Modern Gasworks Practice

THE CONDENSATION OF COAL GAS 447 SPECIAL APPARATUS Special types of condensers are now found which. differ both. in construction and working from the conventional plant. For instance, the condenser may now be made to carry out the function of a primary washer, the gas being brought Fig. 276.— The Christopher Condenser. Fig. 277.—Watbr-tube Battkrv Condenser. in contact with. water as well as with water- or air-cooled surfaces. The Christopher condenser, Fig. 276, is designed so that the gas is sprayed during the operation of cooling. It consists of a series of concentric tubes so arranged that the gas, passing downwards through the annular space between the tubes, is divided into a thin film, and is thus brought into intimate contact with the exterior surface of the inner