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10.6 A quantity of 55 cubic meters of water passes through a heat exchanger and absorbs...
D Question 1 1 pts An adiabatic heat exchanger is used to heat cold water at...
D Question 1 1 pts An adiabatic heat exchanger is used to heat cold water at 12 °C entering at a rate of 4 kg/s by hot water entering at 95°C at rate of 2.5 kg/s. The specific heat of water is C_w 4.18 kJ/kg- C. If the exit temperature of hot water is 50 °C, the exit temperature of cold water is O 50 °C 90 °C 95 °C 57 °C 40 °C
d. Answer is not among the choices 24. *A heat exchanger is used to heat cold...
d. Answer is not among the choices 24. *A heat exchanger is used to heat cold water at 15°C entering at a rate of 2 kg/s by a hot air at 100°C entering at a rate of 3 kg/s. The heat exchanger is losing heat at a heat rate of 40 kJ/s. If the exit temperature of hot air is 20°C, the exit temperature of the cold water is °C. Neglect changes in potential and kinetic energies. 39 49 b....
A heat exchanger is used to heat cold water at 8C entering at a rate of...
A heat exchanger is used to heat cold water at 8C entering at a rate of 1.2 kg/s by hot air at 90 C entering at rate of 2.5 kg/s. The heat exchanger is not insulated, and is loosing heat at a rate of 28 kJ/s. If the exit temperature of hot air is 20 C, the exit temperature of cold water is
Sulfur dioxide flows through a heat exchanger at 45 moles/hr. The inlet to the isobaric heat...
Sulfur dioxide flows through a heat exchanger at 45 moles/hr. The inlet to the isobaric heat exchanger is 100°C and 1bar and the heat rate is 1,300 kJ/hr. Assume an ideal gas with a Cp 0.05791T with T in K. mol K a. b. c. Determine the exit temperature for this heat exchanger. Determine the total rate change of entropy of the exit to inlet to the heat exchanger? Is the process of increasing SO2 temperature reversible? Prove with the...
The "combustor" noted in the sketch below is modeled as a heat exchanger that adds heat...
The "combustor" noted in the sketch below is modeled as a heat exchanger that adds heat to the air as it passes through the exchanger. The necessary properties and dimensions are shown on the sketch. Note that point 2 at the exit of the combustor is also the entrance to the nozzle. Consider that the specific heat of the air can vary with temperature and do the following: 2. a) List assumptions required when dealing with the combustor and the...
Determine the effectiveness of the concentric tube heat exchanger. The working fluid through the heat exchanger...
Determine the effectiveness of the concentric tube heat exchanger. The working fluid through the heat exchanger is water and is flowing at 1 m/min for both cold and hot pipes. The hot water temperature at the tube inlet is 90°C and the temperature at the tube outlet is 60°C. The cold water temperature at the tube inlet is 50°C and the temperature at the tube outlet is 80°C. Assume the density and the specific heat of water are 988.1 kg/m3...
Thermodynamics A heat exchanger is to heat water (cp = 4.18 kJ/kg.C) from 25 C to...
Thermodynamics A heat exchanger is to heat water (cp = 4.18 kJ/kg.C) from 25 C to 60 C at a rate of 0.2 kg/s. The heating is to be accomplished by geothermal water (cp = 4.31 kJ/kg.C) available at 140 C at a mass flow rate of 0.3 kg/s. The inner tube is thin walled and has a diameter of 0.8 cm. Determine the rate of heat transfer in the heat exchanger and the exit temperature of geothermal water.
2. (35 points) A feedwater heater uses a shell-and-tube type heat exchanger with condensing steam in...
2. (35 points) A feedwater heater uses a shell-and-tube type heat exchanger with condensing steam in one shell pass at constant 130 °C. Water enters the tube at 25 °C and make four passes to produce an overall heat transfer coefficient, U value of 1,800 W/m2°C. Calculate the area of the heat exchanger for 2.4 kg/s mass flow of the water, with a water exit temperature of 95 °C. Here, the specific heat at Tm 60 °C is 4185 J/kg.°C.
The heat exchanger in a heat lung machine is constructed so that blood flows through an...
