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DC boilers final exam review 2024

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Institution DC BOILER
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DC boilers final exam review 2024 The following considerations must be taken into account when designing a boiler except _________________. Unresponsive to sudden steam demands The code written by the American Society of Mechanical Engineers that governs and controls the types of materials, methods of construction and procedures used in the installation of boilers is the ____________________. ASME code _______________________ consist of the all parts of the boiler which are exposed on one side to the gases of combustion and on the other side to the water and steam being heated. Total heating surface area

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DC boilers final exam review 2024

Thexboilerxshownxinxthexillustrationxbelowxisxax___________________.x-
xANSWERxHorizontalxreturnxtubexboiler




"A",x"D"xandx"O"xtypexboilersxarexclassifiedxasx____________________xboilerxdesignsx-
xANSWERxwaterxtube




Thexfollowingxconsiderationsxmustxbextakenxintoxaccountxwhenxdesigningxaxboilerxexceptx__________
_______.x-xANSWERxUnresponsivextoxsuddenxsteamxdemands



ThexcodexwrittenxbyxthexAmericanxSocietyxofxMechanicalxEngineersxthatxgovernsxandxcontrolsxthextyp
esxofxmaterials,xmethodsxofxconstructionxandxproceduresxusedxinxthexinstallationxofxboilersxisxthex___
_________________.x-xANSWERxASMExcode



_______________________xconsistxofxthexallxpartsxofxthexboilerxwhichxarexexposedxonxonexsidextoxth
exgasesxofxcombustionxandxonxthexotherxsidextoxthexwaterxandxsteamxbeingxheated.x-
xANSWERxTotalxheatingxsurfacexarea




Howxmanyxpassesxarexshownxinxthexboilerxillustrationxbelow.x-xANSWERx1



Methodsxofxboilerxwaterxcirculationxincludex______________________.x-xANSWERxnaturalxandxforced



Advantagesxofxaxfirextubexboilerxincludexallxofxthexfollowingxexceptx_____________________________
______.x-
xANSWERxAxwaterxtubexboilerxhasxslowerxheatxtransferxratesxfromxthexhotxexhaustxgasesxtoxthexwater
xwhichxresultsxinxmorexrapidxchanges.

,Thex______________xisxthexhighestxpressurexinxpoundsxperxsquarexinchxatxwhichxaxboilerxcanxbexsafel
yxoperated.x-xANSWERxMAWP



Thexevaporationxofx34.5xlbsxofxwaterxperxhourxfromxfeedxwaterxatx212xF,xatxatmosphericxpressurexisx_
_____________________.x-xANSWERxonexboilerxhorsexpower



Thex______________xisxwherexthexcombustionxprocessxtakesxplacexwithinxthexboiler.x-
xANSWERxfurnace




Thexsaturatedxsteamxoutletxinxthexboilerxillustrationxbelowxisxidentifiedxbyxthexletter,x________.x-
xANSWERxe




Inxthexillustrationxbelow,xwhatxASMExLetterxcodexdesignatesxanxAMSExapprovedxpowerxboiler.xNote:xt
hexletterxinsidexthex"cloverleaf"xsymbol.x-xANSWERxS



Totalxheatingxsurfacesxonxaxboilerxincludex_____________________________________.x-
xANSWERxallxofxthexabove




Boilersxcanxbexclassifiedxbyxallxofxthexfollowingxmethodsxexceptx_______________.x-
xANSWERxallxofxthexabove




WhatxASMExLetterxcodexdesignatesxanxASMExapprovedxsafetyxvalvexdesign.xSeexillustrationxbelow.x-
xANSWERxv




Inxthexillustrationxbelow,xthexboilerxtubesxarexidentifiedxbyxthexletter,x_________.x-xANSWERxB



Axfirextubexboilerxthatxconsistxofxaxshellxthatxcontainsxtubexsheetsxandxisxmountedxaxfireboxxorxfurnac
exisxax__________________________.x-xANSWERxHRTxboiler

, Axboilerxdesignedxasxaxself-
containedxunit,xusuallyxinternallyxfiredxwithxmultiplexgasxpassesxandxoperatingxatxsteamxpressuresxupxt
ox250xpsixisxclassifiedxasxax_______________.x-xANSWERxPackagexfirextubexboiler



Axpowerxplantxthatxusesxthexhotxexhaustxgasesxfromxaxgasxturbinexenginextoxproducexsteamxforxusexin
xaxsteamxturbinextoxproducexadditionalxenergyxinxcalledxax_____________.x-
xANSWERxcombinedxcyclexpowerxplant




Withxregardxtoxmanholexandxhandholdxgaskets,xASMExCodexrequiresxthatxthexminimumxgasketxsurface
xwidthxbexnoxlessxthanx____________inchx,xwithxnoxgasketxthicknessxmorexthanx_______inchxwhenxco
mpressed.x-xANSWERx11/16",x1/4"



Whatxtypexofxboilerxisxshownxinxthexillustrationxbelow?x-
xANSWERxAx2xdrumxsinglexfurnacex"D"xtypexboilerxwithxhorizontalxsuperheater,xeconomizer,xwaterwall
sxandxdowncomers.



Whichxofxthexfollowingxstatementsxrepresentxthexmajorxdifferencexbetweenxaxboilerxdrumxandxaxboile
rxheader?x-xANSWERxthexsizexeachxeachxisxsignificantlyxdifferent



Onexfunctionxofxthexcomponentxlabeledx"C"xshownxinxthexbelowxillustrationxisxtox_________________
________.x-
xANSWERxdistributexthexwaterxtoxthexwatewallxtubesx&xprovidexaxcollectingxareaxforxsedimentxandxslu
dge



Thexwaterxorxmudxdrumxisxindicatedxinxthexillustrationxbelowxbyxthexletterx________________.x-
xANSWERxi




Thextubesxinxaxwaterxtubexboilerxthatxconnectxthexsteamxandxmudxdrumsxandxwho'sxprimaryxpurposex
isxtoxgeneratexsteamxfromxwaterxflowingxthroughxthemxisxknownxasxthex_____________xtubexbank.x-
xANSWERxgenerating

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  • dc boilers final exam review 2024
  • the boiler shown in the illustration below is a
  • a d and o type boilers are classified as
  • the following considerations must be taken into ac

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