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4. Liquid water at 100°F and 200 gal/min volumetric flow rate enters a cooling tower operating...
Problem -4 (200) In the condenser of a power plant, energy is discharged by heat transfer...
Problem -4 (200) In the condenser of a power plant, energy is discharged by heat transfer at a rate of 853035 Btu/s to cooling water that exits the condenser at 110°F into a cooling tower. Cooled water at 64°F is returned to the condenser. Atmospheric air enters the tower at 80°F, 1 atm, 30% relative humidity. Moist air exits at 98°F, 1 atm, 95% relative humidity. Makeup water is supplied at 64°F. For operation at steady state, determine (a) Draw...
Mass Flow Rate Problem
Water exiting the condenser of a power plant at 38ºC enters a cooling tower with a massflow rate of 4.5 x 107 kg/h. A stream of cooled water is returned to the condenser from acooling tower with a temperature of 30ºC and the same flow rate. Makeup water is addedin a separate stream at 20ºC. Atmospheric air enters the cooling tower at 25ºC and 35%relative humidity. Moist air exits the tower at 30ºC and 95% relative humidity.Determine the mass flow...
Water entering a wet cooling tower at 35°C at a rate of 100 kg/s is cooled to 22°C in the cooling tower by air that enters the tower at 1 atm, 20°C, and 60% relative humidity and leaves saturated at 3...
Water entering a wet cooling tower at 35°C at a rate of 100 kg/s
is cooled to 22°C in the cooling tower by air that enters the tower
at 1 atm, 20°C, and 60% relative humidity and leaves saturated at
30°C. The makeup water of 22°C is supplied to the outlet to make
the mass flow rate of the cool water the same as that at the inlet,
see Figure Q5.
Q.5Water entering a wet cooling tower at 35°C at...
Air at 95°F, 1 atm, and 10% relative humidity enters an evaporative cooler operating at steady...
Air at 95°F, 1 atm, and 10% relative humidity enters an evaporative cooler operating at steady state. The volumetric flow rate of the incoming air is 895 ft3/min. Liquid water at 68°F enters the cooler and fully evaporates. Moist air exits the cooler at 70°F, 1 atm. There is no significant heat transfer between the device and its surroundings and kinetic and potential energy effects can be neglected. a)Determine the mass flow rate of the dry air in lb(dry air)/min....
4 AAA 4 An 11111111111 water from condenser - =6000 gal/hr Ten=95°F water to condenser +...
4 AAA 4 An 11111111111 water from condenser - =6000 gal/hr Ten=95°F water to condenser + air Tamb= 74°F Pamb=0.5 Ve=10,000 cfm makeup water T = 80°F Figure 1: Cooling tower. The cooling tower is designed to cool water from the condenser of a large air conditioning system that enters with a flow rate V =6,000 gallons per hour with temperature Twin = 95°F. Outdoor air at Tamb = 74°F and Pamb = 50% relative humidity is forced through the...
need an answer for this question, please. thanks. An existing packed countercurrent water-cooling tower was designed...
need an answer for this question, please. thanks.
An existing packed countercurrent water-cooling tower was designed to cool water from 107.6 degree F to 82.4 degree F. The air enters at 82.4 degree F with a wet bulb temperature of 72.5 degree F. The water flow rate is 1900 lb_m water/h.ft^2 and the gas flowrate is 1450 lb_m dry air/h.ft^2. The tower operates at a pressure of 1 atm. Given the overall mass-transfer coefficient (K_ca) is 6.75 lb mol/h.ft^3. Determine...
Air at 95°F, 1 atm, and 10% relative humidity enters an evaporative cooler operating at steady...
Air at 95°F, 1 atm, and 10% relative humidity enters an evaporative cooler operating at steady state. The volumetric flow rate of the incoming air is 1765 ft3/min. Liquid water at 68°F enters the cooler and fully evaporates. Moist air exits the cooler at 70°F, 1 atm. There is no significant heat transfer between the device and its surroundings and kinetic and potential energy effects can be neglected. A. Determine the mass flow rate of the dry air in lbm(dry...
4) 15% Air psychometric chart). enters and exits an air conditioner with the properties shown below...
4) 15% Air psychometric chart). enters and exits an air conditioner with the properties shown below (as determined from the Cooling cols Air Condensate Property Estering Exiting | 2S Dry bulb temperature CC)-35 ℃ Wet bulb temperature ("C1-20℃ Eethalpy (h, kJ/kg dry air)$7.5 40.9 Absolute humidity (o, kg H-O/kg dry air) 0.0085 0 0062 0.882 Specific volume (m/kg)1 0.8850 The condensate leaves volume flow rate of the air returned to the workspace is 800 m3/min. Atmospheric pressure is 9 the...
a. Calculate the dry air and water vapor mass flow rates (lb/min) if the volume flow...
a. Calculate the dry air and water vapor mass flow rates (lb/min) if the volume flow rate is 1,000 cfm, the humidity ratio is 0.025 lbv/lba, and the dry air density is 0.072 Iba/ft3. b. Assume the above air enters an evaporator coil at 90°F where it is cooled in a constant humidity ratio process until reaching the 100 % RH curve ( the temperature at that point is the dew point. The air then keeps dropping in temperature, following...
