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Relevant bibliographies by topics / Thermoelectric Heat Pump

Academic literature on the topic 'Thermoelectric Heat Pump'

Author: Grafiati

Published: 10 December 2022

Last updated: 28 January 2023

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Journal articles
Dissertations / Theses
Book chapters
Conference papers

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Journal articles on the topic "Thermoelectric Heat Pump"

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Chen, L., J. Li, and F. Sun. "Heat transfer effect on optimal performance of two-stage thermoelectric heat pumps." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 221, no. 12 (December 1, 2007): 1635–41. http://dx.doi.org/10.1243/09544062jmes740.

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A model of two-stage semiconductor thermoelectric heat pumps with external heat transfer and internal irreversibility is built. Performance of the heat pump with Newton's heat transfer law is analysed and optimized using the combination of finite-time thermodynamics and non-equilibrium thermodynamics. The analytical formula about heating load versus working electrical current, and the coefficient of performance (COP) versus working electrical current are derived. For the fixed total number of thermoelectric elements, the ratio of number of thermo-electric elements of top stage to the total number of thermoelectric elements is also optimized for maximizing the heating load and the COP of the thermoelectric heat pump. The effects of design factors on the performance are analysed.

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Ficker, T. "Simplified Peltier heat pump." European Journal of Physics 43, no. 4 (May 20, 2022): 045102. http://dx.doi.org/10.1088/1361-6404/ac6a8f.

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Abstract A simplified version of the Peltier heat pump has been described and its prototype subjected to experimental testing. The core of the prototype consists of the thermoelectric module TEC1-12714S which is commonly available on the electro market. The simplified Peltier heat pump has shown effective functioning within the temperature difference of ΔT = 20 °C between the cold and hot sides of the used module. Although the presented prototype of the Peltier heat pump does not seem to be practical in thermal building technology, its utilization for illustrating the principle of thermoelectric effect within physical lectures or as an experimental device for measuring its coefficient of performance in student laboratories may be useful.

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Xiao, Sheng Hao, Qing Hai Luo, and Gao Feng Li. "Utilizing Thermoelectric Heat Pump to Heat Recovery of Shower Waste Water." Applied Mechanics and Materials 521 (February 2014): 757–61. http://dx.doi.org/10.4028/www.scientific.net/amm.521.757.

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The discharge of the shower wastewater is not only caused energy waste, but also caused a certain thermal pollution to the environment. The thermoelectric heat pump system, compared with the electric heating device, has a more effective output of heat energy. By recycling heat of shower wastewater, it can be both energy-saving and environmental. With a growing ratio of the energy consumption of hot water, the thermoelectric heat pump system may give us a new perspective in the area of waste heat recovery and energy efficiency in buildings.

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Luo, Qing-hai, Guang-fa Tang, and Nian-ping Li. "Development of Thermoelectric Heat Pump Water Heaters." Journal of Asian Architecture and Building Engineering 4, no. 1 (May 2005): 217–22. http://dx.doi.org/10.3130/jaabe.4.217.

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Semenyuk, Volodymyr. "Thermoelectric Heat Pump as a Thermal Cycler." Journal of Electronic Materials 39, no. 9 (June 11, 2010): 1510–15. http://dx.doi.org/10.1007/s11664-010-1281-6.

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Wehowski, Manuel, Jürgen Grünwald, Christian Heneka, and Dirk Neumeister. "Thermoelectric heat pump for Lithium-ion batteries." ATZ worldwide 115, no. 11 (October 15, 2013): 40–45. http://dx.doi.org/10.1007/s38311-013-0128-1.

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Riffat, S. B., X. Ma, and G. Qiu. "Experimentation of a novel thermoelectric heat pump system." International Journal of Ambient Energy 25, no. 4 (October 2004): 177–86. http://dx.doi.org/10.1080/01430750.2004.9674959.

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Meng, F., L. Chen, and F. Sun. "Effects of heat reservoir temperatures on the performance of thermoelectric heat pump driven by thermoelectric generator." International Journal of Low-Carbon Technologies 5, no. 4 (September 7, 2010): 273–82. http://dx.doi.org/10.1093/ijlct/ctq036.

