy of measurement below ±4÷7%; Test specimen dimensions: cross-section ~10×10 ìì2, height 12÷20ìì, , there is a possibility of using specimen with cross-section of 8×8ìì2 to 10×10 ìì2 .

Automated control system carries out the required thermal conditions setting, conduct of primary specifications measurements, parameter determination and shift to the following range of temperature measurements.

Operating temperature range can be extended up to 1100÷1200îÑ on the structure change of some units.


Finished goods:

There are several complete space-based thermoelectric power generators (TEG) BUK with electrical output of 3 kWt, which have undergone the whole cycle of testing being a part of liquid metal circuit, at the temperature of hot end 725°C, at cold end -375°C; thermopiles TEG BUK; aerodynamic heating sensors; thermopiles for space-based RITEG (Radioisotope thermoelectric generator). Customized thermopile production possible.

Note: If there's a change in temperature difference at TEG junctions, the output capacity and voltage rate change in proportion with the temperature difference.

Thermopiles


Aerodynamic heating sensors

Thermoplile for RITEG " Lemon"

Two-circuit unit RITEG "VYSOTA"

Microunits

Film-type thermopile

Thermopile RITEG "EFIR"

Dual-channel thermoplile RITEG "Suschnost"

Two-circuit thermopile RITEG "Gong"

Thermoelectric cooling units


Thermopiles integrated into Nuclear Thermopower Units


Thermopile unit "BUK"

Two-circuit thermopile

Tubular unit "Gamma"

Thermogenerator "Kostyor"

Tubular units integrated into Nuclear Thermopower Units for operation on organic fuel

Ring-type thermopiles

Circular thermopiles


Thermopiles for RITEGs


1. " LEMON"

2. Two-circuit unit "VYSOTA"

3. Converter "SUSCHNOST"

4. Two-circuit unit "ZHIZN"

5. "ORION 14-K"

6. Converter "GONG"

7. Converter "BETA"




Thermopiles with reactor source


1. Thermopile unit "BUK"

2. Thermopiles "BUK"

3. Thermopile "BUK"




Experimental four-circuit unit





Portable Energy Source "KOSTYOR"

Purpose:

Conversion of open fire heat energy, furnace fire heat, etc. into dc electric power.

Field of Use:

Power supply for electric and radio equipment in the field: radio stations with power below 35 Wt, portable TVs, radio receivers, electric razors, players, daylight lamps, battery charging, etc.

Technical Features:

1. Fuel consumption (dry firewood), kg/hour…………… - 2,5…3

2. Output power, Wt…………………………………………… - 40

3. Static converter output voltage, V……………… - 9, 12, 60, 100

4. Build-up time, min……………………………………………. - 10

5. Weight (dry), kg……………………………………………….. - 7

6. Warranty life, years …………………………………………….-5




Portable Energy Source "Comfort"

Purpose:

Conversion of open fire heat energy, furnace fire heat, etc. into dc electric power.

Field of Use:

Power supply for electric and radio equipment in the field: radio stations with power below 110 Wt, portable TVs, radio receivers, electric razors, players, daylight lamps, battery charging, etc.

Technical Features:

1. Fuel consumption (dry firewood), kg/hour……………..… - 2,5…3

2. Output power, Wt…………………………………………… 60 - 110

3. Static converter output voltage, V………………..… - 9, 12, 60, 100

4. Build-up time, min………………………………………………. - 10

5. Weight (dry), kg……………………………………………….. - 10

6. Warranty life, years …………………………………………….-5







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