Air at 95°F, 1 atm, and 10% relative humidity enters an evaporative cooler operating at steady...
Air at 95°F, 1 atm, and 10% relative humidity enters an evaporative cooler operating at steady state. The volumetric flow rate of the incoming air is 1765 ft3/min. Liquid water at 68°F enters the cooler and fully evaporates. Moist air exits the cooler at 70°F, 1 atm. There is no significant heat transfer between the device and its surroundings and kinetic and potential energy effects can be neglected. A. Determine the mass flow rate of the dry air in Ibm(dry...
Problem -4 (200) In the condenser of a power plant, energy is discharged by heat transfer at a rate of 853035 Btu/s to cooling water that exits the condenser at 110°F into a cooling tower. Cooled water at 64°F is returned to the condenser. Atmospheric air enters the tower at 80°F, 1 atm, 30% relative humidity. Moist air exits at 98°F, 1 atm, 95% relative humidity. Makeup water is supplied at 64°F. For operation at steady state, determine (a) Draw...
Water entering a wet cooling tower at 35°C at a rate of 100 kg/s
is cooled to 22°C in the cooling tower by air that enters the tower
at 1 atm, 20°C, and 60% relative humidity and leaves saturated at
30°C. The makeup water of 22°C is supplied to the outlet to make
the mass flow rate of the cool water the same as that at the inlet,
see Figure Q5.
Q.5Water entering a wet cooling tower at 35°C at...
4 AAA 4 An 11111111111 water from condenser - =6000 gal/hr Ten=95°F water to condenser + air Tamb= 74°F Pamb=0.5 Ve=10,000 cfm makeup water T = 80°F Figure 1: Cooling tower. The cooling tower is designed to cool water from the condenser of a large air conditioning system that enters with a flow rate V =6,000 gallons per hour with temperature Twin = 95°F. Outdoor air at Tamb = 74°F and Pamb = 50% relative humidity is forced through the...
need an answer for this question, please. thanks.
An existing packed countercurrent water-cooling tower was designed to cool water from 107.6 degree F to 82.4 degree F. The air enters at 82.4 degree F with a wet bulb temperature of 72.5 degree F. The water flow rate is 1900 lb_m water/h.ft^2 and the gas flowrate is 1450 lb_m dry air/h.ft^2. The tower operates at a pressure of 1 atm. Given the overall mass-transfer coefficient (K_ca) is 6.75 lb mol/h.ft^3. Determine...
Air at 95°F, 1 atm, and 10% relative humidity enters an evaporative cooler operating at steady state. The volumetric flow rate of the incoming air is 1765 ft3/min. Liquid water at 68°F enters the cooler and fully evaporates. Moist air exits the cooler at 70°F, 1 atm. There is no significant heat transfer between the device and its surroundings and kinetic and potential energy effects can be neglected. A. Determine the mass flow rate of the dry air in lbm(dry...
4) 15% Air psychometric chart). enters and exits an air conditioner with the properties shown below (as determined from the Cooling cols Air Condensate Property Estering Exiting | 2S Dry bulb temperature CC)-35 ℃ Wet bulb temperature ("C1-20℃ Eethalpy (h, kJ/kg dry air)$7.5 40.9 Absolute humidity (o, kg H-O/kg dry air) 0.0085 0 0062 0.882 Specific volume (m/kg)1 0.8850 The condensate leaves volume flow rate of the air returned to the workspace is 800 m3/min. Atmospheric pressure is 9 the...
a. Calculate the dry air and water vapor mass flow rates (lb/min) if the volume flow rate is 1,000 cfm, the humidity ratio is 0.025 lbv/lba, and the dry air density is 0.072 Iba/ft3. b. Assume the above air enters an evaporator coil at 90°F where it is cooled in a constant humidity ratio process until reaching the 100 % RH curve ( the temperature at that point is the dew point. The air then keeps dropping in temperature, following...
Air at 95°F, 1 atm, and 10% relative humidity enters an evaporative cooler operating at steady state. The volumetric flow rate of the incoming air is 1765 ft3/min. Liquid water at 68°F enters the cooler and fully evaporates. Moist air exits the cooler at 70°F, 1 atm. There is no significant heat transfer between the device and its surroundings and kinetic and potential energy effects can be neglected. A. Determine the mass flow rate of the dry air in Ibm(dry...
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