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a gas transported through a 13m long, 15cm x 20cm duct at a
veloctiy of 5m/s....
Air enters a 10-m-long section of a rectangular duct of cross section 15 cm X 20 cm made of commercial steel at an average velocity of 7 m/s
Air enters a 10-m-long section of a rectangular duct of cross section 15 cm X 20 cm made of commercial steel at an average velocity of 7 m/s.(p = 1.145kg/m3 ,μ = 1.895x10-5kg/ms) and e=0.000045 m). For this pipe determine (a)the Reynolds number and decide weather the flow is laminar or turbulent (b) the head loss, (c) the pressure drop, and (d) the pumping power requirement to overcome this pressure drop.
16. (10p) Air in a heating system is distributed through a rectangular duct (0.2m x 0.3...
16. (10p) Air in a heating system is distributed through a rectangular duct (0.2m x 0.3 m) made of commercial steel (average roughness height = 0.000045 m) at a rate of 0.5 m/s. Calculate the pressure drop and head loss in the 40 m length part of this duct and the needed pumping power to overcome the losses. Pair 1.169 kg/m3, Hair = 1.918x10-5kg/ms
The duct of the heating of a house passes through the space not heated in the...
The
duct of the heating of a house passes through the space not heated
in the basement. The cross section is 0.050 m2. Hot air enters the
duct at 100.00 kPa and 60.00 ℃ and a speed of 5m / s. The
temperature drops to 54℃ as a result of the loss of heat to the
cold space in the basement. Determine the reason for the heat loss
of the air in the duct to the basement, plus the cost...
3) A rectangular HVAC duct of cross-section 20 cm X 20 cm and 12 m long...
3) A rectangular HVAC duct of cross-section 20 cm X 20 cm and 12 m long is made of 3.5 mm thick sheet metal that is used to deliver hot air at 60°C with an average velocity of 4 m/s. The thermal resistance of the duct is negligible, and the outer surface of the duct, whose emissivity is 0.305, is exposed to the cold air at 10 C in the room, with a convection heat transfer coefficient of 10 W/m²....
Q1: Heated air at 1 atm, 100F, and 23% relative humidity is to be transported in...
Q1: Heated air at 1 atm, 100F, and 23% relative humidity is to be transported in a 490 ft long circular plastic duct at a rate of 740 cfm (ft 3 /min). If the head loss in the duct is not to MEC_AMO_TEM_034_01 Page 1 of 8 Design of Thermal System (MECH 0009) - Spring-2020 -Assignment 2- A&B - QP exceed 790 in. of air, determine the minimum diameter of the duct. (Hint: initial guess value for the diameter is...
AIR ENTER A 5-M-LONG SECTION OF A RECTANGULAR DUCT OF CROSS SECTION 12*18 CM MADE OF...
AIR ENTER A 5-M-LONG SECTION OF A RECTANGULAR DUCT OF CROSS SECTION 12*18 CM MADE OF COMMERCIAL STEEL AT 1 ATM AND 35ºc AT AN AVERAGE VEL OF 6M/S. DISGREGARDING THE ENTRANCE EFFECTS, DETERMINE THE FAN POWER NEEDED TO OVERCOME THE PRESSURE LOSSES IN THIS SECTION OF THE DUCT.
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...
Air enters a 23-cm-diameter 13-m-long underwater duct at 53°C and 1 atm at a mean velocity...
Air enters a 23-cm-diameter 13-m-long underwater duct at 53°C and 1 atm at a mean velocity of 7 m/s, and is cooled by the water outside. If the average heat transfer coefficient is 85 W/m2 °C and the tube temperature is nearly equal to the water temperature of 5°C, determine the exit temperature of air and the rate of heat transfer. Use Table A-15 for the properties of air at the anticipated average temperature of 30°C. Answer in Watts. please...
MDB2053/MEB2073 A square duct consists of air flowing through a 0.5 m opening as is shown...
MDB2053/MEB2073 A square duct consists of air flowing through a 0.5 m opening as is shown in FIGURE 2 below. Due to the presence of boundary layer displacement thickness that increases in the direction of flow, the cross-sectional size of the duct is increased if a constant U = 0.8 m/s velocity is to maintained outside boundary layer U-08m du FIGURE 2 Determine the equation of the width of the cross section area of the duct, dix) with respect to...
A 20cm long thin conducting bar travels through a uniform magnetic field at 50m/s/ A. voltage...
A 20cm long thin conducting bar travels through a uniform
magnetic field at 50m/s/
A. voltage of 0.7 V is measured across the ends of this bar.
What is the magnetic field magnitude here?
B. Which end of the bar has the highest electric potential?
Defend your answer.
3. A 20-cm long thin conducting bar travels through a uniform magnetic field at 50 m/s. х В in) х х х х. х X х х х х х х х...
16. (10p) Air in a heating system is distributed through a rectangular duct (0.2m x 0.3 m) made of commercial steel (average roughness height = 0.000045 m) at a rate of 0.5 m/s. Calculate the pressure drop and head loss in the 40 m length part of this duct and the needed pumping power to overcome the losses. Pair 1.169 kg/m3, Hair = 1.918x10-5kg/ms
The
duct of the heating of a house passes through the space not heated
in the basement. The cross section is 0.050 m2. Hot air enters the
duct at 100.00 kPa and 60.00 ℃ and a speed of 5m / s. The
temperature drops to 54℃ as a result of the loss of heat to the
cold space in the basement. Determine the reason for the heat loss
of the air in the duct to the basement, plus the cost...
3) A rectangular HVAC duct of cross-section 20 cm X 20 cm and 12 m long is made of 3.5 mm thick sheet metal that is used to deliver hot air at 60°C with an average velocity of 4 m/s. The thermal resistance of the duct is negligible, and the outer surface of the duct, whose emissivity is 0.305, is exposed to the cold air at 10 C in the room, with a convection heat transfer coefficient of 10 W/m²....
Q1: Heated air at 1 atm, 100F, and 23% relative humidity is to be transported in a 490 ft long circular plastic duct at a rate of 740 cfm (ft 3 /min). If the head loss in the duct is not to MEC_AMO_TEM_034_01 Page 1 of 8 Design of Thermal System (MECH 0009) - Spring-2020 -Assignment 2- A&B - QP exceed 790 in. of air, determine the minimum diameter of the duct. (Hint: initial guess value for the diameter is...
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...
MDB2053/MEB2073 A square duct consists of air flowing through a 0.5 m opening as is shown in FIGURE 2 below. Due to the presence of boundary layer displacement thickness that increases in the direction of flow, the cross-sectional size of the duct is increased if a constant U = 0.8 m/s velocity is to maintained outside boundary layer U-08m du FIGURE 2 Determine the equation of the width of the cross section area of the duct, dix) with respect to...
A 20cm long thin conducting bar travels through a uniform
magnetic field at 50m/s/
A. voltage of 0.7 V is measured across the ends of this bar.
What is the magnetic field magnitude here?
B. Which end of the bar has the highest electric potential?
Defend your answer.
3. A 20-cm long thin conducting bar travels through a uniform magnetic field at 50 m/s. х В in) х х х х. х X х х х х х х х...
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