FUNDAMENTALS OF THERMODYNAMICS
10th Edition
ISBN: 9781119634928
Author: Borgnakke
Publisher: WILEY
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An automobile tire is inflated to 105 kPa at 30 deg. C. After being driven the temperature rises to 55 deg. C. Find the final pressure under isochoric process.
1 kg of steam expands isentropically from 2.5 MPa & 300 Degrees Celsius to .95 MPa. Find the final quality and Wn, Ws.
A factory generates compressed air from 100 kPa, 17°C by compression to 800 kPa, 500 K, after which it cools
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transfer in the cooler.
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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.arrow_forwardSteam expands isentropically from 2 MPa and 375 o C to a final temperature of 95 o C.Find the final quality and the work for a non-flow and steady flow processes.arrow_forwardQ2) A piston/cylinder has ammonia at 1600 kPa, 100°C with a volume of 0.1 m3. The piston is loaded with a linear spring and outside ambient is at 20 °C. The ammonia now cools down to 10 °C at which point it has a quality of 10%. Find the work, the heat transfer and the total entropy generation in the process. NH₂arrow_forward
- Steam at 120 bar has a specific volume of 0.01721 m3/kg, find the temperature, enthalpy and the internal energy.arrow_forwardA piston/cylinder receives (control mass system) R-134a at 300 kPa and compresses it in a process where the entropy does not change. to a state of 1000 kPa, 60° C. Find the initial temperature, AND THE CHANGE IN INTERNAL ENERGY.arrow_forwardDuring an isentropic process of 3 lb/sec of air, the temperature increases from 50 deg F to 290 deg F. Find the work for a nonflow process.arrow_forward
- The air conditioner in a house or a car has a cooler that brings atmospheric air from 30 degree Celsius to 10 degree Celsius, both state at 101 kPa. For a flow rate of 0.75 kg/s find the rate of heat transferarrow_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 steam turbine has an inlet of 4 kg/s water at 1000 kPa, 400 oC and velocity of 77 m/s. The exit is at 100 kPa, 150 oC and very low velocity. Find the specific work and the power produced.arrow_forward
- A 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_forwardSteam 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_forwardA condenser (heat exchanger) brings 1 kg/s water flow at 10 kPa quality 95% to saturated liquid at 10 kPa. The cooling is done by lake water at 20 degree Celsius that returns to the lake at 30 degree Celsius. For an insulated condenser, find the flow rate of cooling water.arrow_forward
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