1,721,053 research outputs found
“Studio preliminare per la progettazione di un sommergibile militare di concezione innovativa”, rapporto tecnico indirizzato al Comitato Progetti dello Stato maggiore della Marina Militare italiana
No full textAir natural convection on an inclined discretely heated plate with a parallel shroud above
No full text“Report on speciaL energy conversion systems prepared for A.M. Associates Pte Ltd. (SGS-Thomson)”
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Radiation effect on natural convection in symmetrically heated vertical channels with discrete sources
No full textRadiative Effects on Mixed Convection in a Uniformly Heated Vertical Convergent Channel with an Unheated Moving Plate
No full textFluids engineering is extremely important in a wide variety of materials processing systems, such as soldering, welding, extrusion of plastics and other polymeric materials, Chemical Vapor Deposition (CVD), composite materials manufacturing. In particular, mixed convection due to moving surfaces is very important in these applications. Mixed convection in a channel, as a result of buoyancy and motion of one of its walls has received little research attention and few guidelines are available for choosing the best performing channel configuration, particularly when radiative effects are significant. In this study a numerical investigation of the effect of radiation on mixed convection in air due to the interaction between a buoyancy flow and an unheated moving plate induced flow in a uniformly heated convergent vertical channel is carried out. The moving plate has a constant velocity and moves in the buoyancy force direction. The principal walls of the channel are heated at uniform heat flux. The numerical analysis is accomplished by means of the commercial code Fluent. The effects of the wall emissivity, the minimum channel spacing, the converging angle and the moving plate velocity are investigated and results in terms of air velocity and temperature fields inside the channel and wall temperature profiles, both of the moving and the heated plates, are given. Nusselt numbers, both accounting and not for the radiative contribution to heat removal, are also presented
Experimental Analysis of Air Natural Convection on Inclined Discretely Heated Plates with Parallel Shroud below
No full textDevelopment of a Biogas Stirling System for Rural Electrification in Uganda
No full textOutline of the 50 kW Stirling engine (4-189D.A.).
The engine features a newly developed swash plate mechanism with floating plates.
The engine, which uses Helium, has been successfully tested for over 1,000 hours, demonstrating a maximum horsepower of 52KW (71PS) /2,500rpm, maximum efficiency of 31% / 700rpm, and maximum torque of 30kgf-m /500rpm. The performance of the engine is presented with these experimental results:1) Engine power, Torque, and Efficiency vs. Revolution, 2) Heat balance, 3) P-V diagram of expansion space and compression space, 4) Noise level
Experimental investigation of the buffer space influence on the performance of a gamma type Stirling engine
No full textAir natural convection between inclined parallel plates with uniform heat flux at the walls
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