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Solar application of TopSpool gas turbine concept
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology. (Solar Explore)
2011 (English)Independent thesis Advanced level (degree of Master (Two Years)), 30 credits / 45 HE creditsStudent thesis
Abstract [en]

The TopSpool gas turbine concept has been proposed as a high efficiency – lower cost alternative to combined cycles for power generation. In the TopSpool concept, a dual gas turbine system comprising separate low pressure and high pressure turbines with steam injection is proposed.

An initial technical and economical comparison was performed between the TopSpool cycle concept and a combined cycle for power generation in a configuration of power tower concentrated solar power plant.

A steady state model was developed and updated and used to evaluate which of the technologies can generate power at the lower levelized cost of electricity. The model includes a thermodynamic calculation of the power cycles, calculation of the solar field and receiver, fluid transport pipes, and economical evaluation based on the levelized cost of electricity. Some particular design aspects have been addressed preliminarily and suggestions for further development are proposed.

The results show that the TopSpool configuration can offer higher efficiency, higher annual solar share and lower levelized cost of electricity compared to a combined cycle configuration. The main limiting factor is the rate of supplementary firing, which is directly influenced by the solar receiver outlet temperature.

Place, publisher, year, edition, pages
Keyword [en]
Concentrated solar power, TopSpool, combined cycle.
National Category
Engineering and Technology
URN: urn:nbn:se:kth:diva-34752OAI: diva2:423277
Subject / course
Energy Technology
Educational program
Master of Science - Sustainable Energy Engineering
Available from: 2011-07-12 Created: 2011-06-15 Last updated: 2011-09-05Bibliographically approved

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Estrada, Juan Sebastián
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