FUNDAMENTALS OF THERMODYNAMICS
10th Edition
ISBN: 9781119634928
Author: Borgnakke
Publisher: WILEY
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9. An air compressor takes in air at 105 Pa and 27°C having volume of 1.5
m3/kg and compresses it to 4.5×105 Pa. Find the work done, heat transfer
and change in internal energy if the compression is isothermal.
A compressor has R-134a entering at 10°C, 100 kPa and exiting as a saturated vapor. It is given that this
particular compressor also involves heat loss (i.e., this compressor, in a non-typical fashion, has a non-
zero q; i.e., you cannot neglect q for this compressor). If the compressor operates in a reversible
isothermal manner, find the specific heat transfer and specific work.
6. Steam expands isentropically from 2 MPa and 375 °C to a final temperature of 95 °C.
Find the final quality and the work for a non-flow and steady flow processes.
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- Steam 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_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_forwardAn adiabatic turbine has an efficiency of 90%. If air is compressed from 1100kpa and 227 degree Celsius to 101kpa. Find the work done and final temperature. Sketch process on T-S diagram.arrow_forward
- A 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_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_forwardThe pressure and temperature entering the turbine is 1800kpaa and 380oC. The temperature leaving the turbine is 20kpa. The quality of steams entering the condenser is 90%. Find the turbine work in kJ/kg.arrow_forward
- A 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_forwardI need the answer as soon as possiblearrow_forwardNumber 3arrow_forward
- Solve this problem.arrow_forwardA piston/cylinder has a water volume separated in VA = 0.3 m³ and VB = 0.4 m by a stiff membrane. The initial state in A is 1000 kPa, x = 0.8 and in B it is 1500 kPa and 250°C. Now the membrane ruptures and the water comes to a uniform state at 200°C. What is the final pressure? Find the work and the heat transfer in the process. Po mp cb A:H2O B:H20arrow_forwardA mass-loaded piston/cylinder shown in figure containing air is at 300 kPa, 17°C with a volume of0.25 m³ while at the stops V = 1 m³. An air line, 500 kPa, 600 K, is connected by a valve that is then opened until a final inside pressure of 400 kPa is reached, at which point T = 350 K. Find irreversibility assuming that heat transfer is with the surroundings at 17°C.arrow_forward
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