One kilogram of air is compressed at T = 100°C until V1 = 2V2. How much heat is rejected?
One kilogram of air is compressed at T = 100°C until V1 = 2V2. How much...
Please solve ASAP 6) One kilogram of air at 18 °C and 102 kPa is supplied to an engine operating on the Diesel cycle. After compression the temperature was 587°C and the pressure 4,52 MPa. The volumetric compression ratio is 15:1 and the heat added during the cycle is 1 849,2 kJ. Gamma = 1,4 ; R= 0,287 kr/kg.K ; C.-0,718 kr/kg.K (a) Calculate the volume of the air before compression and the temperature of the air after the (b)...
Air is compressed from 100kPa and 40°C to 1500kPa and 130°C. During the compression process, each kilogram of air loses 90kJ as heat to the environment. Air is discharged at rate of 10m^3/min. What is the power needed to drive the compressor?
Problem #4: Air is compressed in a piston cylinder from 1 bar, 17 °C such that the "2-30% v1 Assume polytropic compression with n - 1.3, negligible kinetic and potential energy changes, and ideal gas behavior. Determine the following. (a) the temperature of the exiting air, in °C; (b) the work and heat transfer, in kJ/kg (c) the entropy generated, in kJ/kgK, if heat transfer takes place at 520 K; (d) Also sketch the process on p-v and T-s diagrams...
Air in a piston-cylinder device is compressed from 27°C and 100 kPa to 900 kPa by following a process with Pv14-const. If air is considered as ideal gas, please determine: (1) The air temperature after compression, (2) The heat transfer into or out of the system
A piston–cylinder device contains 2 kg of air initially at 90 kPa and 30°C. The air is now compressed slowly in a process during which PV k = constant until the volume is reduced by one-half. If the exponent k characterizing the compression process is the specific heat ratio of the air for the average operating temperatures (Table A-2b), the net heat transfer for the process is expected to be zero (adiabatic). Determine the work done and show that the...
D) One kilogram of dry air is warmed from 20°C to 70 °C under a constant pressure of 1 atmosphere. Calculate: (a) the heat absorbed by the gas, (b) the work done, and (c) the change in internal energy. (50 250J, 14350J, 35 900 J).
How much compressed air (air flow rate) and air pressure do we need to generate 50 GPM at 60 psig when using the AODD pump shown in previous slide? AODD Performance Curve BAR FEET PSIG 300 20) 134 8-275- 120 250 AIR CONSUMPTION (SCFM) INnmh) (40)? 7 61 200 5-175 225-100 80 60 (80) [136) (100) 1170 150 125 3- 1001 40 75 5020 25 160 GPM [min] 40 80 120 200 (303] [454]606 758] Water Discharge Flowrates
A tank of compressed air of volume 1.00 m3 is pressurized to 22.4 atm at T = 273 K. A valve is opened, and air is released until the pressure in the tank is 13.7 atm. How many molecules were released? Boltzmann constant is 1.38 × 10−23 J/K. How long will the air in the tank last at 22.2 m? ___min
A tank of compressed air of volume 1.00 m3 is pressurized to 22.4 atm at T = 273 K. A valve is opened, and air is released until the pressure in the tank is 13.7 atm. How many molecules were released? Boltzmann constant is 1.38 × 10−23 J/K. ____ molecules
USE THE AIR TABLES 0.5 kg of air is initially at 280 K, 100 kPa in a frictionless adiabatic piston-cylinder. Find the volume of the cylinder (m). Find the initial internal energy (kj/kg) using the air tables. A. B. The air is compressed po ytropically according to P * (V)1.4 = constant to a volume which is 32.3% of the initial volume (V.-0323 V). Find the new volume (m), pressure (kPa), temperature (K) and internal energy (kJ/kg). Find the work...