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Wijayanto, Hendi Lilih, Amiruddin Amiruddin, Kadriadi Kadriadi, Kadex Widhy Wirakusuma, and Nugroho Tri Atmoko. "Pengaruh Variasi Daya Pompa pada System Pendinginan TEG terhadap Tegangan yang Dihasilkan TEG." Jurnal Ilmiah Universitas Batanghari Jambi 22, no. 1 (March 2, 2022): 477. http://dx.doi.org/10.33087/jiubj.v22i1.2017.

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The amount of heat energy wasted on the furnace wall is of concern to researchers who are trying to utilize the heat energy wasted from a furnace wall as a generator or source of electricity. The waste heat from the combustion in the furnace can now be used as a source of electricity. The waste heat is converted into electricity using a thermoelectric generator, the TEG generator is an electrical generator device that converts heat (temperature difference) directly into electrical energy. In this research, the heat used is the cylindrical wall of the furnace with variations in the size of the pump that flows the coolant to the waterblock, to determine the efficiency and magnitude of the power pump used to cool the hot side of the TEG, which produces a high temperature difference and also produces large electrical energy. thermoelectric generator module reused 4 pieces SP1848 27145 SA module.

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Tikhomirov, D. A., S. S. Trunov, and A. V. Kuzmichev. "Development and Research of a Dehumidifier and an Air Heater Based on Peltier elements." Machinery and Equipment for Rural Area, no. 5 (May 25, 2021): 30–36. http://dx.doi.org/10.33267/2072-9642-2021-5-30-36.

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A functional flow diagram of an energy-saving dehumidifier and an air heater based on Peltier elements has been developed. A method for calculating the heat-power and design parameters of a thermoelectric assembly is presented. Physical modeling of the process of dehumidification and heating of air in a thermoelectric installation has been carried out. The results of tests of a working model of the thermoelectric dehumidifier and air heater are presented. Rational operating modes of the installation have been substantiated, and its energy efficiency in the heat pump mode has been shown.

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Dissertations / Theses on the topic "Thermoelectric Heat Pump"

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Heavner, David A. "Optimization of the heat pumping capacity of a thermoelectric heat pump /." Online version of thesis, 1994. http://hdl.handle.net/1850/11442.

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Siviter, Jonathan Peter. "Increasing the efficiency of the Rankine cycle using a thermoelectric heat pump." Thesis, University of Glasgow, 2014. http://theses.gla.ac.uk/5802/.

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Thermal plants operating on the Rankine cycle are by far the most common method of global electrical power generation. The Rankine cycle, first developed in the late 19th century, continues to this day to be one of the most important practical implementations of a heat engine. Innovation and enhancement of the cycle continues and today's emphasis is directed towards reduced carbon emissions from the combustion of fossil fuel as well as improvement of the absolute efficiency. This thesis presents an increase in the Rankine cycle efficiency through reducing the waste heat rejected from the process by the use of a thermoelectric heat pump. A thermoelectric heat pump converts a flow of electrical charge carriers to a flow of thermal energy via phonon transport through a semiconductor lattice, described by the Peltier effect. The heat flux through the device can be modulated by varying the electrical voltage and current applied to the semiconductor. Unlike a conventional heat pump, however, the direction of heat transport is determined by the direction of migration of the charge carriers. The efficiency with which the device operates is determined by complex relationship amongst the differential temperature across the device, the geometry of the semiconductor pellets forming the device and the electrical current flow. Peltier effect devices are typically used in small-scale refrigerators, on high-power lasers to aid cooling and to maintain the wavelength stability of optical communications networks. In this thesis the application of a heat pump to recover a portion of the waste thermal energy normally rejected from the Rankine cycle process after the re-condensation of feedwater in the condenser of a steam turbine is considered. Firstly, a theoretical statement of the required Coefficient of Performance for economic operation of such a system is derived. This is followed by an experimental investigation to determine if the calculated performance is available using today's thermoelectric technology point. The thesis then presents a rigourous analysis of novel experimental apparatus used to characterise the impact of redirecting enthalpy normally rejected from the process to instead reducing the fuel load to the plant and concludes with an assessment of the economic benefits such a heat pump system would bring.

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Headings, Leon Mark. "Modeling and Development of Thermoelectric Device Technologies for Novel Mechanical Systems." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1325258051.

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Gupta, Abhishek. "Experimental and theoretical analysis of single-phase convective heat transfer in channel with resistive heater and thermoelectric modules for hydronic cooling and heating device." Cincinnati, Ohio : University of Cincinnati, 2009. http://www.ohiolink.edu/etd/view.cgi?acc_num=ucin1236202446.

