A 19 cm radius air duct is used to replenish the air of a room 9.0m×5.9m×4.5m...
A 19 cm radius air duct is used to replenish the air of a room 9.0m×5.9m×4.5m every 19 min .
How fast does air flow in the duct?
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A 19 cm radius air duct is used to replenish the air of a room
9.0m×5.9m×4.5m...
Please show all steps Part A What is the volume rate of flow of water from...
Please show all steps
Part A What is the volume rate of flow of water from a 1.75-cm-diameter faucet if the pressure head is 16.0 m Express your answer with the appropriate units. IA Volume flow rate = 1 Value Units Submit Request Answer oblem T0.41 Constants PartA How fast does air flow in the duct? Express your answer to two significant figures and include the appropriate A 19 cm radius air duct is used to replenish the air of...
2. (10 points) A uniform air flow in a duct of 10 cm diameter is connected...
2. (10 points) A uniform air flow in a duct of 10 cm diameter is connected a manometer using working fluid of specific gravity of 0.7. The square well of the slant-tube manometer is sufficiently large that the elevation of the manometer fluid in it does not change T-200 significantly when fluid moves up in the leg of the manometer. When there is no flow in the duct, the liquid surface in the manometer les at 2.3 cm measured on...
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....
An air compressor used in a large car body shop is located in an inside equipment...
An air compressor used in a large car body shop is located in an inside equipment room. Fresh air at 5 ºC, 96 kPa is conveyed to the compressor from outside through a 30-cm circular duct that is 15-m long. The duct runs along the ceiling of the facility where the temperature is 34 ºC. If the air flow rate is 0.35 m3 /s, determine: a. the temperature of the air when it reaches the compressor (in ºC) b. the...
Cold conditioned air at 10°C is flowing inside a 1.5 cm thick square aluminum (k = 240 w/mK) duct...
Cold conditioned air at 10°C is flowing inside a 1.5 cm thick square aluminum (k = 240 w/mK) duct of inner cross section of 25x25cm at a mass flow rate of 1.0 kg/s. The duct is exposed to air at 35°C with a combined convection-radiation heat transfer coefficient of 15 W/m2K. The convection heat transfer coefficient at the inner surface is 75 W/.m2.K. If the air temperature in the duct should not increase by more than 1°C determine the maximum...
Problem 1 An air compressor used in a large car body shop is located in an...
Problem 1 An air compressor used in a large car body shop is located in an inside equipment room. Fresh air at 5 °C, 96 kPa is conveyed to the compressor from outside through a 30-cm circular duct that is 18-m long. The duct runs along the ceiling of the facility where the temperature is 34 °C. If the air flow rate is 0.35 m/s, determine the heat transfer rate Answer options: (A)|4920 WI (B) |5550 WI (C) |6078 W
6-108 An air-conditioner with refrigerant-134a as the working fluid is used to keep a room at...
6-108 An air-conditioner with refrigerant-134a as the working fluid is used to keep a room at 23C by rojece ing the waste heat to the outdoor air at 34'C. The room gains heat through the walls and the windows at a rate of 250 J/min while the heat generated by the computer, TV, and lights amounts to 900 W. The reſngcrant enters the com- pressor at 400 kPa as a saluralod vapor at a rate of 80 L/min and leaves...
Chapter 08, Problem 044 A 3-ft-diameter duct is used to carry ventilating air = 2.373 x...
Chapter 08, Problem 044 A 3-ft-diameter duct is used to carry ventilating air = 2.373 x 10- slugs/fr", v= 1.57 x 10 ft/s) into a vehicular tunnel at a rate of 8000 ft/min. Tests show that the pressure drop is 1.1 in. of water per 1500 ft of duct. What is (a) the value of the friction factor for this duct and (b) the approximate size of the equivalent roughness of the surface of the duct? Use this figure. (a)f=...
thank you! The air in a room with volume 180 m contains o.19 carbon dioxide initially,...
thank you!
