Abstract
The paper discusses a supply and demand scenario using renewable energy sources for the city El Gouna in Egypt as an example for a self-supplying community. All calculations are based on measured meteorological data and real power demand during the year 2013. The modeled energy system consists of a concentrating solar tower plant with thermal storage and low-temperature seawater desalination unit as well as an integrated photovoltaic plant and a wind turbine. The low-temperature desalination unit has been newly developed in order to enable the utilization of waste heat from power conversion processes by improved thermal efficiency. In the study, special attention is given to the surplus power handling generated by the photovoltaic and wind power plant. Surplus power is converted into heat and stored in the thermal storage system of the solar power plant in order to increase the capacity factor. A brief estimation of investment costs have been conducted as well in order to outline the economic performance of the modeled energy and water supply system.
Highlights
The negative effects of the climate change become more evident and the increasing population in some parts of the world is accompanied by an escalating energy and water demand
This paper focuses on the integration of a concentrating solar power (CSP) plant with attached thermal seawater desalination [3,4] into a real demand scenario of a city in Egypt and the assessment to what extent the energy and water demand can be covered by this technology
One common approach is the use of the levelized cost of electricity (LCOE) to compare different renewable energy technologies [29,30]
Summary
The negative effects of the climate change become more evident and the increasing population in some parts of the world is accompanied by an escalating energy and water demand. The global energy demand is expected to rise by two-thirds of today’s demand to the year 2035 [1,2]. Up to now, this demand has mainly been satisfied by fossil fuels with unpredictable cost development. The renewable energy generation can solve at least the dependencies of fossil energy carriers It requires high financial and research effort to develop the respective technologies. This paper focuses on the integration of a concentrating solar power (CSP) plant with attached thermal seawater desalination [3,4] into a real demand scenario of a city in Egypt and the assessment to what extent the energy and water demand can be covered by this technology. The financial conditions need to be carefully considered in order to evaluate the local electricity and water market for the development of respective demand scenarios
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