Applications compression mount

Figure 16.33 shows a schematic of a simple gas turbine. The machine is essentially a rotary compressor mounted on the same shaft as a turbine. Air enters the compressor where it is compressed before entering a combustion chamber. Here the combustion of fuel increases its temperature. The mixture of air and combustion gases is expanded in the turbine. The input of energy to the combustion chamber allows enough power to be developed in the turbine to both drive the compressor and provide useful power. The performance of the machine is specified in terms of the power output, airflow rate through the machine, efficiency of conversion of heat to power and the temperature of the exhaust. Gas turbines are normally used only for relatively large-scale applications, and will be dealt with in more detail in Chapter 23. 

For more specific, always recurring applications the die is mounted in the fixed press table and upper and lower punches are attached to moving rams. Fig. 8.94 demonstrates schematically the sequence of events in an eccenter driven ejection press. In such machines, the lower punch descends in the die to allow its filling with powder from a fill shoe (A). Often, all the compression is accomplished by the upper punch which is moving toward the stationary lower one (B-i-C). Later the lower punch ejects... 

The used flame treaters for treatment of polyolefin surfaces in packaging applications depend on whether the sample to be treated has a three- or two-dimensional geometry. Three prime components can be recognized in both cases. The three-dimensional treatment plant is typically consisted of following parts (Fig. 8.7a). A conveyor belt is used for a continually treatment of material, such as polyolefin objects mounted on special heat resistant holders. A cleaning equipment, such as brush-like system or a compressed air stream, commonly placed a few centimeters in front of the burners allows removing of all small particles, such... 

---