Document GmRmYb6ER71aBgj3gKgbRYo1N

FILE NAME: ZK/L DATE: D DOC#: BO/L DOCUMENT DESCRIPTION: d:Z MARCH, 1940 Small steam-pressure incr~ase cuts coal $15,000 a year 56 Refrigerating engine-room hazards and their elimination 60 I I: Practical pointers to look for in buying a diesel engine 61 Letters from a turbine specialist-No. 7, on air coolers 63 I I I: So you're planning to install a centrifugal pump unit. 64 ! Direct method for computing friction loss in pipelines 67 How to select and maintain flat, multiple- rubber belts 70 . Avoid furnace explosions-an operating responsibility 73 Service records check performance of shielded blades 76 Common sense in smoke prevention at Rochester, N. Y. 78 Improved gas-engine waste-heat-utilization method 79 Results of 12 years experience with hydrogen cooling. 81 i- F \ !_;,,. if tfI ~~i, ti};:. ....; Report of annual meetings, ASHVE and ASRE 82 Station K, Omaha, wins battle against condenser scale. 84 THE OPERATING ENGINEER Diesel-powered flour mill learns from costly experience. 91 Don't use compressed air to empty barrels or drums. 93 Pointers from a boiler inspector's notebook on "dry firing" 94 : A Feedwater Problem 95 Practical Aids ... 96 i1r:t Readers' Problems 100 Headwork Section 103 tr/_; Argument Corner OTHER10D4EPARTTeMstENfToSr Hardness. 105 '9.,J.':J5i.,:\l:. ,, ,'1i.. ~'. '-/ < Speaking of Power 86 Engineers' Bookshelf 148 ii~ ~ [:~ rij :~ '..1 ~ - .,.l Power Lines 108 Data Sheet No. 92. 118 !,. ,*-'" ! lllii ! ...,i ,: ..,: ....; ' -; New Plant Equipment 120 George Edwards. 126 -:-~. .-,i - What's New In Plant Equipment tratin~ a-- a trud,. f1111r i" tlri\, it t!1rti11~_d1 -.la11ilar,! pn~ ...11r CJ indtr--- !Jt'i11g --111: 111) po,,ir i-- 111n--111111d 111 ',i, 1 1 ,tl S1 hrfTmrn. lnr. ,-.)ii Fu~/ I.- II ,.,t C/w,tN. l'n. Diesel Engine no. :;~:;_ TYI'E JS i.1ydt ,ngine i-. lll-t(li- i11 ,). /)-. dnd 8-nl llllit, rated at 61){) a11,I h~.S hp re 0 p1rti,,h at ltJ0 rp111. Jl,,..,. i- 1::l in, stroke 16 in. Lrank-liaft i- l-p11",1. tJ-in. dianwtrr :--tttI f11ring. \lain In ar- ing;; arc babbitt-lined -t,,l -llt'II- ,,i:ii -him adjustment Eight pi,111n ring- ar, ll<t>d. ti,e cornpn,,ion and thr,-,. f,,r ,.ii ,ontn,l. with onf' nf the !attn below ti,~ pi,t<,n pin. lndi"idual cylindn head, an li1Jlted to cylindn-block top. ~lain , ah,., -eat dinl'lly ;,, r\'lindt"r lua,k O11t,ide ,,attr jumptr:-:- tran.-..ffr (',1olini!,! wat,,r from cylinders tu IH"ad,, (:,.r,Jin)!-\\at,r headPr is cast inkgral ,,ith nlindn 1,1,,d,. underneath air-intab h,ad,-r and "" ,.,. hau::-t side of e1igine. Cotdin: \,att-r pd---t-from nlinder hf'ad, l,v indi1id,1al ,!!,.,,. ,onneclion:-- to exha11:t-mani fulrl jad,..,:. Fllel-injectirrn svstem i- pal,ntrd Cor,p, r- Bes,em.er atmosriheric-relid tip,. Frwl i11jector, are mounted on can,-haft hr,n,in~ r:owr and are gear dri\fn frnm ea111,haf1. r:001,er-Bessemcr Corf'. .