3. Please consider a well-insulated compressor that was taking in an idealdiatomic gas at 1 atm and 25 °C at the rate of 1 mole/min. The compressorexhausted the gas at 7.5 atm. The First Law Thermodynamic Efficiencywas 74.1%. Please write and reducea. The Mass Balanceb. The Energy Balance for the Real Casec. The Energy Balance for the Ideal Cased. The Entropy Balance for the Real Casee. The Entropy Balance for Case

Answered: Image /qna-images/answer/1d719346-0354-40a8-842b-589b8130724e.jpg

Answered: 3. Please consider a well-insulated…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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(2) Describe briefly why the following statements are wrong. (a) "Hot cup of coffee becoming cold spontaneously is an entropy-decreasing process. So the law of entropy increase can be violated." (b) “Air conditioners require bulky external unit, exhausting heat to outside. With the technology constantly advancing, external unit will be eliminated in the future."
Steam is bled from a turbine to supply 2 MW of process heat in a chemical plant at 200 °C, as shown in the schematic, so that state 4 is saturated Part A liquid water at 200 °C. At the turbine inlet, (state- 1) steam is at 5 MPa , 500 °C and at the turbine exit the pressure is 10 kPa. (Figure 1) Determine the quality of steam at the turbine exit. Express your answer to two significant figures. Πν ΑΣ φ vec Submit Request Answer Part B Determine the bleed pressure (assume no frictional losses). Express your answer to three significant figures. Πν ΑΣ φ vec ? MPа Submit Request Answer Part C Determine the bleed rate. Express your answer to three significant figures. ΑΣφ vec ? kg/s Submit Request Answer Figure 1 of 1 Turbine Part D output Determine the mass flow rate (m) at the turbine inlet if the power output is 2 MW Express your answer to three significant figures. Process heat ΑΣΦ vec ? kg/s
A steam turbine drives an air compressor-all power produced by the turbine is sent to the compressor; there is no extra power produced. Steady-state operating data are provided on the figure. Assume the ideal gas model for air, and ignore stray heat transfer and kinetic and potential energy effects. Steam 1 STATE DATA for SYSTEM P, = 30 bar T, = 600°C m = 1.5 kg/s n = 80% P2 = 3 bar P3 = 1 bar T3 = 27°C Turbine Compressor %3D 2 Air
M6
Use the following Data for Nitrogen gas: R= 0.2968 kJ/kg.K, C,=1.0418 kJ/kg.K, C,=0.745 kJ/kg.K, Required: Draw consistent, clear and standard schematic for the problem representing the inlet and outlet conditions and label your schematic with the given operating conditions. Analyze the problem systematically using step-by-step CV energy and mass analyses, state your assumptions (wherever applicable), and determine the following (circle your final answers): (a) The specific volume and density at the inlet and exit of the compressor; (b) The difference in the specific enthalpy between the exit and inlet of the compressor assuming a constant specific heat Cp; (c) The specific heat loss from the compressor;
A1. Use the thermodynamic identity to derive an expression for the heat capacity of a gas at constantpressure, CP , in terms of a partial derivative involving entropy.
For a thermodynamic process, when delta Hsys > 0, and delta Ssys < 0, the process is (spontaneous at all temperatures, non-spontaneous at all temperatures or spontaneous only at high temperatures).
Select the correct expressions of the entropy change for the ideal gases with constant specific heats for arbitrary processes ___________ A. B. C. D.
QUESTION 3: |6] A cylinder that contains X kg (X = the first 2 digits of your student number divided by 330) of carbon dioxide (with molar mass 44 kg/kmol), occupying a volume of 0.025 m² at 1.1 bar, is compressed reversibly until the pressure is Y bar (Y = sum all digits of your student number divided by 10). Calculate the final temperature, the work done on the CO,, and the heat supplied when the process is isothermal.
Establish the increase of entropy principle.
A tomato paste containing 25% solids is heated from 30 ° C to 72 ° C. The steam used for heating enters saturated and 132 ° C and exits at 110 ° C as condensed water. Calculate the amount of steam used for the heating process. (cpTomato juice = 3.34 * ms +0.8376, H132 ° C = 2722.63 kj / kg H120 = 461.32 kj / kg) A.) 4.680 kg B.) 2.569 kg C.) 0.0311 kg D.) 1.570 kg E.) 62.20 kg
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