The pressure in a car tire depends on the air temperature in the tyre. At 25°C air temperature, a pressure gauge shows 210 kPa (gage). The air volume in the tire is 25 liters and can be assumed to be constant. The atmospheric air pressure can be set to 100 kPa. a) Calculate the increase in pressure if the temperature in the tire is increased to 50°C. b) How much air (in g or kg) must be let out of the tire if you should have 210 kPa (gage) in the tire at the new temperature?

The pressure in a car tire depends on the air temperature in the tyre. At 25°C air temperature, a pressure gauge shows 210 kPa (gage). The air volume in the tire is 25 liters and can be assumed to be constant. The atmospheric air pressure can be set to 100 kPa. a) Calculate the increase in pressure if the temperature in the tire is increased to 50°C. b) How much air (in g or kg) must be let out of the tire if you should have 210 kPa (gage) in the tire at the new temperature?

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter2: Matter And Energy

Section: Chapter Questions

Problem 29RQ: If 3000 ft3 of air is crossing an evaporator coil and iscooled from 75F to 55F, what would be the...

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