论文信息 - A systematic comparison on power block efficiencies for CSP plants with direct steam generation

A systematic comparison on power block efficiencies for CSP plants with direct steam generation

The increase of the process temperature of concentrating solar power plants above the degradation temperature of thermal oil (400 °C) opens the way for increased power block efficiency and thus reduced cost of electricity production. Direct solar steam generation is one technical option to follow this path. The paper presents different power block designs for direct steam generation parabolic trough and linear Fresnel power plants. Based on a systematic modelling approach, results for efficiency gains are derived and compared against a reference case of an oil-based plant. The results show that different reheat configurations are feasible and that efficiency gains in the range from 4 to 6% can be expected based on todays or near future solar collector technology.

Tobias Hirsch | Abdallah Khenissi | T. Hirsch | Abdallah Khenissi

[1] Jan Fabian Feldhoff,et al. Experiences with Direct Steam Generation at the Kanchanaburi Solar Thermal Power Plant , 2012 .

[2] Markus Eck,et al. A direct steam generation solar power plant with integrated thermal storage , 2010 .

[3] Jan Fabian Feldhoff,et al. Comparative system analysis of direct steam generation and synthetic oil parabolic trough power plants with integrated thermal storage , 2012 .

[4] Markus Eck,et al. Direct Steam Generation in parabolic troughs at 500°C - first results of the REAL-DISS project , 2011 .

[5] Jan Fabian Feldhoff,et al. Economic Potential of Solar Thermal Power Plants With Direct Steam Generation Compared With HTF Plants , 2010 .