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A spring loaded piston-cylinder device with a cross sectional area of 0.2 m2 contains 0.6 kg...
Problem 2 A spring-loaded piston-cylinder device contains 1 kg of carbon dioxide that is initially at...
Problem 2 A spring-loaded piston-cylinder device contains 1 kg of carbon dioxide that is initially at 100 kPa and 25°C (State 1). Heat is added until the gas reaches 800°C, at which point the pressure is 300 kPa (State 2) (a) Determine the boundary work (kJ) done by the CO2. Assume the spring is linear. (b) Determine the amount of heat transfer (kJ) into the CO2. Data for CO2: R = 0.1889 kJ/(kg K), Cpo = 0.846 kJ/(kg K), Cvo...
A piston-cylinder assembly initially contains 0.8 kg of air at 100 kPa and 300 K. It...
A piston-cylinder assembly initially contains 0.8 kg of air at 100 kPa and 300 K. It is then compressed in a polytropic process PV3 = C to half the original volume. Assuming the ideal gas model for air and specific heat ratio is constant, k=1.4, determine (a) the final temperature, (b) work and heat transfer, each in kJ. R= 0.287 kJ/kg K. W, 82
(4 points) Steam A spring-loaded piston cylinder initially contains 4.2 kg of steam at 120° C...
(4 points) Steam A spring-loaded piston cylinder initially contains 4.2 kg of steam at 120° C and with a quality of 50%. The device is heated until the pressure of the steam is 500 kPa and the temperature is 200° C. Determine the boundary work done by the steam during this process. 0 kJ Determine the total heat transferred during this process. 0 kJ
3.13 A two step process for a control mass A piston/cylinder device contains 0.2 kg water at 1000...
I don't solve this problem(please write your text
clearly)
3.13 A two step process for a control mass A piston/cylinder device contains 0.2 kg water at 1000 kPa, 300°C. There is a constant force on the piston with stops mountedSo a minimum volume is 0,025 m, if is now cooled to 100°C. Find the final water volume, the Work and heat transfer in the overall process and show the process in P-v and T-v diagrams. ywork and heat transfer in...
An insulated piston-cylinder device contains 0.1m3 of air (ideal gas) at 400 kPa and 25℃. A...
An insulated piston-cylinder device contains 0.1m3 of air (ideal gas) at 400 kPa and 25℃. A paddle wheel within the cylinder is rotated until 15 kJ of work is done on the air while the pressure is held constant. Assuming the kinetic and potential energies are negligible and the gas constant and specific heat of air are ? = 0.287 kJ kg∙K and ?? = 1.005 kJ kg∙K . Tasks: ( a ) Determine the mass of air inside the...
QUESTION 24 A piston-cylinder device contains 50 kg of water at 250 kPa and 25 degree...
QUESTION 24
A piston-cylinder device contains 50 kg of water at 250 kPa and 25 degree C. The cross-sectional area of the piston is 0.1 m2. Heat is now transferred to the water, causing part of it to evaporate and expand. When the volume reaches 0.2 m3 the piston reaches a linear spring whose spring constant is 100 kN/m. More heat is transferred to the water until the piston rises 20 cm more. Determine (a) the final pressure and temperature...
A piston–cylinder device initially contains air at 150 kPa and 27 °C. In this state, the...
A piston–cylinder device initially contains air at 150 kPa and 27 °C. In this state, the piston is resting on a pair of stops, and the enclosed volume is 400 litres. The mass of the piston is such that a 200 kPa pressure is required to move it. The air is now heated until its volume has doubled. Sketch the process on a P-V diagram and determine (a) the mass of air and the final temperature, (b) the work done...
5. Air expands isothermally constant temperature) in a closed, piston-cylinder device. The original state is given...
5. Air expands isothermally constant temperature) in a closed, piston-cylinder device. The original state is given by pı = 20 MPa, T = 1000 K. the process continues until the pressure drops to 2 MPa. The original volume of the air is V1 = 1 m². Determine the following: a. the mass of the air in the system, in kg. b. the final density of the air, in kg/m". Remember, Rair = 0.287 kJ/kg-K c. the final volume of the...
