You are helping to design a new hot air balloon for an upcoming regatta. Assuming that...
You are helping to design a new hot air balloon for an upcoming regatta. Assuming that the temperature to which the air inside the balloon can be safely heated is 85 ˚C, what is the minimum volume require for the balloon if it is to lift a total weight (balloon plus passengers) for 250 kg. Take the outside air temperature to be 15 ˚C, the air pressure to be 1.00 bar, and make a reasonable assumption as to the composition of air (i.e., as mole %, 79% N2 and 21% O2). You can assume ideal gas behaviour.
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You are helping to design a new hot air balloon for an upcoming
regatta. Assuming that...
A hot air balloon has a volume of 2000 m3 when fully inflated and the air...
A hot air balloon has a volume of 2000 m3 when fully inflated and the air inside the balloon is at atmospheric pressure (101,000 Pa). What is the mass of hot air inside the balloon if its temperature is 120°C? (Assume a molecular weight of 28.8 g/mole for air, which is about 80% N2 and 20% O2.)
A hot air balloon has a volume of 20 cubic meters. If the air inside is...
A hot air balloon has a volume of 20 cubic meters. If the air inside is at a temperature of 70 degrees C and the outside air has a density of 1.17 kg/cubic meter, how much lift does the balloon generate? Hint: use 29.0 grams/mole of air.
The air in a hot-air balloon is heated to make the balloon rise. The air in...
The air in a hot-air balloon is heated to make the balloon rise. The air in a hot-air balloon is heated to make the balloon rise. The size of gas molecules increases with temperature. The pressure inside the balloon decreases and the balloon rises to equilibrate with the atmospheric pressure. The attractive forces between the particles of the gas inside the can become stronger. The particles spread farther apart and the density of air in the balloon becomes less than...
5. A very large hot air balloon and its accompanying structure (i.e. the basket, rigging, equipment,...
5. A very large hot air balloon and its accompanying structure (i.e. the basket, rigging, equipment, etc) have a mass of 400 kg. The air inside the balloon must be heated to a temperature of 200 OC for the balloon to lift off the ground when the outside air temperature is 16.0OC. To what temperature must the air be heated if the balloon is to lift off with three 80.0-kg people aboard? Note: Problem 5 requires three pictures of the...
The mass of a hot-air balloon and its cargo (not including the air inside) is 200...
The mass of a hot-air balloon and its cargo (not including the air inside) is 200 kg. The air outside is at 10.0°C and 101 kPa. The volume of the balloon is475 m3. To what temperature must the air in the balloon be heated before the balloon will liftoff? (Air density at 10.0°C is 1.25 kg/m3.) 1 K
Consider a hot air balloon with a volume of 1,500 m3. As you may remember, it...
Consider a hot air balloon with a volume of 1,500 m3. As you may remember, it will float when its average density (including its payload) is less than the density of air. Suppose that the empty balloon plus its payload have a mass of 200 kg, and that the bottom neck of the balloon is open to the air, as shown in the picture. a) What is the density of air at room temperature at ground level? (Assume that, by...
Constants Part C Hot air balloons float in the air because of the difference in density...
Constants Part C Hot air balloons float in the air because of the difference in density between cold and hot air. Consider a balloon in which the mass of the pilot basket together with the mass of the balloon fabric and other equipment is mb. The volume of the hot air inside the balloon is Vi and the volume of the basket, fabric, and other equipment is V2. The absolute temperature of the cold air outside the balloon is T...
Answer all parts including a picture showing all variables please! Thank you 1. While I was...
Answer all parts including a picture showing all variables
please! Thank you
1. While I was in the Serengeti I saw people watching wildlife froma hot air balloon. Seemed great. Imagine this: You fly down there and on a wonderful day at 20°C, you are supposed to take off You are skeptical about the hot air balloon carrying you, your two friends, the operator, the operator's dog, the weight of the balloon itself and all the sandwiches and beverages. From...
3) Consider the hot air balloon problem described in Lecture 1, pp. 22-24. That problem assumed...
3) Consider the hot air balloon problem described in Lecture 1, pp. 22-24. That problem assumed an outside air temperature of T- 300 K (27°C or 80.6°F), arn atmospheric pressure of 1.013 x 10 Pa (at sea level), and a spherical balloon shape. We would like to perform the same calculation but assuming atmospheric pressure in Albuquerque, NM, where the altitude is 1620 m wikipedia.org/wiki/Albuquerque_International_Balloon Fiesta) (a) First, we need to estimate the ambient pressure at an altitude of 1620...
-Rome can get pretty hot in the mid-summer! Most of the air conditioning units in the Tiber campus use the working flui...
-Rome can get pretty hot in the mid-summer! Most of the air conditioning units in the Tiber campus use the working fluid R-134a (1,1,1,2-tetrafluoroethane), which is replaces the less environmentally-friendly R-12 of years ago. a) Illustrate the following air conditioning cycle, indicating material, heat, and work flows, as well as given/known temperatures and pressures: R-134a is pressurized to 10.2 bar in an adiabatic, reversible compressor. This high-pressure, hot refrigerant is condensed outside of the building using ambient air to a...
Constants Part C Hot air balloons float in the air because of the difference in density between cold and hot air. Consider a balloon in which the mass of the pilot basket together with the mass of the balloon fabric and other equipment is mb. The volume of the hot air inside the balloon is Vi and the volume of the basket, fabric, and other equipment is V2. The absolute temperature of the cold air outside the balloon is T...
Answer all parts including a picture showing all variables
please! Thank you
1. While I was in the Serengeti I saw people watching wildlife froma hot air balloon. Seemed great. Imagine this: You fly down there and on a wonderful day at 20°C, you are supposed to take off You are skeptical about the hot air balloon carrying you, your two friends, the operator, the operator's dog, the weight of the balloon itself and all the sandwiches and beverages. From...
3) Consider the hot air balloon problem described in Lecture 1, pp. 22-24. That problem assumed an outside air temperature of T- 300 K (27°C or 80.6°F), arn atmospheric pressure of 1.013 x 10 Pa (at sea level), and a spherical balloon shape. We would like to perform the same calculation but assuming atmospheric pressure in Albuquerque, NM, where the altitude is 1620 m wikipedia.org/wiki/Albuquerque_International_Balloon Fiesta) (a) First, we need to estimate the ambient pressure at an altitude of 1620...
-Rome can get pretty hot in the mid-summer! Most of the air conditioning units in the Tiber campus use the working fluid R-134a (1,1,1,2-tetrafluoroethane), which is replaces the less environmentally-friendly R-12 of years ago. a) Illustrate the following air conditioning cycle, indicating material, heat, and work flows, as well as given/known temperatures and pressures: R-134a is pressurized to 10.2 bar in an adiabatic, reversible compressor. This high-pressure, hot refrigerant is condensed outside of the building using ambient air to a...
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