Experimental and Modeling Study on Solar System Using Linear Fresnel Lens and Thermoelectric Module

Abstract

This work is concerned with an experimental design for generating power from thermoelectric generator (TEG) and linear Fresnel lens collector with one-axis solar tracking system. Main purpose of this experimental design is to measure the performance of the TEG with linear Fresnel lens collector. This work also aims to create a mathematical model by using adaptive neuro fuzzy inference system (ANFIS) model so that the electrical production estimates of the constructed system can be made for a given data set. For this reason, two individual systems, selective surface adapted for achieving medium temperature scale and nonselective surface for low temperatures, were constructed. There are two different coolant systems, which are passive and active, to create effective open circuit voltage values. Experimental results show that the maximum open circuit voltages were obtained as 0.442 V and 1.413 V for experimental system with selective surface adapted, as 0.341 V and 0.942 V with nonselective surface adapted when the received radiated power on Fresnel lens was measured nearly 625 W/m2 on average in the noon time. Experimental values were collected for the selective surface adapted system on 11th and 12th of September, 2017 and for nonselective surface on 13th of September, 2017, respectively, in Samsun/Turkey with location 41°14′N and 36°26′E. The collected data such as solar irradiation, wind speed, ambiance temperature, and open circuit voltage were used for (ANFIS) modeling. Obtained result shows that experimental calculations and modeling are consistent with each other.

Fabrication of low-cost flexible thermoelectric generator using conductive HB graphite paint operated by solar radiation

“…In 2016, Zhang et al [16] used gravity assisted heat pipe as the solar collector and produced an output voltage of 4.40 V under the temperature gradient of 40 K in commercial available Bi 2 Te 3 (CP-14-127-045) device. In 2018, Koysal et al [17] used a Fresnel lens to focus the solar radiation on Bi 2 Te 3 based TE module and generated open circuit of 1.413 V. A lot of references to solar thermoelectric devices can be found in the literature in which researchers have used commercial available or fabricated metal based TE devices using Bi 2 Te 3 , PbTe etc materials but these materials and the energy concentration strategies are very costly since it is equipped with heat collection pipe, Gravity-assisted heat pipes, Radiators etc [18][19][20]. However, in flexible solar thermoelectric generators (STEGs), no work has been reported on the single material carbon composite thermoelectric device, graphite paint.…”

Research on a floating thermoelectric power generator for use in wetland monitoring

“…In order to solve this problem, the optical concentrator and the cooling systems have been introduced to maintain the temperature difference across a thermoelectric generator. Concentrating Fresnel lenses are widely used in solar cell [14] sand thermoelectric generators [9,[15][16][17] that make use of optical concentrator systems. Willars et al [9] investigated a solar hybrid system with Fresnel lens, of which the hot side temperature succeed in reaching 437K.…”