Economic optimization of low-flow solar domestic hot water plants

详细信息    查看全文

• 作者：Cardinale ; N. ; Piccininni ; F. ; Stefanizzi ; P.
• 关键词：Domestic hot water ; Solar fraction ; Simulation ; Plate heat exchanger ; Photovoltaic pump ; Life cycle savings
• 刊名：Renewable Energy
• 出版年：2003
• 出版时间：October, 2003
• 年：2003
• 卷：28
• 期：12
• 页码：1899-1914
• 全文大小：146 K

文摘

A solar plant for hot-water production was investigated by the dynamic simulation code (TRNSYS). A typical daily home consumption for a 4 persons family was considered. The hot-water demand temperature (53 °C) is controlled by a conventional fuel auxiliary heater and a tempering valve. A heat-exchanger is considered between collector and storage tank. The fluids circulate by pumps activated by photovoltaic panels. This simplifies plant control systems and allows for stand-alone utilization of the plant. Annual energy performance, in terms of solar fraction, was calculated for three Italian localities. The economic viability of such a plant was evaluated with the life cycle savings (LCS) method, considering three conventional fuels (Gas-Oil, LPG and Electricity). Italian Government incentives show an economic viability only in comparison with electrical energy.