A 30kW motor is used to drive a fan that has a total head of 98m. If fan efficiency is 60%, what is the maximum capacity of the fan? Select the correct response(s): 17.60 m³ 19.60 m³ 18.60 m³ 15.60 m³
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- A pump draws water from open reservoir A at 20 ft above pump centerline and lifts to an open reservoir B at 280 ft above pump centerline. The loss of head at the suction is 3 times the velocity head at the 6 inches suction pipe and at the discharge is 20 times the velocity head at the 4 inches discharge pipe. The pump discharge is 200 GPM. a. The total dynamic head in ft. 268.32 367.62 288.32 b. The water power in horsepower 31.49 13.54 19.45A turbine is located at an elevation 200 m below that of the surface of the water intake. The friction loss in the pipeline leading to it is 8 m and the turbine efficiency is 90%. What is the power input delivered by the water to the turbine if the flow is 3.0 m^3/s in kW? CHOICES: a.5650.56 b.5690. 45 c.5050.78 d.5085.50A 70mm vane axial fan is running at 2000rpm delivers 7.5 cubic meter/sec of air against static pressure of 8cm water with input power of 12kW. If the fan wheel diameter is increased with the new power input of 18.1 kW, determine: a. the new diameter of the fan in mm 67 74 76 b. the new static head in meter of water 8.4 9.4 10.4 c. the new discharge in cubic meter/sec 8.598 9.198 9.598
- It is required to feed an industrial ventilation system at a rate of Q = 23,000 ft3/min that demands a pressure increase of DP = 350 Pa under normal atmosphere conditions (Patm = 101 kPa and T=20ºC). Estimate the power demand assuming a rotor efficiency of 75%.A turbine is located at an elevation 200 m. below the surface of the water intake. The friction loss in the pipeline leading to it is 8 m and the turbine efficiency is 90%. Compute the input power delivered by the water to the turbine if the flow is 3 m3/s in KW. a.5650.56 b.4576.95 c.192.0a. What is the Static efficiency of the fan if the air flow rate is equal to 3.8 5m /sec, total head of 68.72 m, velocity head of 30.86 m, mechanical efficiency and power are 39.12% and 35.72 KW at 30.69°C, respectively. b. Solve for the area at entrance of the fan blade, if the it has a 346mm diameter, flow of air is equal to 23.328 m/se and flow rate of 3.05 m³ /second.
- A turbine is located at an elevation 200 m below that of the surface of the water intake. The friction loss in the pipeline leading to it is 8 m and the turbine efficiency is 90%. What is the power input delivered by the turbine to the turbine if the flow is 3.0 m^3/s in kW? a.5121.41 b.5690.45 c.5085.50 d.5650.56Water from a reservoir is pumped over a hill through a 450 mm diameter and an absolute pressure of 1.0 kg/cm^2 is maintained at the summit. Water discharge is 30 m above the reservoir. The quantity pumped is 0.5 m^3/s. frictional losses is discharge and suction pipe, and pump is equivalent to 1.5 m. The speed of the pump is 800 rpm. Determine the following: A. Water power of the pump B. New value of discharge if the speed of the pump is increased to 1000 rpm C. New value of head if the speed of the pump is increased to 1000 rpm D.New value of power if the speed of the pump is increased to 1000 rpm2. A rotary pump directly connected to a 5-Hp electric motor operating at full load under following conditions: a. Fluid Handled : 40 0API Oil b. Temperature : 210C c. Specific Gravity: 0.85 d. Volume Flow Rate : 20 lit/sec e. Total Head : 175 kPa Determine : i. Hydraulic Horsepower ii. Mechanical Efficiency
- In a 3.5 MW hydroelectric power plant, the elevation of the headwater is 2100 m and that of a tailwater is 180 m. Penstock diameter is 750 mm. The water is flowing at a velocity of 5 m/s, and the total head loss is 15% of the gross head. The impulse turbine nozzle is 3.0 m above tailwater level. Penstock length is 1220 m, electrical efficiency is 95%. Calculate mechanical efficiency (%).1) Interpret solar power in the context of environmental impact.2. What is the rigid dichotomy between windmill and diesel-driven pumps?3. For a normal windmill-driven pump at 3 m/s wind speed, the yield at a 10 m Head is typically 0.12 liters/s per m2 of rotor area, value windmills in the context of yield.a. Given the static head of 28.91 m, and static pressure head of 3.15 cm WC. What is the normal pressure, Pn? b. What is the Static efficiency of the fan if the air flow rate is equal to 3.8 5m /sec, total head of 68.72 m, velocity head of 30.86 m, mechanical efficiency and power are 39.12% and 35.72 KW at 30.69°C, respectively. c. Solve for the area at entrance of the fan blade, if the it has a 346mm diameter, flow of air is equal to 23.328 m/se and flow rate of 3.05 m³ /second.