Document KZLLgz4NKG36oO3Zy0Qqyr5X

('!) . .e.-i > & v- ^ : ; 'i 1 it: ; t .a.' -i i 7:.' ooooyooooc f MlfOOC'-'OCtt oooooooo POWER K o WTNKOOP, Pobffifttr f W SWAIN, filter i W ROWLXT, MaMfbi later Aixeetete Mltent I A ANNVTT IWt MUIR j e iucaii i o a iuomi Alififmrt fdltWd T DOMR 4 4 O'CONNOR C A SAKDCRS Art RdTrori C A MARSCMALCA Mitovto.. OCOROB Don NO Attest CARU MAULDIN WORLD NIWI OAAICISi UaOoa. Aerfs, tor1t, Mmo. rRv*. Mdboaro*. Roofer, Rio 4 Joaofr*. Iomoi Alret SEPTEMBER 1948 VOLUME 92, NUMBER 1 A CROSS-INDEX OR SUBJECTS FOR THE MONTH STIAM GENERATION, fjjELS, FIRING ANO COMBUSTION j^TUR^NlsTtNOINES/ OUSELS, GAS ENGINES ANO ACCESSORIES !,? AftX^ONbjflONINCAflO^ft^fRIGIR^TtON^*';' ELECTRICAL EQUIPMENT, ILIVATOflS >IP INOTffih'i'V ES ' AN P ,;5P ECIALT I Transmission, lubrication V?}i STEAMSCRViCCS, HEATINO INSTRUMENTS, CONTROLS ..pumps, -soMpiimpm ^ FEATURE ARTICLES (510to0-kv 90s turbine raises station capability 6000 kw.. 64* <!E lepairtment stores require flexible air conditioning.. 72* NEW PROJECTOR FOR boilers Check* 160 lube TetnpebaiuMs Ontty 10,6 ttMi Controls make hydro-pneumatic tanks more efficient. He* overfire jots con be made to cut smoke............... Working model simplifies theory of automatic control |.Crifflp lugs speod transformer repair............................. Internal conditions of old boilers guide water treatmen Word-Uonard system ossures dc motor speed control.Speaking of Power.............................................................. Insulation holds up 46 years........................................ 7578* 82* 87 88* 92* w 94' 95' Remarkably fwt, this new Speedomax equipment offers a definite advance in protection for large boilers. With it, the shift operator can "tour" the temperatures of 160 tubes in a little less than eleven minutes. He can stand and watch the readings as they are automatically indicated; or Speedomax will record them for later examination and for the shift log. In either case, readings are supplied in such rapid rota tion that it is generally possible to determine the exact point at which any high or low temperature, first develops, even though the condition may later spread to other points. This speed thus helps both to detect and to isolate trouble. The Installation procedure is familiar to most power engineers. The power company's staff simply makes up thermocouples and attaches them to the tubes which they decide will give the most useful temperature readings. Conventional-type couples, at points outside the gas pas- sages, are of course usually included in the ins Couples are connected to the Speedomax equip banks of 20 each, and appropriate alarms are indiwfl Records When Desired jJ The Speedomax automatically measures these I tures at a rate of one every 4 seconds. Signal ligb{S on foe each couple, and as long as temperature ronj2 rect the instrument merely indicates . . . does not tj It can be made to record at any time, however, bm throwing a switch. Or if any temperature reaches determined limit, an alarm sounds and the Sp automatically records until twitched off. Also, or banks of couples can be switched out at my t ~ concentrating on areas of special interest. For further information about these equipment*.,!! write Leeds & Northrup Co., 4910 Stenton AvernttS delphia 44, Pi. Sorns bug.dast lignite at efficiencies to 79%.......... 98' DEPARTMENTS [Electronics: 5, Photoelectric tubes.............................................. .102 1 Power engineers' notebook of plont-tested ideos..................... 105 . I'SoMng problems from tho power plant..................................... frWliat's new in plant equipment................................................ 108 . .112 jota sheet: Blowdown rate from chloride concentrations... 126 . technical briefs: digests of recent developments................... 128 |Nn of the power field................................................................. 132 . Seeder Mrvice page of new equipment ond technical literature. .178A ' $ Substantiolly Tbt Same Equipment Can Be Used For Turbine and Generator-Bearing Temperatures VJ ft MEASURING.INSTRUMENTS TCLCMETERS AUTOMATIC CONTROLS HCAT-TREATINO fU**jgj LEEDS & NORTHRUP CO, Jrt. A4N 3M-44JO) POWM (vltb vtikti Of* coaaatldatad "ScUact a ad ladwtry, "Tba logtaaor Rarla-." 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