Questions from Thermal Fluid Science

Q: Rework Prob. 9–46 when the isentropic compression efficiency is

Rework Prob. 9–46 when the isentropic compression efficiency is 90 percent and the isentropic expansion efficiency is 95 percent. Data from Prob. 9-46: An ideal Diesel cycle has a compression ratio o...

Q: An air-standard Diesel cycle has a compression ratio of 16

An air-standard Diesel cycle has a compression ratio of 16 and a cutoff ratio of 2. At the beginning of the compression process, air is at 95 kPa and 27°C. Accounting for the variation of specific hea...

Q: Repeat Prob. 9–48 using constant specific heats at room

Repeat Prob. 9–48 using constant specific heats at room temperature. Data from Prob. 9-48: An air-standard Diesel cycle has a compression ratio of 16 and a cutoff ratio of 2. At the beginning of the...

Q: How are the combustion and exhaust processes modeled under the air-

How are the combustion and exhaust processes modeled under the air-standard assumptions?

Q: A pressure gage connected to a tank reads 50 psi at a

A pressure gage connected to a tank reads 50 psi at a location where the barometric reading is 29.1 in Hg. Determine the absolute pressure in the tank. Take ρHg = 848.4 lbm/ft3.

Q: An air-standard Diesel cycle has a compression ratio of 18

An air-standard Diesel cycle has a compression ratio of 18.2. Air is at 120°F and 14.7 psia at the beginning of the compression process and at 3200 R at the end of the heat-addition process. Accountin...

Q: Repeat Prob. 9–50E using constant specific heats at room

Repeat Prob. 9–50E using constant specific heats at room temperature. Data from Prob. 9-50: An air-standard Diesel cycle has a compression ratio of 18.2. Air is at 120°F and 14.7 psia at the beginnin...

Q: An ideal Diesel cycle has a maximum cycle temperature of 2000°

An ideal Diesel cycle has a maximum cycle temperature of 2000°C. The state of the air at the beginning of the compression is P1 = 95 kPa and T1 = 15°C. This cycle is executed in a four-stroke, eight-c...

Q: An ideal diesel engine has a compression ratio of 20 and uses

An ideal diesel engine has a compression ratio of 20 and uses air as the working fluid. The state of air at the beginning of the compression process is 95 kPa and 20°C. If the maximum temperature in t...

Q: Repeat Prob. 9–53, but replace the isentropic expansion

Repeat Prob. 9–53, but replace the isentropic expansion process with a polytropic expansion process with the polytropic exponent n = 1.35. Use variable specific heats. Data from Prob. 9-53: An ideal...