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Thesis (M.S.)--University of Cincinnati, 2009.
Advisors: Dr. Michael Kazmierczak PhD (Committee Chair), Dr. Milind A. Jog PhD (Committee Member), Dr. Sang Y. Son PhD (Committee Member). Title from electronic thesis title page (viewed April 26, 2009). Includes abstract. Keywords: Peltier cooling; developing internal turbulent forced convection; heat pump and coefficient-of-performance. Includes bibliographical references.

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Ohorodniichuk, Viktoriia. "Influence de la nanostructuration sur les propriétés thermoélectriques des matériaux masifs de type p à base de (Bi, Sb, Te)." Thesis, Université de Lorraine, 2014. http://www.theses.fr/2014LORR0266/document.

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Ce travail a été réalisé en collaboration avec EDF R&D, dans le cadre d’une convention CIFRE-ANRT, l’objectif étant d’améliorer le coefficient de performance de pompes à chaleur thermoélectriques (PACTEs) pour des "Bâtiments Basse Consommation". Les PACTEs présentent de nombreux avantages environnementaux, le désavantage étant leur faible performance. Ainsi l'objectif de ce travail a été d'examiner la possibilité d'améliorer, par nanostructuration les performances des semi-conducteurs utilisés dans les modules thermoélectriques des PACTEs. Nos travaux se sont concentrés sur les solutions solides à base de Sb2-xBixTe3, celles-ci étant, selon l’état-de-l’art, les plus performantes pour l’application visée. La nanostructuration a été réalisée par la technique de trempe sur roue (technique de refroidissement rapide de liquides) de matériaux synthétisés auparavant à l'état liquide dans des tubes en quartz. Les moyens de caractérisation (DRX, MEB, MET, METHR) ont permis de corréler les changements structurels avec la variation des propriétés thermiques et électriques (le pouvoir thermoélectrique, la résistivité électrique, l'effet de Hall, la conductivité thermique) mesurées sur de larges gammes de température (5-460 K). L'influence favorable de la nanostructuration par la diminution de conductivité thermique a été prouvée. Nous avons montré la forte dépendance des propriétés thermoélectriques des matériaux étudiés avec la concentration de défauts et la stœchiométrie. Le dopage avec du Te a été examiné comme une possibilité de contrôler le niveau de la concentration des porteurs de charge. L'idée de créer des niveaux d'impuretés résonantes par un dopage au Sn s’est montrée infructueuse, vraisemblablement en raison de la structure de bande complexe du composé ternaire. Néanmoins, des valeurs du facteur de mérite adimensionel ZT de près de 1,2 ont été obtenues pendant ce travail
This work results from the collaboration between IJL and EDF R&D performed under a CIFRE-ANRT convention, in order to improve the coefficient of performance of thermoelectric heat pumps (THPs). THPs attracted attention of EDF due to its numerous environmental advantages, but the main drawback remains its low performance. The objective of our work was thus to investigate the possibility to enhance the performance of the semiconductors used in the thermoelectric modules of the THPs, by nanostructuration. The research was concentrated on the Sb2-xBixTe3-based solid solutions, the most effective materials for the application sought. The nanostructuration was performed by applying the melt-spinning technique (rapid quenching from a melt on a water-cooled cupper wheel) to the material synthesised beforehand from liquid state in quartz tubes. The means of characterisation (XRD, SEM, TEM, HRTEM) gave the possibility to correlate the structural changes with the variation of the thermal and electrical properties (thermoelectric power, electrical resistivity, Hall effect, thermal conductivity) measured over a wide temperature range (5-460 K). The favourable influence of nanostructuration through the decreasing of thermal conductivity was proved. A high dependence of the thermoelectric efficiency of the studied materials on the concentration of defects and stoichiometry is shown. Doping with Te was investigated as a possibility to control the resulting level of the charge carrier concentration. The idea of creating resonant impurity levels by Sn-doping was shown to be non-conclusive presumably due to the complex band structure of the ternary compounds. Nevertheless, relatively high values of the dimensionless TE figure of merit, close to 1.2, were obtained during this work

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Petryna, Stephen. "Model predictive control of a thermoelectric-based heat pump." Thesis, 2013. http://hdl.handle.net/10155/397.

