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1. An air flow rate of 1.5 m/s at standard (15°C) conditions is expected in a...
Problem #3 (15 points) The flow rate of air at standard conditions in a rectangular duct...
Problem #3 (15 points) The flow rate of air at standard conditions in a rectangular duct is to be determined by installing pressure taps across a bend. The duct is 0.3 m deep and 0.1 m wide. The inner radius of the bend is 0.25 m. If the measured pressure difference between the taps is 40 mm of water, calculate the flow rate of air Duct Flow Bend R 0.25 0.3 m 0.1 Plan view of bend
A flow nozzle equipped with a differential pressure gage is used to measure the flow rate of water at 10°C (p 9997 kg/m3 and p 1.307 x 10-3 kg/m s) through a 3-cm-diameter horizontal pipe. The nozzle...
A flow nozzle equipped with a differential pressure gage is used to measure the flow rate of water at 10°C (p 9997 kg/m3 and p 1.307 x 10-3 kg/m s) through a 3-cm-diameter horizontal pipe. The nozzle exit diameter is 1.5 cm, and the measured pressure drop is 3.3 kPa. Determine the volume flow rate of water, the average velocity through the pipe, and the head loss 1.5 cm Differential pressure gage -3 m3(s m/s The volume flow rate of...
Question 3 (40 marks) (a) Air enters a horizontal nozzle with a velocity of 1 m/s,...
Question 3 (40 marks) (a) Air enters a horizontal nozzle with a velocity of 1 m/s, a pressure of 2 bar and a temperature of 350 K. At exit from nozzle, the air temperature is 450 K. The combined rate of specific heat transfers, and specific work transfers, w to the air as it passes through the nozzle is 150 kJ/kg. Assume that the air flow is steady and air can be treated as perfect gas with = 1005 J/(kg.K)....
Question 2 (30 marks) (a) A fluid flowing into a nozzle with specific enthalpy of 2980...
Question 2 (30 marks) (a) A fluid flowing into a nozzle with specific enthalpy of 2980 kJ/kg and the velocity is 80 m/s. At the exit of the nozzle, the specific enthalpy of the fluid drops to 2670 kJ/kg. The nozzle orientation is horizontal and the heat loss is negligible. Given that the nozzle inlet area is 0.25 m2 and the specific volume of the fluid is 0.2 m2/kg, calculate the velocity of the fluid at exit, the mass flow...
I. Air at 300 C and 40o kfa enters a round duct with mass flow rate...
I. Air at 300 C and 40o kfa enters a round duct with mass flow rate of 2.22 kg kec a a) Deternine the duct diameter, in meters, required for an air velacity of 50 Mkec b) If the air exits at 240 c and 380 kfa through a duct iameter of 20 cm, determine the exit velocity, in m/sec? M with a
Air flow is induced in an insulated tube of 7.16 mm diameter by a vacuum pump....
Air flow is induced in an insulated tube of 7.16 mm diameter by a vacuum pump. Air is drawn from a room where stagnation pressure is 101 kPa (abs) and stagnation temperature 23 °C, through a smoothly contoured converging nozzle. At station (1), where the converging nozzle joins the constant area tube, the static pressure is 98.5 kPa (abs). At section (2), located some distance downstream in the constant area tube, the air temperature is 14 °C. Determine a) the...
6 1 Determine the equivalent diameter Deg of a rectanqular duct 1000 x 600 mm and...
6 1 Determine the equivalent diameter Deg of a rectanqular duct 1000 x 600 mm and calculate the actual velocity in the duct f the volume flow rate of air through the duct is 4 8 m2/s (3) 62 Calculate the equivalent diameter, Deg ! (3) 63 Determine the pressure drop per metre from the velocity and equivalent diameter calculated in 6 1 (3) 64 Show on the flow rate vs friction loss chart that by entering the chart directly...
2 m Air flow rate (Q): 4 m/s Particulate concentration (c): 30 g/m Air-to-cloth ratio (A/C):...
2 m Air flow rate (Q): 4 m/s Particulate concentration (c): 30 g/m Air-to-cloth ratio (A/C): 0.01 m/( ms) Filtration velocity (vi): 0.01 m/s Fabric resistance (kt) 0.003 atm s/cm Filter cake resistance (k): 0.02 atm s mig Bag diameter (do) 20 cm Bag length (6) (0) Calculate the total area of fabric required (2 marks) (1) Determine the total number of bags required. (2 marks) if the pressure drop (Po) through the baghousefilter is given by Po = k/V...
2. (20%) Air at the 25 °C with a mass flow rate of m- 0.01 kg/sec...
