Review on Design and Analytical Model of Thermoelectric Generator Mr.Satayu Travadi 1 , Prof. Jaspalsinh Dabhi 2 , 1 Postgraduate Student (M.E.-Thermal) (Mech.Dept), L.D.R.P. Institute of Technology and Research, Gandhinagar, Gujarat Technological University Ahmadabad, India satayutravadi@gmail.com 2 Assistant Professor (Mech.Dept) Department of Mechanical Engineering, L.D.R.P. College of Engineering and Technology, Gandhinagar, Gujarat Technological University. Ahmadabad, India jaspalsinh@gmail.com Abstract: Despite all advances in the miniaturization of Microsystems which depend on a central power source or bulky batteries with limited lifetime. Growing fields like autonomous Microsystems or wearable electronics urgently look for micro scale power generators. One possible solution is to convert waste heat into electrical power with TEG. Thermoelectric generator is a useful and environment friendly device with the advent of semiconductor materials the efficiency of a TEG can even be an alternative for the conventional heat engines. To fabricate thermoelectric generators, one must design the structure of the TEG. This study investigated the role of the dimensions of TEG, including the length, and cross-sectional area of the thermo elements to evaluate the power and efficiency, The governing equations were derived from the Seebeck effect and Peltier effect. We calculated the thermoelectric power generated by the TEG and efficiency. The thermoelectric simulation produced design guidelines for high-performance TEG. Keywords: Thermoelectric generator, Seebeck Co-efficient, Power factor, p-type, n-type. Introduction:- For the sustainable development of humankind and to stop climate change as outlined in the Kyoto Protocol, the use of conventional energy sources such as fossil fuels will have to be limited in the very near future. As one such alternative, thermoelectric energy has many favorable characteristics light weight, small scale, and low manufacturing cost [1]. Thermoelectric generators have been used in military, aerospace, instrument, industrial and commercial products, as a power-generation device for specific purposes. Many researchers have been concerned about the physical properties of thermoelectric materials and the manufacturing technique of thermoelectric modules [2]. In addition to the improvement of the thermoelectric materials and modules, the system analysis (and optimization) of a thermoelectric generator is equally important in designing high-performance thermoelectric-generator. Especially, the capacity of Peltier and Seebeck effect to dispense with the moving parts in the realm of energy transformation from heat to electricity and vice versa is more appealing in such devices. With the advent of semiconductor materials the efficiency of a thermoelectric generator can even be an alternative for the conventional heat engines [3]. So, the mathematical modeling of a simple thermoelectric generator can also replace the elaborate task of simulating an actual complex power plant, heat engine or refrigerator. A TEG produces a voltage when there is a temperature difference between the hot-side and cold-side of TEG. Thermoelectric effect includes Seebeck effect, Peltier effect and Thomson effect, it also accompanies with other effects, such as Joulean effect and Fourier effect. Thermoelectric generation is a technology for directly converting- thermal energy into electrical energy, it has no moving parts, is compact, quiet, highly reliable and environmentally friendly. Because of these merits, it is presently becoming a noticeable research direction [4]. Thermo Electric Generator Concept:- In 1822 the German Scientist Seebeck discovered that a loop of two dissimilar metals developed an e.m.f. when the two junctions were kept at different temperatures. This effect has long been used in thermo-couples to measure temperatures. This phenomenon offers one method of producing electrical energy directly from the heat of combustion.