The heat exchanger in a heat lung machine is constructed so
that blood flows through an array of tubes controlled temperature
water circulated through an outer exterior shell.
e heat exchanger in a heat lung machine is constructed so that blood flows through an array of tubes with controlled temperature water circulated through an outer exterior shell. Although the temperature of the blood varies as it passed through the heat exchanger, during the cool down cycle when a patient is...
6 Problem 4 (25%) A 2-shell passes and 4-tube passes heat exchanger is used to heat...
6 Problem 4 (25%) A 2-shell passes and 4-tube passes heat exchanger is used to heat glycerin (Cp.gly = 2447) entering at 15 °C by hot water (Cp water = 4180 f.), which enters at 90°C. The thin-walled inner tube has a 4 cm diameter and a total length of 15 m. The hot water flows through the tube at a total rate of 0.265 kg/s, and the glycerin through the shell at a rate of 0.6 kg/s. The convection...
D Question 1 1 pts An adiabatic heat exchanger is used to heat cold water at 12 °C entering at a rate of 4 kg/s by hot water entering at 95°C at rate of 2.5 kg/s. The specific heat of water is C_w 4.18 kJ/kg- C. If the exit temperature of hot water is 50 °C, the exit temperature of cold water is O 50 °C 90 °C 95 °C 57 °C 40 °C
d. Answer is not among the choices 24. *A heat exchanger is used to heat cold water at 15°C entering at a rate of 2 kg/s by a hot air at 100°C entering at a rate of 3 kg/s. The heat exchanger is losing heat at a heat rate of 40 kJ/s. If the exit temperature of hot air is 20°C, the exit temperature of the cold water is °C. Neglect changes in potential and kinetic energies. 39 49 b....
Sulfur dioxide flows through a heat exchanger at 45 moles/hr. The inlet to the isobaric heat exchanger is 100°C and 1bar and the heat rate is 1,300 kJ/hr. Assume an ideal gas with a Cp 0.05791T with T in K. mol K a. b. c. Determine the exit temperature for this heat exchanger. Determine the total rate change of entropy of the exit to inlet to the heat exchanger? Is the process of increasing SO2 temperature reversible? Prove with the...
The "combustor" noted in the sketch below is modeled as a heat exchanger that adds heat to the air as it passes through the exchanger. The necessary properties and dimensions are shown on the sketch. Note that point 2 at the exit of the combustor is also the entrance to the nozzle. Consider that the specific heat of the air can vary with temperature and do the following: 2. a) List assumptions required when dealing with the combustor and the...
Determine the effectiveness of the concentric tube heat exchanger. The working fluid through the heat exchanger is water and is flowing at 1 m/min for both cold and hot pipes. The hot water temperature at the tube inlet is 90°C and the temperature at the tube outlet is 60°C. The cold water temperature at the tube inlet is 50°C and the temperature at the tube outlet is 80°C. Assume the density and the specific heat of water are 988.1 kg/m3...
2. (35 points) A feedwater heater uses a shell-and-tube type heat exchanger with condensing steam in one shell pass at constant 130 °C. Water enters the tube at 25 °C and make four passes to produce an overall heat transfer coefficient, U value of 1,800 W/m2°C. Calculate the area of the heat exchanger for 2.4 kg/s mass flow of the water, with a water exit temperature of 95 °C. Here, the specific heat at Tm 60 °C is 4185 J/kg.°C.
The heat exchanger in a heat lung machine is constructed so
that blood flows through an array of tubes controlled temperature
water circulated through an outer exterior shell.
e heat exchanger in a heat lung machine is constructed so that blood flows through an array of tubes with controlled temperature water circulated through an outer exterior shell. Although the temperature of the blood varies as it passed through the heat exchanger, during the cool down cycle when a patient is...
6 Problem 4 (25%) A 2-shell passes and 4-tube passes heat exchanger is used to heat glycerin (Cp.gly = 2447) entering at 15 °C by hot water (Cp water = 4180 f.), which enters at 90°C. The thin-walled inner tube has a 4 cm diameter and a total length of 15 m. The hot water flows through the tube at a total rate of 0.265 kg/s, and the glycerin through the shell at a rate of 0.6 kg/s. The convection...
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