Cooling surface treatment

Easy possibilities for post crystallization treatments of the crystal layer on the cooled surface. Treatments such as sweating and washing should lead to a further purification of the product (see Sections 7.8. and 7.9.). The amount of impure liquid entrapped in the layer or sticking on the surface of the crystal coat should be reduced by these treatments. 

Such types of loads may require special design of capacitor elements and their dielectric impregnation, cooling arrangement, size of shell or surface treatment. For all these applications therefore it is important to know the actual operating conditions, behaviour and characteristic of the load and its duty cycle before selecting the capacitors. 

In conclusion, the tests performed at PMA facility showed that the engine is able to bum this kind of fuel, however some problems have been encountered. Some of them have been successfully solved by insulation and cooling. The remaining problems, especially the erosion phenomena on the tip of the injector, are expected to be solved by means of surface treatments of the injector itself. 

At low pressures, the products of proton transfer (NH, + HC504) escape unchanged from the site of reaction and recombine on a cool surface elsewhere as sublimate. A kinetic study of the rate of NH4CC04 sublimation has been reported by Jacobs and Russell-Jones [26], They developed a kinetic equation from consideration of the diffusion processes on the surface and in the gas phase. The theoretical foundations of the assumptions in this treatment have subsequently been reexamined by Guirao and Williams [27]. 

For the hydrogenation of ethylene, the activities of nickel and platinum were observed after various surface treatments of argon-ion bombardment, radiation cooling, and annealing (38). Activities for the ion bombarded surfaces were as great as 10 times those for annealed surfaces while those for the radiation-cooled surfaces were 2-3 times the annealed values, thus indicating the role of lattice defects in this type of reaction. 

The effects of several surface treatments for the glass were examined. In each case the cell was constructed of new glass. The chemical treatments consisted of soaking the cell for 1 hour in the solutions listed below, then rinsing extensively with tap water, followed by distilled water. The cell was then oven-dried at 110°C., cooled to room temperature, and allowed to stand at least 24 hours before use, with no attempt to exclude air or water vapor. 

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