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Government regulations and growing concerns regarding global warming has lead to an increasing number of passenger vehicles on the roads today that are not powered by the conventional internal combustion (IC) engine. Automotive manufacturers have introduced electric powertrains over the last 10 years which have introduced new challenges regarding powering accessory loads historically reliant on the mechanical energy of the IC engine. High density batteries are used to store the electrical energy required by an electric powertrain and due to their relatively narrow acceptable temperature range, require liquid cooling. The cooling system in place currently utilizes the A/C compressor for cooling and a separate electric element for heating which is energy expensive when the source of energy is electricity. The proposed solution is a thermoelectric heat pump for both heating and cooling. A model predictive controller (MPC) is designed, implemented and tested to optimize the operation of the thermoelectric heat pump. The model predictive controller is chosen due to its ability to accept multiple constrained inputs and outputs as well as optimize the system according to a cost function which may consist of any parameters the designer chooses. The system is highly non-linear and complex therefore both physical modelling and system identi cation were used to derive an accurate model of the system. A steepest descent algorithm was used for optimization of the cost function. The controller was tested in a test bench environment. The results show the thermoelectric heat pump does hold the battery at the speci ed set point however more optimization was expected from the controller. The controller fell short of expectation due to operational restriction enforced during design meant to simplify the problem. The MPC controller is capable of much better performance through adding more detail to the model, an improved optimization algorithm and allowing more flexibility in set point selection.

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Liu, Chi-Hsin, and 劉啟欣. "Performance Analysis of the Micro Solar Energy on the Thermoelectric/Absorption Heat Pump Cooling." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/ye75n3.

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碩士
國立臺北科技大學
能源與冷凍空調工程系碩士班
95
In recent years, thermoelectric principle has been introduced to the automobile thermo-electricity type of refrigerator and this type of refrigerator has also become a rapidly developed and commercialized product. Most of all, it is the only type of system that people adopt at present. Nonetheless, in the case of recreational vehicles, the thermo-electricity type of refrigerator can only drive actions of the thermoelectric chip with the aid of model 12V automobile power. As the automobiles stop, however, the thermo-electricity type of refrigerator loses its cooling function simultaneously since the electric power has been cut. In light of this drawback, this thesis aims to replace the thermoelectric cooling system with micro solar cells as another power source. In this way, automobiles will soon start the thermoelectric cooling system after using the solar cell panel to generate electricity at first. This kind of electricity generation is able to replace the traditional model 12V automobile power. With regard to no sunshine, the automobiles are also equipped with micro absorption heat pump systems to replace the battery in the hope of maintaining cooling ability. In the application of using solar cells to generate electricity, this thesis aims to respectively use computer programs to analyze and simulate the performance of thermo-electricity type and absorbing type systems. Under the circumstances of sunshine, the thesis probes into the relation between solar insolation rates and electric current as well as discusses the influence of electric current on the cooling ability and COPsol (COPsolar). By recognizing the characteristics between solar insolation rates and the maximum cooling ability, we are able to accelerate cooling ability when it is greater or smaller than certain range of solar insolation rates. The result is as following. The optimum electric current (Iopt) produces the maximum COPsol. To increase the temperature difference is futile to COPsol value. But when the hot side temperature reaches 30°C, it has the highest COPsol value, which is about 0.6. As for the LiBr/H2O absorbing type system, the cooling ability decreases as the condenser temperature increases. While at the same condenser temperature, the optimum cooling ability occurs if the generator temperature is higher. Furthermore, the optimum COPAHP (COPAbsorption Heat Pump) value, 0.78, will also occur in the best operation condition.

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Lozano, Adolfo. "Analysis of a novel thermoelectric generator in the built environment." Thesis, 2011. http://hdl.handle.net/2152/ETD-UT-2011-08-4131.

