Journal
PROCEEDINGS OF THE SOLARPACES 2013 INTERNATIONAL CONFERENCE
Volume 49, Issue -, Pages 1165-1176Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.egypro.2014.03.126
Keywords
Direct steam generation (DSG); internal reheat; direct reheat; power block; efficiency
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The increase of the process temperature of concentrating solar power plants above the degradation temperature of thermal oil (400 degrees 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. (C) 2013 The Authors. Published by Elsevier Ltd.
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