The performance of the solar collector can be reviewed based on several parameters, namely thermal and large fluid drop (pressure drop). This study aims to compare pressure plate-type collectors a spiral-shaped pipe arrangement using distance between pipes. comparison analyzed in each for pipes is 25 mm 50 mm. approach or stage research data plate type through CFD simulation testing. stages tha...

In the present work, a prototype of a new type of solar collectors, which called Direct Absorption Solar Collector, was built and its thermal performance is experimentally compared with conventional flat plate solar collector under transient and steady state conditions. Different volume fractions of multi wall carbon nanotubes in water and ethylene glycol mixture (70%:30% in volume) were used a...

PURPOSE To determine whether preferential pathways exist within the human trabecular meshwork, pigmented and nonpigmented regions adjacent to and between collector channels were examined, and the configuration of the juxtacanalicular tissue (JCT) was analyzed. METHODS Healthy whole human eyes were perfused at 10 or 25 mm Hg with 0.5 mum fluorescent beads. Tissue wedges of pigmented and nonpig...

Omri Boehm offers a lucid and incisive defence, supported by careful scholarship, of the compelling idea that preoccupation with Spinoza—appreciation of the force of Spinoza’s reasoning along with a concern to avoid his drastic conclusions—is at the heart of Kant’s philosophical enterprise. I have learned a great deal from Boehm’s fascinating study, and its excellence will be clearly visible to...

The importance of using solar energy, one the renewable energy sources, has started to be understood more recently. negative environmental effects and limited amounts fossil fuels have led increased demand for sources worldwide production various models devices accelerated take advantage which is basis all sources. Using collectors as a way benefit from been used many years. Although are genera...

A reference counting garbage collector cannot reclaim unreachable cyclic structures of objects. Therefore, reference counting collectors either use a backup tracing collector seldom, or employ a cycle collectors to reclaim cyclic structures. Recently, the first on-the-fly cycle collector, that may run concurrently with program threads, was presented by Bacon and Rajan [3]. This demonstrated the...

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...

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 ...