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10 points Air is heated while flowing through a hot pipe maintained at 124 °C. The...
“A pipe is carrying hot water through a cold storage facility. The ambient air in the...
“A pipe is carrying hot water through a cold storage facility. The ambient air in the cold storage has temperature of ?5?C. To maintain uniform temperature in the cold storage, blowers installed in the facility induce a 3 m/s velocity to the cold air (which can be assumed to be flowing across the water pipe). Hot water inside the pipe has a mean velocity of 0.5 m/s. The internal and exter- nal diameter of the pipe are 8.4 cm and...
Hot CO2 gas at a temperature T-1 = 250°C is flowing through a steel pipe (kı...
Hot CO2 gas at a temperature T-1 = 250°C is flowing through a steel pipe (kı = 70 W/(m.K)) whose inner and outer radiuses are 12 cm and 14 cm, respectively, in a cold environment at Tm2 = -10°C. As shown in the figure below, the steel pipe is insulated with 7.0 cm thick spray-foam insulation (k2 = 0.03 W/(m.K)) and 5.0 cm thick glassfiber insulation (k3 = 0.05 W/(m.K)). Consider the heat transfer coefficients of CO2 gas and the...
Hot atmospheric air (373 K) is forced through a 2 meter long pipe having a dismeder...
Hot atmospheric air (373 K) is forced through a 2 meter long pipe having a dismeder of 5 millimeters at a rate of 0.135gs There is heat transfer from the pipe to the air at a constant flux and the air exits the pipe at T-433 K Find the heat rate in units of Wats Use rluid properties at 400K
system, hot water at an average temperature of 80°C is flowing through a 15-m section of...
system, hot water at an average temperature of 80°C is flowing through a 15-m section of a cast In a heating iron pipe (k 50 W/m K) whose inner and outer diameters are 4 cm and 5 cm, respectively. The outer surface of the pipe, whose emissivity is 0.75, is exposed to the cold air at 10°C in the basement. with a heat transfer coefficient of 15 W/m2.K. The heat transfer coefficient at the inner surface of the pipe is...
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...
4. (25 pts) Water is flowing inside a thin wall, smooth pipe of diameter 0.05 m...
4. (25 pts) Water is flowing inside a thin wall, smooth pipe of diameter 0.05 m at a mass flowrate of 0.3 kg/s. The water enters the pipe at a mean temperature Tm,i= 80 °C and exits at Tm,o= 80 °C while the pipe surface temperature is maintained at Ts= 20 °C along its entire length. a. Is the flow turbulent or laminar? b. Calculate the average convection heat transfer coefficient inside the tube. c. Calculate the length of the...
Saturated liquid water flows through a pipe and is heated by a pump that vaporizes the...
Saturated liquid water flows through a pipe and is heated by a pump that vaporizes the water. The pipe has water flowing at a rate of 50 grams per second and at a pressure of 180 kPa. The pump receives heat from a reservoir at 10°C and supposedly requires 32 kW of power. a. Find the heat from pump required to vaporize the water in the pipe b. Find the temperature of the water inside the pipe. c. Find the...
Air flows steadily and adiabatically through a horizontal straight pipe. The air enters the pipe at...
Air flows steadily and adiabatically through a horizontal straight pipe. The air enters the pipe at an absolute pressure of 100 psia, a temperature of 1000F, and a linear velocity of 10 ft/sec. The air leaves at 2 psia. Assuming ideal gas, determine the velocity and temperature of the leaving air?
Hot water at 80°C flows through pipe is enclosed by a thin shell with a 120...
Hot water at 80°C flows through pipe is enclosed by a thin shell with a 120 mm diameter that is maintained at a temperature of 35°C. The space between the pipe and shell is completely filled with an insulative material (kins 0.05 W/m-K). Determine a.) the rate of heat loss per unit length (W/m) if the pipe and shell are concentric and b.) the rate of heat loss per unit length (W/m) if the pipe and shell centers are offset...
Qi. A flat plate of width 1 m and length 0.2m is maintained at a temperature of 32°C. Ambient fluid at 22"C fBlows across the top of the plate in parallel flow. Determine the average heat tr...
Qi. A flat plate of width 1 m and length 0.2m is maintained at a temperature of 32°C. Ambient fluid at 22"C fBlows across the top of the plate in parallel flow. Determine the average heat transfer coefficient, the convection heat transfer rate from the top of the plate, and the drag force on the plate for the following: (a) The Buid is water flowing at a velocity of 0.5 m/s. o) Water is flowing at a velocity of 2.5...
Hot CO2 gas at a temperature T-1 = 250°C is flowing through a steel pipe (kı = 70 W/(m.K)) whose inner and outer radiuses are 12 cm and 14 cm, respectively, in a cold environment at Tm2 = -10°C. As shown in the figure below, the steel pipe is insulated with 7.0 cm thick spray-foam insulation (k2 = 0.03 W/(m.K)) and 5.0 cm thick glassfiber insulation (k3 = 0.05 W/(m.K)). Consider the heat transfer coefficients of CO2 gas and the...
Hot atmospheric air (373 K) is forced through a 2 meter long pipe having a dismeder of 5 millimeters at a rate of 0.135gs There is heat transfer from the pipe to the air at a constant flux and the air exits the pipe at T-433 K Find the heat rate in units of Wats Use rluid properties at 400K
system, hot water at an average temperature of 80°C is flowing through a 15-m section of a cast In a heating iron pipe (k 50 W/m K) whose inner and outer diameters are 4 cm and 5 cm, respectively. The outer surface of the pipe, whose emissivity is 0.75, is exposed to the cold air at 10°C in the basement. with a heat transfer coefficient of 15 W/m2.K. The heat transfer coefficient at the inner surface of the pipe is...
4. (25 pts) Water is flowing inside a thin wall, smooth pipe of diameter 0.05 m at a mass flowrate of 0.3 kg/s. The water enters the pipe at a mean temperature Tm,i= 80 °C and exits at Tm,o= 80 °C while the pipe surface temperature is maintained at Ts= 20 °C along its entire length. a. Is the flow turbulent or laminar? b. Calculate the average convection heat transfer coefficient inside the tube. c. Calculate the length of the...
Hot water at 80°C flows through pipe is enclosed by a thin shell with a 120 mm diameter that is maintained at a temperature of 35°C. The space between the pipe and shell is completely filled with an insulative material (kins 0.05 W/m-K). Determine a.) the rate of heat loss per unit length (W/m) if the pipe and shell are concentric and b.) the rate of heat loss per unit length (W/m) if the pipe and shell centers are offset...
Qi. A flat plate of width 1 m and length 0.2m is maintained at a temperature of 32°C. Ambient fluid at 22"C fBlows across the top of the plate in parallel flow. Determine the average heat transfer coefficient, the convection heat transfer rate from the top of the plate, and the drag force on the plate for the following: (a) The Buid is water flowing at a velocity of 0.5 m/s. o) Water is flowing at a velocity of 2.5...
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After watching the lectures I am still having a hard time
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H0:μ=56.9
H1:μ<56.9
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