Temperature Difference of Thermoelectric Module on PIC-Microcontroller

2014 ◽  
Vol 979 ◽  
pp. 417-420
Author(s):  
N. Sangwaranatee ◽  
T. Wongkampha ◽  
E. Kaseam ◽  
N.W. Sangwaranatee ◽  
W. Mekhum
Keyword(s):  
Electric Power ◽  
Temperature Difference ◽  
Direct Current ◽  
Electromotive Force ◽  
Electricity Generation ◽  
Thermoelectric Module ◽  
Thermoelectric Device ◽  
Thermoelectric Effect ◽  
Cooling Devices ◽  
Parallel Circuit

This research is the study of electric power generated by the temperature difference below 100 °C of thermoelectric effect (cooling devices), which gets power from direct current and the electromotive force from thermoelectric module. In this research, a testing kit was designed to collect the output of temperature difference on the thermoelectric device, and compared the level of electric power of various modules in 2 different circuits; series and parallel. The result of the study showed that the higher differential temperature increased the value of electricity generation. Also, the electrical connection of thermoelectric module had an effect on power generating. When using 2 modules for each circuit, the series circuit generated more power than the parallel circuit.

ZT Measurements of Thermoelements under Large Temperature Difference

2015 ◽  
Vol 1107 ◽  
pp. 716-721 ◽  
Author(s):  
Nadhrah Md Yatim ◽  
Gao Min
Keyword(s):  
Temperature Difference ◽  
Thermoelectric Materials ◽  
Figure Of Merit ◽  
Thermoelectric Module ◽  
Electrical Current ◽  
Thermoelectric Device ◽  
Large Temperature ◽  
Dimensionless Figure Of Merit ◽  
Conversion Performance ◽  
Thermal Conductivity Λ

The thermoelectric dimensionless figure-of-merit, ZT, which consists of the Seebeck coefficient, α, electrical resistivity, ρ and thermal conductivity, λ, is an important parameter that characterizes the energy conversion performance of thermoelectric materials and devices. Current techniques for determining ZT involve measurements these three properties individually or ZT directly, but all techniques are carried out under a small temperature difference (ΔT). In reality, a thermoelectric device generally operates under a much larger ΔT and with an electrical current flowing through the thermoelectric materials. A novel principle for ZT measurement has been proposed, which has the capability of measuring ZT values under a large ΔT and with an electrical current flowing through the samples. Although this technique has been proof experimentally using thermoelectric module, its implementation on thermoelement has proved to be very challenging due to low electrical resistance of the samples. In this paper, newly develop apparatus with a modified operating principle was proposed and carried out. The performance of this system was investigated using a standard n-type Bi2Te3sample. The results show that the system has a repeatability of <10% and an accuracy of 13-32%. Investigation on single materials structures showed that there were noticeable differences between a small and a large ΔT, which can be attributed to the Thomson effect and changes in ρλ values.

scholarly journals Electromotive Force Generated in All Materials under Temperature Difference

2021 ◽  
Author(s):  
Dong-il Song
Keyword(s):  
Magnetic Field ◽  
Kinetic Energy ◽  
Electric Current ◽  
Temperature Difference ◽  
Electromotive Force ◽  
Thermoelectric Effect ◽  
Radio Waves ◽  
Temperature Differential ◽  
Electric Resistance ◽  
Thermoelectric Effects

Abstract In this research, we investigate the thermoelectric effects of general materials. The results of this showed that an electromotive force was generated under a temperature difference between two points in materials. As no material has infinite electric resistance, an electromotive force is expected to be generated under a temperature difference in all materials. In conclusion, the thermoelectric effect generates an electromotive force. This electromotive force causes an electric current to flow, thereby generating a magnetic field.This magnetic field generates the Earth's magnetic field, triboelectricity, sunspots, and kinetic energy of celestial bodies.This temperature differential electromotive force also generates lightning and creates an ionosphere that reflects radio waves.

scholarly journals Electromotive Force Generated in All Materials under Temperature Difference

2021 ◽  
Author(s):  
Dong-il Song
Keyword(s):  
Magnetic Field ◽  
Kinetic Energy ◽  
Temperature Difference ◽  
Electromotive Force ◽  
Thermoelectric Effect ◽  
Radio Waves ◽  
Temperature Differential ◽  
Electric Resistance ◽  
Thermoelectric Effects ◽  
Celestial Bodies

Abstract In this research, we investigate the thermoelectric effects of general materials. The results of this showed that an electromotive force was generated under a temperature difference between two points in materials. As no material has infinite electric resistance, an electromotive force is expected to be generated under a temperature difference in all materials. In conclusion, the thermoelectric effect generates an electromotive force. This electromotive force causes an electric current to flow, thereby generating a magnetic field. This magnetic field generates the Earth's magnetic field, triboelectricity, sunspots, and kinetic energy of celestial bodies. This temperature differential electromotive force also generates lightning and creates an ionosphere that reflects radio waves.

