T HERMOELECTRIC G ENERATOR TEG Joanna Kubczak Agnieszka Smukała Marta Weiss

T HE MAIN IDEA OF THE INVENTION Is based on the phenomenon of Seebeck - formation of thermoelectric power in a closed circuit consisting of two different metals, where the metal contact areas are at different temperatures, and therefore it is a direct result of transformation of the temperature difference between two points of the body for electrical connection.

P RINCIPLES OF INVENTION : Termogenerator works by Seebeck effect, the creation of thermoelectric power as a result of the applied temperature difference. One of the most important features is that one side of the thermocouple is the cooling / heating system, which allows to recover power from the sole source of heat / cold. It is also important that it can be operated under different conditions and even under water or other liquid. Another interesting property of the invention is the possibility of the occurrence of the opposite effect that is, the temperature difference at the ends of the thermocouple due to the applied current. This phenomenon is called the phenomenon of Petiera and is opposite to the Seebeck effect. The above features can be very useful for many potential applications.

A PPLICATION : Cars and other automobiles produce waste heat (in the exhaust and in the cooling agents). Harvesting that heat energy, using a thermoelectric generator, can increase the fuel efficiency of the car. In addition to in automobiles, waste heat is also generated in many other places, such as in industrial processes and in heating (wood stoves, outdoor boilers, cooking, oil and gas fields, pipelines, and remote communication towers). Again, the waste heat can be reused to generate electricity. It can be used to illuminate the technical premises and / or maintain the performance of various types of equipment that do not require high currents (eg, meters, lights, Wi-Fi hot-spot, etc.). It is also possible to use the residential premises as an additional source of electrical power (eg lighting in the bathroom, gas detectors and / or carbon monoxide, burglary alarm, etc.).

S TRUCTURE :

TEG: example in labolatory

S CHEME :

R ESULTS :

C ALCULATION : T = 50 ⁰ C QHeat=C*ρ*QV* [(Tout - Tin) - Tdifference] For example R [Ω]=5, T=50 ⁰ C QHeat=4184*1000*(0,026/3600)*((17,7-11)-5)= 51,37 [W]

GRAPH:

CALCULATION: T = 260 ⁰ C QHeat=C*ρ*QV*(Tout - Tin) For example R [Ω]=5, T=260 ⁰ C QHeat=4184*1000*(0,054/3600)*(16,2-15,4)= 50,21 [W]

GRAPH:

C ONCLUSION : Ri resistance increases as the temperature rises. For T=50 ⁰ C -> Ri = 11 Ω and for T = 260 ⁰ C -> Ri=15,8 Ω. More profitable is carry on process at 260 ⁰ C, because efficiency received is much higher than other temperatures. If the current is higher, than the voltage is smaller. It is important that the cooling water temperature was as low as possible to get the best Seebeck effect.