Abstract: The Directly-Irradiated Annular Pressurized Receiver (DIAPR) volumetric solar absorber was adapted to operate as a methane reformer by coating the absorber pins with catalyst. A computational model ...

Abstract: A naphthalene sublimation technique is used to study the effect of surface injection on the mass (heat) transfer from a circular cylinder in crossflow. Using a heat/mass transfer analogy the ...

Abstract: The reradiation losses, inherent to every thermal receiver, can be significantly reduced by exposing the working fluid to monotonously increasing irradiance and preventing energy exchange between ...

Abstract: The absorbing matrix of a volumetric (directly irradiated) solar receiver must be exposed to the concentrated incoming sunlight. Most applications require that the receiver operates at an elevated ...

Abstract: A new volumetric (directly irradiated) solar absorber, nicknamed Porcupine , is presented. It was tested over several hundreds of hours at the Weizmann Institute’s Solar Furnace, using several ...

Abstract: A solar central receiver absorbs concentrated sunlight and transfers its energy to a working medium (gas, liquid or solid particles), either in a thermal or a thermochemical process. Various ...

Abstract: The Directly Irradiated Annular Pressurized Receiver (DIAPR) is a volumetric (directly-irradiated) windowed cavity receiver, designed for operation at a pressure of 10–30 bar, exit gas temperature ...

Abstract: The basic mathematics and structure of heliostat have remained unchanged for many decades. Following the challenge first made by Ries et al., the non-imaging focusing heliostat recently proposed ...