Hi-Z Technology, Inc.

HZ-2 Thermoelectric Module

Produces 2.5 Watts at 3.3 Volts at Matched Load
Uses Bismuth Telluride Based Semiconductors
Solid State Conversion of Heat To Electricity
HZ-2 is presently in limited production, inquiries are invited.

Generate a highly reliable source of electrical power from any source of heat. For these and other applications:

POWER SUPPLIES

Convert any source of heat to a reliable supply of electrical power in remote locations.
Convert heat from the combustion of hydrocarbon fuels to electricity creating a reliable power supply for remote unmanned stations.
Small, portable power supply
To achieve 10 watts at 12 volts directly, 4 modules can be used
1 module with a DC/DC converter can also deliver 12 volts (or more) DC

SELF POWERED DEVICES

Portable Computers
Telecommunications
Process Control
Fans
Instrumentation

WASTE HEAT RECOVERY

Electrical Power Supply from Small Engine Exhaust
Industrial operations such as cement plants, refineries, glass manufacturing, foundries etc.
Other Heated Componenets

RENEWABLE ENERGY

Wood Burning Stoves
Geothermal
Solar Salt Ponds
Solar Concentrators

THE HZ-2 THERMOELECTRIC MODULE

The HZ-2 module consists of 97 thermocouples arranged electrically in series and thermally in parallel. The thermocouples consists of "Hot Pressed", Bismuth Telluride based, semiconductors to give the highest efficiency at most waste heat temperatures as well as high strength capable of enduring rugged applications. The bonded metal conductors enable the HZ-2 module to operate continuously at temperatures as highas 250°C (480°F) and intermittently as high as 400°C (750°F) without degrading the module.

While the HZ-2 is well suited for waste heat recovery it's reversible properties make it ideal as a thermoelectric cooler, especially for high temperature applications where sensitive electronic equipment must be cooled to below the ambient temperatures.

Properties of the 2Ŋ Watt Module, HZ-2
Physical Properties	Value	Tolerance
Width & Length	1.15" (2.90 cm)	ą0.01 (0.25)
Thickness (Special Order)	0.2" (0.508)	ą0.01 (0.25) ą0.002 (0.05)
Weight	13.5 grams	ą2 grams
Compressive Yield Stress	3 ksi (20 MPa)	minimum
Number of active couples	97 couples	----
Thermal Properties
Design Hot Side Temperature	230°C (450°F)	ą10 (20)
Design Cold Side Temperature	30°C (85°F)	ą5 (10)
Maximum Continuous Temperature	250°C (480°F)	----
Maximum Intermittent Temperature	400°C (750°F)	----
Thermal Conductivity*	0.024 W/cm*K	+0.001
Heat Flux*	9.54 W/sqcm	ą0.5
Electrical Properties (as a generator)*
Power**	2.5 Watts	minimum
Load Voltage	3.3 Volts	ą0.1
Internal Resistance	4.0 A	ą0.05
Current	0.8 Amps	ą1
Open Circuit Voltage	6.53 Volts	ą0.3
Efficiency	4.5 %	minimum

* At Design Temperatures
** At Matched Load, refer to the graphs for properties at various operating temperatures and conditions.

AVAILABLE OPTIONS:

DC-DC Converter
- input 1.5V - 15V
- output 15V (adjustable)
- 30 Watts
Heat Sink
- Fan Cooled
- Free Convection
- Water Cooled
Heat Transfer Grease
Ceramic, Electrically Insulating Wafers
Silicone, thermally conductive pads.

All statements, technical information and recommendations contained herein are based on tests we believe to be reliable, but the accuracy or completeness thereof is not guaranteed. Neither seller nor manufacturer shall be liable for any injury, loss or damage including but not limited to special, incidental or consequential damages arising out of the use or the inability to use the product. Before using, user shall determine the suitability of the product for his intended use, and user assumes all risk and liability whatsoever in connection therewith. No statement or recommendation not contained herein shall have any force or effect unless in an agreement signed by officers of seller and manufacturer.