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In the final stages of production, a pharmaceutical is sterilized by heating it from 25 to 75°C a...
2. (10 points) A pharmaceutical fluid is sterilized by heating it from 25 to 75 °C...
2. (10 points) A pharmaceutical fluid is sterilized by heating it from 25 to 75 °C as it moves at 0.2 m/s through a straight thin-walled stainless steel tube of 12.7-mm diameter that is 10 m long. A uniform heat flux is maintained by an electric resistance heater wrapped around the outer surface of the straight tube. The pharmaceutical fluid properties may be approximated as: p = 1000 kg/mº, cp = 4 kJ/kg-K, u = 2.102 kg/s-m, k = 1...
April 11, 2019 Name Problem # 1-55 points In the final stages of production, a supply fluid for a...
April 11, 2019 Name Problem # 1-55 points In the final stages of production, a supply fluid for a hospital is sterilized by heating it from 25°C to 80°C, as it moves at 0.2 m/s through a straight thin- walled stainless steel tube of 15-mm diameter, and 10 meter in length. The tube is surrounded by water at 100°C Treating this set-up as a heat exchanger, determine the log-mean temperature difference Assuming zero resistance to heat transfer through the stainless...
QUESTION 5 A 12-m-long and 11-mm-inner-diameter pipe made of commercial steel is used to heat a...
QUESTION 5 A 12-m-long and 11-mm-inner-diameter pipe made of commercial steel is used to heat a liquid in an industrial process. The liquid enters the pipe with T; = 20°C, 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 60°C. Assuming fully developed flow and taking the average fluid properties to be p = 992.1 kg/m2, k = 0.631 W/m-°C, Cp =...
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 is to be heated from 10 °C to 83 °C as it flows through a...
Water is to be heated from 10 °C to 83 °C as it flows through a 0.015 m-internal-diameter, 13-m-long tube. The tube is equipped with an electric resistance heater, which provides uniform heating throughout the surface of the tube. The outer surface of the heater is well insulated, so that in steady operation all the heat generated in the heater is transferred to the water in the tube. The system provides hot water at a rate of 5 L/min Assumelp...
1. Consider a 5 m long rectangular tube with a hot fluid with the properties specified in the diagram below. The inlet...
1. Consider a 5 m long rectangular tube with a hot fluid with the properties specified in the diagram below. The inlet and outlet fluid temperatures are controlled to vary from 20 to 30 °C by applying a constant heat flux at the surface of the tube. We can ignore conduction and radiation phenomena in this problem and assume that the fluid velocity profile does not change within the tube. Using the Nu correlation from table 8.1 below, find the...
SME 4463/SKMM 3443 Q3. (a) Water is heated from 15oC to 75°C as it flows through...
SME 4463/SKMM 3443 Q3. (a) Water is heated from 15oC to 75°C as it flows through a 2.5-cm-internal-diameter, 15-m long tube. The tube is equipped with an electric resistance heater, which provides uniform heating throughout the surface of the tube. The outer surface of the heater is well insulated, so that in steady state operation all the heat generated in the heater is transferred to the water in the tube. If the system is to provide hot water at a...
When using the apparatus from this experiment, the average heat flux at the heater surface is...
When using the apparatus from this experiment, the average heat flux at the heater surface is calculated to be 7.2 kW/m2 and the temperature difference between the heater surface and freestream fluid temperature is 70°C. Calculate the Nusselt number (assume thermal conductivity of air = 0.02587 W/m-K). Answer: 62.82
A) Determine the convection heat transfer coefficient for the flow of air. [W/m2·°C] B) Determine the...
A) Determine the convection
heat transfer coefficient for the flow of air.
[W/m2·°C]
B) Determine the convection heat transfer coefficient for water.
[W/m2·°C]
The velocity of the fluid is 9 m/s in an 8-cm diameter and 7-m-long tube when the tube is subjected to uniform heat flux from all surfaces. Use fluid properties at 25°C. Water or Air D 8 cm L=7 m Given: The properties of air at 25°C are: k 0.02551 W/m."C v 1.562 10-5 m2/s Pr =...
Twenty [kw] of heat is to be removed from 375 [k] water flowing at 0.15 [kg/s] into the inner pipe of concentric tube heat exchanger. Cooling water enters the annulus at 290 [k] and leaves at 320...
