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Determine and illustrate the heat loss from the inner fluid to the outer fluid through the...
Determine the heat loss of seawater flowing through a 1 inch schedule 40 PVC pipe. The...
Determine the heat loss of seawater flowing through a 1 inch schedule 40 PVC pipe. The inner diameter of the pipe is 1 inch and the outer diameter is 1.049 inches. The temperature of the water is 50 degrees F and the outside air is 72 degrees F. The seawater is flowing at 3 GPM. The thermal conductivity of the PVC pipe is 0.20 [W/(mK)]. The heat transfer coefficient between the water and the pipe is 75 [W/m2K]. Take the same...
A stainless pipe having an inner wall thickness of 5 cm, an outer wall thickness of...
A stainless pipe having an inner wall thickness of 5 cm, an outer wall thickness of 5.5 cm and a thermal conductivity of 15 W/m˚C transfers steam at 320˚C from one location to another. The pipe is insulated with a 3 cm thick glass wool having a thermal conductivity of 0.038 W/m˚C. Heat is lost to the surroundings by natural convection and radiation at a rate of 15 W/m2˚C and the heat transfer coefficient inside the pipe is 80 W/m2˚C....
1. 1.08x106 grams/h of a superheated fluid flows through a pipe in a power plant. The...
1. 1.08x106 grams/h of a superheated fluid flows through a pipe in a power plant. The pipe is 1000 cm long, has an inner diameter of 0.05m and a wall thickness of 0.6 cm. The pipe has a thermal conductivity of 0.0017 kW/mK, and the inner pipe surface is at a uniform temperature of 393K. The temperature drop between the inlet and exit of the pipe is 7K, and the constant pressure specific heat of vapor is 2190 J/kgK. If...
Steam at T = 300C flows in a cast iron pipe shell with thermal conductivity k1=80W/mC,...
Steam at T = 300C flows in a cast iron pipe shell with thermal conductivity k1=80W/mC, inner and outer diameter D1 = 5cm, and D2 =6cm respectively, and length L = 1m (notice that the cast iron pipe shell is a zone of conduction physically realized by the space between two concentric cylinders). The heat transfer coefficient for the steam inside the pipe is h1 = 60 W/m2. Furthermore, heat is lost to the surroundings at T2 = 5C through...
Compute the heat transfer rate from the overall energy balance for the hotcold fluid. Do the...
Compute the heat transfer rate from the overall energy balance for the hotcold fluid. Do the numbers agree reasonably well? Explain any differences. Dimensions & Constants Inner pipe inside diameter, D,-8.1 mm (0.319 in), Inner pipe outside diameter, D,-9.525 mm (3/8), Wall thickness, tw 0.71 mm (0.028 in), Inner pipe material: 304 stainless steel, kw = 16.3 W /m-K (9.4 Btuft hop), Outer square-channel width-16 mm, Tube length- 410 mm (16.14 in) Experimental DLMX Data Set Flow Rates and Record...
heat exchanger has water in the outer conduit and ethylene glycol in the inner. It is...
heat exchanger has water in the outer conduit and ethylene glycol in the inner. It is desired to have a Reynolds number of 1000 in the inner conduit and 15000 in the outer conduit. The inner conduit is 5mm inside diameter and the outer conduit is 12mm inside diameter. Specify the pressure drop per unit length in the each conduit (Pa/m). The inner conduit has a wall thickness of 0.75 mm.
water flowing through a smooth pipe of inner diameter di = 25 mm is heated at...
water flowing through a smooth pipe of inner diameter di = 25 mm is heated at the rate from 30 c to 50 c. the mass flow rate is of 1 kg/s. the wall temperature of the pipe is measured to be 9.1 c above the average fluid temperature all along its length. a. what is the length of the tube required for heating? b. what are the values of the heat flux and the temperature of the wall at...
Heat transfer
A 10 m long and 10 mm inner diameter pipe made of commercial steel (roughness height = 0.046 mm) is used to heat a liquid in an industrial process. The liquid enters the pipe with Tin = 25oC and V = 0.8 m/s. A uniform heat flux is maintained by an electric resistance heater wrapped around the outer surface of the pipe so that the fluid exits at Texit = 75oC. Taking the average fluid properties to be: ρ =...
Water enters through a thick-walled tube having inner and outer diameters of 19 and 38 mm and 20 m long
Water enters through a thick-walled tube having inner and outer diameters of 19 and 38 mm and 20 m long The inlet temperature is Tmi=17℃ and outlet temperature is Tmo = 50°C. The outer surface of the tube is well Insulated, and electrical heating within the wall provides for a uniform generation rate of q = 8X105 W/m3. If the inner surface temperature of the tube Ts = 60 °C at the outlet what is the local convection heat transfer...
a) what is the heat loss per unit length from the pipe in W/m? b) Estimate...
a) what is the heat loss per unit length from the pipe in
W/m?
b) Estimate the heat loss per unit length if a 50 mm thick layer
of insulation with a conductivity of 0.058 W/m K. Neglect radiation
for this part.
3. A 0.20-m diameter, thin-walled steel pipe is used to transport saturated steam at a temperature of 486K in a room for which the air temperature is 25°C and convection heat transfer coefficient at the outer surface of...
Compute the heat transfer rate from the overall energy balance for the hotcold fluid. Do the numbers agree reasonably well? Explain any differences. Dimensions & Constants Inner pipe inside diameter, D,-8.1 mm (0.319 in), Inner pipe outside diameter, D,-9.525 mm (3/8), Wall thickness, tw 0.71 mm (0.028 in), Inner pipe material: 304 stainless steel, kw = 16.3 W /m-K (9.4 Btuft hop), Outer square-channel width-16 mm, Tube length- 410 mm (16.14 in) Experimental DLMX Data Set Flow Rates and Record...
a) what is the heat loss per unit length from the pipe in
W/m?
b) Estimate the heat loss per unit length if a 50 mm thick layer
of insulation with a conductivity of 0.058 W/m K. Neglect radiation
for this part.
3. A 0.20-m diameter, thin-walled steel pipe is used to transport saturated steam at a temperature of 486K in a room for which the air temperature is 25°C and convection heat transfer coefficient at the outer surface of...
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