Abstract
Employing thermoelectric generators (TEGs) to gather heat dissipating from the human body through the skin surface is a promising way to supply electronic power to wearable and pocket electronics. The uniqueness of this method lies in its direct utilization of the temperature difference between the environment and the human body, and complete elimination of power maintenance problems. However, most of the previous investigations on thermal energy harvesters are confined to the TEG and electronic system themselves because of the low quality of human energy. We evaluate the energy generation capacity of a wearable TEG subject to various conditions based on biological heat transfer theory. Through numerical simulation and corresponding parametric studies, we find that the temperature distribution in the thermopiles affects the criterion of the voltage output, suggesting that the temperature difference in a single point can be adopted as the criterion for uniform temperature distribution. However, the criterion has to be shifted to the sum of temperature difference on each thermocouple when the temperature distribution is inconsistent. In addition, the performance of the thermal energy harvester can be easily influenced by environmental conditions, as well as the physiological state and physical characteristics of the human body. To further validate the calculation results for the wearable TEG, a series of conceptual experiments are performed on a number of typical cases. The numerical simulation provides a good overview of the electricity generation capability of the TEG, which may prove useful in the design of future thermal energy harvesters.
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References
Leonov V, Vullers R J M. Wearable thermoelectric generators for body-powered devices. Journal of Electronic Materials, 2009, 38(7): 1491–1498
Wang Z Y, Leonov V, Fiorini P, van Hoof C. Realization of a wearable miniaturized thermoelectric generator for human body applications. Sensors and Actuators A: Physical, 2009, 156(1): 95–102
Mateu L, Moll F. Review of Energy harvesting techniques and applications for microelectronics. Proceedings of the SPIE Microtechnologies for the New Millenium, Sevilla, 2005, 5837: 359–373
Spies P, Pollak M, Rohmer G. Power management for energy harvesting applications. Proceedings of the 1st Annual nanoPower Forum (nPF) Darnell Group, San José, California, USA, 2007
Vullers R J M, Leonov V, Sterken T, Schmitz A. Energy scavengers for wireless intelligent microsystems. On Board Technology, 2006, (6): 34–37
Paulides J J H, Jansen J W, Encica L, Lomonova E A, Smit M. Human-Powered Small-Scale Generation System for a Sustainable Dance Club. In: Proceedings IEEE International Electric Machines and Drives Conference, Maimi, Florida: IEEE, 2009, 439–444
Donelan J, Li Q, Naing V, Hoffer J A, Weber D J, Kuo A D. Biomechanical energy harvesting: Generating electricity during walking with minimal user effort. Science, 2008, 319(5864): 807–810
Brooks G A, Fahey T D, Baldwin K M. Exercise Physiology: Human Bioenergetics and Its Applications, Boston: McGraw-Hill, 2005
Mateu L, Codrea C, Lucas N, Pollak M, Spies P. Energy harvesting for wireless communication systems using thermogenerators. In: Proc of the XXI Conference on Design of Circuits and Integrated Systems (DCIS), Barcelona, Spain, 2006, 22–24
Leonov V, Vullers R J M. Wearable electronics self-powered by using human body heat: The state of the art and the perspective. Journal of Renewable and Sustainable Energy, 2009, 1(6): 062701
Jansen A J. Advances in human-powered energy systems in consumer products. In: Marjanovic D ed. Proceedings of the Design 2004, 2004, 1539–1544
