Document NGemELaywedGpMr3M91O5vBQy

That's often the best advice to boiler attendant wheo he comes face to face with an empty water glass oo an overheated boiler, but-- S/iU better wdtrite // /<? tefegttard these betters Jrem the everdttrking danger of /etc water. It's a fob should not be entrusted to any but the best equipment--- MSDONNELL Boiler Water level Cenlrols There is a McDonnell Boiler Water. Pettier, Low Water Cut-off, Pump Control, or com* bination control for steam boilers of every make, sire, or pressure up to 150 lbs. Write for information covering your conditions. McDONNIU 4 MlUtt; INC 1105 WHgley BMg., adeem* It, IQ. Associated Research;" _ t rot/iflu/r.** 2)9 S. Breen Street Chicago 7, Illinois WEBSTER Engineered Combustion Installations* oro Complete. Webster can guarantee complete responsibility lor each installation, being the designer and manufacturer of nine standard types of Gas Burner Equipment. Each type is available with an Integral electronic combustion safeguard. Several are available with oil standby. Both positioning and compensating automatic combustion control sys tems are available. Wobstor will oiler you a complete bill ol material engineered to your design Conditions and Coordinated to operate as a unit Webster's Sales and Service Organisation provides competent com bustion engineering on a nationwide scale. THE WEBSTER ENGINEERING COMPANY Division of: SURFACE COMBUSTION CORPORATION --TOLEDO, OHIO rn.s. companies as. just a nw of oue mpmsintatiycs: JAnUOK. MIM.HIl CATLITT INGINtm, INC. OAtlAS . (CONOMT IGUI.VIMT COMPANY, KANSAS CITY, KAN.. ST. tOUIS. WICHITA f. J. (VANS INOINCKfttNQ COMFANY, ATLANTA. BIRMINGHAM, *, HATURAL 0A* IQUIPMINT, INC., LOS ANGILES, SAN FRANCISCO, SAN DUG SURFACI COMBUSTION CORPO RATION BUFFALO, CHICAGO, CLIVtLANO, COLUMBUS, OINVCR, ORTR0IT, MINNEAPOLIS, NIW YORK, PHIIADILPHIA, FITTS- OURGH AMO OTNCR FRlNCIFAL CITIU 298 POW.6R December IW Copper Alloy Bulletin jii SI MARINE AND POWER EDITION DEPORTING NEWS AND TECHNICAL DEVELOPMENTS OF COPPER AND COPPER-BASE ALLOYS ii m Prepared by Bridgeport Brott Company Headquartera far BRASS, BRONZg, and COPPER V.'lv *i'4i Corrosion Problems at the rA Quick Look at the Pnited Illuminating Co. Heal Pump a The beautiful office building of Unitad . besiruetivo Elfeot ol Pollution Irom Induairlal Waitii end Sawago Extremely coiroaiva - wator conditions have croatod a difficult corrosion problam for the English station of Tha Unitad Illuminating Co. at New Haven, Conn. Th English etatian is located on an (aland near the mouth of Mill River which emptiea into the New Haven Harbor. In warm weather tha decomposition ol or ganic matter generates hydrogen sulphide and other gates which rieo to the aurfoce of tha woter. River traffic aiao disturbs the Ana sediment or mud which eventually And* Its way into tha condenser*. Until 1939 Admiralty tubas in their *ur. face condenser* gave o satisCactory perform ance and averaged about 10 yoara. This condition changed suddenly soon after tha 193S hurricane, which lashed tha Connecti cut shore line, and washed large quantities of organic matter Into Mill River..This marked the beginning of o period of saver* corrosion which effected ell -equipment handling this water. Within a year several of thoir condenser* had to be retubed. . was not able to purchase additional Alu minum Bronte at this time end therefor* installed Aluminum Brats in another con denser. Failures within two weeks were traced to those tubes which were located la the path of the incoming steam which enter* the condenser at high velocity. Ex cessive vibration had occurred which led to the foituro. Abrasion marks present on the surfbeo Indicated that Che vibration hod been severe enough to cause the tubes _ to strike each other. The severest pitting' occurred midwey between the tube sheets and tube support*. Eacetslvo vibration was reduced In one condenser by instolling two additional tube support*, making four Instead of two. in other condensers wood strip* and