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This study centered on a novel thermoelectric generator (TEG) integrated into the built environment. Designed by Watts Thermoelectric LLC, the TEG is essentially a novel assembly of thermoelectric modules whose required temperature differential is supplied by hot and cold streams of water flowing through the TEG. Per its recommended operating conditions, the TEG nominally generates 83 Watts of electrical power. In its default configuration in the built environment, solar-thermal energy serves as the TEG’s hot stream source and geothermal energy serves as its cold stream source. Two systems-level, thermodynamic analyses were performed, which were based on the TEG’s upcoming characterization testing, scheduled to occur later in 2011 in Detroit, Michigan. The first analysis considered the TEG coupled with a solar collector system. A numerical model of the coupled system was constructed in order to estimate the system’s annual energetic performance. It was determined numerically that over the course of a sample year, the solar collector system could deliver 39.73 megawatt-hours (MWh) of thermal energy to the TEG. The TEG converted that thermal energy into a net of 266.5 kilowatt-hours of electricity in that year. The second analysis focused on the TEG itself during operation with the purpose of providing a preliminary thermodynamic characterization of the TEG. Using experimental data, this analysis found the TEG’s operating efficiency to be 1.72%. Next, the annual emissions that would be avoided by implementing the zero-emission TEG were considered. The emission factor of Michigan’s electric grid, RFCM, was calculated to be 0.830 tons of carbon dioxide-equivalent (CO2e) per MWh, and with the TEG’s annual energy output, it was concluded that 0.221 tons CO2e would be avoided each year with the TEG. It is important to note that the TEG can be linearly scaled up by including additional modules. Thus, these benefits can be multiplied through the incorporation of more TEG units. Finally, the levelized cost of electricity (LCOE) of the TEG integrated into the built environment with the solar-thermal hot source and passive ground-based cold source was considered. The LCOE of the system was estimated to be approximately $8,404/MWh, which is substantially greater than current generation technologies. Note that this calculation was based on one particular configuration with a particular and narrow set of assumptions, and is not intended to be a general conclusion about TEG systems overall. It was concluded that while solar-thermal energy systems can sustain the TEG, they are capital-intensive and therefore not economically suitable for the TEG given the assumptions of this analysis. In the end, because of the large costs associated with the solar-thermal system, waste heat recovery is proposed as a potentially more cost-effective provider of the TEG’s hot stream source.
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Book chapters on the topic "Thermoelectric Heat Pump"

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Pala, Nezih, Ahmad Nabil Abbas, Carsten Rockstuhl, Christoph Menzel, Stefan Mühlig, Falk Lederer, Joseph J. Brown, et al. "Thermoelectric Heat Pump." In Encyclopedia of Nanotechnology, 2741. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-90-481-9751-4_100848.

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Joga, Venkata Sandeep, Sundar R. Nath, K. Ravi Kumar, G. Pramod Kumar, and Jayaraj Simon. "Design and Simulation of Thermoelectric Heat Pump." In Lecture Notes on Multidisciplinary Industrial Engineering, 725–45. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-7643-6_59.

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Ge, Giedrius, Irina Georgievna Ershova, Alexey N. Vasilyev, Dmitry Tikhomirov, Gennady Nikolaevich Samarin, Dmitrii Poruchikov, and Mikchail Arkadievich Ershov. "Energy Saving System Based on Heat Pump for Maintain Microclimate of the Agricultural Objects." In Advances in Environmental Engineering and Green Technologies, 60–84. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-5225-9420-8.ch003.

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At agricultural facilities, the main attention is paid to the formation and maintenance of their microclimate parameters, and mechanization of storage processes. As world experience shows, it is necessary to develop and implement energy-saving systems and the use of renewable energy sources. The authors have developed energy-saving systems based on the heat pump, with upgraded electrical regulators. The developed system (patent 100873), uses thermoelectric elements and a low-potential energy source, to effectively maintain the temperature parameters of the microclimate during long-term storage of potatoes, but it requires a large amount of electricity consumption (30 to 35 kW), so the authors have developed an energy-saving system based on a heat pump (patent 123909). The temperature regime is achieved by using a thermoelectric cooler-heater and an electric heater. The humidifier allows for maintaining the necessary relative air humidity.

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Conference papers on the topic "Thermoelectric Heat Pump"

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Sinha, Ashish, and Yogendra Joshi. "Performance of a Thermoelectric Adsorption Heat Pump Vis-à-Vis Thermoelectric Device and Adsorption Heat Pump for Electronics Cooling Applications." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-88921.

