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Saturated steam at 1 atm condenses on a vertical 200 mm diameter pipe, 9 m long....
Saturated steam at 1 atm condenses on a vertical 200 mm diameter pipe, 9 m long....
Saturated steam at 1 atm condenses on a vertical 200 mm diameter pipe, 9 m long. The pipe surface is at 90 C. Find the total condensation mass flow rate.
The correct answers are 16 kW and 7.1 times 10^-3 kg/s 10.46 Saturated steam at 1...
The correct answers are 16 kW and 7.1 times 10^-3 kg/s
10.46 Saturated steam at 1 atm condenses on the outer surface of a vertical, 100-mm-diameter pipe 1 m long, having a uniform surface temperature of 94°C. Esti- mate the total condensation rate and the heat transfer rate to the pipe.
A steel pipe carrying saturated steam at 4000 kpa, is 304.8 mm OD. The pipe is...
A steel pipe carrying saturated steam at 4000 kpa, is 304.8 mm OD. The pipe is 150 m long. Temp outside the pipe is 18 degrees C. It is insulated with formed insulation with thermal conductivity of 0.023 W/m/K. If the design is to allow for condensation of 80 kg of steam per hour, how thick must the insulation be?
Problem 2 (10/30) - Steam at 180 C (saturated) enters a 10 cm diameter, 0.4 mm thick, 150 m long carbon steel pipe which is exposed to the elements. Air flows across the pipe at 10 m/sec. Air emperat...
Problem 2 (10/30) - Steam at 180 C (saturated) enters a 10 cm diameter, 0.4 mm thick, 150 m long carbon steel pipe which is exposed to the elements. Air flows across the pipe at 10 m/sec. Air emperature is 20 C. Convective heat transfer of stem to the pipe is very high. Emissivity of the pipe is estimated at 0.8.Calculate the rate of heat transfer from the pipe. State any assumptions.
Problem 2 (10/30) - Steam at 180 C...
A vertical tube has an outer diameter of 150 mm. The pipe is 4 m long...
A vertical tube has an outer diameter of 150 mm. The pipe is 4 m
long and the outdoor temperature is 60 C. The room temperature is
20 oC. The heat transfer coefficient,
,for the air is 6
Calculate heat transfer / heat flow / heat output W from pipe to
air.
A vertical tube has an outer diameter of 150 mm. The pipe is 4 m
long and the outdoor temperature is 60 oC. The room temperature is
20...
a 0.4 m diameter, thin walled steel pipe is used to transport saturated steam Problem 3.049...
a 0.4 m diameter, thin walled steel pipe is used to transport
saturated steam
Problem 3.049 A 0.4-m-diameter, thin-walled steel pipe is used to transport saturated steam at a pressure of 20 bars in a room for which the air temperature is 25°C and the convection heat transfer coefficient at the outer surface of the pipe is 20 W/m2-K. (a) What is the heat loss per unit length from the bare pipe (no insulation)? (b) Estimate the heat loss per...
4. A pure copper pipe with inner diameter Di-10 mm ard outer diameter Do-14 mm is surrounded by s...
4. A pure copper pipe with inner diameter Di-10 mm ard outer diameter Do-14 mm is surrounded by saturated steam with pressure p 172 bar and convection coefficient h 6000 carries water with mean velocity u- (a) Determine the convective heat transfer coefficient inside the pipe for water at mean temperature Tm 37° C (b) At this same location, determine the total thermal resistance (per unit length) between the water and the steam. (c) Determine the heat transfer rate (per...
6. A pure copper pipe with inner diameter Di = 12 mm and outer diameter Do-15...
6. A pure copper pipe with inner diameter Di = 12 mm and outer diameter Do-15 mm is surrounded by saturated steam with pressure p 08 bar and convection coefficient h,-7000R. The pipe carries water with a convection coefficient h _ 5000 m2 R. Determine the steam condensation rate (per unit length) around the pipe at the location where the mean water temperature reaches 95°C.
