Hi please show calculations or diagrams if required thank you To understand the mathematical expression for a thermodynamic cycle you must calculate the index of compression in polytrophicprocesses (M1) where a fluid at 0.7 bar occupying 0.09m3 is compressed revels to a pressure of 3.5 bar according to a law PVa =constant. The fluid is then heated reversibly at the constant volume until the pressure is 4 bar, the specific volume is then 0.5 m³/kg. Areversible expansion according to a law PV1.3 = C restores the fluid to its initial state.BoundaryQinWBoilerTurbineQoutCondenserFeedpumpWinBoundaryFigure 1.2

Consider below P-V diagram to understand different states. From the data given in question, P1 =…

To understand the mathematical expression for a thermodynamic cycle you must calculate the index of compression in polytrophic processes (M1) where a fluid at 0.7 bar occupying 0.09m³ is compressed revels to a pressure of 3.5 bar according to a law PV: = constant. The fluid is then heated reversibly at the constant volume until the pressure is 4 bar, the specific volume is then 0.5 m³/kg. A reversible expansion according to a law PV1.3 = C restores the fluid to its initial state. Boundary Qin Boiler Turbine Qon Condenser Feed pump W Boundary Figure 1.2

To understand the mathematical expression for a thermodynamic cycle you must calculate the index of compression in polytrophic processes (M1) where a fluid at 0.7 bar occupying 0.09m³ is compressed revels to a pressure of 3.5 bar according to a law PV: = constant. The fluid is then heated reversibly at the constant volume until the pressure is 4 bar, the specific volume is then 0.5 m³/kg. A reversible expansion according to a law PV1.3 = C restores the fluid to its initial state. Boundary Qin Boiler Turbine Qon Condenser Feed pump W Boundary Figure 1.2

