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A Viable Megawatt-Class Space Power Plant under Rankine Cycle

Journal of Energy and Power Engineering 2012年第5期6卷 683-694页

作者： ramon ferreiro garcia Department of Industrial Engineering University of A Coruna .4 Coruna 15011 Spain

The aim of the article concerns to the achieved research results regarding the viability of a megawatt-class space power plant based on the Rankine cycle for which the main objectives are to highlight the key issues responsible for improving the Rankine cycle efficiency. Two working fluids are studied （water and ammonia） on the basis of its well known characteristics. Cycles operating under top and bottom temperatures approaching the state of the art technology associated to cooling fluid reservoirs are key to improve the efficiency. With such strategy, the achieved thermal efficiency increases more than 20% with respect to conventional power plants. Mentioned benefits associated to the strategy based on the reduction of the required payload capacity, the condenser radiation surface and the power plant mass represent the main advantages of the proposed innovation techniques.

关键词： Concentrated solar power cycle efficiency energy conversion organic Rankine cycle Rankine cycle solar dynamicpower system.

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Preliminary Design Study on Concentrated Solar Power PVRs to Operate with RCBC

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Journal of Energy and Power Engineering 2013年第1期7卷 88-95页

作者： ramon ferreiro garcia Manuel Romero Gomezt Alberto DeMiguel Catoira Javier Romero Gomez Industrial Engineering Department E.T.S.N.M. A Coruna University A Coruna 15011 Spain Energy and Propulsion Department E.T.S.N.M. A Coruna University A Coruna 15011 Spain

Parabolic through concentrators and parabolic dish concentrators followed by a PVR （pressurized volumetric receiver） are proposed, studying the performance behavior of a RCBC （regenerative closed Brayton cycle） operating with helium or hydrogen. A pressurized gas such as helium circulates along the volumetric receiver, capturing the concentrated thermal solar energy to be further converted into electric power via a thermal cycle. The overall efficiency of the plant has been computed under variable parameters to determine the operating conditions for which efficiency and specific power are acceptable. As consequence of the proposed analysis, it is concluded that direct coupling between volumetric receivers and thermal engines renders high efficiency while avoiding an intermediate heat transfer medium.

关键词： Closed Brayton cycle concentrated solar power parabolic dish parabolic through volumetric receiver thermal efficiency working fluid.

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