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HZ-20 Thermoelectric Module

Uses Bismuth Telluride Based Semiconductors
Solid State Conversion of Heat To Electricity

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.
• Cathodic Protection
• Telecommunications

SELF POWERED DEVICES

• Heaters
• Furnaces
• Water Heaters
• Barbecues
• Vehicle Engine Heaters

WASTE HEAT RECOVERY

• Engine exhaust powered Alternator Replacement
• Industrial operations such as cement plants, refineries, glass manufacturing, foundries etc...
• Flare Gas

RENEWABLE ENERGY

• Wood Burning Stoves
• Incinerators
• Solar Salt Ponds
• Geothermal
• Solar Concentrators

THE HZ-20 THERMOELECTRIC MODULE

The HZ-20 module consists of 71 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-20 module to operate continuously at temperatures as high as 250°C (480 F) and intermittently as high as 400°C (750 F) without degrading the module.

While the HZ-20 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 13 Watt Module, HZ-20
Physical Properties	Value	Tolerance
Width & Length	2.95" (7.5 cm)	±0.01 (0.25)
Thickness (Special Order)	0.2" (0.508)	±0.01 (0.25) ±0.002 (0.05)
Weight	115 grams	±3 grams
Compressive Yield Stress	10 ksi (70 MPa)	minimum
Number of active couples	71 couples	----
Thermal Properties
Design Hot Side Temperature	230°C (450°F)	±10 (20)
Design Cold Side Temperature	30°C (85°F)	±5 (10)
Maximum Continuous Temperature	250°C (480°F)	----
Minimum Continuous Temperature	none	----
Maximum Intermittent Temperature	400°C (750°F)	----
Thermal Conductivity*	0.024 W/cm*K	+0.001
Heat Flux*	9.54 W/sqcm	±0.5
Electrical Properties (as a generator)*
Power**	19 Watts	minimum
Load Voltage	2.38 Volts	±0.1
Internal Resistance	0.3 Ohm	±0.05
Current	8 Amps	±1
Open Circuit Voltage	5.0 Volts	±0.3
Efficiency	4.5 %	minimum

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

Module properties can be calculated at any temperature using our performance calculator:

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.