\It l',,rn,,n. ()hio. Insulation FrnEFOIL is insulating mat,rial with d,ar- actf'ristics of structural material. l'rimaril) u,e used for bulkhPad, on ,hip,. it i- n"". -aid to be in ext,n,iw:h as hr,ilf'r rasinf!s, O\'f>Il ,rail:--, lining... fur --tatk.:.. f'tc. It i., mad, of allfrnatP- la,n., nf ilat and corrugated a,llf'sto, ft.It j,,intd ,, itl, new waterproof arJh,.sin. 'aid tr, lw wrmin-proof and to have ,ulliri,:nt ,tren)'.tli after soaking in watPr for -;2 hour::: t(, withstand pressun of approximately ,.1 lb applied to ont inch ,quart' di,. "n surface. Philip Carey Co, Lockland, Cincinnati, Ohio l ~\I ( l Lic1uid-LeYel Controller t rJ.n ... rnit ... :!ir, 111 ,,h llld!!.Jlttic fr,rft -l1aft /""' ,1r .. t.td11n: hnx. tl,ll in,..tt~ad ~if r1-,t.u, Pr,1vid1... )-p11int ,1,11trcd: [H1t11p rt'!!lllatii1n. liW\,atcr 1ut1iiL low\\at1r alarm. hi~h-,,ater Jlann, and hig;h-,,ater rntolf. Is madt' in two model,, for workin}! pre,,ure, up t,, .'i;,O 11,, :'ipecial time-d,.lay rt'\ay a,ailahlr to ;_!:ivc proper control operation C-\f'H urhltr --urging \\ater le\t:>l condition~. Fred Ff S,haul, fngrg D,, .l:!.i Il"c,t II'""'' .'t. (;hicalo. Ill. Self-Propelled Air Compressor !<1.1\\l\._.\l!\r, pc1\\1r !dkt-,tff ... f\tr ..1 ll1!ll11r1-.-.ur--. and tr..iil,r--. p11\\r unit will r,plan --landard F11rd t11;.:i1w in truck. ( :11n1bi11atiun ,1q!i1w and l'umpn... :--f1f ian lw optralt'd Ii~ trt1d, drht r fnnn ,ab. "uppli,, :;:; dm at 100-lb rirr"m,. and ,, a ,tanrlarrl fiill-.-iZ<d :-<"hra111111 air ,i,mprt--"r adapttd for in,tallatin ,n trn,k. Ba,il'ally. rrnit 1,; ~-c,l engin,, and 1-cyl air compressor in an R-c,linder block. Power cylinders are 'ios. I and -l rn one bank and :'loos. 2 and 3 in other t,1 gi\'t' equal power and load. Wh,-n op- Owrspeed Valve D1-.,1. c,,mhin,d slop and ,,n,.,-~,nq ,ahe pro, !dP-~ rnanual L'11ntrol. ,m,r~,un cln.-:..ure and automatic nnpening f,Jr --lt'Jtn air. ga, ,1r liquid,;. Wheel ,.,. 111,uiui side of ,alve i, of cnn1t'ntillnal d,,,~~. t'fllf'l'f!Pncy Yaln' hf"ing nn tht 1itli,r 1't:il of tlw slt'm. \"ormally. ,m<>rg,n,\' qj-, i, held in full open position I," ,pnnc -ho,, n in cylinder. Enwrgency , .ti,,, di,l "ith its extension and clearanc, pH,,,, f'omprise the one moving part. 1 :l,a,:111 ,, piston, which has no contact wit]; n lin.J,r i- surrounded by steam at air. ~- liquid lin1: pressure. ~kJ.1n p~1----.1;, l i,-,--... -h,rn n frnm B through Ii :,, To clo,e emergency Yah,. I'' in line from under,ide ,,i , 1 ,imilar rnl\'e at any on, ,,f ,l,- 1 {'ontrol point"', i-; n1nm11J1;11!, thus rtl(-:-a~inl;!: pre~:--ure 1i 1 1t 1 \\ cilinrl,r in hack of cl,aran, 1' 1 full pn::-~-tlfl' rPmainin: 11!1 fr 11 :1t th,rt, i, a n,t r:lr1,ing !nail ,,1 _,.,, 1 ' drPd po .Jnd--. <'au~in- 1n~L1:1I 1dwn pilot ,alve is oppn,d. \I., gency vahp do~ws in dir, ,11,, 11 and hec,,mes unbalanced " 111 " To reopen this valve, hanr I ,., 111.t:t-1 1,dve is first closed. In th:, 1""11 '"'' What's New In Plant Equipment 1rati11. ,i ... a t1u1k. 11 1111 ]"'''' 1 dri1< it 1l11.,11;:li -1,u,,l.11 ,I prt:----or i-~lindir..; !win!.! ... )111I .. 