Abstract
The current cutting edge in photovoltaic technology states that the conversion efficiency of photovoltaic (PV) systems has inverse relation and thermoelectric systems has direct relation with temperature. Therefore, cascading of thermoelectric (TE) systems with concentrated photovoltaic (CPV) systems has the potential to improve the total power output of CPV system by effectively utilizing the solar spectrum. The excess thermal energy of the PV system can be utilized as heat input in thermoelectric system to generate power. In this chapter, a thermodynamic model based on the first and second laws of thermodynamics for concentrated photovoltaic-thermoelectric (CPV-TE) hybrid system has been developed and analysed in a MATLAB Simulink environment. Further, the parametric optimization has been carried out to improve the overall performance of the hybrid system. The effect of concentration ratio, resistance ratio, thermal resistance between the TE module and the environment and the thermal resistance between the PV and TE modules has been discussed.
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Appendix-A
Appendix-A
The temperature-dependent material properties of Bi2Te3 and the expressions for P1 through P6 and Q1 through Q6 are defined as:
s = [sp − (−sn)] = (44448.0 + 1861.2Tm − 1.9810Tm 2) × 10−9 | ρn = ρp = (5112.0 + 163.4Tm + 0.6279Tm 2) × 10−10 |
kn = kp = (62605.0 − 277.7Tm + 0.4131Tm 2) × 10−4 | μ = [μp − (−μn)] = (1861.2Tm − 3.962Tm 2) × 10−9 |
\( {P}_1=\frac{\alpha_{\mathrm{h}}A\left(\mathrm{FF}\right)\left[\mu \left(m+1\right)-{\alpha}_{\mathrm{h}}\left(2m+1\right)\right]{\psi}_{\mathrm{h}}}{8\left(\rho L+2{R}_{\mathrm{ec}}\right){\left(m+1\right)}^2} \) | \( {Q}_1=\frac{\alpha_{\mathrm{h}}A\left(\mathrm{FF}\right)\left[\mu \left(m+1\right)-{\alpha}_{\mathrm{h}}\right]{\psi}_{\mathrm{c}}}{8\left(\rho L+2{R}_{\mathrm{c}}\right){\left(m+1\right)}^2} \) |
\( {P}_2=\frac{\alpha_cA\left(\mathrm{FF}\right)\left[\mu \left(m+1\right)+{\alpha}_{\mathrm{c}}\right]{\psi}_{\mathrm{h}}}{8\left(\rho L+2{R}_{\mathrm{ec}}\right){\left(m+1\right)}^2} \) | \( {Q}_2=\frac{\alpha_cA\left(\mathrm{FF}\right)\left[\mu \left(m+1\right)+{\alpha}_{\mathrm{c}}\left(2m+1\right)\right]{\psi}_{\mathrm{c}}}{8\left(\rho L+2{R}_{\mathrm{c}}\right){\left(m+1\right)}^2} \) |
\( {P}_3=\frac{-A\left(\mathrm{FF}\right)\left[\mu \left(m+1\right)\left({\alpha}_{\mathrm{h}}+{\alpha}_{\mathrm{c}}\right)-2m{\alpha}_{\mathrm{h}}{\alpha}_{\mathrm{c}}\right]{\psi}_{\mathrm{h}}}{8\left(\rho L+2{R}_{\mathrm{ec}}\right){\left(m+1\right)}^2} \) | \( {Q}_3=\frac{-A\left(\mathrm{FF}\right)\left[\mu \left(m+1\right)\left({\alpha}_{\mathrm{h}}+{\alpha}_{\mathrm{c}}\right)+2m{\alpha}_{\mathrm{h}}{\alpha}_{\mathrm{c}}\right]{\psi}_{\mathrm{c}}}{8\left(\rho L+2{R}_c\right){\left(m+1\right)}^2} \) |
\( {P}_4=\frac{-\left( kA\left(\mathrm{FF}\right){\psi}_{\mathrm{h}}+L\right)}{L} \) | \( {Q}_4=\frac{- kA\left(\mathrm{FF}\right){\psi}_{\mathrm{c}}}{L} \) |
\( {P}_5=\frac{kA\left(\mathrm{FF}\right){\psi}_{\mathrm{h}}}{L} \) | \( {Q}_5=\frac{kA\left(\mathrm{FF}\right){\psi}_{\mathrm{h}}+L}{L} \) |
P6 = TPV | Q6 = − Ta |
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Lamba, R., Kaushik, S.C. (2018). Parametric Optimization of Concentrated Photovoltaic-Thermoelectric Hybrid System. In: Nižetić, S., Papadopoulos, A. (eds) The Role of Exergy in Energy and the Environment. Green Energy and Technology. Springer, Cham. https://doi.org/10.1007/978-3-319-89845-2_37
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DOI: https://doi.org/10.1007/978-3-319-89845-2_37
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