화학공학소재연구정보센터
Renewable Energy, Vol.138, 128-138, 2019
A study of the effect of the longitudinal movement on the performance of small scale linear Fresnel reflectors
The sizing of a small-scale linear Fresnel reflector directly influences its primary cost as well as the annual energy output and, hence, its financial attractiveness. In addition, the area required for its installation is a critical parameter in most of the applications. This paper presents the analysis of the effects of the longitudinal movement on the performance of small-scale linear Fresnel reflectors. Our design, patented in year 2017, shows to be really innovative when compared to the existing designs shown in the literature. The three-movement option marks the novelty of the design. The effect of three parameters (i.e. energy absorbed by the absorber tube, primary cost, and reflector area ratio) is evaluated for two locations in Europe. Different configurations are analyzed and compared with the typical configuration of a large-scale linear Fresnel reflector. Numerical simulations were carried out using a MATLAB code to calculate the energy absorbed by the absorber tube, the primary cost, and the reflector area ratio. The comparison of the configurations provided insight into how latitude impacts on the results. It will be demonstrated that both the energy absorbed by the absorber tube and the primary cost increase with longitudinal movement, while the reflector area ratio decreases. (C) 2019 Elsevier Ltd. All rights reserved.