Power consumption method

The Use of Power Consumption Method in Dosage Form Design... 

The principle of power consumption method was described in detail in theo publications (8,25-30). As a high-shear mixer, a Diosna V 10 was used, keeping constant impeller (270 rpm) and chopper speed (3000 rpm) during the experiments. 

Robust formulations are today an absolute prerequisite. Concerning the production of granules, the granule size distribution should not vary from batch to batch. The key factors are the correct amount and the type of granulating liquid. The interpretation of the power consumption method can be very important for an optimal selection of the type of granulating liquid. The possible variation of the initial particle size distribution of the active substance and/or excipients can be compen-... 

Dust Filter. The cloth or bag dust filter is the oldest and often the most reHable of the many methods for removing dusts from an air stream. Among their advantages are high (often 99+%) collection efficiency, moderate pressure drop and power consumption, recovery of the dust in a dry and often reusable form, and no water to saturate the exhaust gases as when a wet scmbber is used. There are also numerous disadvantages maintenance for bag replacement can be expensive as well as a sometimes unpleasant task these filters are suitable only for low to moderate temperature use they cannot be used where Hquid condensation may occur they may be hazardous with combustible and explosive dusts and they are bulky, requiring considerable installation space. 

The cathode material is stainless steel. The lead produced by this method analyzes 99.99 + %. The overall power consumption is less than 1 kWh/kg of lead, so that the electrolytic process for treating spent batteries has much less of an environmental impact than the conventional pyrometaUurgical process. 

Compressor Selection To select the most satisfactoiy compression equipment, engineers must consider a wide variety of types, each of which offers peculiar advantages for particular applications. Among the major factors to be considered are flow rate, head or pressure, temperature hmitations, method of seahng, method of lubrication, power consumption, serviceability, and cost. 

Chandler [Bull. Br Coal Util. Re.s. A.s.soc., 29(10), 333 (11), 371 (1965)] finds no good correlation of grindabihty measured on 11 coals with roh crushing and attrition, and so these methods should be used with caution. The Bond grindability method is described in the subsection Capacity and Power Consumption. ... 

Electrical power supply units vary considerably among manufacturers. Power consumption and ozone-generation capacity are proportional to both voltage and frequency. There are two methods to control the output of an ozone generator vary voltage or vary frequency. Three common electrical power supply configurations are used in commercial equipment ... 

Power consumption with different flow control methods in a fan system. 

The provision of a small refrigerator is attractive, but the device must be of long life (several years), very reliable and low in power consumption, weight and vibration. The alternative is to provide a store of cryogenic liquid, but the experiment then has a comparatively short lifetime. Both methods are, in fact, used. 

In the present case, which is concerned with power consumption per unit mass, the mass mean diameter is probably of the greatest relevance. For the purposes of calculation a mean value of 4.0 mm will be used, which agrees with the value obtained by Bond s method. 

Established method for inactivating biological agents, High power consumption ... 

The first scale-up method was developed by Carley and McKelvey [1] in 1953. In this original work, the rate and power consumption at a fixed speed and for a geometrically similar extruder was simply a ratio of the extruder diameters as follows ... 

For high-pressure installations, it is possible to balance partially or fully the hydrostatic force on the rotating member of an internal seal by using a stepped shaft or shaft sleeve (Fig. 10-110). This method of relieving face pressure is an effective way of decreasing power consumption and extending seal life. 

In the above example, the process characteristics (here, power characteristics) presenting a comprehensive description of the process were evaluated. This often expensive and time-consuming method is certainly not necessary if one has to only scale-up a given process condition from the model to the industrial plant (or vice versa). With the last example and the assumption that the Ne (0 characteristics like those in Figure 3 are not explicitely known, the task is to predict the power consumption of a Rushton turbine of rotating with = 200/min. The air throughput be = 500m /hr and the material system is water/air. 

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