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Performance of ‘ThermoElectric (TE)’, ‘ThermoElectric-Adsorption (TEA)’ and Adsorption heat pumps has been compared, theoretically, for identical conditions. The TEA heat pump uses TE devices to drive heat regeneration for its adsorption cycle. While this increases the COP of the TEA heat pump, it also highlights the need to investigate if a TE device, when applied alone, could have outperformed the TEA and the Adsorption heat pumps. This becomes important in the context of cooling applications that only require cooling of a few degrees below ambient, and in cases where the ambient environment is thermally harsh. In the first context the TE devices pump heat across a lesser temperature difference with good COP that may outweigh the COP of a TEA or an Adsorption heat pump, in the second, the performance of TE device deteriorates due to high temperatures, and gains in overall COP of TEA heat pump due to heat regeneration become marginal. A heat rejection temperature range of 50 to 200 °C is considered for this investigation. Mathematical models for formulation of the COP of these systems are constructed and compared. It is observed that a TE device is preferable for cooling 20–30°C below the ambient. Beyond this range a TEA chiller is a good option.

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Feng, Dudong, Shi-chune Yao, Tian Zhang, and Qiming Zhang. "Modeling of Smart Heat Pump Using Thermoelectric and Electrocaloric Materials." In ASME 2016 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/smasis2016-9033.

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In this study, a smart heat pump, which could be used for the cooling of electronics, made of the laminated structure of thermoelectric (TE) and electrocaloric (EC) materials is studied. A simple arrangement of two TE layers sandwiched with one EC layer is modeled. This smart heat pump utilized the newly developed EC materials of giant adiabatic temperature change and the TE materials of high figure of merit, which has the advantages of no moving parts, made of solid state, operable over large working temperature difference, and can be formed into very small size. The operation of the device is numerically modelled considering the three major parametric effects: EC operation as function of time, electric current applied on TE, and temperature difference between the hot and cold sinks. The results on Coefficient of Performance (COP) and heat flow per unit area are discussed. This study validates the feasibility of TE-EC-TE laminated structure heat pump, and extends the understanding by further discussing the performance of structures with more laminated layers.

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Miles, Stephanie D., Shamus McNamara, and Kunal Pharas. "Ten Stage Knudsen Gas Pump." In ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels collocated with the ASME 2012 Heat Transfer Summer Conference and the ASME 2012 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/icnmm2012-73209.

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A Knudsen gas pump is driven by the thermal transpiration effect. In this study, a Knudsen gas pump was fabricated which is powered by using a thermoelectric module. By adding current to the thermoelectric module, each module’s ceramic plate is heated/cooled causing a temperature gradient when positioned properly across the nano-porous membranes. Thermal transpiration occurs, causing a pressure gradient across the channels of the membrane which then induces a gas flow across the membrane. During the study, each single pump was initially tested for pressure performance by powering the thermoelectric at 6 and 15 Watts. Loaded and unloaded flow rates were also tested for a single pump. Five and 10 pumps were then connected into series and the pressure performance was tested at 6 and 15 Watts. The flow rate under loaded and unloaded conditions was also tested. It has been demonstrated that the 10 stage series Knudsen pump creates a significantly larger pressure than a 5 stage series or a single stage Knudsen pump.

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Yazawa, Kazuaki, and Ali Shakouri. "Optimum Design and Operation of Thermoelectric Heat Pump With Two Temperatures." In ASME 2015 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems collocated with the ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/ipack2015-48682.

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We present a comprehensive analysis and optimization of the thermoelectric (TE) heat pump and refrigeration in contact with two constant-temperature reservoirs, followed by a discussion of their cost effectiveness. In many applications in electronics cooling, the heat source temperature is constrained as well as the gas or liquid cooling heat sink. We optimize the thermoelectric design by changing both the element (leg) thickness and drive current simultaneously in order to achieve maximum energy efficiency, i.e., to obtain the highest coefficient of performance (COP) for the heat pump. Each variable and performance is considered per unit area. COP vs cooling capacity, which is the heat amount pumped, by changing the driving current, shows a unique characteristic and it looks like the Greek character ‘beta’ in a plot. This ‘beta plot’ gives a global view of the performance of various TE heat pump systems. We discuss the similarity with the graph obtained in power generation in contact with the constant temperature reservoirs when the trade-off between the efficiency and power output is considered. In this plot, the maximum COP is found at a much smaller current compared to the maximum heat cooling capacity Qmax. This Qmax is found when the internal resistance is sqrt (1 + ZT) times the sum of the external resistances, but only when these contacts are symmetric and the net temperature difference is zero. The ratio increases slightly as the net temperature difference increases (heat pumping to a higher temperature). This shows some differences compared to the power generation mode where an impedance match happens when the ratio of internal to external resistances is constant at sqrt (1 + ZT). If the contact thermal resistances with the hot and cold sides are asymmetric, Qmax and the optimum resistance ratio are both reduced when the heat sink resistance increases and they both increase as the heat sink resistance decreases. TE materials are expensive relative to the other components; hence, it is important to minimize the material use. The COP per cost and cooling capacity per cost are investigated. Similar to power generators, the TE element can be thinner as the fractional area coverage of the TE elements is reduced, while maintaining a constant internal thermal resistance. The most cost effective design is found to be thinner than that of the maximum performance. Also, the ZT value impact for the cost performances is smaller, especially in COP.

