Heat transfer characteristics of a thermoelectric power generator system for low-grade waste heat recovery from the sugar industry
- 40 Downloads
A numerical model was developed to simulate thermal conductivity and electrical energy transfer processes in a thermoelectric generator (TEG) designed for low-grade waste heat recovery in the sugar industry. In this study, the researchers selected four thermoelectric (TE) cooling modules of TEC1-12706 and TEC1-12710 and TE power modules of SP1848-27145 SA and TEG1-127-40-40-250 for testing of low-grade heat at a temperature of 200 °C. The test results indicated that an aluminium plate of 10 mm in thickness was most effective for creating heat exchange that is favourable for installation in a TEG system. The TEC1-12710 could generate a maximum power output of 126.15 W at a matched load of about 1.65 Ω. The thermoelectric power generation system can convert 11.5% of heat energy into electrical energy. Finally, the electrical energy costs for TEC1-12710 were estimated to be USD$ 0.22 per kWh, which is comparable to TEC1-12706, SP1848-27145 SA and TEG1-127-40-40-250. Therefore, the TE cooling module in the current work is an interesting and new alternative for power generation from waste heat in sugarcane industries.
KeywordsThermoelectric power generator system Heat transfer effect Low-grade waste heat recovery Sugar industry
This research was financially supported by the Energy Policy and Planning Office (EPPO), Ministry of Energy is gratefully acknowledged. The cooperation of the Office of The Cane and Sugar Board (OCSB), the pilot plant development and various sugar mills in providing information and assistance are deeply appreciated. Thanks are also due to the support of Research and Energy Management Center, Department of Physics, Faculty of Science, Naresuan University, Phitsanulok (Thailand).
- 1.Office of the Cane and Sugar Board (OCSB) (2017) Thailand sugar production report. Available on http://www.ocsb.go.th. Accessed 29 April 2017
- 2.Pazuch FA, Nogueira CEC, Souza SNM, Micuanski VC, Friedrich L, Lenz AM (2017) Economic evaluation of the replacement of sugar cane bagasse by vinasse, as a source of energy in a power plant in the state of Paraná, Brazil. Renew Sust Energ Rev 76:34–42. https://doi.org/10.1016/j.rser.2017.03.047 CrossRefGoogle Scholar
- 6.Alanne K, Laukkanen T, Saari K, Jokisalo J (2014) Analysis of a wooden pellet-fueled domestic thermoelectric cogeneration system. Appl Therm Eng 36(1):1–10. https://doi.org/10.1016/j.applthermaleng.2013.10.054 CrossRefGoogle Scholar
- 11.Meng FK, Chen LG, Sun FR (2012) Effect of temperature dependences of thermoelectric properties on the power and efficiency of a multielement thermoelectric generator. Int J Energy Environ 3(1):137–150Google Scholar
- 15.Zhou M, He Y, Chen Y (2014) A heat transfer numerical model for thermoelectric generator with cylindrical shell and straight fins under steady-state conditions. Appl Therm Eng 68(1–2):80–91. https://doi.org/10.1016/j.applthermaleng.2014.04.018 CrossRefGoogle Scholar
- 17.Zheng XF, Liu CX, Boukhanouf R, Yan YY, Li WZ (2014) Experimental study of a domestic thermoelectric cogeneration system. Appl Therm Eng 62:69–79. https://doi.org/10.1016/j.applthermaleng.2013.09.008 CrossRefGoogle Scholar
- 21.Incropera FP, Dewitt DP, Bergman TL, Lavine AS (2007) Fundamentals of heat and mass transfer, 6th Ed. Wiley, Hoboken, pp 137–168.Google Scholar
- 24.Vinning CB (1995) CRC handbook of thermoelectrics, ed D.M. Row. CRC Press, New York, pp. 329–337Google Scholar