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A hydraulic power requires the oil cooling from a temperature of 90°C and it is proposed...
Required information A shell-and-tube heat exchanger is used for cooling 47 kg/s of a process stream...
Required information A shell-and-tube heat exchanger is used for cooling 47 kg/s of a process stream flowing through the tubes from 160°C to 136°C. This heat exchanger has a total of 100 identical tubes. each with an inside diameter of 2.5 cm and negligible wall thickness. The average properties of the process stream are: p = 950 kg/m”, k = 0.50 W/mK, Cp=3.5 kJ/kg.K, and -20 mPas The coolant stream is water (cp=4.18 kJ/kg K) at a flow rate of...
A concentric tube heat exchanger for cooling lubricating oil consists of a thin-walled inner tube of...
A concentric tube heat exchanger for cooling lubricating oil
consists of a thin-walled inner tube of 25 mm diameter carrying
water and an outer tube of 45 mm diameter carrying the oil. The
exchanger operates in countercurrent flow with an overall heat
transfer coefficient of 55 W/m2 K and the tabulated average
properties given below. Mass flow rates of oil and water are both
0.1 kg/s, oil enters the exchanger at 100°C, and water enters the
exchanger at 30°C. (a)...
A thin-walled double-pipe counter-flow heat exchanger is to be used to cool oil (cp-2200 /kg K)...
A thin-walled double-pipe counter-flow heat exchanger is to be used to cool oil (cp-2200 /kg K) from 150 C to 40°C at a rate of 2 kg/s by water (c 4180J/kg.K) that enters at 22°C at a rate of 1.5 kg/s. The diameter of the tube is 2.5 cm, O and its length is 6 m. Let the water inlet temperature vary from 5°C to 25°C. Identify the graph that depicts the overall heat transfer coefficient as a function of...
Two-pipe concentric concentric) for cooling the engine oil with the help of a water stream in...
Two-pipe concentric concentric) for cooling the engine oil with the help of a water stream in a large diesel engine a reverse (opposite) flow heat exchanger is used. Water at a flow rate of 0.3 kg/h from inside pipe with an inside diameter of 56 mm It flows. The inner pipe is made of stainless steel with a heat transmission coefficient of 16 W/mc and is meat (wall its thickness is 3 mm. Apart from this there is another pipe...
Q4) (10 Marks) From aperformance test on a well-baMed single-she, two-tube-pass heat exchanger, the following data are...
Q4) (10 Marks) From aperformance test on a well-baMed single-she, two-tube-pass heat exchanger, the following data are available: oil (cp 2100 J/kg K) in turbulent flow inside the tubes entered at 340 K at the rate of 1.00 kg/sand left at 310 K: water lowing on the shell side entered at 290 K and lcft at 300 K and (cp water 4187 kg K). A change in service conditions requires the cooling of similar oil from an initial temperature of...
2). A hydrocarbon fluid is to be cooled from 90 to 15 C at a rate...
2). A hydrocarbon fluid is to be cooled from 90 to 15 C at a rate of 9.72 ton per hr. pass shell and tube heat exchanger with the following specification is available A single- Number of tubes 250 1.0 m 23.5 mm 25 mm 15 W m- K-I Tube length Internal tube diameter External tube diameter Thermal conductivity of tube wall Chilled water is supplied at 4C and is normally discharged at 10 C. From experience it is assumed...
Hot stream Aromatic stream 85 40 85.2 Cold stream Cooling water 20 35 Inlet temperature (°C)...
Hot stream Aromatic stream 85 40 85.2 Cold stream Cooling water 20 35 Inlet temperature (°C) Outlet temperature (C) Mass flowrate x heat capacity (KW°C) The fluid properties are as follows Cold stream Cooling water 4193 Hot streanm Heat capacity (Jlkg K) Density (kg/m2) Viscosity (cP) Thermal conductivity (WIm-K) Fouling factor (m2.°C) 2840 750 0.34 0.19 0.00018 1.016 0.594 0.000176 The cooling water is allocated to the tube-side of the exchanger . It is preferable to employ a fixed-tubesheet heat...
An organic liquid is heated from 20°C to 40°C by hot water in a 1:1 pass...
An organic liquid is heated from 20°C to 40°C by hot water in a 1:1 pass shell-and- tube heat exchanger in counter-current flow. The inlet temperature of the water stream is 85oC and flows in the shell side. The organic liquid flows through a bundle of 200 tubes of outside diameter 21 mm with a wall thickness of 2 mm. The flows of the organic liquid and water are 40 kg s and 15 kg s1, respectively (a) Calculate the...
PROBLEM 4 (20 pts) Water at 25 °C is used to cool oil from 120 °C...
PROBLEM 4 (20 pts) Water at 25 °C is used to cool oil from 120 °C to 80 °C. Oil flows at a rate of 1 kg/s in a tube of inside diameter 1.6 cm and outside diameter 1.9 cm. The tube makes 18 passes in a shell. Water flows through the shell at a rate of 1.5 kg/s. The water side heat transfer coefficient is 12,000 W/m2°C. Oil properties at 100 °C are: Cp = 2219J/(kg.), k = 0.137...
