Exergoeconomic analysis of a novel concentrated solar energy for lighting-power generation combined system based on spectral beam splitting

Lighting-power generation combined system (LIPGECOS) based on the approach of spectral beam splitting of concentrating solar radiation was introduced and performed exergoeconomic analysis by well-known the Specific Exergy Costing (SPECO) method. From the experimental data, the average energy and exergy efficiencies of the LIPGECOS were calculated as 0.15 and 0.09 respectively. The cost flows for concentrating dish, fibre optic bundle (FOB), cold mirror and Stirling engine were calculated as $0.016, $0.055, $0.040 and $0.018 in daily basis, respectively. The maximum exergetic cost coefficient belongs to the FOB component, while the minimum exergetic cost coefficient was calculated for the concentrating dish. Exergetic cost coefficients for the products of the dish, the mirror, the FOB and the Stirling engine are calculated as 1.07; 65.12; 199.47; 71.01 $/GJ, respectively. The maximum exergetic cost effectiveness (ECE) value is calculated for the dish as 0.1234; while the minimum one is for the mirror as 0.0000002.