A rigid tank of volume 0.5 m3 is initially evacuated. A tiny hole develops in the wall, and air from the surroundings at 1 bar, 21° C leaks in . eventually, the pressure in the tank reaches 1 bar. The process occurs slowly enough that heat transfer between the tank and the surroundings keeps the temperature of the air inside the tank constant at 21° C. Determine the amount of heat transfer.

A rigid tank of volume 0.5 m3 is initially evacuated. A tiny hole develops in the wall, and air from the surroundings at 1 bar, 21° C leaks in . eventually, the pressure in the tank reaches 1 bar. The process occurs slowly enough that heat transfer between the tank and the surroundings keeps the temperature of the air inside the tank constant at 21° C. Determine the amount of heat transfer.

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: 3.2) An isolated piston-cylinder contains 3 liters of saturated liquid water at a constant pressure…

A: Given: The volume of water, V = 3 litres The pressure of water, P = 200 kPa The work done by paddle,…

Q: A closed, rigid tank contains 4 kg of air initially at 300 K, 1 bar. As illustrated in the figure…

A: Consider ΔU as the change in internal energy, Q as the heat, and W as the work. The kinetic energy…

Q: Carbon dioxide (CO₂) fills a closed, rigid tank fitted with a paddle wheel, initially at 80°F, 50…

Q: A cylinder-piston apparatus contains nitrogen initially at 20 bar, 107ºC and 0.3 m ^ 3. The piston…

A: Given: Initial condition of the nitrogen are: 20 bar, 107ºC and 0.3 m ^ 3 Final pressure of the…

Q: 434 An air-conditioning system is shown in Fig. P4.54 in which air flows over tubes carrying…

Q: A reaction which requires the input of thermal energy is called a

Q: Air is compressed in a piston-cylinder assembly from p₁=10 lb/in², T₁ = 500°R, V₁ = 9 ft³ to a final…

Q: 2 kg of water vapor in a piston-cylinder assembly expands at a constant pressure of 300 kPa (3.0…

A: The mass of water vapor is .The pressure is .The final volume is .

Q: The figure belows shows three components of an air-conditioning system, where T3 = 105°F and m3 =…

Q: One-quarter Ibmol of oxygen gas (O₂) undergoes a process from p₁ = 20 lb/in². T₁ = 500°R to p₂ = 150…

Q: Solve par d,e,f

A: d) 0.0455 kg/se) Waste heat transferred 8.3674 kw Compressor work input 2.9687 kW…

Concept explainers

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.

Question

A rigid tank of volume 0.5 m3 is initially evacuated. A tiny hole develops in the wall, and air from the
surroundings at 1 bar, 21° C leaks in . eventually, the pressure in the tank reaches 1 bar. The
process occurs slowly enough that heat transfer between the tank and the surroundings keeps the
temperature of the air inside the tank constant at 21° C. Determine the amount of heat transfer.
101.325 kJ
25 kJ
40 kJ
50 kJ

Expert Solution

This question has been solved!

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

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Trending now

This is a popular solution!