2. (25 pts) Nuclear power plants have large amounts of heated water to cool, which may be done in a cooling tower. A sample tower reduces the temperature of warm water from 130 F to 90'F (see fig...
2. (25 pts) Nuclear power plants have large amounts of heated water to cool, which may be done in a cooling tower. A sample tower reduces the temperature of warm water from 130 F to 90'F (see figure at right). Air without water vapor flows into the tower at Wet air 156,900 b/hr 151,000 lb/hr Given that the air removing heat along with some water flows at 156,900 lb/hr, what is the flowrate of the cooled warm water 250,000 lb/hr...
Required information A shell-and-tube heat exchanger is used for cooling 47 kg/s of a process stream flowing through the tubes from 160°C to 136°C. This heat exchanger has a total of 100 identical tubes. each with an inside diameter of 2.5 cm and negligible wall thickness. The average properties of the process stream are: p = 950 kg/m”, k = 0.50 W/mK, Cp=3.5 kJ/kg.K, and -20 mPas The coolant stream is water (cp=4.18 kJ/kg K) at a flow rate of...
A concentric tube heat exchanger for cooling lubricating oil
consists of a thin-walled inner tube of 25 mm diameter carrying
water and an outer tube of 45 mm diameter carrying the oil. The
exchanger operates in countercurrent flow with an overall heat
transfer coefficient of 55 W/m2 K and the tabulated average
properties given below. Mass flow rates of oil and water are both
0.1 kg/s, oil enters the exchanger at 100°C, and water enters the
exchanger at 30°C. (a)...
A thin-walled double-pipe counter-flow heat exchanger is to be used to cool oil (cp-2200 /kg K) from 150 C to 40°C at a rate of 2 kg/s by water (c 4180J/kg.K) that enters at 22°C at a rate of 1.5 kg/s. The diameter of the tube is 2.5 cm, O and its length is 6 m. Let the water inlet temperature vary from 5°C to 25°C. Identify the graph that depicts the overall heat transfer coefficient as a function of...
Two-pipe concentric concentric) for cooling the engine oil with the help of a water stream in a large diesel engine a reverse (opposite) flow heat exchanger is used. Water at a flow rate of 0.3 kg/h from inside pipe with an inside diameter of 56 mm It flows. The inner pipe is made of stainless steel with a heat transmission coefficient of 16 W/mc and is meat (wall its thickness is 3 mm. Apart from this there is another pipe...
Q4) (10 Marks) From aperformance test on a well-baMed single-she, two-tube-pass heat exchanger, the following data are available: oil (cp 2100 J/kg K) in turbulent flow inside the tubes entered at 340 K at the rate of 1.00 kg/sand left at 310 K: water lowing on the shell side entered at 290 K and lcft at 300 K and (cp water 4187 kg K). A change in service conditions requires the cooling of similar oil from an initial temperature of...
2). A hydrocarbon fluid is to be cooled from 90 to 15 C at a rate of 9.72 ton per hr. pass shell and tube heat exchanger with the following specification is available A single- Number of tubes 250 1.0 m 23.5 mm 25 mm 15 W m- K-I Tube length Internal tube diameter External tube diameter Thermal conductivity of tube wall Chilled water is supplied at 4C and is normally discharged at 10 C. From experience it is assumed...
Hot stream Aromatic stream 85 40 85.2 Cold stream Cooling water 20 35 Inlet temperature (°C) Outlet temperature (C) Mass flowrate x heat capacity (KW°C) The fluid properties are as follows Cold stream Cooling water 4193 Hot streanm Heat capacity (Jlkg K) Density (kg/m2) Viscosity (cP) Thermal conductivity (WIm-K) Fouling factor (m2.°C) 2840 750 0.34 0.19 0.00018 1.016 0.594 0.000176 The cooling water is allocated to the tube-side of the exchanger . It is preferable to employ a fixed-tubesheet heat...
An organic liquid is heated from 20°C to 40°C by hot water in a 1:1 pass shell-and- tube heat exchanger in counter-current flow. The inlet temperature of the water stream is 85oC and flows in the shell side. The organic liquid flows through a bundle of 200 tubes of outside diameter 21 mm with a wall thickness of 2 mm. The flows of the organic liquid and water are 40 kg s and 15 kg s1, respectively (a) Calculate the...
PROBLEM 4 (20 pts) Water at 25 °C is used to cool oil from 120 °C to 80 °C. Oil flows at a rate of 1 kg/s in a tube of inside diameter 1.6 cm and outside diameter 1.9 cm. The tube makes 18 passes in a shell. Water flows through the shell at a rate of 1.5 kg/s. The water side heat transfer coefficient is 12,000 W/m2°C. Oil properties at 100 °C are: Cp = 2219J/(kg.), k = 0.137...
2. (25 pts) Nuclear power plants have large amounts of heated water to cool, which may be done in a cooling tower. A sample tower reduces the temperature of warm water from 130 F to 90'F (see figure at right). Air without water vapor flows into the tower at Wet air 156,900 b/hr 151,000 lb/hr Given that the air removing heat along with some water flows at 156,900 lb/hr, what is the flowrate of the cooled warm water 250,000 lb/hr...
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