Two pounds-mass of air is expanded from 15 psia and 560 R until its volume has doubled. Assume the air behaves as an ideal gas and that the process is polytropic, PŁ-2 = C. Let c, = 0.171 Btu/lbm-R. Determine %3D a) the work transfer [ft-lbf], and b) the heat transfer [Btu].

Two pounds-mass of air is expanded from 15 psia and 560 R until its volume has doubled. Assume the air behaves as an ideal gas and that the process is polytropic, PŁ-2 = C. Let c, = 0.171 Btu/lbm-R. Determine %3D a) the work transfer [ft-lbf], and b) the heat transfer [Btu].

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

See similar textbooks

Related questions

Q: 5. How much calories is required to change 600 gm of ice at – 2 °C to steam at 120°C? a. 483,630 b.…

Q: Discuss the two primary classes of thermodynamic cycles.

A: Concept: The two primary classes of thermodynamic cycles are, 1) Power cycles 2) Heat pump or…

Q: Which law of thermodynamics expresses that the energy is always conserved quality wise? O First law…

Q: For the Figure shown, answer the following three questions Oxygen is first at a pressure of 250 kpa…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: The energy balance in an open or steady-flow thermodynamic system is? A.) PE1+KE1+ Wf1+U1+Q=…

A: The energy balance in an open or steady-flow thermodynamic system is? A.) PE1+KE1+ Wf1+U1+Q=…

Q: . Determine the Saturation Temperature and Saturation Pressure of the following

A: Determine the saturation temperature and saturation pressure.

Q: Refrigerator 1 operates as a reverse Carnot cycle using R-717 as refrigerant at a flow rate of 1.8…

Q: 4. The pump of a water distribution system is powered by a 15-kW electric motor whose efficiency is…

A: Given data: Pmotor=15 kWηmotor=90%Q=50 L/s=50×10-3 m3/sPi=100 kPaPo=290 kPa Need to determine the…

Q: The Second Law of Thermodynamics: Kelvin–Planck Statement

A: It is not possible for any device which can operate in a cycle to receive heat from a single…

Q: First law of thermodynamics is based on which principal?

Q: Examples of 2nd law thermodynamics at home

A: 2nd law of thermodynamics - this law state the direction of heat flow. According to this law heat…

Q: How does fluid friction and heat loss affect the efficiency of plant

A: Fluid friction cause lost of energy that decrease the efficiency of plant.

Q: different rpoperties of thermodynamics

A: there are two types of properties of thermodynamics- 1-intensive properties 2-extensive properties

Q: Explain two thermodynamic applications in your home and industry field?

A: To give two thermodynamics applications in home and industry field.

Q: The power law index of Newtonian fluids equal to

A: Basically the power law model is used to describe those materials which follows the power law.

Q: What is the relevance of geothermal power plant to the course mechanical engineering?

A: In order to produce electricity to the electrical grid for society's electrical demands, most…

Q: Which of the following processes múst violate the first law of thermodynamics? 1) W> 0, Q 0, Q 0 3)…

Q: Give for 5 practical applications of thermodynamics and explain each.

A: The field of science that deals with the transfer of energy from one form to another, as well as the…

Q: How airways transportation make use of thermodynamics

A: Airways transportation required fuel, which burn to generate heat to propel the engine of aircraft…

Q: Question 6 Name the four criteria for classifying compressors. 01.highest pressure developed 2.…

A: Given: There are several criteria for which we can classify compressors. But we have to classify…

Q: Explain Second Law of Thermodynamics and give your own example.

Q: An engineer wishes to carry out a thermodynamic analysis of the operation of a hairdryer with a…

A: Given data and Explanation : Basically Hair dryer works on the principle of the air blows and uses…

Q: How many types of thermodynamics systems .explain with the help of a system diagram?

Q: A heat engine with a thermal efficiency of 45% rejects 1000 kJ/kg of heat to a low temperature sink.…

Q: Examine the performance of engineering devices in light of the second law of thermodynamics.

A: Second law of thermodynamics is states that it is impossible to convert the given amount of low…

Q: The cycle for a heat engine consists of Compression from points 1 to 2. No heat flow but work done…

A: Given: process 1 to 2: It has compression and heat flow is zero. So→Q12=0 And work done on the gas…

Q: he figure below shows a thermodynamic cycle undergone by a certain system. Find the mean effective…

A: Given:

Q: PA 2 V

A: For solution refer below images.

Q: Based on thermodynamics of a process, explain intermediary energy. Mention the three characteristic…

A: Intermediary energy can also be said internal energy. In thermodynamics, when a system goes in any…

Q: Explain by writing the first law of thermodynamics.

