Atomic Energy of Canada Limited

About: Atomic Energy of Canada Limited is a company organization based out in Ottawa, Ontario, Canada. It is known for research contribution in the topics: Neutron & Zirconium alloy. The organization has 4845 authors who have published 4826 publications receiving 102951 citations.

Nuclear production of hydrogen: When worlds collide

Abstract: A particularly important role for nuclear power in the future will be in alleviating the potential for climate change by avoiding greenhouse and particulate emissions. The corollary is the key link to the hydrogen economy, where the introduction of hydrogen into the transportation sector will benefit the environment only when low carbon sources, such as nuclear reactors, are the primary energy source for hydrogen production. The future could well be the Hydrogen Age. We show that a major reduction in greenhouse emissions worldwide can be obtained by synergistic nuclear-electric-renewable production of hydrogen, thus alleviating potential effects on future generations. Copyright © 2008 John Wiley & Sons, Ltd.

The coalescence of H2S and CO2 bubbles in water

Abstract: Coalescence times are reported for bubbles of H2S and CO2 formed on adjacent nozzles in water. With CO2, times were small (1–3 ms) at pressures below 2 MPa, and rose to 20 ms at 3.4 MPa. With H2S, the logarithm of the coalescence time was proportional to pressure, and coalescence times reached 100 ms at 1.7 MPa. Film stretching rates were calculated assuming that the film surfaces were slightly immobile. By using a form of Vrij's theory for the inherent breaking time of films of constant thickness, the effective number of immobile layers could be calculated. Since these were in the range 10−2 to 10−3, only a small amount of “stiffness” in the film surface is enough to cause large changes in coalescence time. On rapporte les temps de coalescence dans le cas de bulles de H2S et de CO2 formees dans l'eau sur des ajutages adjacents. Pour CO2, les temps de coalescence se sont averes faibles (1 a 3 minisecondes) a des pressions absolues inferieures a 2MP; ils se sont accrus a 20 minisecondes a une pression absolue de 3.4. Dans le cas de H2S, le logarithme du temps de coalescence a ete proportionnel a la pression et les temps de coalescence ont atteint 100 minisecondes a une pression absolue de 1.7MP. On a calcule les taux d'etirage des pellicules en supposant que les surfaces de celles-ci etaient legerement immobiles. En employant une forme de la theorie de Vrij Telativement au temps inherent de rupture des pellicules d'epaisseur constante, on a pu calculer le nombre effectif des couches immobiles; vu que celles-ci variaient entre 10−2 et 10−3, měme une faible quantite de rigidite dans la surface de la pellicule s'est averee suffisante pour produire des changements considerables dans le temps de coalescence.