2. (20%) Air at the 25 °C with a mass flow rate of m- 0.01 kg/sec enters a rectangular duct 0 6 em cross section and 2 m long. The duct wall is subjected to a uniform heat flux of qKw temperature of the air and the duct surface temperature at the duct outlet (A hydrod1.568 x 103 mls,Pr developed flow). Air properties to be used are:ρ-1.1774 kgm, C,-1.0057 0.708, k -0.02624 w/m-oC. 5 kw/m2. Determine the oulet ically and...
At steady state, air at 200 kPa, 325 K, and mass flow rate of 1.0 kg/s...
At steady state, air at 200 kPa, 325 K, and mass flow rate of 1.0 kg/s enters an insulated duct having differing inlet and exit cross-sectional areas. The inlet cross-sectional area is 6 cm2. At the duct exit, the pressure of the air is 100 kPa and the velocity is 300 m/s. Neglecting potential energy effects and modeling air as an ideal gas, determine a. the velocity of the air at the inlet, in m/s. b. the temperature of the...
Problem #3 (15 points) The flow rate of air at standard conditions in a rectangular duct is to be determined by installing pressure taps across a bend. The duct is 0.3 m deep and 0.1 m wide. The inner radius of the bend is 0.25 m. If the measured pressure difference between the taps is 40 mm of water, calculate the flow rate of air Duct Flow Bend R 0.25 0.3 m 0.1 Plan view of bend
A flow nozzle equipped with a differential pressure gage is used to measure the flow rate of water at 10°C (p 9997 kg/m3 and p 1.307 x 10-3 kg/m s) through a 3-cm-diameter horizontal pipe. The nozzle exit diameter is 1.5 cm, and the measured pressure drop is 3.3 kPa. Determine the volume flow rate of water, the average velocity through the pipe, and the head loss 1.5 cm Differential pressure gage -3 m3(s m/s The volume flow rate of...
Question 3 (40 marks) (a) Air enters a horizontal nozzle with a velocity of 1 m/s, a pressure of 2 bar and a temperature of 350 K. At exit from nozzle, the air temperature is 450 K. The combined rate of specific heat transfers, and specific work transfers, w to the air as it passes through the nozzle is 150 kJ/kg. Assume that the air flow is steady and air can be treated as perfect gas with = 1005 J/(kg.K)....
Question 2 (30 marks) (a) A fluid flowing into a nozzle with specific enthalpy of 2980 kJ/kg and the velocity is 80 m/s. At the exit of the nozzle, the specific enthalpy of the fluid drops to 2670 kJ/kg. The nozzle orientation is horizontal and the heat loss is negligible. Given that the nozzle inlet area is 0.25 m2 and the specific volume of the fluid is 0.2 m2/kg, calculate the velocity of the fluid at exit, the mass flow...
I. Air at 300 C and 40o kfa enters a round duct with mass flow rate of 2.22 kg kec a a) Deternine the duct diameter, in meters, required for an air velacity of 50 Mkec b) If the air exits at 240 c and 380 kfa through a duct iameter of 20 cm, determine the exit velocity, in m/sec? M with a
Air flow is induced in an insulated tube of 7.16 mm diameter by a vacuum pump. Air is drawn from a room where stagnation pressure is 101 kPa (abs) and stagnation temperature 23 °C, through a smoothly contoured converging nozzle. At station (1), where the converging nozzle joins the constant area tube, the static pressure is 98.5 kPa (abs). At section (2), located some distance downstream in the constant area tube, the air temperature is 14 °C. Determine a) the...
6 1 Determine the equivalent diameter Deg of a rectanqular duct 1000 x 600 mm and calculate the actual velocity in the duct f the volume flow rate of air through the duct is 4 8 m2/s (3) 62 Calculate the equivalent diameter, Deg ! (3) 63 Determine the pressure drop per metre from the velocity and equivalent diameter calculated in 6 1 (3) 64 Show on the flow rate vs friction loss chart that by entering the chart directly...
2 m Air flow rate (Q): 4 m/s Particulate concentration (c): 30 g/m Air-to-cloth ratio (A/C): 0.01 m/( ms) Filtration velocity (vi): 0.01 m/s Fabric resistance (kt) 0.003 atm s/cm Filter cake resistance (k): 0.02 atm s mig Bag diameter (do) 20 cm Bag length (6) (0) Calculate the total area of fabric required (2 marks) (1) Determine the total number of bags required. (2 marks) if the pressure drop (Po) through the baghousefilter is given by Po = k/V...
2. (20%) Air at the 25 °C with a mass flow rate of m- 0.01 kg/sec enters a rectangular duct 0 6 em cross section and 2 m long. The duct wall is subjected to a uniform heat flux of qKw temperature of the air and the duct surface temperature at the duct outlet (A hydrod1.568 x 103 mls,Pr developed flow). Air properties to be used are:ρ-1.1774 kgm, C,-1.0057 0.708, k -0.02624 w/m-oC. 5 kw/m2. Determine the oulet ically and...
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