A: Thermodynamics in physics is defined as the branch that handles the heat, work and temperature, and…

Q: The following processes occurs in a reversible thermodynamiC cycle 1-2 Reversible polytropic…

Q: he molar heat capacities of substances varies with temperature. The general function for determining…

A: Given:Cp=(a+bT+cT2)*Ra=3.245b=7.108*10-4 k-1c=-4.06*10-8 K-2

Q: First law of thermodynamics is based on which concept?

A: First Law of thermodynamics- according to this law energy can neither be created nor destroyed, it…

Q: A/A heat pump is used to meet the heating requirements of a house and maintain it at 20 C°. On a day…

A: Given Data A heat pump is maintaining a house at 20oC. TH=20+273=293 K The outdoor temperature…

Q: No. 1 2 Substance Water R134a T °C 300 P kPa 1300 m³/kg u kJ/kg h kJ/kg S kJ/kg-K 0.37973 Quality X…

A: Given

Q: A composite plane wall consists of a 4-in.-thick layer of insulation (ks = 0.029 Btu/h ft. °R) and a…

Q: Derive the 7 General Property equation of the following thermodynamic processes: 1. Isometric…

Q: What is the difference between an open control volume system and a closed isolated system? Please…

Question

Thermodynamics problem

### Problem Statement:

Two pounds-mass of air is expanded from 15 psia and 560 R until its volume has doubled. Assume the air behaves as an ideal gas and that the process is polytropic, with \( P V^{1.2} = C \). Let \( c_v = 0.171 \) Btu/lbm-R. Determine:

a) The work transfer \([ \text{ft-lbf} ]\), and
b) The heat transfer \([ \text{Btu} ]\).

Science that deals with the amount of energy transferred from one equilibrium state to another equilibrium state.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Step 5

Step by step

Solved in 5 steps with 5 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

This Concepts revolves around thermodynamics and this practice example may need a PV diagram Directions are below
Thermodynamics: Please show step by step solution for the following Practice problem
A cycle composed of three processes, 1-2 : constant volume.2-3 expansion with PV = constant and 3-1: constant pressure, occurs in a piston cylinder assembly. V1=0.025 m^3. U2-U1= 26.4 kJ. P1= 1.8 bar. U2=U3. Work of process 3-1 is equal to -12.3 kJ. Determine the relative increase in the value of Qcycle if the process 2-3 is replaced by a polytropic process with n=1.5. Select one: O a. 88 % b. 65 % O c. 79 % O d. 93 % e. 83 %
Define thermodynamic system. Explain with neat diagrams, the types of thermodynamics systems. Give at least 2 examples each
2. Electrical components often failure due to thermal overload. It follows that thermal analysis of electrical components is critical to their longevity. Consider a silicon chip which is sitting atop a ceramic substrate with 35 mm2 of exposed surface area. Operating at steady state, the chip can pull up to 120 mW of power. The chip surface is cooled by convection from flowing air at 20°C. The heat transfer from the chip to the air is given by Q = hA(T, – T) where h is the thermal convection coefficient, A is the exposed surface area, and Tb and Tr are absolute temperatures of the body and coolant fluid, respectively. h of the flowing air is found to be 250 W/(m2-K). Assuming heat transfer to the substrate is negligible compared to convection, determine: the heat transfer occurring at steady state (W) the temperature at the outer surface of the chip ("C) a. b.
A cycle composed of three processes, 1-2: constant volume.2-3 expansion with PV = constant and 3-1: constant pressure, occurs in a piston cylinder assembly. V1=0.025 m^3. U2-U1= 26.4 kJ. P1= 1.8 bar. U2=DU3. Work of process 3-1 is equal to -12.3 kJ. Determine the relative increase in the value of Qcycle if the process 2-3 is replaced by a polytropic process with n=1.3. Select one: a. 68 % b. 70 % c. 38 % d. 51 % e. 46 %
answer
Law of Thermodynamics Number 3
Explain the two statement of the second law of the thermodynamics.
What is the first law of thermodynamics?
State if the listed statement is Ture (T) or False (F) and correct the false statement: 1. Thermodynamic is a science of energy 2. Closed system is also called control volume 3. Steam power plant cycle is employed to produce a mechanical and electrical energy 4. In a Carnot cycle, the isothermal process in a boiler and a condenser ( ) 5. Isobaric process means volume is constant 6. Isentropic process means adiabatic and reversible 7. Pump is a device that consumes energy 8. Compressor is a device that raises a pressure of incompressible fluid flow ( ) 9. Thermal efficiency means the output by input 10. Cycle means a group of process that has initial state and final state ( ) ( )
describe how the Internal Combustion Engines (ICEs) (applicable to a particular purpose such as generators, vehicle, domestic device etc.) was improved in terms of sustainability in consideration to energy use and pollution effects. 1.Conclusions: Findings based on your current knowledge of thermodynamics should be expressed. Suggestion and implication on possible saving or future projection(s)