FUNDAMENTALS OF THERMODYNAMICS
10th Edition
ISBN: 9781119634928
Author: Borgnakke
Publisher: WILEY
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How much entropy is transferred if 200 W of thermal energy are transferred to a heat sink at 300K?
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One kg steam expands isentropically from 2.1 MPa and 374 deg C to 93 deg C. Find the final quality of steam.
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- A 4 m3 cryogenic storage tank contains nitrogen at 110 K, with quality 25%. Saturatedvapor is now slowly withdrawn while some heat transfer takes place to a final state of110 K, x = 0.65. Find the mass withdrawn and the heat transfer.arrow_forwardA piston with water vapor at a pressure of 300 kPa and a temperature of 175 oC. 20 kg of fluid is compressed up to 950 kPa pressure in the cylinder arrangement. Piston cylinder device to a heat well at 80 oC in order to keep the temperature of the water in it constant. The heat generated during compression is discarded. a) What phase is the water in the first case? In the last case, what phase is the water in? b) Find the entropy change in water by the process. c) From the cylinder, assuming that the process is a reversible process at constant temperature. Calculate the amount of heat absorbed. d) Find the entropy change of the heat well. e) Consider the total entropy change including the piston-cylinder mechanism and the heat indicate whether the transaction is reversible or irreversible when received. f) T (° C) -s (kJ / kgK) and P (Pa) - by specifying the state change saturation curves and values Show in (m³ / kg) diagrams.arrow_forwardI need the answer as soon as possiblearrow_forward
- 6. Five pounds of a certain ideal gas with K 1.30 and R= 35 is compressed in %3D polytropic process in a closed system from 15 psia, 80 F to 60psia, 315 F. Compute the polytropic index n, the work nonflow and the heat interactions with the surroundingsarrow_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_forward1. Kittel Ch3-1. Free energy of a two state system. (a) Find an expression for the free energy as a function of 7 of a system with two states, one at energy 0 and one at energy E. (b) From the free energy, find expressions for the energy and entropy of the system. The entropy is plotted in Figure 3.11.arrow_forward
- QUI A piston-cylinder device with a set of stops initially contains 300 g of steam at 1000 Kpa and 400 C. Find the work if the final state IMpa and 250 C, and work if the position of the stops corresponds to 60% of the initial volume and also find the temperature at the final state if P-500Kpa Steam 300 g 1000 Kpy 400°C earrow_forwardFour kilograms per second of Methane is compressed isentropically from 104.3 kPa, 140 degree Fahrenheit to 440.6 degree Fahrenheit. Assuming that the process is for ideal gas, find: Final Pressure, torr Change in entropy Work, HParrow_forwardCorrect solution will be liked.arrow_forward
- i need the answer quicklyarrow_forward2.A piston cylinder arrangement contains steam at 10MPaa saturated liquid. Heat was transferred isothermally so that the pressure reaches 2MPaa. а. Find the final temperature of the steam. b. Find the change of entropy in kJ/kg if there is no entropy production.arrow_forward(b) Steam at 140 bar has an enthalpy of 3001.9 kJ/kg, find the temperature, specific volume and the internal energy.arrow_forward
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What is entropy? - Jeff Phillips; Author: TED-Ed;https://www.youtube.com/watch?v=YM-uykVfq_E;License: Standard youtube license