NDLI: Heat-Transfer at Supercritical Pressures

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Pioro, Igor
Copyright Year	2010
Abstract	The first works devoted to the problem of heat transfer at supercritical pressures started as early as the 1930s. E. Schmidt and his associates investigated free-convection heat transfer to fluids at the near-critical point with the objective of developing a new effective cooling system for turbine blades in jet engines. In the 1950s, the idea of using supercritical “steam”-water appeared to be rather attractive for steam generators / turbines to increase thermal efficiency of fossil-fired power plants. Intensive work on this subject was mainly performed in the former USSR and in the USA in the 1950s–1980s. Therefore, the most investigated flow geometry at supercritical pressures is circular tubes with water as the coolant. Currently, using supercritical “steam” in fossil-fired power plants is the largest industrial application of fluids at supercritical pressures. At the end of the 1950s and the beginning of the 1960s, some studies were conducted to investigate the possibility of using supercritical water as a coolant in nuclear reactors. Several concepts of nuclear reactors were developed. However, this idea was abandoned for almost 30 years, and then regained momentum in the 1990s as a means to improve the performance of water-cooled nuclear reactors. Main objectives of using supercritical water in nuclear reactors are increasing the efficiency of modern nuclear power plants, which is currently 30–35%, to circa 43–50%, and decreasing operational and capital costs by eliminating steam generators, steam separators, steam dryers, etc. Therefore, objectives of the current paper are to assess the work that was performed and to understand specifics of heat transfer at supercritical pressures.
Sponsorship	Heat Transfer Division
Starting Page	369
Ending Page	382
Page Count	14
File Format	PDF
ISBN	9780791849422
DOI	10.1115/IHTC14-23403
e-ISBN	9780791838792
Volume Number	2010 14th International Heat Transfer Conference, Volume 7
Conference Proceedings	2010 14th International Heat Transfer Conference
Language	English
Publisher Date	2010-08-08
Publisher Place	Washington, DC, USA
Access Restriction	Subscribed
Subject Keyword	Water Turbine blades Boilers Cooling systems Momentum Natural convection Flow (dynamics) Jet engines Geometry Fluids Dryers Steam Coolants Power stations Nuclear reactors Thermal efficiency Nuclear power stations Heat transfer Turbines
Content Type	Text
Resource Type	Article

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Effects of Various Parameters on Supercritical-Pressure Heat Transfer and Limits for Heat Transfer Correlations Obtained in Vertical Bare Tubes

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Heat-Transfer at Supercritical Pressures

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