If methane (assumed to be in its ideal-gas state) is compressed adiabatically from 20 degree celcius and 140 kPa to 560 kPa, estimate the work requirement and the discharge temperature of the methane. The compressor efficiency is 0.75.
If methane (assumed to be in its ideal-gas state) is compressed adiabatically from 20 degree celcius...
7.35. Methane is compressed adiabatically in a pipeline pumping station from 3500 kPa and 35°C to 5500 kPa at a rate of 1.5 kg mol⋅s−1. If the compressor efficiency is 0.78, what is the power requirement of the compressor and what is the discharge temperature of the methane?
A monatomic ideal gas at an initial temperature of 390 K is compressed adiabatically from an initial volume of 120 L to a final volume of 40.0 L. What is the final temperature of the gas?
Air is compressed steadily and adiabatically from 17 C and 97 kPa to 276 C and 604 kPa. Assuming constant specific heats for air at room temperature, what is the isentropic efficiency of the compressor?
One mole of ideal gas initially at 27 degree C is compressed adiabatically from 6 dm^3 to 3 dm^3 against constant external pressure of 15 atm. Calculate Delta E, Delta H, Q, and W for this process.
In an engine, an almost ideal gas is compressed adiabatically (see Note below) to half its volume. In doing so, 2630 Joules of work is done on the gas. (a) How much heat flows into or out of the gas? (b) What is the change in internal energy of the gas? (c) Does its temperature rise or fall? Note: An adiabatic process is one that occurs without transfer of heat or matter between a thermodynamic system and its surroundings. In...
In an engine, an almost ideal gas is compressed adiabatically to half its volume. In doing so, 2900 J of work is done on the gas. How much heat flows into or out of the gas? Q- Submit Request Answer Part B What is the change in internal energy of the gas? Submit Request Answer
Two mole of ideal gas, is compressed adiabatically in a piston/cylinder device from 2 bar and 25oC to 7 bar. The process is irreversible and requires 25% more work than a reversible, adiabatic compression from the same initial state to the same final pressure. What is the entropy change of the gas? Assume Cv=(5/2)R in this calculation.
1. (3 Points) Air (as an ideal gas) is compressed in an adiabatic compressor from an initial state of 100 kPa and 300K to a final state of at 200 kPa and 600K. Determine the change in specific entropy of air during this compression process. 2. (3 Points) A heat engine operates between two temperature limits of 1300 K and 400 K. It receives 1.2 MJ of heat while producing 500 kJ of useful work. Determine: a. The exergy of...
Nitrogen gas is compressed adiabatically in a steady-flow, steady-state process from 0.1 MPa and 25oC at a rate of 0.2 kg/s. The air exits the compression at a temperature of 125oC. Assuming cold-air constant properties, use the values found in Table A-2(a) and determine the exit pressure [kPa] by using the polytropic relationship using n=k.
1.2 moles of ideal gas in a cylinder are compressed isothermally from an initial pressure of 120 kPa and a volume of 0.025 m3 to a final volume of 0.004 m3. Calculate the temperature and the final pressure of the gas; and also estimate the work done on the gas.