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What is Pseudocritical Point

Chapter 17
Handbook of Research on Advancements in Supercritical Fluids Applications for Sustainable Energy Systems
(Characterized with P and T pc ) is the point at a pressure above the critical pressure and at a temperature ( T pc > T cr ) corresponding to the maximum value of specific heat at this particular pressure.
Published in Chapter:
Application of Supercritical Fluids in Thermal- and Nuclear-Power Engineering
Igor L. Pioro (University of Ontario Institute of Technology, Canada)
Copyright: © 2021 |Pages: 58
DOI: 10.4018/978-1-7998-5796-9.ch017
Abstract
Supercritical Fluids (SCFs) have unique thermophyscial properties and heat-transfer characteristics, which make them very attractive for use in power industry. In this chapter, specifics of thermophysical properties and heat transfer of SCFs such as water, carbon dioxide, and helium are considered and discussed. Also, particularities of heat transfer at Supercritical Pressures (SCPs) are presented, and the most accurate heat-transfer correlations are listed. Supercritical Water (SCW) is widely used as the working fluid in the SCP Rankine “steam”-turbine cycle in fossil-fuel thermal power plants. This increase in thermal efficiency is possible by application of high-temperature reactors and power cycles. Currently, six concepts of Generation-IV reactors are being developed, with coolant outlet temperatures of 500°C~1000°C. SCFs will be used as coolants (helium in GFRs and VHTRs, and SCW in SCWRs) and/or working fluids in power cycles (helium, mixture of nitrogen (80%) and helium (20%), nitrogen and carbon dioxide in Brayton gas-turbine cycles, and SCW/“steam” in Rankine cycle).
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Chapter 5
Effect of Flow Acceleration and Buoyancy on Thermalhydraulics of sCO2 in Mini/Micro-Channel
It is defined as the point at which specific heat of the supercritical fluid reaches its peak value.
Published in Chapter: Effect of Flow Acceleration and Buoyancy on Thermalhydraulics of sCO2 in Mini/Micro-Channel; From: Handbook of Research on Advancements in Supercritical Fluids Applications for Sustainable Energy Systems
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Chapter 19
The Basic Thermal Hydraulic Issues of Applying Supercritical Fluid to Nuclear Reactors
The point at a pressure above the critical pressure and at a temperature where the specific heat capacity reaches its maximum value at this particular pressure.
Published in Chapter: The Basic Thermal Hydraulic Issues of Applying Supercritical Fluid to Nuclear Reactors; From: Handbook of Research on Advancements in Supercritical Fluids Applications for Sustainable Energy Systems
Full Text Chapter Download: US $37.50 Add to Cart
Chapter 13
Study on Cooling Heat Transfer of Supercritical Carbon Dioxide Applied to Transcritical Carbon Dioxide Heat Pump
A point at a pressure above the critical pressure and at a temperature corresponding to the maximum value of the specific heat at this particular pressure.
Published in Chapter: Study on Cooling Heat Transfer of Supercritical Carbon Dioxide Applied to Transcritical Carbon Dioxide Heat Pump; From: Handbook of Research on Advancements in Supercritical Fluids Applications for Sustainable Energy Systems
Full Text Chapter Download: US $37.50 Add to Cart
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