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

Similar questions

An electronic chip is working, and its outer surface is cooled convectively by a fan. The heat-transfer coefficient, h, is 100W/(m^2∙K), and the total surface area of the chip, A, is 5 cm^2. We also know the temperature of the cooling air, Tb, is 25 C, and the temperature of the chip, Ts, is 75 C. The whole system of the chip is in steady state. Please determine 1) the energy transfer rate, ???? , in W; 2) the heat transfer rate, ?̇ in W; and 3) the power of the chip, ?̇ , in W.
The following processes occur in a reversible thermodynamic cycle: 1-2: 0.2 kg heating at constant pressure 1.05 bar at specific volume 0.1 m3/kg and work done -515 J. 2-3: Isothermal compression to 4.2 bar. 3-4: Expansion according to law pv1.7= constant. 4-1: heating at constant volume back to the initial conditions. Calculate the net work done in joules?
A reversible power cycle whose thermal efficiency is 50% operates between a reservoir at 1800 K and a reservoir at a lower temperature T. Determine T, in K.
As shown in the figure, an air conditioner operating at steady state maintains a dwelling at 70°F on a day when the outside temperature is 90°F. The rate of heat transfer into the dwelling through the walls and roof is 30,000 Btu/h and the net power input to the air conditioner compressor is 3 hp. Determine a. the coefficient of performance for the air conditioner b. power input required in hp c. coefficient of performance for a reversible air conditioner providing the same cooling effect while operating between the same cold and hot temperatures.
1.Two kilograms of air within a piston–cylinder assembly execute a Carnot power cycle with maximum and minimum temperatures of 750 K and 300 K, respectively. The heat transfer to the air during the isothermal expansion is 60 kJ. At the end of the isothermal expansion, the pressure is 600 kPa and the volume is 0.4 m3 . Assuming the ideal gas model for the air, determine (a) the thermal efficiency. (b) the pressure and volume at the beginning of the isothermal expansion, in kPa and m3 , respectively. (c) the work and heat transfer for each of the four processes, in kJ. (d) Sketch the cycle on p–V coordinates.
As shown in the figure below, two reversible cycles arranged in series each produce the same net work, Wcycle. The first cycle receives energy QH by heat transfer from a hot reservoir at TH = 1500°R and rejects energy Q by heat transfer to a reservoir at an intermediate temperature, T. The second cycle receives energy Q by heat transfer from the reservoir at temperature T and rejects energy QC by heat transfer to a reservoir at TC = 450°R. All energy transfers are positive in the directions of the arrows. Determine:(a) the intermediate temperature T, in °R, and the thermal efficiency for each of the two power cycles.(b) the thermal efficiency of a single reversible power cycle operating between hot and cold reservoirs at 1500°R and 450°R, respectively. Also, determine the ratio of the net work developed by the single cycle to the net work developed by each of the two cycles, Wcycle.
Gaseous nitrogen actuates a Carnot power cycle in which the respective volumes at thefour corners of the cycle, starting at the beginning of the isothermal expansion, are V 1 =10.10, V 2 = 14.53, V 3 = 226.54, V 4 = 157.73 liter, what is the thermal efficiency of thecycle? k=1.399
Two reversible cycles are in series, each process doing the same net work, Wcycle. The first cycle receives energy QH by heat transfer from a hot reservoir at 1000°R and energy Q is reinjected by heat transfer to a reservoir at an intermediate temperature, T. The second cycle receives energy Q by heat transfer from the reservoir at temperature T and reinjects the QC energy by heat transfer to the reservoir at a temperature of 400°R. All energy transferred is positive in the direction of the arrow. Determine: a) the intermediate temperature T, in °R, and the thermal efficiency for each of the two cycles; b) the thermal efficiency of a simple reversible cycle operating between the hot and cold reservoirs at 1000°R and 400°C, respectively. Then determine the net work done by the simple cycle, expressed in terms of the net work done by each of the two cycles, Wcycle.
THERMOFLUID Consider a gas undergoing a thermodynamic cycle consisting of three processes from an initial state at P1 = 100 kPa , V1 = 0.81 m3. Process 1 - 2 : constant pressure compression work of 65 kJ,Process 2 – 3 : constant volume heating of 2600 kJ, andProcess 3 – 1 : isothermal expansion. a) Sketch the cycle on a clearly labelled P-V diagram and write appropriate First Law equations for all the three processes. Neglect the changes in kinetic energy and potential energy.
THERMOFLUID Consider a gas undergoing a thermodynamic cycle consisting of three processes from an initial state at P1 = 100 kPa , V1 = 0.81 m3.Process 1 - 2 : constant pressure compression work of 65 kJ,Process 2 – 3 : constant volume heating of 2600 kJ, andProcess 3 – 1 : isothermal expansion. a) Sketch the cycle on a clearly labelled P-V diagram and write appropriate First Law equations for all the three processes. Neglect the changes in kinetic energy and potential energy. b) Determine the:i. volume at the end of constant pressure compression, ii. net work for the thermodynamic cycle, and iii. heat transfer during constant pressure compression.
The displacement volume of an internal combustion engine is 2.15 liters. The processes within each cylinder of the engine are modeled as an air-standard Diesel cycle with a cutoff ratio of 2.5. The state of the air at the beginning of compression is fixed by p1 = 1.6 bar, T1 = 325 K and V1 = 2.36 liters. If the cycle is executed 2100 times per min, determine:d) the power developed by the engine, in kW,e) and the thermal efficiency.
During transient state operation, a gearbox receives 60 kW through the input shaft and delivers power through the output shaft. For the gearbox as the system, the rate of energy transfer by convection isQ T = −hA (Tb – Tf)where h = 0.171 kW/m 2 ⋅⋅ K is the heat transfer coefficient, A = 1.0 m 2 is the outer surface area of the gearbox, Tb = 300 K (27°C) is the temperature at the outer surface, and Tf = 293 K (20°C) is the temperature of the surrounding air away from the immediate vicinity of the gearbox. The rateof specific internal energy is 5kJ/Kg. For the gearbox, evaluate the heat transfer rate and the power delivered through the output shaft, each in kW.