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العداله که درجات A processfuld having a specific heat of 3500 kg and flowing at 2...
(b) Exhaust gases flowing through a tubular heat exchanger at the rate of 0.3 kg/s are cooled from 400 to 120°C by w...
(b) Exhaust gases flowing through a tubular heat exchanger at the rate of 0.3 kg/s are cooled from 400 to 120°C by water initially at 10°C. The specific heat capacity of the exhaust gases and water may be taken as 1.13 and 4.19 kJ/kg°C, respectively, and the overall heat transfer coefficient from gases to water is 140 W/m2°C. Calculate the surface area required when the water flow rate is 0.4 kg/s for (6 marks) (4 marks) (i) (ii) Parallel flow...
Please use the NTU method. I am having trouble. 2. A cross-flow heat exchanger with surface...
Please use the NTU method. I am having trouble.
2. A cross-flow heat exchanger with surface area A, , is desd with inlet conditions The = 350°C and T,,i = 20°C, and outlet condition Te,o-14°C. If hot air with miass flow mh = 2.2 -g is used to heat pressurized water flowing at mc = 0.6 kg, what is the overall heat transfer coefficient of the exchanger? The water remains in the liquid state and evaluate thermal properties of the...
Help me!!!! Q2. Heat exchanger-NTU method (34 pt). An orange juice is being cooled from 85...
Help me!!!!
Q2. Heat exchanger-NTU method (34 pt). An orange juice is being cooled from 85 °C at a rate of 2000 kg/h in a counter-current heat exchanger by cold water. The juice has a specific heat of 3090 J/(kg.K). The cold water enters the heat exchanger at 8°C at a rate of 2950 kg/h、The overall heat transfer coefficient U-485 w/mK and the area A 4.2 m2. Assuming steady-state conditions, calculate: (a) the heat transfer rate (J/s), (b) the exit...
1) 2.5 m3/s of air at 150°C is used to heat 0.342 kg/s of 20°C water....
1) 2.5 m3/s of air at 150°C is used to heat 0.342 kg/s of 20°C water. The heat exchanger is a finned-tube cross flow heat exchanger with both sides unmixed. The overall heat transfer coefficient associated with the hot side is 120 W/(m2°C). The hot-side area is 20 m2. Assume a constant specific heat for air and water of Crezia = 1.005 kJ/(kgº), Crewater = 4.2 kJ/(kg °C). The pressure of the hot air is P = 1.0 atm. The...
2) Hot air enters a heat exchanger at 350°C and exits at 153°C. The heat extracted...
2) Hot air enters a heat exchanger at 350°C and exits at 153°C. The heat extracted is used to boil 0.277 kg/s of 100°C water (from saturated liquid to saturated steam). The heat exchanger is a single-shell shell-and-tube heat exchanger with two tube passes. The overall heat transfer coefficient for the hot side is 240 W/(m2). Assume a constant specific heat for air of cp = 1.005 kJ/(kg°C). The pressure of the hot air and the boiling water is P...
1) 2.5 m/s of air at 150°C is used to heat 0.35 kg/s of 20°C water....
1) 2.5 m/s of air at 150°C is used to heat 0.35 kg/s of 20°C water. The heat exchanger is a finned-tube cross flow heat exchanger with both sides unmixed. The overall heat transfer coefficient associated with the hot side is 120 W/(m2 °C). The hot-side area is 20 m². Assume a constant specific heat for air and water of Gezic = 1.005 kJ/(kg °C), Senator = 4.2 kJ/(kg °C). The pressure of the hot air is P = 1.0...
Hot air enters a heat exchanger at 350°C and exits at (149°C. The heat extracted is...
Hot air enters a heat exchanger at 350°C and exits at (149°C. The heat extracted is used to boil (0.263) kg/s of 100°C water (from saturated liquid to saturated steam). The heat exchanger is a single-shell shell-and-tube heat exchanger with two tube passes. The overall heat transfer coefficient for the hot side is 240 W/(m2°C). Assume a constant specific heat for air of Cp = 1.005 kJ/(kgC). The pressure of the hot air and the boiling water is P =...
Heat transfer 1) 2.5 m/s of air at 150°C is used to heat (0.25 + /250)=0.254...
Heat transfer
1) 2.5 m/s of air at 150°C is used to heat (0.25 + /250)=0.254 kg/s of 20°C water. The heat exchanger is a finned-tube cross flow heat exchanger with both sides unmixed. The overall heat transfer coefficient associated with the hot side is 120 W/(m2 °C). The hot-side area is 20 m². Assume a constant specific heat for air and water of Cecair = 1.005 kJ/(kg °C), Crewater = 4.2 kJ/(kg). The pressure of the hot air is...
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...
A cross-flow heat exchanger used in a cardiopulmonary bypass procedure cools blood flowing at 4 L/min...