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Cassar, Daniel, and Xia Wang. "Design of a Climate Chamber to Study Transient Performance of a Proton Exchange Membrane Fuel Cell at Near Freezing Temperatures." In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-23291.

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Freezing temperature startup of fuel cells is a serious issue for smaller applications such as auxiliary or backup power units. To accurately test and examine this problem, a laboratory climate chamber is required which can accurately represent possible environments. This research designed a climate chamber using thermoelectric (peltier) heat pumps to provide temperatures down up to −10 degrees Celsius. The internal heat absorption from air utilized forced convection while heat emitted by the thermoelectric device was removed by flowing water channels. A copper plate was used to provide separation between the heat absorbing plate and the thermoelectric heat pump. The unit showed accurate temperature control and successful operation at sub-zero temperatures. Two proton exchange membrane fuel cells with 117 Nafion membrane and 212 Nafion membrane were tested in the climate chamber under various operating conditions. The startup performance was examined under both freezing and non-freezing temperatures. Heated and humidified feed gasses were shown to greatly improve the steady state time of the 117 setup by over 30%.

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Lei, Peng, and Xiao Ying. "Thermoelectric Heat Pump Drying Temperature Control System on the Basis of 89C51." In 2012 International Conference on Computer Science and Electronics Engineering (ICCSEE). IEEE, 2012. http://dx.doi.org/10.1109/iccsee.2012.444.

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Khire, Ritesh A., Achille Messac, and Steven Van Dessel. "Optimization Based Design of Thermoelectric Heat Pump Unit of Active Building Envelope Systems." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-82490.

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Abstract:

Active Building Envelope (ABE) systems represent a new thermal control technology that actively uses solar energy to compensate for passive heat losses or gains in building envelopes or other enclosures. This paper introduces the first steps in exposing the community to this new technology, and explores an optimization based design strategy for its feasible application. The overall system is discussed, while this paper also gives particular focus to the design of a key constituent component. Namely, the collection of thermoelectric heat pumps; or, the TE unit. The latter becomes an integral part of the generic enclosure, and is a collection of thermoelectric coolers, or heaters. As a critical component of the optimization based design strategy, select computationally inexpensive approximate analytical models of generic TE coolers/heaters (TE Cooler) are developed. The optimization technique is implemented to evaluate different design configurations of the TE unit. The preliminary results indicate that the total input power required to operate the TE unit decreases as the distribution density of the TE coolers increases. In addition, the thermal resistance of the heat sink (attached to the TE cooler) plays a key role in determining the number of TE coolers required. These preliminary findings may have practical implications regarding the implementation of the ABE system.

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Evstatieva, Nadezhda Liozovna, Ivaylo Raychev Belovski, and Anatoliy Trifonov Aleksandrov. "Optimization and Modelling of the Thermal Resistance of a Thermoelectric Pump Heat Sink." In 2019 X National Conference with International Participation (ELECTRONICA). IEEE, 2019. http://dx.doi.org/10.1109/electronica.2019.8825590.

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Sinha, Ashish, and Yogendra Joshi. "Performance of two-step thermoelectric-adsorption heat pump for harsh environment electronics cooling." In 2010 12th IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems (ITherm). IEEE, 2010. http://dx.doi.org/10.1109/itherm.2010.5501385.

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Xu, Min, Ling Zhang, ZB Liu, and JL Zhou. "Experimental Study on the Heat Storage/Release Characteristics of a Thermoelectric Heat Pump Phase-Change Thermal Storage Device." In 2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring (CDCIEM). IEEE, 2011. http://dx.doi.org/10.1109/cdciem.2011.249.

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