flat tened condenser tubes ware wedged be tween the tubes located in the path of the incoming atoem in order to dampen tho - vibration. Impxovtag Water Conditions Illuminating Company at Now Haven i* modem to tho nth degra*. It is;comfort* ably heated In the winter and pleasantly air cooled in the summer by giant beat pump located In the basement. & ad Will the beat pump be used for beating and eir conditioning our home* and office building* of the future? Briefly, the. heat pump U a refrigeration unit operated to make use of heat Instead of cold. Heat Is removed from well wator, the earth or even outside air, stepped up in tempera ture than used to heat the building or home. Tha significant fact l* that the neat pump produces three units of beat, some Itime* more, for each unit of electricity (kilowatt-hour) it use*. The heat pump at United Illuminating uses wall water with a year round temper ftature of about 58* P, Extraction of beat from tha water during winter lowers its Sf;temperature to about 40* P. Heat put Into tho water during the summer (when cool iing the building) raises Its temperature to about 70* P. Cold water circulated through 'VJthe building during summer varies from In the moontime a seriouseffort was mad* to correct the bed water condition*. The. river was dredged, Paper mill* above and` opposite the plant took step* to reduce the wastodlschargedintotherivar.Weter condi tions were greatly improved by iheae meas ures; Treatment of tha condensing water by hypochlorite was found to greatly reduce S8* P. to 40* P., white circulating hot water during winter starts out at tempera ptures up to 125* F. Sine* this la not as high fellat most hot water heating systems, larger radiators era required, .with fans to blow mair over them. MThe amount of eloctridty mod for heat ing and cooling tha entire building during the amount of slim* in the water passe*. . Aluminum brass alloy tubes have bean 1947 was that used lata than tlxty-flvo percent of for lighting the building during 3*4* in use since 1944 and thair performance tha same period- Coefficient of Perform indicate* that the improvement in water conditions and roduction of vibration havo ance, taking into account all power tat accetsorias,lncluding ventilating {intend materially increased tha Ufa of thoir con pumps averaged about 2.9. denser tubes. J5.000 square foe* Worthm|ii Surface Con denser at English Station. Courteayi The United Illuminating Co-. New Haven. Conn. - -Tubofoilure* have dropped considerably from tha peak encoun tered in 1942. Inhibited Admiralty tubes were Installed The present day out since no time was available for experi look la to u*e the best mentation with different alloys. .Within available alloy* regard- six months a large number of tube failures let* of Am cost, since devolopod. Severe corrosion pitting pene ' the best Is tho cheapest trated the tube wall. A condenser was re In the eod when b&sod tubed with plain Admiralty which also upon long service life toon foiled in the seme manner. and the minimum of In the meantime, tost lot* of various interruptions. alloya auch as plain Admiralty, inhibited Contact tha nearest Admiralty, Aluminum Brats, Aluminum Bridgeport ofllc* re Bronte and 70-30 Cupro Nickol ware in garding your condens stalled and examined at froquenl intervals. er tube requirements. At this time Aluminum Bronte looked Writ* for Bridgeport's vary promising. A condenser was then 120-page Condenser equippod with Aluminum Bronte tubes. Tube Manual which Within three year* some of these tubes contains a wealth of failed from corrosion fetigtto cracking end technical Information from excessive pitting. Because of restrietions in copper products, the company on available alloya and their application*. Hoot pump st The United lUendaatlng Company. BRIDGEPORT BRASS BRIOOlFOIT BIAS! COMPANY, . 6RIOOCFORT 1, CONN. ffYAAlllfftO ! Milk Bridgeport. Coanscfktit, end fndloeopefli, fmflone la Ceeecfei Nerond* Copper end Brets llmHad. Moofrool POWER December 1948