Compact Water-Cooled Thermoelectric Generator (TEG) Based on a Portable Gas Stove

Lv, Hongkun; Li, Guoneng; Zheng, Youqu; Jiangen, Hu; Li, Jian

doi:10.3390/en11092231

Cited by 12 publications

(7 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Lv et al [31] used a similar analytical model to predict the output power of a TEG, obtaining a value 18.6% higher than the real value, while in the present work this value was 175.4% higher than the actual output power. However, the temperature difference was 44.1% lower than the used in this work, which is relevant since the higher the temperature gradient used, the greater are the errors added to the calculations, as evidenced by Orr et al, who presented a simplified analytical method to describe TEGs, in which output power and efficiency curves started to deviate at higher temperature gradients [32].…”

Section: Resultsmentioning

confidence: 56%

Analytical and Numerical Study for the Determination of a Thermoelectric Generator’s Internal Resistance

et al. 2019

View full text Add to dashboard Cite

The conversion of residual thermal energy into electricity using TEGs (Thermoelectric Generators) arises as a promising technological alternative for increasing energy efficiency and power generation. In order to optimize the performance of TEGs, it is known that the maximum output power is obtained by matching the impedances between the TEG and the connected load. Therefore, the objective of this work is to present the development of a numerical and a simplified analytical model to determine the internal resistance (R int ) and predict the open circuit voltage, charge voltage, current and power values of TEGs. The models have used as reference the thermoelectric module TEHP 1263-1.5 (Thermonamic), with the analytical one being based on the classical theory of electrical circuit analysis and, for the numerical one, a three-dimensional geometric model was developed and the set of equations were solved in the COMSOL Multiphysics ® tool by the finite element method. The R int obtained by the analytical and numerical models were, respectively, 3.157 Ω and 6.027 Ω, and the value supplied by the supplier is 3.154 Ω. Therefore, the analytical model is indicated as a reference to estimate R int of the TEG, allowing optimizing its use by choosing the load resistance that will result in the maximum power.

show abstract

Section: Resultsmentioning

confidence: 56%

Analytical and Numerical Study for the Determination of a Thermoelectric Generator’s Internal Resistance

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Water cooling is by far the most widely adapted cooling method in most thermal systems, and TEG is no exception [64]. The high heat capacity of water and its abundant availability make it more attractive Although a substantial amount of power will be used to move the water, this parasitic loss will be accounted for when defining the total efficiency of the device.…”

Section: Water Coolingmentioning

confidence: 99%

“…The maximum efficiency of 4.44% at the power output of 146.5 W was achieved with a coolant at 30 • C. In the case of STEG, forced water cooling was researched extensively. A microchannel heat sink was designed to cool the individual thermopiles and was able to generate 4.9 W at electrical efficiency of 2.9% when the temperature difference was 109 • C [64]. Yazawa [70] was able to achieve 1% convection efficiency by using ambient water and a Fresnel lens.…”

Section: Forced Convectionmentioning

confidence: 99%

The Design of a Thermoelectric Generator and Its Medical Applications

Kumar

Babu

Subramanian

et al. 2019

Designs

View full text Add to dashboard Cite

Growing energy demands are driving people to generate power in every possible way. New energy sources are needed to plug the energy gap. There is a growing interest in distributed energy generation due to its remarkable advantages such as flexibility, reliability, adaptability and minimal transmission losses. Thermoelectric generators (TEGs) are one such distributed power source that relies on thermal energy for electricity generation. The current review focusses on the design and optimization of TEGs to maximize the power output from the available thermal sources. The basic principle of thermoelectricity generation and suitable architecture for specific applications are explained with an overview of materials and manufacturing processes. Various cooling techniques to dissipate heat from the cold side and their influence on overall efficiency are reviewed in this work. Applications of TEGs for powering biomedical sensors have been discussed in detail. Recent advancements in TEGs for various implantable devices and their power requirements are evaluated. The exploitation of TEGs to generate power for wearable sensors has been presented, along with published experimental data. It is envisioned that this study will provide profound knowledge on TEG design for specific applications, which will be helpful for future endeavours.

show abstract

“…Electrical generation by thermoelectricity has many fields of application [20]. TEGs were used as reliable sources of electrical energy in extreme environments [21] and in remote areas for off-grid micro generation [22]. Very recently, novel designs increased the energy efficiency of solar TEGs that include solar concentrators with flat-plate micro-channel heat pipes [23].…”

Section: Thermoelectric Generatorsmentioning

confidence: 99%

Effects of Design Parameters on Fuel Economy and Output Power in an Automotive Thermoelectric Generator

Comamala

Cózar

Massaguer³

et al. 2018

Energies

View full text Add to dashboard Cite

The need for more sustainable mobility promoted research into the use of waste heat to reduce emissions and fuel consumption. As such, thermoelectric generation is a promising technique thanks to its robustness and simplicity. Automotive thermoelectric generators (ATEGs) are installed in the tailpipe and convert heat directly into electricity. Previous works on ATEGs mainly focused on extracting the maximum amount of electrical power. However, the back pressure caused by the ATEG heavily influences fuel consumption. Here, an ATEG numerical model was first validated with experimental data and then applied to investigate the effects that modifying the main ATEG design parameters had on both fuel economy and output power. The cooling flow rate and the geometrical dimensions of the heat exchanger on the hot side and the cold side of the ATEG were varied. The design that produced the maximum output power differed from that which maximized fuel economy. Back pressure was the most limiting factor in attaining fuel savings. Back pressure values lower than 5 mbar led to a < 0.2% increase in fuel consumption. In the ATEG design analyzed here, the generation of electrical output power reduced fuel consumption by a maximum of 0.5%.

show abstract

Compact Water-Cooled Thermoelectric Generator (TEG) Based on a Portable Gas Stove

Cited by 12 publications

References 46 publications

Analytical and Numerical Study for the Determination of a Thermoelectric Generator’s Internal Resistance

Analytical and Numerical Study for the Determination of a Thermoelectric Generator’s Internal Resistance

The Design of a Thermoelectric Generator and Its Medical Applications

Effects of Design Parameters on Fuel Economy and Output Power in an Automotive Thermoelectric Generator

Contact Info

Product

Resources

About