Heat Transfer - Determine the rate of heat loss from the steam per unit length of pipe

Steam at 320oC flows in a stainless steel pipe (k = 15W/m. oC) whose inner and out diameters are 5 cm and 5.5 cm, respectively. The pine is covered with 3-cm-thick glass wool insulation (k = 0.038W/m. oC). Heat is lost to the sur-roundings at 5oC by natural convection and radiation, with a combined natural convection and radiation heat transfer coefficient of 15 W/m2. oC, Takin the heat tranfer coefficient inside the pipe to be 80 W/m2. oC, determine the rate of heat loss from the steam per unit length of the pipe. Also determine the temperature drops across the pipe shell and the insulation

[@olanrewajugabriel8333]

GREAT! GREAT WORK,VERY HELPFUL,THANKS FOR YOUR EFFORT

[@jaymevada8918]

What if coefficient are in W/m2 K? how to convert them to W/m2 *C?

[@maddymaddy3231]

What If the heat transfer coefficients hc values are not given!!??

[@John-ge2hy]

hi, what happens to the part (Pi*D)/4 for area of cylinder, why not use it ? thanks

[@lukemiller6047]

Hi, was wondering which textbook this came out of?

[@michaeln2057]

Cheers Dude!!

[@zeba6547]

Thnku so much..

[@DarshanPatel-ni9gt]

I swear, Mene kaha kha nhi dhundha is example Ko bhai, tutorial me diya tha , ma'am ne😂

[@user-lm8ql4mx5r]

Mr.kittipon khaongam

[@TimTacTV]

Ughhhhhh you didn't answer this correctly though! It asks for rate of heat transfer PER UNIT LENGTH. You only solved for Qdot. You're supposed to solve for Qdot/L. I needed that for my homework my dude

[@lukemiller6047]

he uses 1m as his length in all the equations, therefore it is per length

[@TimTacTV]

@Crickethighlights293 lol 5 years later