IHX Design and Development for the Next Generation Nuclear Plant

2008 ◽  
Author(s):  
Scott R. Penfield ◽  
Renee Greyvenstein ◽  
Phillip L. Rittenhouse ◽  
James Nash
Keyword(s):  
Technology Development ◽  
Nuclear Plant ◽  
Operating Conditions ◽  
Design And Technology ◽  
Next Generation ◽  
Thin Sections ◽  
Compact Heat Exchangers ◽  
Corrosion Rates ◽  
Intermediate Heat Exchanger

This paper summarizes the results of a conceptual design study addressing the design and technology development requirements for a high-temperature intermediate heat exchanger (IHX) for the Next Generation Nuclear Plant (NGNP). Results of the study confirmed the incentives for compact heat exchangers and suggested new IHX configurations that provide for maintainability at the heat transfer module level. Scoping analyses provided encouragement that IHX life would not be limited by creep or fatigue effects, given the PBMR NGNP Heat Transport System architecture and operating conditions. However, corrosion rates implied by existing data are troubling for thin sections, and improved characterization of environmental effects was identified as a high priority for technology development.

scholarly journals Design Option of Heat Exchanger for the Next Generation Nuclear Plant

2008 ◽  
Author(s):  
Chang H. Oh ◽  
Eung S. Kim
Keyword(s):  
Heat Exchanger ◽  
System Integration ◽  
Power Conversion ◽  
Nuclear Plant ◽  
Design And Technology ◽  
Production Plant ◽  
Next Generation ◽  
Tube Heat Exchanger ◽  
Intermediate Heat Exchanger ◽  
Hydrogen Plant

The Next Generation Nuclear Plant (NGNP), a very High temperature Gas-Cooled Reactor (VHTR) concept, will provide the first demonstration of a closed-loop Brayton cycle at a commercial scale, producing a few hundred megawatts of power in the form of electricity and hydrogen. The power conversion unit (PCU) for the NGNP will take advantage of the significantly higher reactor outlet temperatures of the VHTRs to provide higher efficiencies than can be achieved with the current generation of light water reactors. Besides demonstrating a system design that can be used directly for subsequent commercial deployment, the NGNP will demonstrate key technology elements that can be used in subsequent advanced power conversion systems for other Generation IV reactors. In anticipation of the design, development and procurement of an advanced power conversion system for the NGNP, the system integration of the NGNP and hydrogen plant was initiated to identify the important design and technology options that must be considered in evaluating the performance of the proposed NGNP. As part of the system integration of the VHTRs and the hydrogen production plant, the intermediate heat exchanger is used to transfer the process heat from VHTRs to the hydrogen plant. Therefore, the design and configuration of the intermediate heat exchanger is very important. This paper will include analysis of one stage versus two stage heat exchanger design configurations and simple stress analyses of a printed circuit heat exchanger (PCHE), helical coil heat exchanger, and shell/tube heat exchanger.

scholarly journals Design Option of Heat Exchanger for the Next Generation Nuclear Plant

2009 ◽  
Vol 132 (3) ◽  
Author(s):  
Chang H. Oh ◽  
Eung S. Kim ◽  
Mike Patterson
Keyword(s):  
Heat Exchanger ◽  
System Integration ◽  
Power Conversion ◽  
Nuclear Plant ◽  
Design And Technology ◽  
Production Plant ◽  
Next Generation ◽  
Tube Heat Exchanger ◽  
Intermediate Heat Exchanger ◽  
Hydrogen Plant

The next generation nuclear plant (NGNP), a very high temperature gas-cooled reactor (VHTR) concept, will provide the first demonstration of a closed-loop Brayton cycle at a commercial scale, producing a few hundred megawatts of power in the form of electricity and hydrogen. The power conversion unit for the NGNP will take advantage of the significantly higher reactor outlet temperatures of the VHTRs to provide higher efficiencies than can be achieved with the current generation of light water reactors. Besides demonstrating a system design that can be used directly for subsequent commercial deployment, the NGNP will demonstrate key technology elements that can be used in subsequent advanced power conversion systems for other Generation IV reactors. In anticipation of the design, development, and procurement of an advanced power conversion system for the NGNP, the system integration of the NGNP and hydrogen plant was initiated to identify the important design and technology options that must be considered in evaluating the performance of the proposed NGNP. As part of the system integration of the VHTRs and the hydrogen production plant, the intermediate heat exchanger is used to transfer the process heat from VHTRs to the hydrogen plant. Therefore, the design and configuration of the intermediate heat exchanger are very important. This paper describes analyses of one stage versus two-stage heat exchanger design configurations and simple stress analyses of a printed circuit heat exchanger (PCHE), helical-coil heat exchanger, and shell-and-tube heat exchanger.

Validation of Next Generation Catalyst Design Incorporating Advanced Materials and Processing Technology

2005 ◽  
Author(s):  
Sarento G. Nickolas ◽  
Philip B. Tuet ◽  
Jon G. McCarty ◽  
Suresh R. Vilayanur ◽  
Alberto E. Boleda ◽  
...  
Keyword(s):  
Performance Test ◽  
Technology Development ◽  
Catalyst Design ◽  
Operating Conditions ◽  
Advanced Materials ◽  
Next Generation ◽  
Load Range ◽  
Turbine Engine ◽  
Electrical Grid ◽  
Module Design

A Kawasaki Heavy Industries M1A-13X gas turbine engine equipped with a Xonon Cool Combustion® System was used to validate performance of a next generation catalyst module design incorporating advanced catalyst materials over 8000 hours of continuous operation. The unit ran unattended, 24 hours a day, 7 days a week connected to the electrical grid. NOx emissions were measured to be less than 2.5 ppm throughout the guaranteed operating load range (70–100%). CO emissions were measured to be less than 10 ppm; typically less than 1ppm across the same load range. The new catalyst module design incorporates features and technology developed during the past several years where durability was a primary focus. Performance test results from previous durability tests were used to develop theoretical predictive models. These models proved invaluable in determining the optimal catalyst formulation as well as the required operating conditions throughout the life of the combustion system. Successful validation of the new catalyst module design has led to incorporation of these advanced materials and design techniques in commercial products and prototype units. It is believed that continued technology development, as well as performance data gathered from field units, will support extending product life beyond the current guarantee of 8000 hours.

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