Comparison of Solar Photovoltaic and Photothermal Domestic Hot Water Systems

摘要

Solar domestic hot water (DHW) systems with photovoltaic modules have appeared on the solar market forrnbuildings in recent years. Presented energy and economic analysis compares the competing photovoltaic andrnphotothermal systems for domestic hot water preparation at identical load and climate conditions. Results havernshown that given simple photovoltaic DHW only systems despite the significant cost reduction of photovoltaicrntechnology in last decade still cannot economically compete with solar thermal DHW systems due to worsernperformance.