Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise on the care and management of steam engines, boilers and electric machinery (1922)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 904
nts leakage and consequent introduction of air intothe pnmp^ or wasting of the refrigerating gas at eachalternate stroke of the piston without necessitating thepacking of piston so tightly as to cause excessive friction.Fig. 363 shows a sectional view of a double-acting De LaYergne compressor… … Fig. 363double-acting type of de la yergne ammonia compressob fore^ as in the latter case re-expansion will take place,resulting in loss of efficiency of the pump. To effect this,two valves are provided in the lower end of the compressorcylinder, one above the other. Either, or both of these valves…
