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Specifics of forced-convection heat transfer to supercritical water flowing upward in annular and bundle flow geometries
(2016-08-01)
Since annulus- and bundle-flow geometries impede coolant flow, heat transfer to the coolant would occur differently than in bare tubes. The main objective of this work is to propose and verity a universal method to accurately ...
Conceptual design for a re-entrant type fuel channel for supercritical water-cooled nuclear reactors
(2011-04-01)
Current CANDU-type nuclear reactors use a once-through fuel-channel with an annulus gas insulating it from the moderator. The current reference design for a CANDU-type SuperCritical Water-Cooled Reactor (SCWR) is to eliminate ...
Assessment of FLUENT CFD code as an analysis tool for SCW applications
(2012-08-01)
Chosen as one of six Generation‒IV nuclear-reactor concepts, SuperCritical Water-cooled Reactors (SCWRs) are expected to have high thermal efficiencies within the range of 45 ‒ 50% owing to the reactor‟s high pressures and ...
Electrohydrodynamic enhancement of extraterrestrial capilliary pumped loops for nuclear applications
(2010-12-01)
This work examines electrohydrodynamic enhancement of capillary pump loops (CPL) for use in extraterrestrial nuclear applications. A capillary pump uses capillary action through a porous wick to transport heat and mass. ...
Study on supercritical fluids in an intermediate heat exchanger for an SCWR hydrogen cogeneration system
(2015-12-01)
SuperCritical Water-cooled Reactors (SCWRs) are one of six Generation-IV nuclear reactor concepts under development worldwide. SCWRs benefit from an increase in thermal efficiency due to the reactor coolant operating above ...
Second law analysis of a liquid cooled battery thermal management system for hybrid and electric vehicles
(2010-08-01)
As hybrid and electric vehicles continue to evolve there is a need for better battery
thermal management systems (BTMS), which maintain uniformity of operating
temperature of the batteries in the vehicles. This thesis ...
Experimental investigation of hydrogen production from ammonia decomposition
(2011-08-01)
This thesis examines the production of hydrogen from ammonia in a continuous flow, packed bed membrane reactor. The experimental study examines the effects of operating temperature, pressure, and residence time on hydrogen ...
Enhancing the effectiveness of Stirling engine regenerators
(2019-04-01)
A discrete heat transfer model is developed to determine which parameters influence the effectiveness of Stirling engine regenerators and quantify how they influence it. It is revealed that the regenerator thermal mass ...
CFD determination of fluid and geometry related localized heat transfer phenomena for supercritical water flow
(2017-04-01)
The proposed concept of Supercritical Water-cooled Reactor (SCWR) as part of the Generation IV International Forum aims to improve the thermal efficiency over current power plants by utilizing cooling water at pressures ...
Mass transfer and particle dissolution in liquid-gas and solid-liquid flows: Application to hydrogen production processes.
(2013-10-01)
Many environmental problems are related to the production, transformation and use
of energy. Some of the concerns include, but are not limited to, acid rain, ozone depletion
and climate change. Therefore, “greener” ...