Efficiency of Microcombustion System with Thermoelectric Generator Combined with Countercurrent Heat Exchanger

2016 ◽  
Vol 685 ◽  
pp. 422-426
Author(s):  
Nikolai Belyakov ◽  
Igor Terletskii ◽  
Sergey Minaev ◽  
Sudarshan Kumar ◽  
Kaoru Maruta
Keyword(s):  
Heat Exchanger ◽  
Electric Power ◽  
Thermoelectric Generator ◽  
Combustion Products ◽  
Thermoelectric Device ◽  
Combustion Heat ◽  
Thermoelectric Element ◽  
Fresh Mixture ◽  
A Value ◽  
New System

A new system for converting combustion heat into electric power was proposed on the basis of countercurrent burner with thermoelectric element embedded in a wall separating incoming fresh mixture and combustion products. The wall serves as heat exchanger between combustion products and the fresh mixture. Numerical simulations showed that almost whole combustion heat may be transferred through the thermoelectric element in such system and the total thermal efficiency attained a value close to the conversion efficiency of the thermoelectric device itself.

Performance Test of Electricity Generation Utilizing Vortex Induced Vibration

2011 ◽  
Author(s):  
Ryota Iiyoshi ◽  
Masahiro Kamijyo ◽  
Shuichi Yamada ◽  
Mizuyasu Koide ◽  
Tsutomu Takahashi ◽  
...  
Keyword(s):  
Electric Power ◽  
Vibration Amplitude ◽  
Electricity Generation ◽  
Performance Test ◽  
Mechanical Energy ◽  
Water Channel ◽  
Open Surface ◽  
Velocity Range ◽  
Vortex Induced Vibration ◽  
Wide Range

The Karman vortex induced vibration (KVIV) is observed over a wide range of conditions, and has been regarded as a negative phenomenon until now since it has caused many accidents. Therefore a lot of researches have been conducted to predict and to avoid it. Recently, however, KVIV is regarded as a process to convert energy of natural flows into mechanical energy, and techniques for electricity generation utilizing it are proposed. The electric power of this method is smaller than that of wind and water turbine generations, but this method has possibility to become a smaller and more maintenance-free apparatus than rotary machines. In earlier works, we found that the trailing vortex shed periodically from a cruciform two-circular-cylinder system, and that it induces a cross flow vibration on the upstream cylinder (TVIV) over a wide velocity range, which becomes broader by replacing the downstream cylinder by a strip-plate. Because of this character, an electricity generator utilizing TVIV should be effectively applied to rivers of which velocity usually varies largely. The purpose of this work is to develop a technique to generate electricity utilizing TVIV in water flow. Experiments using a water tunnel and an open-surface water channel are conducted to know conditions of the maximum electric power and to test the performance in a river. The optimum gap-to-diameter ratio is 0.22 since the cylinder vibration amplitude is largest. The optimum resistance of the circuit is the value which makes the virtual damping due to electricity generation nearly equal to the structure damping. The performance test in the water channel shows that the open surface and the turbulence in flow have little influences on the cylinder vibration amplitude and the synchronization velocity range of KVIV. However, TVIV is not observed, maybe because of the large aspect ratio.

Operation of the Siemens SOFC Generators CHP100 and SFC5 in a Mechanical Factory

2008 ◽  
Author(s):  
Vittorio Verda ◽  
Gianmichele Orsello ◽  
Gianni Disegna ◽  
Ferrante Debenedictis
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Electric Power ◽  
Electricity Generation ◽  
Solid Oxide ◽  
Energy Requirements ◽  
Oxide Fuel ◽  
Promising Technology ◽  
Commercial Scale

Solid Oxide Fuel Cells (SOFCs) are a promising technology for distributed electricity generation and cogeneration. Most of the installations of SOFC are small size fuel cells (of the order of decades of watts or few hundred watts) in laboratories. There are very few installations of commercial scale SOFC plants. In this paper the operating results obtained with two SOFC plants are presented. These plants, whose nominal electric power is 100 kW and 5 kW respectively, produce heat and power to contribute to the energy requirements of the Turbocare factory in Torino, Italy.

Electricity Generation From a Compound Parabolic Concentrator Coupled to a Thermoelectric Module

2008 ◽  
Author(s):  
Chigbo A. Mgbemene ◽  
John Duffy ◽  
Hongwei Sun ◽  
Samuel O. Onyegegbu
Keyword(s):  
Thermal Energy ◽  
Electricity Generation ◽  
Thermoelectric Module ◽  
Experimental Setup ◽  
The Sun ◽  
Compound Parabolic Concentrator ◽  
Initial Cost ◽  
Model Equations ◽  
The Cost

Generating electricity from the sun using a combination of a compound parabolic concentrator (CPC) and a thermoelectric module (TEM) has been studied. The system was modeled, analyzed and tested. The model equations and the methodology used for the demonstration are presented and experimentally validated. The experimental setup comprised a manually fabricated CPC placed on a commercially available TEM. The results showed that the combination can generate and sustain enough power for a small appliance. It was also shown that there is enough dissipated heat from the system which could be harnessed for additional uses. The cost is still high, about $35/Wp, but if credit is given for the thermal energy the initial cost goes down.

A Power Interruption Technique for Investigation of Temperature Difference in Stabilized Low Direct-Current Arc Burning in Pure Argon on Atmospheric Pressure

2008 ◽  
Vol 25 (4) ◽  
pp. 1376-1379 ◽  
Author(s):  
M. M Kuzmanović ◽  
J. J Savović ◽  
D. P Ranković ◽  
M Stoiljković ◽  
A Antić-Jovanović ◽  
...  
Keyword(s):  
Temperature Difference ◽  
Direct Current ◽  
Atmospheric Pressure ◽  
Pure Argon
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