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fan cooling a computer system has an operating point at 100Pa pressure drop, 120CFM airflow rate,...
Consider a centrifugal fan connected to a duct system in an HVAC installation. The intended air...
Consider a centrifugal fan connected to a duct system in an HVAC installation. The intended air flow is 6,000 L/s (6.0 m/s). The fan is driven by a belt-drive and motor. The efficiency of the motor is approximately constant at 91%, and the combined-efficiency of the drive and motor is approximately constant at 87%. fan air filter After the fan is initially installed, it is operated at fan-shaft speed = 1150 rpm. The measured air flow is 6,400 L/s and...
Measurements made on a newly installed air-handling system were: 20 rev/s fan speed, 2.4 m³/s airflow...
Measurements made on a newly installed air-handling system were: 20 rev/s fan speed, 2.4 m³/s airflow rate, 340 Pa fan discharge pressure, and 1.8 kw supplied to the motor. These measurements were made with an air temperature of 20°C, and the system is eventually to operate with air at a temperature of 40°C. If the fan speed remains at 20 rev/s, determine the operating values of:
For the following circuit; if: The pressure drop from point A to B is 9 psi,...
For the following circuit; if: The pressure drop from point A to B is 9 psi, The pressure drop from point C to D is 10 psi, The pressure drop from point D to E is 72 psi, And the pressure drop from E to F is 120 psi What is the Temperature Rate of Rise for the oil in the reservoir, if the reservoir contains 15 gallons of fluid, the pump flow is 15 GPM, the fluid has a...
A water pump has been operating at a pump station at speed 1000 rpm. The pipeline...
A water pump has been operating at a pump station at speed 1000 rpm. The pipeline system characteristics at the station are as follows. Head loss in pipeline: 80 1 Discharge (LS) 0 20 40 60 Head (m) 4 10 20 The static head is 20 m. The pump characteristics at speed 1000 rpm are provided by the manufacturer and given as follows. Discharge (IS) 0 20 40 50 60 Head (m) 50 45 14 Efficiency (%) 60 69 60...
Nguyen Inc. is considering the purchase of a new computer system (ICX) for $180,000. The system...
Nguyen Inc. is considering the purchase of a new computer system (ICX) for $180,000. The system will require an additional $40,000 for installation. If the new computer is purchased it will replace an old system that has been fully depreciated. The new system will be depreciated over a period of 8 years using straight-line depreciation. If the ICX is purchased, the old system will be sold for $10,000. The ICX system, which has a useful life of 8 years, is...
Nguyen Inc. is considering the purchase of a new computer system (ICX) for $180,000. The system...
Nguyen Inc. is considering the purchase of a new computer system (ICX) for $180,000. The system will require an additional $20,000 for installation. If the new computer is purchased it will replace an old system that has been fully depreciated. The new system will be depreciated over a period of 10 years using straight-line depreciation. If the ICX is purchased, the old system will be sold for $20,000. The ICX system, which has a useful life of 10 years, is...
At an ocean-side nuclear power plant, seawater is used as part of the cooling system. This...
At an ocean-side nuclear power plant, seawater is used as part of the cooling system. This raises the temperature of the water that is discharged back into the ocean. The amount that the water temperature is raised has a uniform distribution over the interval from 10 to 25�C. (a) What is the probability that the temperature increase will be (1) less than 20 degrees C? (2) between 20 and 22C?(b) Suppose that a temperature increase of more than 18 degrees...
2 A cooling loop for hydraulic fuid (MIL-M-5606) consists of A heat exchanger whose carve of pres...
2 A cooling loop for hydraulic fuid (MIL-M-5606) consists of A heat exchanger whose carve of pressare drop versus flow rate is gives in Fig. P4-2(4). 150 ft of 3-in. schedule 80 pipe +4 standard elbows abead of the exchanger 150 ft of 3-in. schedule 80 pipe + 4 standard elbows aftor the exchanger 1 gate valve The fluid enters the exchanger at 200 P and leaves at 80"F. The loop leaves and enters the machine at the same level....
65. The pressure drop along a length of artery is 100 Pa, the radius is 10 mm, and the flow is laminar. The aver...
65. The pressure drop along a length of artery is 100 Pa, the radius is 10 mm, and the flow is laminar. The average speed of the blood is 15 mm/s. (a) What is the net force on the blood in this section of artery? (b) What is the power expended maintaining the flow? 66. A small artery has a length of and a radius of . If the pressure drop across the artery'is 1.3 kPa, what's the flow rate...
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...
Consider a centrifugal fan connected to a duct system in an HVAC installation. The intended air flow is 6,000 L/s (6.0 m/s). The fan is driven by a belt-drive and motor. The efficiency of the motor is approximately constant at 91%, and the combined-efficiency of the drive and motor is approximately constant at 87%. fan air filter After the fan is initially installed, it is operated at fan-shaft speed = 1150 rpm. The measured air flow is 6,400 L/s and...
For the following circuit; if: The pressure drop from point A to B is 9 psi, The pressure drop from point C to D is 10 psi, The pressure drop from point D to E is 72 psi, And the pressure drop from E to F is 120 psi What is the Temperature Rate of Rise for the oil in the reservoir, if the reservoir contains 15 gallons of fluid, the pump flow is 15 GPM, the fluid has a...
A water pump has been operating at a pump station at speed 1000 rpm. The pipeline system characteristics at the station are as follows. Head loss in pipeline: 80 1 Discharge (LS) 0 20 40 60 Head (m) 4 10 20 The static head is 20 m. The pump characteristics at speed 1000 rpm are provided by the manufacturer and given as follows. Discharge (IS) 0 20 40 50 60 Head (m) 50 45 14 Efficiency (%) 60 69 60...
2 A cooling loop for hydraulic fuid (MIL-M-5606) consists of A heat exchanger whose carve of pressare drop versus flow rate is gives in Fig. P4-2(4). 150 ft of 3-in. schedule 80 pipe +4 standard elbows abead of the exchanger 150 ft of 3-in. schedule 80 pipe + 4 standard elbows aftor the exchanger 1 gate valve The fluid enters the exchanger at 200 P and leaves at 80"F. The loop leaves and enters the machine at the same level....
65. The pressure drop along a length of artery is 100 Pa, the radius is 10 mm, and the flow is laminar. The average speed of the blood is 15 mm/s. (a) What is the net force on the blood in this section of artery? (b) What is the power expended maintaining the flow? 66. A small artery has a length of and a radius of . If the pressure drop across the artery'is 1.3 kPa, what's the flow rate...
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...
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