1) fl() J)U\\t'I' j ... ("H'[-.\llllt'd ti! .lll Schranun. In ~)8 Fu,r I,,,.:... 11 ,st (.i,,.,ter, i'u. Diesel Engine TYJ'E .I~ 1-tycle ('ngine i~ rnad 1 1t1 (>-. -; and 8-c,l units rated at 1.30. ,~,. rioo and h-;'5 hp re,1wctively at -!00 rpm. BfJr, i, 13 in, stroke 16 in. Lranbhair i.- 1-pice. 9-in. diameter ,tee! forging. \lain hearings are babbitt-lined ,te,l -h,lls "ith -him adjustment Eight pi,t .. n rings arP u,t'd, five compression and tlmT for ,,ii rnntrul. with one of the latter bdow the pi.,ton pin. Individual cylind,r iwad- ar, l,nlted to CY}indn-block top. .'\lain , ah,., c,at directlY rn cylinder h,a.J-. Ont-i,k \\ater jump{r~ tran,ft>r ( 1< 1li11!..!: \\al!'r from cdinder,; to hiad-. t ....\ing-"at,r hcader ;, ca-t inte~ral 11ith , , :;n,l,r bJ.,,.J... nnderneath air-intake h.,-ad,r .!l!.J <on ,.,. haust side .,f f'ngine. Coolin~ ".it,r pa--,- irom cvlinder heads by in,li, i,i11al ,ll,ro1, connections to exhau,t-manii,.,\.J jack.t. Fuel-injection system is pat,ntrd Coop,r Bessemer atmospheric-relief t, rw. Fuel in- jectors arc mr,untt>d on cam-haft housin~ coYer anti are gear drinn from cam,haft. Cooper-Bessemer. Corp. \It 1',rnon. Ohio. Insulation FmEFOIL is insulating matnial with ,haractPri,tics of structural makr:al. l'rimarih used for bulkhea,ls on -hip-. it i, n ..,, -aid to be in u,e extensiYrlv a, boiler casin~~, OYf'Il wall-.:., linin~- f<Jr ;.:ta<"k.;. ,tc. It i, ma1k of alternat, ldyrrs r,f !lat and corrugated ac;lw,to, kli ioinnl "i1li niw "aterproof arlhesin. ;,;aid to \,. 1ermin-pr0of and to have -utr,,;ic:nt ,tnngth after soaking in watn for ~~ hours to withstand pressure of apprr,ximately 75 lb applied to one inch ,quarr dii, nn surface. f '/., I Liquid-Level Controller \1 ,,. , f.l lWL tran-rnit, tloat Jll<l\<'lllt'lli thrungh magnt'tic force instead of rotary ,haft or .,tulling hnx. Prmide, 5-point control; pump rP~ulatinn. low-~,-att~r cutoff low-\\ ater alarm. high-wat('f alarm, and high-water cutoff. ls made in two models, for working prc"ures up to 5.~0 lb. Special time-delay rday a,ailabl" to give proper control operation nen under -urging ,, ater level condition.-. Fred fl Srhauli fn,erg Cu. :u.; 11 c.1t //uron St, Chirago. 111. Self-Propelled Air Compressor E1.Dw,Y11,c l'"'"'l' tak-,,ff,. ,,trn pn,--r-. and trailer-, p.. 11,r nnit c,..