Twenty [kw] of heat is to be removed from 375 [k] water flowing at 0.15 [kg/s] into the inner pipe of concentric tube heat exchanger. Cooling water enters the annulus at 290 [k] and leaves at 320 [k] with a flow in the opposite direction of the inner flow. The diameter of the thin- walled inner pipe is 2.5 [cm] a) b) c) Calculate the exit temperature of the hot fluid and the mass flow rate of the cold fluid...
2. (10 points) A pharmaceutical fluid is sterilized by heating it from 25 to 75 °C as it moves at 0.2 m/s through a straight thin-walled stainless steel tube of 12.7-mm diameter that is 10 m long. A uniform heat flux is maintained by an electric resistance heater wrapped around the outer surface of the straight tube. The pharmaceutical fluid properties may be approximated as: p = 1000 kg/mº, cp = 4 kJ/kg-K, u = 2.102 kg/s-m, k = 1...
April 11, 2019 Name Problem # 1-55 points In the final stages of production, a supply fluid for a hospital is sterilized by heating it from 25°C to 80°C, as it moves at 0.2 m/s through a straight thin- walled stainless steel tube of 15-mm diameter, and 10 meter in length. The tube is surrounded by water at 100°C Treating this set-up as a heat exchanger, determine the log-mean temperature difference Assuming zero resistance to heat transfer through the stainless...
QUESTION 5 A 12-m-long and 11-mm-inner-diameter pipe made of commercial steel is used to heat a liquid in an industrial process. The liquid enters the pipe with T; = 20°C, 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 60°C. Assuming fully developed flow and taking the average fluid properties to be p = 992.1 kg/m2, k = 0.631 W/m-°C, Cp =...
Water is to be heated from 10 °C to 83 °C as it flows through a 0.015 m-internal-diameter, 13-m-long tube. The tube is equipped with an electric resistance heater, which provides uniform heating throughout the surface of the tube. The outer surface of the heater is well insulated, so that in steady operation all the heat generated in the heater is transferred to the water in the tube. The system provides hot water at a rate of 5 L/min Assumelp...
1. Consider a 5 m long rectangular tube with a hot fluid with the properties specified in the diagram below. The inlet and outlet fluid temperatures are controlled to vary from 20 to 30 °C by applying a constant heat flux at the surface of the tube. We can ignore conduction and radiation phenomena in this problem and assume that the fluid velocity profile does not change within the tube. Using the Nu correlation from table 8.1 below, find the...
SME 4463/SKMM 3443 Q3. (a) Water is heated from 15oC to 75°C as it flows through a 2.5-cm-internal-diameter, 15-m long tube. The tube is equipped with an electric resistance heater, which provides uniform heating throughout the surface of the tube. The outer surface of the heater is well insulated, so that in steady state operation all the heat generated in the heater is transferred to the water in the tube. If the system is to provide hot water at a...
When using the apparatus from this experiment, the average heat flux at the heater surface is calculated to be 7.2 kW/m2 and the temperature difference between the heater surface and freestream fluid temperature is 70°C. Calculate the Nusselt number (assume thermal conductivity of air = 0.02587 W/m-K). Answer: 62.82
A) Determine the convection
heat transfer coefficient for the flow of air.
[W/m2·°C]
B) Determine the convection heat transfer coefficient for water.
[W/m2·°C]
The velocity of the fluid is 9 m/s in an 8-cm diameter and 7-m-long tube when the tube is subjected to uniform heat flux from all surfaces. Use fluid properties at 25°C. Water or Air D 8 cm L=7 m Given: The properties of air at 25°C are: k 0.02551 W/m."C v 1.562 10-5 m2/s Pr =...
Twenty [kw] of heat is to be removed from 375 [k] water flowing at 0.15 [kg/s] into the inner pipe of concentric tube heat exchanger. Cooling water enters the annulus at 290 [k] and leaves at 320 [k] with a flow in the opposite direction of the inner flow. The diameter of the thin- walled inner pipe is 2.5 [cm] a) b) c) Calculate the exit temperature of the hot fluid and the mass flow rate of the cold fluid...
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