Vapor degreasing uses a partially full container of cleaner heated to its boiling point. The parts to be cleaned are suspended in the vapor cloud above the boiling liquid. The vapor condenses on the cooler parts, dissolves the contaminants and flushes the liquid mixture back into the hot liquid. When the cleaning process is complete, the parts are removed from the tank and they quickly dry in t...

The use of carbon and tungsten filaments mounted in vacuum as early incandescent lamps is well-known, but it is less often realised that an early competitor was Nernst’s ceramic lamp. This made use of the property that , although good insulators at room temperature, many oxides become partially conductive when strongly heated. This is due to the migration of ions rather than electrons, and was ...

Partially shielded vacuum gap model of the inner acceleration region in pulsars is examined with respect to the drifting subpulse phenomenon and the polar cap heating by E×B drifting sparks. The formula for the efficiency of X-ray luminosity from heated polar cap Lx/Ė ≈ (P̂3/P ) −2 was derived, which depends only on the observational tertiary subpulse drift periodicity P̂3. In PSR B0943+10 for wh...

Density-driven flow and heat transport processes in 2-D porous media scenarios are governed by coupled, non-linear, partial differential equations that normally have to be solved numerically. In the present work, a model based on the network method simulation is designed and applied to simulate these processes, providing steady state patterns that demonstrate its computational power and reliabi...

A hybrid calorimeter is described whereby the test specimen may be heated using either hot air and/or microwave radiation. Thus it is possible to study phase transitions of materials under conditions ranging from purely conventional heating to pure microwave heating or mixtures thereof. Measurements using silver iodide showed that its phase change from the low temperature β-phase to the high te...

Abstract In many industrial contexts, buoyancy driven flows are the only cooling strategy in case of breakdown forced convection system. order to study those a simplified configuration, buoyancy-driven flow is generated inside cubic enclosure by partially heated block ( Ra = 1.4 × 10 9 ). The studied experimentally vertical median plane, part where i.e. close side block. Velocity fields, mean p...