Tecteg Mfr. is becoming a major player in the field of Thermoelectric POWER GENERATION using the SEEBECK EFFECT. The pay back on thermoelectric power/watt is becoming more economical , especially if the thermal recovery can be used for supplementary heating. Far faster than any other green technology presently, even with the smaller efficiencies that presently are available with today’s materials.
The payback can be 2 fold:
Power and thermal energy can be recovered from an application which means that systems that utilize both utilities can pay for themselves in less that 3 years. No other green technology has that ROI economics.
As well the scavenging space design units work at very small temperature differences which make them ideal heat scavengers for wireless power generation to run sensors or charge rechargeable batteries for autonomous systems.
The draw back to the TEG POWER technology is also it’s strength. Because the power densities are very large, small units can be manufactured at produce power as a base load unit. 10 Watts IPOWERTOWER doesn’t seem like much but run that 24/7 for 365 days straight as a base load system and you can run a whole camp lodge of the power it produces (7200wh) or 7.2Kwh x 12 months!
As well, the output is 24 hours per day as long as there is an active heat source and a cold side. So, actual power output can be 6 -7 times what a 300 watt solar array could produce. As a result of continuous power a small battery replaces a large battery bank saving hundreds of Dollars. Thousands on larger systems. One other fact: batteries don’t like to be drawn down which is precisely what happens when using solar. Batteries like to be trickle charged constantly. If Thermoelectric Power Charging is used Batteries last 3 times the life of solar charged batteries , Saving potentially Thousand of Dollars.
What is needed to make the technology cheaper to operate is waste heat, which by the definition is free. The key words being “WASTE HEAT”. Heating and cooking are part of every day needs in parts of the world. Why not produce power for lighting, Smartphone charging , Radio, TV, etc…
Thermoelectric Power Generation from Waste Heat
Presently, Bi2Te3 is one of the most efficient at room temperature. Material such as PbTe have also been used in temperatures of 400 to 600° C (875-1112°F)
Both Bi2Te3 and PbTe are mature material. Their characteristics and performance are well documented and have been used extensively in commercial application. Tecteg mfr. Has been building and designing systems for the past 25 year. We have extensive design and component inventories all custom built by us to assist any company with their TEG power project.
PbTe properties are better suited to temperatures above 450°C.
Bi2Te3 (Bismuth Telluride) thermoelectric material is the only low temperature material widely available in thermoelectric power module form. PbTe,CMO, ZnSb are available as well but for higher temperature appliactions.
and will compliment the list of chemistries that will be available in the future.
There are other Thermoelectric TEG power materials using the SEEBECK EFFECT that hold promise in the thermoelectric Generation field.
These include but not limited to:
Characteristics of other various Thermoelectric Materials for Power Generation
The four Thermoelectric power materials above are of particular interest as they are abundant materials and less expensive compared to Te(Tellurium) based semiconductors and have equal or Greater SEEBECK EFFECT efficiencies.