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Category > Physics Posted 02 May 2017 My Price 5.00

Water flowing in a long, aluminum tube

 

Water flowing in a long, aluminum tube is to be heated by air flowing perpendicular to the exterior of the tube. The ID of the tube is 1.85 cm, and its OD is 2.3 cm. The mass flow rate of the water through the tube is 0.65 kg/s, and the temperature of the water in the tube averages 30°C. The free-stream velocity and ambient temperature of the air are 10 m/s and 120°C, respectively. Estimate the overall heat transfer coefficient for the heat exchanger using appropriate correlations from previous chapters. State all your assumptions.

 

 

 

 
 

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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 1493725740-answer1.docx preview (143 words )
W-----------ate-----------r f-----------low-----------ing----------- in----------- a -----------lon-----------g, -----------alu-----------min-----------um -----------tub-----------e i-----------s t-----------o b-----------e h-----------eat-----------ed -----------by -----------air----------- fl-----------owi-----------ng -----------per-----------pen-----------dic-----------ula-----------r t-----------o t-----------he -----------ext-----------eri-----------or -----------of -----------the----------- tu-----------be.----------- Th-----------e I-----------D o-----------f t-----------he -----------tub-----------e i-----------s 1-----------.85----------- cm-----------, a-----------nd -----------its----------- OD----------- is----------- 2.-----------3 c-----------m. -----------The----------- ma-----------ss -----------flo-----------w r-----------ate----------- of----------- th-----------e w-----------ate-----------r t-----------hro-----------ugh----------- th-----------e t-----------ube----------- is----------- 0.-----------65 -----------kg/-----------s, -----------and----------- th-----------e t-----------emp-----------era-----------tur-----------e o-----------f t-----------he -----------wat-----------er -----------in -----------the----------- tu-----------be -----------ave-----------rag-----------es -----------30Â-----------°C.----------- Th-----------e f-----------ree------------st-----------rea-----------m v-----------elo-----------cit-----------y a-----------nd -----------amb-----------ien-----------t t-----------emp-----------era-----------tur-----------e o-----------f t-----------he -----------air----------- ar-----------e 1-----------0 m-----------/s -----------and----------- 12-----------0°-----------C, -----------res-----------pec-----------tiv-----------ely-----------. E-----------sti-----------mat-----------e t-----------he -----------ove-----------ral-----------l h-----------eat----------- tr-----------ans-----------fer----------- co-----------eff-----------ici-----------ent-----------
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