Chakraborty A, Saha B B, Koyama S, Ng K C. Thermodynamic modeling of a solid state thermoelectric cooling device: temperature-entropy analysis. International Journal of Heat and Mass Transfer, 2006, 49(19,20): 3547–3554
Snyder G J. Thermoelectric Energy Harvesting: Energy Harvesting Technologies, New York, USA: Springer Science + Business Media, 2009, 325–336
Kishi M, Nemoto H, Hamao T M. Yamamoto M, Sudow S, Mandai M, Yamamoto S. Micro thermoelectric modules and their application to wristwatches as an energy source. In: 18th International Conference on Thermoelectrics. Proceedings-ICT’ 99, Baltimore, MD, 1999, 301–307
Huesgen T, Woias P, Kockmann N. Design and fabrication of MEMS thermoelectric generators with high temperature efficiency. Sensors and Actuators A: Physical, 2008, 145–146: 423–429
Weber J, Potje-Kamloth K, Haase F, Detemple P, Völklein F, Doll T. Coin-size coiled-up polymer foil thermoelectric power generator for wearable electronics. Sensors and Actuators A: Physical, 2006, 132(1): 325–330
Van Bavel M, Leonov V, Yazicioglu R F, Torfs T, van Hoof C, Posthuma N E, Vullers R J M. Wearable battery-free wireless 2-channel EEG systems powered by energy scavengers. Sensors & Transducers Journal, 2008, 94(7): 103–115
Torfs T, Leonov V, Vullers R J M. Pulse oximeter fully powered by human body heat. Sensors & Transducers Journal, 2007, 80(6): 1230–1238
Leonov V, Torfs T, van Hoof C, Vullers R J M. Smart wireless sensors integrated in clothing: an electrocardiography system in a shirt powered using human body heat. Sensors & Transducers Journal, 2009, 107: 165–176
Leonov V, Vullers R J M. Thermoelectric generators on living beings. In: Proceedings of the 5th European Conference on ‘Thermoelectrics (ECT)’, Odessa, Ukraine, 2007, 47–52
Yada A, Pipe K P, Shtein M. Fiber-based flexible thermoelectric power generator. Journal of Power Sources, 2008, 175(2): 909–913
Pennes H H. Analysis of tissue and arterial blood temperatures in the resting human forearm. Journal of Applied Physiology, 1948, 1(2): 93–122
Fanger P O. Thermal Comfort. New York: McGraw-Hill, 1970, 19–67
Liu J, Wang C. Bioheat Transfer. Beijing: Science Press, 1997, 285–290 (in Chinese)
Deng Z S, Liu J. Mathematical modeling of temperature mapping over skin surface and its implementation in thermal disease diagnostics. Computers in Biology and Medicine, 2004, 34(6): 495–521
Li Y. Thermal analysis and optimum design on the semiconductor thermoelectric generation module. Dissertation for the Master’s Degree. Shanghai: Tongji University, 2008
Fang Z J. Thick film growth of the diamond-film/alumina composite and its application in microelectronics. Dissertation for the Doctoral Degree. Shanghai: Shanghai University, 2003
Ma Q F, Fang R S, Xiang L C, Li S. Practical Handbook of Thermophysical Properties. Beijing: China Agricultural Machinery Press, 1986 (in Chinese)
Yang S M, Tao W Q. Heat Transfer. 3rd ed. Beijing: Higher Education Press, 1998: 424–425 (in Chinese)
Holman J P. Heat Transfer. Beijing: People’s Education Press, 1981
Chen Z Q. Comparative analysis, 4 calculating methods for human body surface area. Chinese Journal of Sports Medicine, 2003, 22(6): 576–579
Zhang J W. How Thick is Your Face Skin?: 117 Incredible Mysteries of Human Figures. Nanning: Guangxi Science and Technology Press, 2008
Rowe D M. CRC Handbook of Thermoelectrics. London: CRC Press, 1995, 490–494
Yang Y, Wei X J, Liu J. Suitability of a thermoelectric power generator for implantable medical electronic devices. Journal of Physics D: Applied Physics, 2007, 40(18): 5790
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Yang, Y., Liu, J. Evaluation of the power-generation capacity of wearable thermoelectric power generator. Front. Energy Power Eng. China 4, 346–357 (2010). https://doi.org/10.1007/s11708-010-0112-z
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DOI: https://doi.org/10.1007/s11708-010-0112-z