9. A stainless steel tube having an outside diameter of 0.6 cm and a wall thickness...

9. A stainless steel tube having an outside diameter of 0.6 cm and a wall thickness of 0.05 cm is to be insulated with a material having a thermal conductivity of 0.065 W/mK. If the inner and outer convective heat transfer coefficients are 5.9 W/m²K. what will be the heat loss per meter of length for insulation thicknesses of 0, 0.25, 0.5, 0.75, 1.00, and 1.25 cm if the inside temperature is 95 C and the outside temperature is 10 C? Plot heat loss per meter versus insulation thickness. Also, plot the surface and interface temperatures as a function of insulation thickness.

Solutions

Expert Solution

genius_generous answered 3 weeks ago

Next > < Previous

Related Solutions

Liquid bismuth flows at a rate of 4.5 kg/s through a 5.0-cm-diameter stainless-steel tube. The bismuth...

Liquid bismuth flows at a rate of 4.5 kg/s through a 5.0-cm-diameter stainless-steel tube. The bismuth enters at 415oC and is heated to 440oC as it passes through the tube. If a constant heat flux is maintained along the tube and the tube wall is at a temperature 20oC higher than the bismuth bulk temperature, calculate the length of tube required to effect the heat transfer. For liquid bismuth: ? = 1.34 ?10-3 kg/m· s Cp = 0.149 kJ/kg.oC k...

A stainless steel (AISI 316) tube used to transport a chilled pharmaceutical has an inner diameter...

A stainless steel (AISI 316) tube used to transport a chilled pharmaceutical has an inner diameter of 30 mm and a wall thickness of 3 mm. The pharmaceutical and ambient air are at temperatures of 6oC and 23oC, respectively, while the corresponding inner and outer convection coefficients are 400 W/m2 K and 6 W/m2 K, respectively. (a) What is the heat gain per unit tube length? (b) What is the heat gain per unit length if a 10-mm thick layer...

Air at 60oC and 1 atm enters a smooth tube having a diameter of 2 cm...

Air at 60oC and 1 atm enters a smooth tube having a diameter of 2 cm and length of 10 cm. The air velocity is 40 m/s: 1- What constant heat flux must be applied at the tube surface to result in an air temperature rise of 5oC? 2- What average wall temperature would be necessary for this case? Answer: (1) qs = 11841W/m2 (2) Tw = 97oC

If the 2.00 cm diameter inlet tube narrows to 1.00 cm in diameter, what is the...

If the 2.00 cm diameter inlet tube narrows to 1.00 cm in diameter, what is the pressure drop in the narrow section for the 2.16 m/s airflow in the 2.00 cm section? (Suppose the air density is 1.25 kg/m3.) a. 20.3 Pa b. 11.7 Pa c. 45.7 Pa d. 43.7 Pa Two rigid objects, a ring and solid disc, have the same mass, radius and angular velocity. If the same braking torque is applied to each one, which takes longer...

. A steam main (outside diameter of 16.8 cm and inside diameter of 15.4 cm) is...

. A steam main (outside diameter of 16.8 cm and inside diameter of 15.4 cm) is covered with 5-cm of high temperature insulation (k = 0.095 W/m. K) and 3.8 cm of lower temperature insulation (k = 0.07W/m. K). Calculate the heat loss from 150 m pipe assuming that inner and outer surface temperatures of the insulation are 450 and 30 °C, respectively. Also determine the temperature at the interface between two layers of insulation (10 points).

The following are the load and gage lengths from a stainless steel. The diameter of the...

The following are the load and gage lengths from a stainless steel. The diameter of the bar is 0.506 inch. Plot engineering stress versus engineering strain for the data shown. Find the 0.2% offset yield strength for this steel. Gage length (mm) Load (N) 50.8 0 50.8102 4.590x103 50.8203 9.779x103 50.8305 14.670x103 50.8406 19.560x103 50.8508 24.450x103 50.861 27.620x103 50.8711 29.300x103 50.9016 32.680x103 50.927 33.950x103 50.9524 34.580x103 50.9778 35.220x103 51.0032 35.720x103 51.816 40.540x103 53.34 48.390x103 55.88 59.030x103 58.42 65.870x103 60.96 69.420x103...

A cylindrical tube of mean radius 1” and wall thickness 0.1” is subjected to an internal...

A cylindrical tube of mean radius 1” and wall thickness 0.1” is subjected to an internal pressure p = 300 psi and a torque T = 2000 lb-in. The ends of the tube are closed. Find the safety factor against yielding if the material yields in uniaxial tension at SY = 8 ksi and Von Mises theory is used.

In a sample of 100 steel canisters, the mean wall thickness was 8.1 mm with a...

In a sample of 100 steel canisters, the mean wall thickness was 8.1 mm with a standard deviation of 0.5 mm. Find a 95% lower confidence bound for the mean wall thickness. (Round the final answer to three decimal places.) The 95% lower confidence bound is

If there is a MCM-41 which has wall thickness of 1 nm and pore diameter of...

If there is a MCM-41 which has wall thickness of 1 nm and pore diameter of 3 nm, where would I observe the XRD(2theta) peak?

Consider a 9 mm diameter circular tube, calculate the length of tube that is required to...

Consider a 9 mm diameter circular tube, calculate the length of tube that is required to transfer 100 W of water that circulates through the tube at a rate of 0.08 kg / s. The temperature of the water is kept constant at 50 ° C and the wall of the tube is maintained at 45 ° C.

Subjects