FUNDAMENTALS OF THERMODYNAMICS
10th Edition
ISBN: 9781119634928
Author: Borgnakke
Publisher: WILEY
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A piston cylinder containes 0.1 kg air at 100 kpa, 126.85 C which goes through a
polytropic compression process with n=1.3 to a pressure of 300 kpa. How much work
has the air done in the process?
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In an engine, the air in a piston-cylinder arrangement has a compression ratio of 0.1. It starts from 100kPa and
20degC. Find the temperature at state 2. You can assume an adiabatic process and the ideal gas law applies.
At an isentropic non-flow process of air, the pressure decreases from 62 psia to 17 psia.It has a mass of 0.15 lb and with initial temperature of 275°F. Find the heat transferred,BtuA. 0 B. 100 C. 200 D. 300
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- find the work posses for a carbon dioxide gas at 1958.76 C in kj/kg. use W=mRTarrow_forwardA rigid insulated tank is separated into two rooms by a stiff plate. Room A of 0.5 m3 contains air at 250 Kpa, 300 K and room B is 1 m3 has air at 200 Kpa, 1000 K. the plate is removed and the air comes to a uniform state without any heat transferred. find the final temp and pressure of the room. An ideal gas is 45 psig and 800F is heated in a closed container to 130 0F. What is the final pressure? An air bubble rises from the bottom of a well where the temperature is 25 0C, to the surface where the temperature is 27 0C. Find the percent increase in the volume of the bubble if the depth of the well is 5m. Atmospheric pressure is 101.528 kPaa. A 3000 cm3 tank initially contains compressed air at 600 kPag and 28 oC. Determine the mass of air to be withdrawn from the tank to reduce its pressure to 80 kPag while the temperature remains unchanged.arrow_forwardAn amount of 4000 BTU of heat is transferred from a reservoir at 800 deg. F to a reservoir at 200 deg. F. Find the entropy change of the system.arrow_forward
- A fraction of some power to a motor (1), 2 kW, is turned into heat transfer at 500 K (2) and then it dissipates in the ambient at 300 K (3). Give the rates of exergy along the process 1-2-3.arrow_forwardA rigid insulated tank is separated into two rooms by a stiff plate. Room A of 0.5 m 3 contains air at 250Kpa, 300 K and room B is 1 m 3 has air at 200 Kpa, 1000 K. the plate is removed and the air comes to auniform state without any heat transferred. find the final temp and pressure of the room.arrow_forwardPlease be very detailedarrow_forward
- A rigid insulated tank is separated into two rooms by a stiff plate. Room A of 0.5 m3 contains air at 250 Kpa, 300 K and room B is 1 m3 has air at 150 Kpa, 1000K. the plate is removed and the air comes to a uniform state without any heat transferred. find the final temp and pressure of the room.arrow_forwardA compressor receives R-410A as saturated vapor R-410A at 400 kPa and brings it to 2000 kPa, 60°C. Then a cooler brings it to saturated liquid at 2000 kPa (see Fig. below). Find the specific compressor work and the specific heat transfer in the cooler? A eccoi = Compressor Compressor section Cooler sectionarrow_forwardA factory generates compressed air from 100 kPa, 17°C by compression to 800 kPa, 500 K, after which it cools in a constant pressure cooler to 300 K, (see Fig. P4.36). Find the specific compressor work and the specific heat transfer in the cooler. 1 2 3 Compressor -w. Compressor section Cooler sectionarrow_forward
- Steam enters a turbine at 3500 kPa, 500 C and velocity of 300 m/s and exit at 15 kPa and 25 C. Heat loss is 15 kw. The mass flow rate is 10 kg/s. Find the work output.arrow_forwardThere are received 25 kg/s of steam at 2.15 MPa, 480°C by a Rankine engine; exhaust occurs at 0.10MPa. find the work of turbine in kJ/s. Insert TS diagram, Use Steam Table SI unit onlyarrow_forward21. Find the change in internal energy of 5lbm of oxygen gas when the temperature changes from 0.157BTU 100°F to 120°F, c lbm-R Varrow_forward
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