A frictionless piston-cylinder device contains 0.2 kg of air at 100 kPa and 27°C. The air...
A frictionless piston-cylinder device contains 0.2 kg of air at 100 kPa and 27°C. The air is now compressed slowly according to the relation P Vk = constant, where k = 1.4, until it reaches a final temperature of 77°C. Sketch the P-V diagram of the process with respect to the relevant constant temperature lines, and indicate the work done on this diagram. Using the basic definition of boundary work done determine the boundary work done during the process [-7.18...
Homework 2 Problem 1: A piston-cylinder device initially contains 0.35-kg steam at 3.5 MPa, superheated by...
Homework 2 Problem 1: A piston-cylinder device initially contains 0.35-kg steam at 3.5 MPa, superheated by 7.4 C. Now the stream loses heat to the surroundings and the piston moves down, hitting a set of stops at which point the cylinder contains saturated liquid water. The cooling continues until the cylinder contains water at 200C. Determine (a) the final pressure and the quality (if mixture), (b) the boundary work, (c) the amount of heat transfer when the piston first hits...
Problem 2 A spring-loaded piston-cylinder device contains 1 kg of carbon dioxide that is initially at 100 kPa and 25°C (State 1). Heat is added until the gas reaches 800°C, at which point the pressure is 300 kPa (State 2) (a) Determine the boundary work (kJ) done by the CO2. Assume the spring is linear. (b) Determine the amount of heat transfer (kJ) into the CO2. Data for CO2: R = 0.1889 kJ/(kg K), Cpo = 0.846 kJ/(kg K), Cvo...
A piston-cylinder assembly initially contains 0.8 kg of air at 100 kPa and 300 K. It is then compressed in a polytropic process PV3 = C to half the original volume. Assuming the ideal gas model for air and specific heat ratio is constant, k=1.4, determine (a) the final temperature, (b) work and heat transfer, each in kJ. R= 0.287 kJ/kg K. W, 82
(4 points) Steam A spring-loaded piston cylinder initially contains 4.2 kg of steam at 120° C and with a quality of 50%. The device is heated until the pressure of the steam is 500 kPa and the temperature is 200° C. Determine the boundary work done by the steam during this process. 0 kJ Determine the total heat transferred during this process. 0 kJ
I don't solve this problem(please write your text
clearly)
3.13 A two step process for a control mass A piston/cylinder device contains 0.2 kg water at 1000 kPa, 300°C. There is a constant force on the piston with stops mountedSo a minimum volume is 0,025 m, if is now cooled to 100°C. Find the final water volume, the Work and heat transfer in the overall process and show the process in P-v and T-v diagrams. ywork and heat transfer in...
QUESTION 24
A piston-cylinder device contains 50 kg of water at 250 kPa and 25 degree C. The cross-sectional area of the piston is 0.1 m2. Heat is now transferred to the water, causing part of it to evaporate and expand. When the volume reaches 0.2 m3 the piston reaches a linear spring whose spring constant is 100 kN/m. More heat is transferred to the water until the piston rises 20 cm more. Determine (a) the final pressure and temperature...
5. Air expands isothermally constant temperature) in a closed, piston-cylinder device. The original state is given by pı = 20 MPa, T = 1000 K. the process continues until the pressure drops to 2 MPa. The original volume of the air is V1 = 1 m². Determine the following: a. the mass of the air in the system, in kg. b. the final density of the air, in kg/m". Remember, Rair = 0.287 kJ/kg-K c. the final volume of the...
Homework 2 Problem 1: A piston-cylinder device initially contains 0.35-kg steam at 3.5 MPa, superheated by 7.4 C. Now the stream loses heat to the surroundings and the piston moves down, hitting a set of stops at which point the cylinder contains saturated liquid water. The cooling continues until the cylinder contains water at 200C. Determine (a) the final pressure and the quality (if mixture), (b) the boundary work, (c) the amount of heat transfer when the piston first hits...
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