Akademik Veri Yönetim Sistemi
Applied Thermal Engineering, cilt.298, 2026 (SCI-Expanded, Scopus)
This study proposes a novel solar-powered residential multi-generation system integrating solar energy with waste heat from flue gas of a natural gas-fired combi boiler and electricity generation via thermoelectric generators (TEGs). Waste heat from the boiler flue gas and the condenser outlet of the cooling subsystem is recovered using specially designed heat exchangers containing phase change materials (PCMs) and used in a thermoelectric generator package (TEGP) for thermal energy storage and electricity generation. A novel TEGP configuration has been developed to improve waste heat recovery and electricity generation. Thermodynamically, the parabolic trough collector (PTC) demonstrates the highest performance with energy efficiency of 64.42%, and exergy efficiency of 7.29%, while the evacuated tube collector (ETC) provides the best economic performance with a Net Present Value (NPV) of 1795.41 US$. The proposed system has been further optimized using a multi-criteria decision-making approach. For the optimal configuration, ETC type collectors with 17 collectors, an evaporator temperature of −2 °C, a generator temperature of 80 °C, and 25 thermoelectric generators were used. Under these conditions, the system achieved an energy efficiency of 34.43% and an exergy efficiency of 5.09%, with a total cost of 2450 US$, net electricity production of 35.23 kWh/year, CO₂ emissions of 12,696 tons/year, and NPV of 1795.41 US$. The results demonstrate that the proposed hybrid configuration offers a promising solution for improving energy efficiency, economic viability, and environmental sustainability in residential energy systems, particularly in regions with relatively low solar radiation.