Performance of a V-trough photovoltaic/thermal concentrator

Abstract

The idea of concentrating solar energy to increase the output of photovoltaic and solar thermal collectors is an area that has received significant attention. In this study, a design model for a V-trough concentrating photovoltaic/thermal solar collector was theoretically analysed and validated with experimental data.The results showed that the V-trough offered improved electrical yields from both concentrating radiation onto the photovoltaic cells and also by actively cooling them. Also, it was shown that the Vtrough could be made of a durable (long life) stainless steel, rather than the more reflective aluminium, while still offering a 25% increase in incident radiation over a typical year. However it was noted that modifications would be needed to improve cooling and to increase the thermal efficiency by reducing heat losses.

A review of concentrated photovoltaic-thermal (CPVT) hybrid solar systems with waste heat recovery (WHR)

“…Various electrical and thermal experiments were carried out to study the performances. Künnemeyer et al [57] presented theoretical and experimental studies on a stationary Vtrough CPVT system. The basic unit of the V-trough solar receiver is shown in Fig.…”

“…The reflector materials were also experimentally investigated, and the tested anodized aluminum and aluminum laminated steel showed no significant dif-ference in yearly output. The steel based reflector seemed an interesting option, although it was considered to be less effective in the previous work [57]. As suggested in Ref.…”

Flat plate solar photovoltaic–thermal (PV/T) systems: A reference guide

“…In the concentrators, the uniformity of solar irradiance is compromised, increasing mismatch losses, and hence, reduced electrical performance which could be overcome, by using diffuse reflectors to increase the concentration [6]. Concentrating the solar radiation using V-trough mirror reflectors, combined with the optimum cooling design, improves the electrical and thermal efficiencies [119]. The electrical and thermal outputs of a low concentrating PV/T system, using Fresnel lens and flat mirrors, was analyzed and increased electrical and thermal output were observed [120].…”

Post Feed-in Scheme Photovoltaic System Feasibility Evaluation in Italy: Sicilian Case Studies

“…For the other cases studied, we predicted that expected cost reductions for PV systems would make electricity production from PV panels more competitive than from other sources, thus allowing them to also achieve grid parity [103]. Moreover, new PV technical solutions, aimed at increasing electrical yield, could decrease LCOE value relative to PV systems [104][105][106]. The results of profitability analysis denoted a high convenience for PV investments, due to net metering that allowed huge savings on energy expenditures.…”