Document k9d47br7nGjp2owBrVRn05rEJ

Waste-Heat Boiler (Continued from pago 100) CHECK THESE yj 40 YEARS OF EXPERIENCE PROVE THAT ClARK CONTROLS If your production coiti hove been going up (and whose haven't) Clark can help you "hold the price line." The Heavier, Stronger construction of CLARK Controls makes lor longer life and less frequent replacement. Our Engineering Department stands ready to help you on all fluid control problems. Write today for details. THE ClARK MANUFACTURING CO. 1931 Coif 301ft Sfravf Chwtcnd 14 CM* HiHe Mey ( Oil* frog, Mpflvf W tisluli f* yaw It. lit** *S oil l(n*. The flame quantity of additional fuel la needed to produce the additional ateam regardless of which system ii used. The auxiliary burner requires a separate fuel system, primary air sup ply end provision for introducing the burner just ahead of the boiler. The boiler limits the firing temperature and not the turbine. The boiler may be either a fired or unfired pressure vessel. The throttling system needs a eon. trolled throttling valve in the turbine exhaust. Since the additional fuel is burned in the turbine combustors no addilionabfuel or air supply is needed. Maximum gas temperature entering the boiler Is controlled by allowable ex haust temperature. The boiler Is an onfired pressure vessel. Application. This application of s waste-heat boiler will undoubtedly meet with wide acceptance In both central station and.industrial-power fields. This arrangement can 'fulfill the require ments of almost any industrial process where large quantities of process itesm are needed in addition to electric power. In addition to being'good for continu ous duty, the gas turbine should be ex cellent as a standby unit or for peak load service where it could be used with a waste-heat boiler. The steam generated could be used in existing tur bines that might be outdated (or con tinuous service, but usable (or shorttime operation. This would mean 1500 lew more of electrical power without additional steam-turbine investment costs. There are m<ny old power plants with boilers that are being derated. Some of these could be used with minor alterations as waste-heat boilers for gas turbines, thereby eliminating wastebeat boiler Investment. Mechanical Drive (Continued /ran page 106} of this Sturdy Gate Valve 140 (444o) ible and entirely sutomatic. Some, regulators are connected within the J governing system, where they regulatfl; peed directly. With other types con^ nectioa Is made to the item of the governing valve; thus the regulators set valve position. With the latter w-. rangetnent the lower apeed limits dj POWER July 7he Chapman Valve MfeXo? fNOMN ORCHARD, MAI*. * July 1949 /