~1'1i1ll- nplace -tandard Frd ,-ngi1w in t rnek. c,,mbination engine an<l co111prt~...or ('all lw p<'ratt'd l,y trnck dri"r from al,. ~11ppli .., :i5 cfm at 100-lb prhsure. and " a standard full-sized ~chramn1 a,r ,nmpressor adapt,-d for in,tallatin in trnck. Ba,ically, unit ts -1-n l engint and 1-cyl l,lck. atr compressor l'nw<r cylinders \,,1!1k :uitl \11 ... I' ' in an 8-cylinder are \'0s. l anrl I :..'. :i111l >\ iri 1.ih11 Overspeed Valve Dl -.-\L cornbintll --top and tt111r!.!.111n \ah e pn ,, id,,s manual c1,ntrol. 1JlHT;!t'Jll, clu:--ure and a11tt1matic rt'upt'niug t"or --t,;un, air~ -a-- or liquid~. \\'hetl nr 111,t1lll;d :--idt> of ,alv~ i~ uf con,entinnal ,1,---i~n. t'lllPrge1Hy vah,::> hting on the otliit in,! of the stem. 'iormallv, L'merg,n,, ,.,h, i., held in full opPn po-ition h, -pri11e ,l,,rn II in cylin.ler. Emergency rnh ,. di-k "ith it- exten-ion and clearan,, 1i-1"" 1nmpri~e the one moving part. C\1ar:t1H, pi,ton. 1d1id1 l1as no contact wilh nli11d,: i, ,urrnund~<l by ,t,am at air. ""' liquid linP pr,:ssnre. 5kam pa,-a", A -1 :J -h,n, n frorn ii thro11~h /J 111 1" To d,, ..f: t>m,r~t>n,y ,alq_ pil,,r in line from undn,i,le of c,li,,,l, -imilar Yalve at any nn, nf d,-i r, rnntr<,l point-. thth rdta~.:q.! I"' IJ1111lH'llli.ll lj'. prt--ur1 ,)11 1,, ("vlind,-r in Lark ,.f cl,aLll1t'1 f11- f~1ll vn ..... 11rt rf'rnaining 011 t'1or11 tlwn i~ a nd d,bin~ !<,ad 11f -,,. 1 dnd pnund--. cau~in~ in--t.u:! when pilot '-alvc is 01lt'n,d. \L,11, gency valve closes in din,tinn ,. an,l h~eom,- unhalance,l "lw11 T1, 1,.. p,11 thi- ,:11',. 11.rn,l t' I .ll l !I,<..: l... ,! 11 l I I k. '., 11 I (lr1, 1 i! 1/111H1:...:!1 111,i-tr pn' ......11/' t!] j r1i/1... lw1 II'...'. 1\11 p11,,1r i-, 1 ,,11,111n11l I'~, ( ,;1 l1rall/f!1. f,1,. /I '/1 f'\// '. / 1,1 ;;; /, Diesel Engine TYPE JS 4-rycle ,ngine i, niad,- in ., .. r. .. and 8-cvl units rated at J.:30 .',~::;- 61~1 and Iii.'; hp re,pecti\'P]y at -IOO rpm. B(,r, i, 13 in. stroke Iii in. Crank,hait i- 1-pi,,e, a,,, <fin .. diameter "'ttfI forgin:. \lain }war inf!" habbitt-lirwd -u,l -h,11- "ith ,him adju,trn,nt Eight pi-t .. 11 ring, arr 11..::t<l. five compn..;:---ion and tlinr fur oil 1011tr(,I, "ith 0111 nf the lattrr l,dr,w the pi .. ton pin. I ndi,idual c~ lindtr litJ.d .. di 1 !,oltt'd to nlind,r-lil,><k t.. p. .\lai11 ,.,h,- ,,.at dirf't'ti) ,n nlinrlt'r lwc1,l-. Out-id, ,,attr j1111qwr-. tran-..f,r ,,1,ilini! \\alt-r from cylinder, tfJ h,ad,, I ,.,ilin~-1, ,H,-r header is cast integral with n lind,r l,l,.,k. underneath air-intake ]wad,,, and ,,n ,.,.. haust side of engine. Cooling 1, at,r 1,a--1- from cvlinder heads by indi,idual 1ll1n" conneciions to exhaust-manifold jacket. Fuel-injection system is patented Coop,r- Ressemer atmo,pheric-relid t, pr. Fuel in- jPctors are mounted on cam-haft ho11sing ,over and are g,ar dri1!'11 fr,-,m ram-haft. Coo1,er-B e.,.":rner Cor11. \ft 1, rr,111. Ohio. Insulation FIREFOIL is in.,ulating matt-rial with characteristics of structural material. Primarily