Step by step

Solved in 4 steps

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

Calculate the energy requirement to raise the temperature of 1 kg of water from 30 ° C of water to 100 ° C using the following approach; a. Average specific heat usage (Tab A Singh's Book 4.1) = Answer kJ. b. Enthalpy change in water-vapor saturation table (Singh's Book Tab A. 4.2) = Answer kJ.
pls answer the given
2. A piston-cylinder assembly with stops (see figure) contains 1.54 kg of water initially occupying a volume of 1.25 m at a pressure of 1 bar (State 1). As the water in the assembly is heated, the pressure and temperature in the system remain constant until the piston contacts the stops. In this position (State 2), the quality, x2, is determined to be 92%. Heat continues to be added to the system at a constant volume until the system reaches a pressure of 1.5 bar (State 3). Determine the following quantities: а. X b. V2 (m2) C. W13 (kJ) d. Qu (kJ) e. Plot the results on a P-v diagram, labelling relevant P, T, and v values.
A cylinder-piston apparatus contains 29 kg of air at 30°C. Weights on the piston fix the initial pressure at 20 bar. Find the work done if: a. Some of the weights are quickly removed until external pressure is 5 bar. The temperature remains constant. b. Some of the weights are slowly removed until the external pressure reaches 5 bar. The temperature remains constant. c. The expansion from 20 bar to 5 bar is polytropic, with an exponent of 1.4. Note that if the gas is ideal and PV = constant, then the temperature varies as: T₂ Tv 1-n P. n-1
Using 1st and 2nd law of thermodynamics for irreversible expansion of Krypton: Krypton (ideal monatomic gas) is confined in one-fourth of a 48-litre container. The other part of the container is evacuated. When the partition is removed, the gas expands and fills the whole container, while the system loses 400J of heat to the environment at 290K. It is found that in the final state, the Krypton is at p2 = 5.5bar, T2 = 400K. Is this process possible or not? (?k?????? = 83.8 kg/kmol)
Calculate the energy requirement to raise the temperature of 1 kg of water from 60 ° C of water to 90 ° C using the following approach; a. Average specific heat usage (Tab A Singh's Book. 4.1) = kJ b. The enthalpy change in the water - vapor saturation table (Tab A Singh's Book. 4.2) = kJ
3. Air is contained within a piston-cylinder assembly The cross sectional area of the piston is 0.01 m². Initially the piston is at 1 bar and 25°C, 10 cm above the base of the cylinder. In this state, the spring exerts no force on the piston. The system is then reversibly heated to 100°C. As the spring is compressed, it exerts a force on the piston according to: F=-kx where k= 50,000 N/m and x is the displacement length from its uncompressed position. Determine the work done. a. -166 J b. -216 J c. 166 J d. 216 J
2. A tank contains 1 kg mass gas whose density is 700 kg/m3. The pressure is increased from 1 bar to 3 bar. The approximate specific boundary work of the system is a. Cannot be find since some data is missingb. 285 kJ/kgc. 0 kJ/kgd. 0.285 kJ/kg
A 300-lb iron casting. initially at 600°F, is quenched in a tank filled with 2121 lb of oil, initially at 80°F. The iron casting and oil can be modeled as incompressible with specific heats 0.10 Btu/lb - °R. and 0.45 Btu/lb - °R, respectively. (a) For the iron casting and oil as the system.determine the final equilibrium temperature, in °F. Ignore heat transfer between the system and its surroundings. °F (b) For the iron casting and oil as the system,determine the amount of entropy produced within the tank, in Btu/°R. Ignore heat transfer between the system and its surroundings. Btu/°R
3 Filling an air tank A well-insulated air storage tank initially contains 0.03 kg of air at 320 K and 130 kPa. The tank is connected to a valve in order to charge the tank, as shown in Fig. 2. The valve is opened, allowing supply air at 2 MPa and 680 K to enter the tank. When the pressure of the air in the tank has reached 500 kPa, the valve is closed. Take C₂ = 1.005 kJ/kgK, C₂: 0.718 kJ/kgK, Te = 132 K, and P = 3.77 MPa. = (a) (b) (c) In this problem, we will assume air behaves like an ideal gas. Justify this under the specified conditions. Assuming constant specific heat capacities, find the final temperature of the air in the tank. Hence, calculate the entropy generated by this process by assuming constant specific heat capacities. Pline Tline = 2 MPa : 680 K = Valve m₁=0.03 kg air T₁ = 320 K P₁ = 130 kPa Pfinal = = 500 kPa
X Your answer is incorrect. A rigid tank whose volume is 4 m³, initially containing air at 1 bar, 295 K, is connected by a valve to a large vessel holding air at 6 bar, 295 K. The valve is opened only as long as required to fill the tank with air to a pressure of 6 bar and a temperature of 350 K. Assuming the ideal gas model for the air, determine the heat transfer between the tank contents and the surroundings, in kJ. Qev = i 88.08 eTextbook and Media Hint Save for Later kJ Attempts: unlimited 4 Submit Answer