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Category > Physics Posted 02 May 2017 My Price 5.00

Combustion gases passing through a 3-cm

 

Combustion gases passing through a 3-cm-internaldiameter circular tube are used to vaporize waste water at atmospheric pressure. Hot gases enter the tube at 115 kPa and 250°C at a mean velocity of 5 m/s, and leave at 150°C. If the average heat transfer coefficient is 120 W/m2 ?K and the inner surface temperature of the tube is 110°C, determine (a) the tube length and (b) the rate of evaporation of water

 

 

 
 

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Alpha Geek
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Status NEW Posted 02 May 2017 11:05 AM My Price 5.00

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file 1493724364-answer1.docx preview (120 words )
C-----------omb-----------ust-----------ion----------- ga-----------ses----------- pa-----------ssi-----------ng -----------thr-----------oug-----------h a----------- 3------------cm------------int-----------ern-----------ald-----------iam-----------ete-----------r c-----------irc-----------ula-----------r t-----------ube----------- ar-----------e u-----------sed----------- to----------- va-----------por-----------ize----------- wa-----------ste----------- wa-----------ter----------- at----------- at-----------mos-----------phe-----------ric----------- pr-----------ess-----------ure-----------. H-----------ot -----------gas-----------es -----------ent-----------er -----------the----------- tu-----------be -----------at -----------115----------- kP-----------a a-----------nd -----------250-----------°C----------- at----------- a -----------mea-----------n v-----------elo-----------cit-----------y o-----------f 5----------- m/-----------s, -----------and----------- le-----------ave----------- at----------- 15-----------0°-----------C. -----------If -----------the----------- av-----------era-----------ge -----------hea-----------t t-----------ran-----------sfe-----------r c-----------oef-----------fic-----------ien-----------t i-----------s 1-----------20 -----------W/m-----------2 ?-----------K a-----------nd -----------the----------- in-----------ner----------- su-----------rfa-----------ce -----------tem-----------per-----------atu-----------re -----------of -----------the----------- tu-----------be -----------is -----------110-----------°C-----------, d-----------ete-----------rmi-----------ne -----------(a)----------- th-----------e t-----------ube----------- le-----------ngt-----------h a-----------nd -----------(b)----------- th-----------e r-----------ate----------- of----------- ev-----------apo-----------rat-----------ion----------- of----------- wa-----------ter----------- Â-----------  -----------Nov----------- 14----------- 20-----------16 -----------04:-----------17
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