used for bulkheads r,n ship,. it i, n.. w said to he in use extensiVP]y as boiler casings, oven walls, linings for stack,. etc. It is made of alternate la1Prs of !lat and corrugated asbestos felt joirwd with new waterproof adhesiY('. '-aid to lw vermin-proof and to have sufficient strength after soaking in water for :-2 hours to withstand pres,ure of approximately 73 lb applied to one inch squarP rli, (,11 surface. Philip Carey Cu. Lockland. Cint'i11nati, Ohio 120 (190) Liquid-Level Controller \!11,\f.llltll. transmits lloat m,,n'mPnt thn,ugh mant'tic forct' instf>ad of rotarj -haft ,,r .,tulling bo,. Prn,id,,, ~-pnint 1 untn.J: pump n~gulation. l(lw~water cut ,,tf. luw-wat,r alarm. liigh\\J.tf'r alann. and l,i,,h-11at1r rntoff. !, mad, in two n,od,-1,.r, for ,rnrking pn--11rP- up to :'i'ill ii,. ~pecial tinie-d,la, rday a, ail:il,J., to ...:.ive proper control op<'ration l'Ytn 11ndtr ~11rgin~ \\ ater l,q} 11J1Hlition"'. Ffl'd fl Srhau/, f.'ni:rp: Co . .:~.; II nt f!,1ro11 '-t, Chirngo, FIi. Self-Propelled Air Compressor E1.rn1\-\U\G po11,r tak,.,,tf,. ,,1ra rom- pr,-.ur,. and trailt-r,. pomr unit \\ ill nplart ,tandard Fun! 111;Li1w 111 trtll'k. ( :omliination Pnin( and 111111pu......nr t'an :i., lw "JlPrat,d I" trnck dri11 r from t'al,. :-11ppli1, dm at 100-ll, prt,-,m. and ,- <l -1anda1d full--iz,d :-d1ra111n1 air 1111llJ)l'f-. ...or adapt,d for i11--tallati11n Ill tr111k. Ba--it'ally, unit j... 1-,! 1 ,ng111t and J-nl air compressor m an 8-cylinder hluck. Power cylindrrs are :'{os. 1 and 4 in nnP hank and 'lus. 2 and 3 in other t0 g:iw rqnal power and load. Whrn op- (hcrspced Vahc 1)1. \1 !'u!ll11n,d ... \,ip d'.'i \aht' pr(1\id, ... 111,11111Jl 1 (111:1,,i. t\n ... uri' a11d a11tornatit rt1,p111:11:-. air. g:a, or liq11id-. \\ li,,1 ,,, -.idt' 11f \al\1' i, of Ct11!\t'r1tio1u! t'!lHTg,~nt! ,cd\'t' !wing 011 tl1t ,1:h,: n,l ,,f tht .. t,m. \nrnrnlly. 1111tr:1nt'y , .ti\ 1 ,;d,,- di-C i- h,ld in 11111 up~n po,iti11n I,,. -1<r111 .. ,l11n,n in cylindPr. Emng:rncy \\ ith it:-- Pxt,~n:-ion an<l cltaranct pi--111 11 ,nmpri,e thr one moving part. U,,11.1r11,. pi,t11n, \\hich ha, no contact with ,, li11,I, r. i, .,11rro11nd,,d by ,team at air. ., 1 liq11id line pressure. 5t,am pa--.1_, ! ~- ____l~ ,.-_---J, -hml'n from I} thro11gh /J in ill11-r-. To dose emergency valvP. pilot , ., in line from underside uf cylind..r. similar valve at any one of d,,irPd r, :: control point, 1s momtntaril) .. ,.. thus n:leasin:~ prt-,surP ,1,nwn I cvlinder in ba,:k of clearanc, pist .. 11. '.\ f~ll pressure remaining on front ,,f ! there is a net closing load of -,11r ., drrd pounds, causing in.,tanl when pilot valve is optned. \L.1in gency valve clo,;es in dincti"n .. t and becomes unhalanc,,d "li,n To reopen this valre, hand 11r '"" valve is first dosed. In that I'"< POWER ,\fut,/,. I ! 1