A cross-flow heat exchanger used in a cardiopulmonary bypass procedure cools blood flowing at 4 L/min from a body temperature of 37°C to 25°C in order to induce body hypothermia, which reduces metabolic and oxygen requirements. The coolant is ice water at 0°C, and its flow rate is adjusted to provide an outlet temperature of 13°C. The heat exchanger operates with the blood flow unmixed and the water flow mixed, and the overall heat transfer coefficient is 750 W/m2.K. The...
(b) Exhaust gases flowing through a tubular heat exchanger at the rate of 0.3 kg/s are cooled from 400 to 120°C by water initially at 10°C. The specific heat capacity of the exhaust gases and water may be taken as 1.13 and 4.19 kJ/kg°C, respectively, and the overall heat transfer coefficient from gases to water is 140 W/m2°C. Calculate the surface area required when the water flow rate is 0.4 kg/s for (6 marks) (4 marks) (i) (ii) Parallel flow...
Please use the NTU method. I am having trouble.
2. A cross-flow heat exchanger with surface area A, , is desd with inlet conditions The = 350°C and T,,i = 20°C, and outlet condition Te,o-14°C. If hot air with miass flow mh = 2.2 -g is used to heat pressurized water flowing at mc = 0.6 kg, what is the overall heat transfer coefficient of the exchanger? The water remains in the liquid state and evaluate thermal properties of the...
Help me!!!!
Q2. Heat exchanger-NTU method (34 pt). An orange juice is being cooled from 85 °C at a rate of 2000 kg/h in a counter-current heat exchanger by cold water. The juice has a specific heat of 3090 J/(kg.K). The cold water enters the heat exchanger at 8°C at a rate of 2950 kg/h、The overall heat transfer coefficient U-485 w/mK and the area A 4.2 m2. Assuming steady-state conditions, calculate: (a) the heat transfer rate (J/s), (b) the exit...
1) 2.5 m3/s of air at 150°C is used to heat 0.342 kg/s of 20°C water. The heat exchanger is a finned-tube cross flow heat exchanger with both sides unmixed. The overall heat transfer coefficient associated with the hot side is 120 W/(m2°C). The hot-side area is 20 m2. Assume a constant specific heat for air and water of Crezia = 1.005 kJ/(kgº), Crewater = 4.2 kJ/(kg °C). The pressure of the hot air is P = 1.0 atm. The...
2) Hot air enters a heat exchanger at 350°C and exits at 153°C. The heat extracted is used to boil 0.277 kg/s of 100°C water (from saturated liquid to saturated steam). The heat exchanger is a single-shell shell-and-tube heat exchanger with two tube passes. The overall heat transfer coefficient for the hot side is 240 W/(m2). Assume a constant specific heat for air of cp = 1.005 kJ/(kg°C). The pressure of the hot air and the boiling water is P...
1) 2.5 m/s of air at 150°C is used to heat 0.35 kg/s of 20°C water. The heat exchanger is a finned-tube cross flow heat exchanger with both sides unmixed. The overall heat transfer coefficient associated with the hot side is 120 W/(m2 °C). The hot-side area is 20 m². Assume a constant specific heat for air and water of Gezic = 1.005 kJ/(kg °C), Senator = 4.2 kJ/(kg °C). The pressure of the hot air is P = 1.0...
Hot air enters a heat exchanger at 350°C and exits at (149°C. The heat extracted is used to boil (0.263) kg/s of 100°C water (from saturated liquid to saturated steam). The heat exchanger is a single-shell shell-and-tube heat exchanger with two tube passes. The overall heat transfer coefficient for the hot side is 240 W/(m2°C). Assume a constant specific heat for air of Cp = 1.005 kJ/(kgC). The pressure of the hot air and the boiling water is P =...
Heat transfer
1) 2.5 m/s of air at 150°C is used to heat (0.25 + /250)=0.254 kg/s of 20°C water. The heat exchanger is a finned-tube cross flow heat exchanger with both sides unmixed. The overall heat transfer coefficient associated with the hot side is 120 W/(m2 °C). The hot-side area is 20 m². Assume a constant specific heat for air and water of Cecair = 1.005 kJ/(kg °C), Crewater = 4.2 kJ/(kg). The pressure of the hot air is...
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...
A cross-flow heat exchanger used in a cardiopulmonary bypass procedure cools blood flowing at 4 L/min from a body temperature of 37°C to 25°C in order to induce body hypothermia, which reduces metabolic and oxygen requirements. The coolant is ice water at 0°C, and its flow rate is adjusted to provide an outlet temperature of 13°C. The heat exchanger operates with the blood flow unmixed and the water flow mixed, and the overall heat transfer coefficient is 750 W/m2.K. The...
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