3. CIN: A 50 m long section of a steam pipe at 15°C. The average temperature...
3. CIN: A 50 m long section of a steam pipe at 15°C. The average temperature of the outer surface of combined heat transfer coefficient or the rate of heat loss from the steam plp generated in an natural gas furnance $0.52/therm (1 therm = 105, 0.035 W/mK) needed in order to say remain constant at 150°C. (10 marks) For a steam pipe whose outer diameter is 10 cm passes through an open space mperature of the outer surface of...
Two reservoirs are joined by three pipes in series; Pipe 1 is 300 mm in diameter...
Two reservoirs are joined by three pipes in series; Pipe 1 is 300 mm in diameter and 300 m long and has λ = 0.019; Pipe 2 is 200 mm in diameter, 150 m long and has λ = 0.021; and Pipe 3 is 250 mm in diameter and 250 m long and has λ = 0.020. They are conveying water at 15oC. If the height difference between the top water levels is 10 m, find the flow rate ignoring...
Saturated steam at 1 atm condenses on a vertical 200 mm diameter pipe, 9 m long. The pipe surface is at 90 C. Find the total condensation mass flow rate.
The correct answers are 16 kW and 7.1 times 10^-3 kg/s
10.46 Saturated steam at 1 atm condenses on the outer surface of a vertical, 100-mm-diameter pipe 1 m long, having a uniform surface temperature of 94°C. Esti- mate the total condensation rate and the heat transfer rate to the pipe.
Problem 2 (10/30) - Steam at 180 C (saturated) enters a 10 cm diameter, 0.4 mm thick, 150 m long carbon steel pipe which is exposed to the elements. Air flows across the pipe at 10 m/sec. Air emperature is 20 C. Convective heat transfer of stem to the pipe is very high. Emissivity of the pipe is estimated at 0.8.Calculate the rate of heat transfer from the pipe. State any assumptions.
Problem 2 (10/30) - Steam at 180 C...
A vertical tube has an outer diameter of 150 mm. The pipe is 4 m
long and the outdoor temperature is 60 C. The room temperature is
20 oC. The heat transfer coefficient,
,for the air is 6
Calculate heat transfer / heat flow / heat output W from pipe to
air.
A vertical tube has an outer diameter of 150 mm. The pipe is 4 m
long and the outdoor temperature is 60 oC. The room temperature is
20...
a 0.4 m diameter, thin walled steel pipe is used to transport
saturated steam
Problem 3.049 A 0.4-m-diameter, thin-walled steel pipe is used to transport saturated steam at a pressure of 20 bars in a room for which the air temperature is 25°C and the convection heat transfer coefficient at the outer surface of the pipe is 20 W/m2-K. (a) What is the heat loss per unit length from the bare pipe (no insulation)? (b) Estimate the heat loss per...
4. A pure copper pipe with inner diameter Di-10 mm ard outer diameter Do-14 mm is surrounded by saturated steam with pressure p 172 bar and convection coefficient h 6000 carries water with mean velocity u- (a) Determine the convective heat transfer coefficient inside the pipe for water at mean temperature Tm 37° C (b) At this same location, determine the total thermal resistance (per unit length) between the water and the steam. (c) Determine the heat transfer rate (per...
6. A pure copper pipe with inner diameter Di = 12 mm and outer diameter Do-15 mm is surrounded by saturated steam with pressure p 08 bar and convection coefficient h,-7000R. The pipe carries water with a convection coefficient h _ 5000 m2 R. Determine the steam condensation rate (per unit length) around the pipe at the location where the mean water temperature reaches 95°C.
3. CIN: A 50 m long section of a steam pipe at 15°C. The average temperature of the outer surface of combined heat transfer coefficient or the rate of heat loss from the steam plp generated in an natural gas furnance $0.52/therm (1 therm = 105, 0.035 W/mK) needed in order to say remain constant at 150°C. (10 marks) For a steam pipe whose outer diameter is 10 cm passes through an open space mperature of the outer surface of...
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