NDLI: Power Conversion System (PCS) Options for Generation IV Nuclear Plant

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Persson, Jenny Anthony, J. Donaldson
Copyright Year	2009
Abstract	The next stage of Generation IV High Temperature Gas-Cooled Reactor (HTGR) is currently under development for production of electricity and process heat. High outlet temperature of the helium coolant makes it possible to use gas turbines in future power conversion systems. This paper compares the costs and risks of various direct and indirect power conversion systems to evaluate the best commercial electricity generation option. It concludes that, although a direct cycle was predicted to be more efficient, a significant cost and risk reduction will be achieved for an indirect cycle for the near term commercial electricity generating plant. The indirect Combined Cycle Gas Turbine (CCGT) cycle offers excellent efficiency, together with lowest risk and cost for the near term commercial plant. This combines a gas turbine of low-risk design with a current technology steam system. However, the intermediate heat exchanger (IHX) represents a major development item and also introduces some major risks. The implications of the IHX risks have not been fully assessed. In the longer term, when development of high risk and high cost components such as electro-magnetic bearings are more mature, a direct cycle may merit reconsideration on the grounds of elegance and simplicity, in particular a direct Brayton cycle.
Sponsorship	Nuclear Engineering Division
Starting Page	925
Ending Page	933
Page Count	9
File Format	PDF
ISBN	9780791843512
DOI	10.1115/ICONE17-75796
e-ISBN	9780791838525
Volume Number	Volume 1: Plant Operations, Maintenance, Engineering, Modifications and Life Cycle; Component Reliability and Materials Issues; Next Generation Systems
Conference Proceedings	17th International Conference on Nuclear Engineering
Language	English
Publisher Date	2009-07-12
Publisher Place	Brussels, Belgium
Access Restriction	Subscribed
Subject Keyword	Cycles Temperature Combined cycle gas turbines Bearings Risk reduction Risk Brayton cycle Heat exchangers Helium Design Electric power generation Heat Gas turbines Very high temperature reactors Steam Coolants Power stations Nuclear power stations Power conversion systems
Content Type	Text
Resource Type	Article

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