... atmospheric scattering aerosols As a result of forward scattering of radiation by aerosol and cloud particles, circumsolar radiation can represent a significant part of common DNI measurements. This is due to the fact that state-of-the-art pyrheliometers have an opening half angle of ≈2.5 deg, which...

... in North Africa or the Middle East. Most of these problems appear linked to inadequate aerosol optical depth data used by the models, and to the dust storms from the Sahara that regularly, and strongly, modify the aerosol regime. A method that can potentially correct these problems, or allow for model...

... the heterogeneous oxidation of zinc vapor. The conversion of zinc in polydisperse aerosol reactors has been limited to 20% for reaction times on the order of a minute, resulting in a cycle efficiency of ∼ 6 % . The benefit of completely converting zinc via the heterogeneous oxidation of zinc vapor is an increase...

...Christopher Perkins; Alan Weimer Computational fluid dynamics simulations were performed to model solar ZnO dissociation in a tubular aerosol reactor at ultrahigh temperatures ( 1900 – 2300 K ) . Reactor aspect ratios ranged between 0.15 and 0.45, with the smallest ratio base case corresponding...

.... , Weimer , A. W. , Lewandowski , A. , and Bingham , C. , 2004 , “ Solar-Thermal Dissociation of Methane in a Fluid-Wall Aerosol Flow Reactor ,” Int. J. Hydrogen Energy 29 ( 7 ), pp. 725 – 736 . Comsol AB, 2003, EEMLAB : Multiphysics in MATLAB , Version 2.3.0. The MathWorks, Inc...

... will assist in the maintenance of a pressure difference between the occupied and contaminated sides. With an adequate pressure difference, advection of aerosol particles across the barrier can be prevented. No data are available to indicate how much leakage area should be allowed. Numerous utility...