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contributor authorDoerte Laing
contributor authorCarsten Bahl
contributor authorThomas Bauer
contributor authorDorothea Lehmann
date accessioned2017-05-09T00:40:47Z
date available2017-05-09T00:40:47Z
date copyrightMay, 2010
date issued2010
identifier issn0199-6231
identifier otherJSEEDO-28428#021011_1.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/144787
description abstractFor future parabolic trough plants direct steam generation in the absorber pipes is a promising option for reducing the costs of solar thermal power generation. These new solar thermal power plants require innovative storage concepts, where the two-phase heat transfer fluid poses a major challenge. A three-part storage system is proposed where a phase change material (PCM) storage will be deployed for the two-phase evaporation, while concrete storage will be used for storing sensible heat, i.e., for preheating of water and superheating of steam. A pinch analysis helps to recognize interface constraints imposed by the solar field and the power block and describes a way to dimension the latent and sensible components. Laboratory test results of a PCM test module with ∼140 kgNaNO3, applying the sandwich concept for enhancement of heat transfer, are presented, proving the expected capacity and power density. The concrete storage material for sensible heat was improved to allow the operation up to 500°C for direct steam generation. A storage system with a total storage capacity of ∼1 MWh is described, combining a PCM module and a concrete module, which will be tested in 2009 under real steam conditions around 100 bars.
publisherThe American Society of Mechanical Engineers (ASME)
titleDevelopment of a Thermal Energy Storage System for Parabolic Trough Power Plants With Direct Steam Generation
typeJournal Paper
journal volume132
journal issue2
journal titleJournal of Solar Energy Engineering
identifier doi10.1115/1.4001472
journal fristpage21011
identifier eissn1528-8986
keywordsHeat
keywordsTemperature
keywordsConcretes
keywordsSteam
keywordsStorage
keywordsWater
keywordsThermal energy storage
keywordsParabolic troughs
keywordsEvaporation
keywordsPower stations AND Superheating
treeJournal of Solar Energy Engineering:;2010:;volume( 132 ):;issue: 002
contenttypeFulltext


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