Compressed air . /?*.-* IBSABi. FIG. 2. INDIC.\TOR CARD FROM TWO-STAGE COMPRESSOR 6-A. 3949 COMPRESSED AIR. Other things being equal, the economyof an air compressor depends on the pro-portion of the heat of compression whichis removed as d-A-eloped. Compressorefficiency, therefore, may be said to de-pend upon the effectiveness of the cooHngdevices adopted, provided what is gainedhere is not elsewhere wasted in wholeor part. After long experience, bitteralike to makers and users, modern prac-tice in compressor design recognizes onlytwo practical methods of removing theheat of compression; jack
Compressed air . /?*.-* IBSABi. FIG. 2. INDIC.\TOR CARD FROM TWO-STAGE COMPRESSOR 6-A. 3949 COMPRESSED AIR. Other things being equal, the economyof an air compressor depends on the pro-portion of the heat of compression whichis removed as d-A-eloped. Compressorefficiency, therefore, may be said to de-pend upon the effectiveness of the cooHngdevices adopted, provided what is gainedhere is not elsewhere wasted in wholeor part. After long experience, bitteralike to makers and users, modern prac-tice in compressor design recognizes onlytwo practical methods of removing theheat of compression; jacket cooling andintercooling. These will be considered inorder. Jacket Cooling.—.\ brief considerationof the conditions will show that jacketedbarrel cooling alone can be only a partialand very unsatisfactory solution of theproblem of removing the heat developedby compression. With the piston at thebeginning of its stroke, the maximum coldcylinder surface is exposed and the cylin-der is filled with air at its lowest pressureand
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectcompres, bookyear1896
