In an isobaric compression process, the volume of steam is reduced from 1 Mpa and 773 kelvin to saturated vapour. determine the work done to reduce the volume and the heat transfer in the system
In an isobaric compression process, the volume of steam is reduced from 1 Mpa and 773...
consider a piston-cylinder assembly that operate in isobaric process. steam undergoes the process from 400C to reach 900C. Select two different values of pressure in the range of 5 to 20 MPa at which the preocess is undergoing and subsequently plot the heat transfer (kJ/kg) as a function of the chosen pressure values. Consider a piston-cylinder assembly that operates in isobaric process. Steam undergoes the process from 400 °C to reach 900 °C. Select two different values of pressure in...
Question 1 Consider a piston-cylinder assembly that operates in isobaric process. Steam undergoes the process from 400 °C to reach 900 °C. Select two different values of pressure in the range of 5 to 20 MPa at which the process is undergoing and subsequently plot the heat transfer (kJ/kg) as a function of the chosen pressure values.
Question 1 Consider a piston-cylinder assembly that operates in isobaric process. Steam undergoes the process from 400 °C to reach 900 °C. Select two different values of pressure in the range of 5 to 20 MPa at which the process is undergoing and subsequently plot the heat transfer (kJ/kg) as a function of the chosen pressure values. [10 MARKS]
In an isobaric process, 1 litre of compressed liquid water at p 10 MPa, T 40°C is heated to saturated liquid state (State 2), then evaporated to saturated vapor state (State 3), and then further heated to T4-450°C. Determine temperature, pressure, specific volume, internal energy, enthalpy and entropy in the four states; collect the data in a table. Then determine the work and the heat for the process. For state 1, also use the approximation based on saturation data to...
A piston - cylinder device contains 0.15 kg of steam at 1 MPa and 320 degree C. The steam now expand to a final state of 150 kPa and 160 degree C. Energy losses via heat transfer from system to surroundings are estimated to be 3KJ, while the contact temperature with the surroundings is 25 degree C.Assuming: T0=25c and P0=100kPa,Determine: A: the available energy of the steam at the initial and final states B: the work done by the system...
A compressor operating with 17.1 kg/s water vapour with a compression ratio (P2/P1) equal to 3.0 is cooled down by means of a cooling system which extracts 58 kJ/kg of heat (per unit mass of fluid) from the device. The steam enters the compressor under saturated conditions at 1.5 MPa and leaves it at 773 K. Calculate the power required if the compressor operates with an efficiency of 0.97. Give your answer in MW to 1 decimal place
A piston–cylinder device contains 2 kg of air initially at 90 kPa and 30°C. The air is now compressed slowly in a process during which PV k = constant until the volume is reduced by one-half. If the exponent k characterizing the compression process is the specific heat ratio of the air for the average operating temperatures (Table A-2b), the net heat transfer for the process is expected to be zero (adiabatic). Determine the work done and show that 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...
Air in a piston-cylinder undergoes a cycle with the following processes: Process 1-2: Isobaric process from P = 0.1 MPa, T1 = 600K to T2 = 1200K Process 2-3: Isothermal process to state 3 where P3 = 0.05 MPa Process 3-4: Isochoric process to state 4 where P4 = 0.031 MPa Process 4-1: Polytropic process back to state 1 (a) Show the processes in a P-V plot showing the values. Also calculate or state the values of P. V. T...
1. A piston-cylinder device contains steam initially at 1.2 MPa, 500°C, and 2.8 m' Steam is al to cool at constant pressure until it first starts condensing (a) Show the process on a saturation lines and determine (b) the mass of the steam, (e) the final diagrams with respect to temperature, and (d) the amount of heat and work transfer (25 marks) 1. A piston-cylinder device contains steam initially at 1.2 MPa, 500°C, and 2.8 m' Steam is al to...