Explain the relationship (with an aid of a graph or illustration) between the airflow rate and the pressure of an air system
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Explain the relationship (with an aid of a graph or illustration) between the airflow rate and the pressure of an air system.
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- If Reynolds number relate the inertial and viscous forces, which of the following relates the inertial andgravitational forces?A. Froude NumberB. Weber NumberC. Galileo NumberD. Eotvos NumberQuestion 1 Select the correct answer regarding Fans in power plants O a. The rotational speed is an important parameter for fan similarities O b. Only centrifugal fans are used in Boilers O c. Friction losses can always be neglected when selecting a fan Od. The major losses are always greater than the minor losses in fan ducting systems Moving to the next question prevents changes to this answer.ducts are made in circular, rectangular or square shapes. From [air movement, economical, low pressure duct, high velocity, 2. In HVAC-direct expansion system, the central package is divided to [floor and ceiling. floor and roof standing, roof top and vertical, 3. ------- fair vapor pressure, is load from outdoor surrounding. appliances, miscellaneous sources, metabolism, - none of any one] 4. The magnitude of time lag depends on the materials used to construct the particular wall or roof, and on their capacity to [space load, condition space, ambient conditions, store heat, none of any one] 5. If the cooling load 5 Ton, outdoor temperature in the catalogue temperature = 48 °C, the actual cooling load equal - [50000 BTU/hr, 55000 BTU/hr, 72000 BTU/hr, 27000 BTU/hr, …………. -point of view. none of any one] - VRF and CCD] 40 °C, actual outdoor none of any one]
- I need detailed explanations with at least 2 figures of the Centrifugal force on wind turbinesExperiment Data Take the following data for the syringe injection pump Inner diameter of syringe barrel: D = 1.5 cm Inner diameter of the needle shaft of the syringe: d = 0.5 mm The thread pitch of lead screw: pt 0.75 mm Lead screw rotation velocity (rpm): n Calculations Liquid injection rate (cm /hr) Q = pt *n * 60 * n * D²/4 Velocity of liquid in syringe barrel (cm/min) v = 4Q/ (60 * T * D?) %3D Velocity of liquid in syringe needle (cm/min) vn = 4Q/ (60 * n * d?) %3D Find the rotation velocity of lead screw n and the velocity of liquid in syringe needle if the required injection dose is 1. 10 cm3 in 3 hours (continuous injection) 2. 20 cm3 in 12 hours (discontinuous injection, 5 cm³each 3 hour, injection time = 1 min). Discus the results briefly.Describe the concepts of independent, dependent, and extraneous variables using the illustration of a pressure measurement system.
- Your company is setting up an experiment that involves the measurement of airflow rate in a duct and you have to come up with proper instrumentation. Research the available techniques and devices for air flow rate measurement, discuss the advantages and disadvantages of each technique and make a recommendation.Explain in your own word the Components and Flows in Water Systems.For the following pump-pipe system below, how will the discharge and pump head change if a smaller pump in the same family is used to replace the current pump? Increase or decrease? EB EA Head (ft) 350 300 250 225 200 150 100 50 0 0 5 10 O Pump head will decrease; discharge will decrease. O Pump head will increase; discharge will increase. O Pump head will increase; discharge will increase. O Pump head will decrease; discharge will increase. 15 20 Discharge (cfs) System head curve 25 H₂ -Intersection point Pump characteristics 30 35 40
- A probe with an improvement coefficient of 0.88 will measure the temperature in an ideal gas flow with a speed of 95 m/s. Since the gas constant of the liquid is 0.288 kJ/kgK and its isanthropic base is 1.4, how many ºC is the difference between the temperature that the probe will show and the actual temperature of the liquid? a. 2.317 b. 3.939 c. 2.455 d. 2.716 e. 3.268You are replacing an HVAC system in your building. The system is a hot water system that consists of a boiler that feeds several air-handling units. The total heating load for the building is 2649 thousand Btuh. The max pressure required to pump through the furthest air-handling unit is 69 ft in total head. The inlet temperature at the air-handler is 196 F and the inlet-outlet temperature difference is 30 F. What is the required total flow rateExperiment Data Take the following data for the syringe injection pump Q/ Inner diameter of syringe barrel: D = 1.5 cm Inner diameter of the needle shaft of the syringe: d = 0.5 mm The thread pitch of lead screw: pt = 0.75 mm Lead screw rotation velocity (rpm): n Calculations a Liquid injection rate (cm³/hr) Q = pt*n* 60 * π * D²/4 Velocity of liquid in syringe barrel (cm/min) v₂ = 40/ (60** D²) Velocity of liquid in syringe needle (cm/min) v₁ = 40/ (60**d²) K 6- Find the rotation velocity of lead screw n and the velocity of liquid in syringe needle if the required injection dose is 1. 10 cm³ in 3 hours (continuous injection) 2. 20 cm³ in 12 hours (discontinuous injection, 5 cm³ each 3 hour, injection time = 1 min). Discus the reci Solution Calculate the liquid injection rate Q = P₁ xnx60xD² = 0.075xnx60××1.5² = 7.94n- cm² hr Calculate the velocity of liquid in barrel V₂ == 40 60xπx D² 4x7.94n 60xx1.5² = 0.07ncm hr Calculate the velocity of liquid in needle 40 60xπxd² 4x7.94n 60xπx…