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research-article

Optimal Design of Wavelength Selective Thermal Emitter for Thermophotovoltaic Applications

[+] Author and Article Information
Alok Ghanekar

Department of Mechanical, Industrial and Systems Engineering, University of Rhode Island, Kingston RI 02881, USA
alokg@my.uri.edu

Mingdi Sun

Research and Development Center CANATAL Environ Tech. Co. 88 Suyuan Ave., Jiangning District Nanjing, Jiangsu, 21102, China
Sunmingdi@canatal.com.cn

Zongqin Zhang

Research and Development Center CANATAL Environ Tech. Co. 88 Suyuan Ave., Jiangning District Nanjing, Jiangsu, 21102, China
zhangzq@canatal.com.cn

Yi Zheng

Department of Mechanical, Industrial and Systems Engineering, University of Rhode Island, Kingston RI 02881, USA
zheng@uri.edu

1Corresponding author.

ASME doi:10.1115/1.4036790 History: Received November 29, 2016; Revised January 12, 2017

Abstract

We theoretically and numerically demonstrate optimal design of wavelength selective thermal emitter using one dimensional (1-D) and two dimensional (2-D) metal-dielectric gratings for thermophotovoltaic (TPV) applications. Proposed design consists of tungsten (W) and silicon dioxide (SiO2) gratings which can withstand high temperatures. Radiative properties of 1-D grating were calculated using a numerical method, while effective medium approximation was used for 2-D gratings. Optimal designs were obtained such that output power is maximum for GaSb photovoltaic cell at emitter temperature of 1500 K and radiated energy for longer wavelengths is limited to a low value. A constrained optimization was performed using Genetic Algorithm (GA) to arrive at optimal design.

Copyright (c) 2017 by ASME
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