A TRNSYS component (Type 262) has been written to simulate a concentrating PV/Thermal collector. The component is based on a dynamic model of a concentrating PV/Thermal collector, which includes thermal capacitance effects, and detailed equations describing the temperature dependent energy flow between the collector and surroundings. The CHAPS system, a 30x concentration parabolic trough PV/The...

Parabolic solar collectors with central receiving systems are preferred due to their high efficiency despite initial investment and operating costs. In this study, the effect of two glass covers on tubular collector will be investigated, aiming enhancement cylindrical parabolic collectors’ efficiency. By using cover it is aimed decrease losses increase order investigate changes instantaneous ef...

A eukaryote-type actin and its binding protein profilin encoded on a genomic island in the cyanobacterium Microcystis aeruginosa PCC 7806 co-localize to form a hollow, spherical enclosure occupying a considerable intracellular space as shown by in vivo fluorescence microscopy. Biochemical and biophysical characterization reveals key differences between these proteins and their eukaryotic homolo...

The geometry of a collector is one of the important factors that can increase the incident radiation on the collector surface. In the present study, the incident radiation for a stationary collector with cone geometry, i.e. a conical collector, is theoretically and experimentally investigated. This type of collector is always stable and does not need a fixture to install. Moreover, it has a...

Abstract We present a selective laterally wet etched collector InP/InGaAs/InGaAsP double heterojunction bipolar transistor (DHBT) with a quaternary step graded base collector structure. This device shows a DC current gain of = 70 over a large collector current range, a breakdown voltage of BVCE0 = 10.5 V, and a maximal collector emitter voltage of more than 5.5 V at 105 A/cm2 collector current ...

Abstract Additive manufacturing is now a promising option to obtain porous customized structures at relatively low scales. The capability design with tunable heat transfer performance compared conventional materials, such as open-cell foams, very interesting the user. In this study, we investigated conduction in drilled-hollow-sphere architected foam, inspired by Triply-Periodic Minimal Surface...

The distribution of p+ Gamow-Teller strength in 26Mg, 54Fe and 56Ni is calculated in the QRPA and large-basis shell-model spaces. The quenching relative to the simplest jj coupled model found in the QRPA is similar to that found in a shell-model basis which includes 2p2h ground-state correlations within the major shell (sd or pf). For 26Mg there is significant additional quenching found in the ...

Metallic foams and cellular solids represent a relatively new class of materials with perspective applications in lightweight structures, in acoustic and thermal management, in energy-absorbing parts, etc. Efficient use of these advanced materials requires detailed information on their mechanical behaviour, even when their primary use is not linked to mechanical loading (e.g., thermal insulatio...