The Modular Helium Reactor (MHR) is a strong candidate for VHTR design. It is suitable to adapt MHR operating conditions to VHTR operating conditions. An increased coolant outlet temperature directly drives an increase in the peak fuel temperature. One of the biggest concerns in the improvement of the VHTR is an undesirable peak fuel ...

A novel gas turbine-modular helium reactor/new Kalina cycle is proposed. • Exergoeconomic analysis is performed for the combined cycle. • The product unit cost is reduced by 11.3% by waste heat utilization. • Augmented Kalina cycle performs better than Kalina cycle 34 economically. • Exergy efficiency of gas turbine-modular helium ...

The Gas Turbine-Modular Helium Reactor (GT-MHR) is the result of coupling the evolution of a low power density passively safe modular reactor with key technology developments in the U.S. during the last decade: large industrial gas turbines; large active magnetic bearings; and compact, highly effective plate-fin heat exchangers.

The modular helium reactor (MHR), which is a thermal reactor that can be used both for hydrogen and electricity production in modules of 600 MWth. Its core consists of …

The HTGR design option being advanced by General Atomics for the NGNP demonstration plant, and for follow-on commercial deployment, is the Steam Cycle Modular Helium Reactor (SC-MHR). The SC-MHR, which is the subject of this paper, uses fuel elements in the form of hexagonal blocks, which are stacked together to form the reactor …

@article{osti_885771, title = {Deep-Burn Modular Helium Reactor Fuel Development Plan}, author = {McEachern, D}, abstractNote = {This document contains the workscope, schedule and cost for the technology development tasks needed to satisfy the fuel and fission product transport Design Data Needs (DDNs) for the Gas Turbine …

For electricity and hydrogen production, an advanced reactor technology receiving considerable international interest is a modular, passively-safe version of the high …

The Gas Turbine Modular Helium Reactor (GT-MHR) uses two compression stages to compress the helium and a pre-cooler and an intercooler to reduce the compressors inlet temperature, that dissipate ...

For electricity and hydrogen production, an advanced reactor technology receiving considerable international interest is a modular, passively-safe version of the high-temperature, gas-cooled reactor (HTGR), known in the U.S. as the Modular Helium Reactor (MHR), which operates at a power level of 600 MW(t).

The Gas Turbine-Modular Helium Reactor (GT-MHR) is the result of coupling the evolution of a low power density passively safe modular reactor with key technology developments in the U.S. during the last decade: large industrial gas turbines; large active magnetic bearings; and compact, highly effective plate-fin heat exchangers.

A Gas Turbine-Modular Helium Reactor (GT-MHR) is a 600 MW t helium cooled high temperature reactor with increased efficiency (up to 47% [14]), which is designed to operate with different kinds of fuels.Each reactor module is composed of two parts. First part is the reactor, where the nuclear fission takes place and helium is …

The gas turbine modular helium reactor GT-MHR is one of fourth generation reactors studied in the world. It is a graphite-moderated helium-cooled reactor designed in the United States during the ...

Beyond their power generation benefits, the modular helium reactors can be used in the destruction of weapons grade plutonium. The gas turbine modular helium reactor has the ability to destroy 90% of weapons …

The study began with an analysis of the current 600 MWt GT-MHR (Gas Turbine-Modular Helium Reactor). The numerical model was validated by other studies. Then, three alternative operating ...

8.5 Summary. HTGRs are thermal neutron reactors with helium coolant, graphite moderator, and fully ceramic-coated particle fuel elements that can reach an exit temperature of 700°C–1000°C. Developed from early gas-cooled reactors in the 1950s, the latest HTGRs use modular technology, and the next step in development is VHTR.

The Gas Turbine-Modular Helium Reactor (GT-MHR) is a new turbine generating system powered by a passiVely-safe nuclear reactor. It eliminates the need to make steam to produce electricity, and frees us from the pollution and waste" of fossil-fuel generating plants. It could also help to

EM 2 is a helium-cooled fast reactor with a core outlet temperature of 850°C. It is designed as a modular, grid-capable power source with a net unit output of 265 MWe. The reactor employs a "convert and burn" core …

The Xe-100 is an advanced modular reactor with each unit designed to produce around 76 megawatts of electric power. The reactor core is made of graphite and filled with 15.5% enriched fuel pebbles. Each pebble (roughly the size of a billiard ball) contains thousands of specially coated Tristructural Isotropic (TRISO) uranium fuel …

The Gas Turbine – Modular Helium Reactor (GT-MHR) is an advanced nuclear power system that offers unparalleled safety, high thermal efficiency, environmental advantages, and competitive electricity generation costs. The GT-MHR module couples a gas-cooled modular helium reactor (MHR) with a high efficiency modular Brayton cycle gas …

The Gas Turbine-Modular Helium Reactor (GT-MHR) is the result of coupling the evolution of a low power density passively safe modular reactor with key technology …

Small Modular Reactors (SMRs) The IAEA defines SMRs as advanced nuclear reactors that have a power capacity of up to 300 MW(e) per unit, which is about one …

Therefore Modular Helium Reactor (MHR), one of these HTR designs is a strong candidate for the thermochemical splitting of water into hydrogen and oxygen, which operate within the 750–1000 °C range [14], [15], [16]. There are popular simplified computational models to analyze analytically prismatic reactors.

A detailed exergoeconomic analysis is performed for a combined cycle in which the waste heat from the Gas Turbine-Modular Helium Reactor (GT-MHR) is recovered by an ammonia–water power/cooling cogeneration system. Parametric investigations are conducted to evaluate the effects of decision variables on the …

Nuclear Safety Design Process for Modular Helium-Cooled Reactor Plants. This standard applies to the safety design process for plants. This standard provides a process for establishing top-level safety criteria; safety functions; top-level design criteria; licensing-basis events; design-basis accidents; safety classification of systems ...

The resulting Gas Turbine Modular Helium Reactor (GT-MHR) power plant combines the high temperature capabilities of the MHR with the efficiency and reliability of modern gas turbines. While the passive safety features of the steam cycle MHR (SC-MHR) are retained, generation efficiencies are projected to be in the range of 48% and steam …

The Gas Turbine Modular Helium Reactor (GT-MHR) can effectively destroy surplus weapons grade plutonium, consuming more than 90% of the initially charged …

The Gas Turbine - Modular Helium Reactor (GT-MHR) couples a high temperature gas cooled reactor (HTGR) with a Brayton power conversion cycle to produce electricity at high efficiency. Because of its capability to produce high coolant outlet temperatures (at least 850 deg. C with potential for still higher temperature), the modular …

The Gas Turbine – Modular Helium Reactor (GT-MHR) is an advanced nuclear power system that offers unparalleled safety, high thermal efficiency, environmental …

The Gas Turbine – Modular Helium Reactor (GT MHR) is an advanced gas-cooled reactor currently under development in a joint United States – Russian Federation program to provide capacity for disposition of surplus weapons plutonium. The GT-MHR is designed to provide very high safety, high thermal efficiency and environmental advantages.

The high-temperature gas-cooled reactor (HTGR), which based on the closed Brayton cycle with helium as the working fluid, is one of the most promising fourth-generation nuclear reactors ( Zhang and Yu, 2002, Muto et al., 1998, Crommelin, 2004 ). The turbine inlet temperature can be increased up to 900 °C with a direct helium cycle, …