Refrigeration and Air Conditioning Technology (MindTap Course List)
Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN: 9781305578296
Author: John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher: Cengage Learning
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Chapter 2, Problem 30RQ

A gas is compressed inside a compressor's cylinder. When the piston is at its bottom dead center, the gas is initially at 10 psig, 65°F, and 10.5 in3. After compression and when the piston is at top dead center, the gas is 180°Fand occupies 1.5 in3. What would be the new pressure of the gas in psig?

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A cylindrical vessel with a diameter of 8 inches and 5 feet long contained acetylene at 300 psi gauge and 82°F. After some amount of acetylene was used, the pressure was reduced to 190 psi gauge and the temperature was 74°F. The gas constant of acetylene is 59.35 ft-lb:/lbm-°R. Determine the following: 1. What is the initial mass in Ibm of the acetylene inside the vessel? 2. What proportion in percentage of acetylene was used? 3. What volume in ft would the used acetylene occupy at 30 psig and 80°F?
Gas at 70 bars gage pressure and 37.8°C is contained in a 12,900-cm3 cylinder. A piston compresses the volume to 9680 cm3 while the gas is heated to 93.3°C. What is the final pressure in the cylinder in bars?
=conetant procabese n=0 -n=½ n=2 n=1 7 A fixed mass of an ideal gas undergoes a polytropic process, from an initial pressure, temperature and volume of 180 kPa, 40°C and 1.5 m³ to a final temperature and volume of 180°C and 2.6 m³. How much work is done by the gas in this process (in kJ)? Your Answer: units Answer ph

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Refrigeration and Air Conditioning Technology (MindTap Course List)

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