Characterization of Solar-Aged Porous Silicon Carbide for Concentrated Solar Power Receivers

Abstract

Porous silicon carbide is a promising material for ceramic receivers in next-generation concentrated solar power receivers. To investigate its tolerance to thermal shock, accelerated ageing of large coupons (50 × 50 × 5 mm) was conducted in a solar furnace to investigate the effects of thermal cycling up to 1000 °C, with gradients of up to 22 °C/mm. Non-destructive characterization by computed X-ray tomography and ultrasonic inspection could detect cracking from thermal stresses, and this informed the preparation of valid specimens for thermophysical characterization. The effect of thermal ageing on transient thermal properties, as a function of temperature, was investigated by using the light-flash method. The thermophysical properties were affected by increasing the severity of the ageing conditions; thermal diffusivity decreased by up to 10% and specific heat by up to 5%.

Semiconductor Materials for Solar PV Technology and Challenges towards Electrical Engineering

“…SiC is used in power electronics devices like inverters which transport force from photovoltaic array to the power grid. When PV component produces electricity, energy ows from a power electronics mechanism that enclose semiconductor devices [1,2,13]. Silicon was the rst chosen semiconductor used to make this campaign, but researchers veri ed that SiC can be slighter, faster, tougher, more e cient, and more cost e ective.…”

“…In order to overcome from the negative era, photovoltaic cells have been introduced in the market area. Most solar panels consist of crystalline silicon PV cells, which fabricate linear pro ciency to adapt sunlight into electricity [1]. Multijunction astral cells fabricate e ciency above 40%, and they are ready with di erent part of the solar cells to con ne sunlight.…”

“…Photovoltaic cell is the recent generation, and it is made up of semiconductor materials which do not activate at high temperature. When the sunlight reaches the surface of the PV Cell, the electrical energy is being created with PV Cell process [1,2]. Ga-N plans have been shaped to meet prospect insist of electricity.…”

Un enfoque de control libre de modelo para el control de temperatura en hornos solares

“…En concreto, para este trabajo se considerará que la pieza a tratar es de Carburo de Silicio, con unas dimensiones de 50.4×50.3×5.7 mm 3 . En [5], se presenta una descripción completa de la pieza considerada.…”

“…El resto de parámetros están relacionados con magnitudes físicas del horno y de la pieza considerada y se presentan en la Tabla 1. Toda la información detallada acerca del modelo y de los parámetros de la pieza y del horno se puede encontrar en [1,5,14].…”