scholarly journals NUCLEAR CONSIDERATIONS IN DESIGN OF HIGH-TEMPERATURE PROCESS-HEAT REACTORS

1957 ◽  
Author(s):  
J T Roberts
Keyword(s):  
High Temperature ◽  
High Temperature Process ◽  
Process Heat

scholarly journals Solar Cogeneration of Electricity with High-Temperature Process Heat

2020 ◽  
Vol 1 (8) ◽  
pp. 100135 ◽  
Author(s):  
Daniel S. Codd ◽  
Matthew D. Escarra ◽  
Brian Riggs ◽  
Kazi Islam ◽  
Yaping Vera Ji ◽  
...  
Keyword(s):  
High Temperature ◽  
High Temperature Process ◽  
Process Heat

Advanced Nuclear Process Heat Concepts and Applications

2006 ◽  
Author(s):  
Reiner W. Kuhr ◽  
Charles Bolthrunis ◽  
Michael Corbett ◽  
Ed Lahoda
Keyword(s):  
High Temperature ◽  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Carbon Utilization ◽  
Nuclear Process ◽  
High Temperature Process ◽  
Process Plant ◽  
Screening Study ◽  
Process Heat

This paper presents a summary of a screening study to select the most advantageous applications for nuclear process heat. The review is focused on the application of the Pebble Bed Modular Reactor (PBMR) technology adapted for process heat applications. This technology is unique in its smaller modular size and ability to deliver high temperature process heat at conditions that allow higher value applications. The implementation of projects for nuclear process heat and hydrogen production will require collaboration between nuclear power plant operators and process plant owners who will benefit from lower costs of heat delivery. Heat and hydrogen from nuclear water splitting can be used to displace expensive fuels, extend carbon utilization for products and reduce CO2 emissions and other environmental impacts.

VHTR-Based Systems for Autonomous Co-Generation Applications

2008 ◽  
Author(s):  
Pavel V. Tsvetkov ◽  
David E. Ames ◽  
Ayodeji B. Alajo ◽  
Tom G. Lewis
Keyword(s):  
High Temperature ◽  
District Heating ◽  
Fuel Component ◽  
Power Stations ◽  
High Temperature Process ◽  
Nuclear Systems ◽  
Cogeneration System ◽  
Process Heat ◽  
Conversion Efficiencies ◽  
Core Self

As highly efficient advanced nuclear systems, Generation IV Very High Temperature Reactors (VHTR) can be considered in a variety of configurations for electricity generation and process heat applications. Simultaneous delivery of electricity, low-temperature process heat (for potable water production, district heating, etc.) and high temperature process heat (for hydrogen production, etc.) by a single cogeneration system offers unique deployment options as “all-in-one” power stations. This paper is focused on the VHTR-based systems for autonomous co-generation applications. The analysis is being performed within the scope of the U.S. DOE NERI project on utilization of higher actinides (TRUs and partitioned MAs) as a fuel component for extended-life VHTR configurations. It accounts for system performance characteristics including VHTR physics features, control options and energy conversion efficiencies. Utilization of TRUs in VHTRs is explored to stabilize in-core fuel compositions (core self-stabilization) leading to extended single-batch OTTO (Once-Through-Then-Out) modes of operation without intermediate refueling.

scholarly journals Thermal analysis of heat and power plant with high temperature reactor and intermediate steam cycle

2015 ◽  
Vol 36 (1) ◽  
pp. 3-18
Author(s):  
Adam Fic ◽  
Jan Składzień ◽  
Michał Gabriel
Keyword(s):  
Thermal Analysis ◽  
High Temperature ◽  
Heat Exchanger ◽  
Power Plant ◽  
Heat Pump ◽  
Nuclear Reactor ◽  
Temperature Level ◽  
High Temperature Process ◽  
Process Heat ◽  
Steam Cycle

Abstract Thermal analysis of a heat and power plant with a high temperature gas cooled nuclear reactor is presented. The main aim of the considered system is to supply a technological process with the heat at suitably high temperature level. The considered unit is also used to produce electricity. The high temperature helium cooled nuclear reactor is the primary heat source in the system, which consists of: the reactor cooling cycle, the steam cycle and the gas heat pump cycle. Helium used as a carrier in the first cycle (classic Brayton cycle), which includes the reactor, delivers heat in a steam generator to produce superheated steam with required parameters of the intermediate cycle. The intermediate cycle is provided to transport energy from the reactor installation to the process installation requiring a high temperature heat. The distance between reactor and the process installation is assumed short and negligable, or alternatively equal to 1 km in the analysis. The system is also equipped with a high temperature argon heat pump to obtain the temperature level of a heat carrier required by a high temperature process. Thus, the steam of the intermediate cycle supplies a lower heat exchanger of the heat pump, a process heat exchanger at the medium temperature level and a classical steam turbine system (Rankine cycle). The main purpose of the research was to evaluate the effectiveness of the system considered and to assess whether such a three cycle cogeneration system is reasonable. Multivariant calculations have been carried out employing the developed mathematical model. The results have been presented in a form of the energy efficiency and exergy efficiency of the system as a function of the temperature drop in the high temperature process heat exchanger and the reactor pressure.

PBMR as an Ideal Heat Source for High-Temperature Process Heat Applications

2006 ◽  
Author(s):  
Michael Correia ◽  
Renee´ Greyvenstein ◽  
Fred Silady ◽  
Scott Penfield
Keyword(s):  
High Temperature ◽  
Heat Source ◽  
Oil Sands ◽  
Generation Process ◽  
Steam Methane ◽  
High Temperature Process ◽  
Process Plant ◽  
Process Heat ◽  
Oil Sands Bitumen ◽  
Cycle Efficiency

The Pebble Bed Modular Reactor (PBMR) is an advanced helium-cooled, graphite-moderated High Temperature Gas-cooled Reactor (HTGR). A 400 MWt PBMR Demonstration Power Plant (DPP) for the production of electricity is being developed in South Africa. This PBMR technology is also an ideal heat source for process heat applications, including Steam Methane Reforming, steam for Oil Sands bitumen recovery, Hydrogen Production and co-generation (process heat and/or electricity and/or process steam) for petrochemical industries. The cycle configuration used to transport the heat of the reactor to the process plant or to convert the reactor’s heat into electricity or steam directly influences the cycle efficiency and plant economics. The choice of cycle configuration depends on the process requirements and is influenced by practical considerations, component and material limitations, maintenance, controllability, safety, performance, risk and cost. This paper provides an overview of the use of a PBMR reactor for process applications and possible cycle configurations are presented for applications which require high temperature process heat and/or electricity.

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