The air in a room with volume 180 m contains o.19 carbon dioxide initially, fresher air with only 0.05% carbon dioxide flows into the room at a rate of 2 m/min and the mixed air flows out at the same rate. Find the percentage of carbon dioxide in the room as a function of time in minutes) P(1) - 0.001 What happens with the percentage of carbon dioxide in the room in the long run? lim pt) -...
Q1) Inner surface of a side wall is used for heating of ambient-room air as shown...
Q1) Inner surface of a side wall is used for heating of ambient-room air as shown below. There is an electrical heater with 10 W/m2 heat flux generation between a layer of insulation and 2 cm thick marble exposed to ambient-room air at T-20 °C with h-20 W/m2K. k-0.04 W/mK Marble with a thickness of 2 cm Ts= 10 ℃ outside Ambient-room air at To Electrical heating layer (negligible thickness) of temperature T-? Insulation with a thickness of 5 cm...
Please show all steps
Part A What is the volume rate of flow of water from a 1.75-cm-diameter faucet if the pressure head is 16.0 m Express your answer with the appropriate units. IA Volume flow rate = 1 Value Units Submit Request Answer oblem T0.41 Constants PartA How fast does air flow in the duct? Express your answer to two significant figures and include the appropriate A 19 cm radius air duct is used to replenish the air of...
2. (10 points) A uniform air flow in a duct of 10 cm diameter is connected a manometer using working fluid of specific gravity of 0.7. The square well of the slant-tube manometer is sufficiently large that the elevation of the manometer fluid in it does not change T-200 significantly when fluid moves up in the leg of the manometer. When there is no flow in the duct, the liquid surface in the manometer les at 2.3 cm measured on...
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....
Cold conditioned air at 10°C is flowing inside a 1.5 cm thick square aluminum (k = 240 w/mK) duct of inner cross section of 25x25cm at a mass flow rate of 1.0 kg/s. The duct is exposed to air at 35°C with a combined convection-radiation heat transfer coefficient of 15 W/m2K. The convection heat transfer coefficient at the inner surface is 75 W/.m2.K. If the air temperature in the duct should not increase by more than 1°C determine the maximum...
Problem 1 An air compressor used in a large car body shop is located in an inside equipment room. Fresh air at 5 °C, 96 kPa is conveyed to the compressor from outside through a 30-cm circular duct that is 18-m long. The duct runs along the ceiling of the facility where the temperature is 34 °C. If the air flow rate is 0.35 m/s, determine the heat transfer rate Answer options: (A)|4920 WI (B) |5550 WI (C) |6078 W
6-108 An air-conditioner with refrigerant-134a as the working fluid is used to keep a room at 23C by rojece ing the waste heat to the outdoor air at 34'C. The room gains heat through the walls and the windows at a rate of 250 J/min while the heat generated by the computer, TV, and lights amounts to 900 W. The reſngcrant enters the com- pressor at 400 kPa as a saluralod vapor at a rate of 80 L/min and leaves...
Chapter 08, Problem 044 A 3-ft-diameter duct is used to carry ventilating air = 2.373 x 10- slugs/fr", v= 1.57 x 10 ft/s) into a vehicular tunnel at a rate of 8000 ft/min. Tests show that the pressure drop is 1.1 in. of water per 1500 ft of duct. What is (a) the value of the friction factor for this duct and (b) the approximate size of the equivalent roughness of the surface of the duct? Use this figure. (a)f=...
thank you!
The air in a room with volume 180 m contains o.19 carbon dioxide initially, fresher air with only 0.05% carbon dioxide flows into the room at a rate of 2 m/min and the mixed air flows out at the same rate. Find the percentage of carbon dioxide in the room as a function of time in minutes) P(1) - 0.001 What happens with the percentage of carbon dioxide in the room in the long run? lim pt) -...
Q1) Inner surface of a side wall is used for heating of ambient-room air as shown below. There is an electrical heater with 10 W/m2 heat flux generation between a layer of insulation and 2 cm thick marble exposed to ambient-room air at T-20 °C with h-20 W/m2K. k-0.04 W/mK Marble with a thickness of 2 cm Ts= 10 ℃ outside Ambient-room air at To Electrical heating layer (negligible thickness) of temperature T-? Insulation with a thickness of 5 cm...
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