The coefficient of performance for a heat pump is defined as K = -It is a measure of how effective the pump is at extracting heatW(Qin), as compared to the amount of work needed to extract the heat (W]). What is the coefficient of performance for this heat pump? A diatomic ideal gas (y = 1.4) undergoes a thermodynamic cycle involving an isobaric contraction, followed by an isothermicexpansion and lastly an adiabatic contraction. This would act as a heat pump that uses work to extract heat from one area and move itto another (e.g. a refrigerator). The PV diagram for this cycle is shown in the image below.VThe isobaric process occurs at a pressure of 197600 Pa. The isothermic expansion increases the volume of the gas from5.56 x 10 2 m³ to 9.85 x 10 2 m³.How much work is done on the gas for each cycle?J

Answered: Image /qna-images/answer/7dc2fad7-b019-407c-8a5b-c623c7d1da32.jpg

diatomic ideal gas (7 = 1.4) undergoes a thermodynamic cycle involving an isobaric contraction, followed by an isothermic xpansion and lastly an adiabatic contraction. This would act as a heat pump that uses work to extract heat from one area and move it o another (e.g. a refrigerator). The PV diagram for this cycle is shown in the image below.

diatomic ideal gas (7 = 1.4) undergoes a thermodynamic cycle involving an isobaric contraction, followed by an isothermic xpansion and lastly an adiabatic contraction. This would act as a heat pump that uses work to extract heat from one area and move it o another (e.g. a refrigerator). The PV diagram for this cycle is shown in the image below.

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

The working gas of a thermodynamic cycle is a diatomic gas (assume constant specific heats.) The gas originally starts at 100kPa, 4m 3 and 27° C. It undergoes a four-step process --- • Process A-B: The gas is compressed at constant temperature to one-quarter of its original volume. • Process B-C: The volume of the gas is then doubled at constant pressure. • Process C-D: The gas then undergoes an adiabatic expansion. • Process D-A: The gas then undergoes a constant volume process back to its original state a) Make a table of the temperature, pressure, volume, internal energy, enthalpy, entropy and quality factor (T, P, V, U, H & S) at the start of each process. b) Make a table of the change in internal energy, heat flow, work done, change in enthalpy, and change in entropy (AU, Q, W, AH & AS) during each leg of the cycle. c) Draw well-labelled P-V & T-S diagrams (indicating lines of constant temperature, heat flow, work, etc.) d) Calculate the thermal efficiency of the cycle.
1 mol of an ideal gas initially at 300 K and 1 bar undergoes a three-step mechanically reversible cycle in a closed system. In step 12, pressure increases isothermally to 5 bar; in step 23, pressure increases at constant volume; and in step 31, the gas returns adiabatically to its initial state. Take CP = (7/2)R and CV = (5/2)R. (a) Sketch the cycle on a PV diagram. (b) Determine (where unknown) V, T, and P for states 1, 2, and 3. (c) Calculate Q, W, ΔUt, and ΔHt for each step of the cycle
An ideal gas undergoes a reversible clockwise cycle shown in Fig 1c.i (from state P1, V1 back state P1, V1). What work is done on the gas in this cycle? What work is done on the gas if this cycle travels anticlockwise? (P1, V,) (P, V2) (P2, V;) (P,, V2) V Figure 1c.i If P = 2.0 x 105 Pa, P2 = 1.0 x 105 Pa, V, = 1.0 x 10-3 m3 and V2 = 2.0 x 10-3 m³, how much work is done on the gas in traversing the cycle clockwise 50 times? P.
As shown in the figure, Refrigerant 22 enters the compressor of an air conditioning unit operating at steady state at 40°F, 80 lbp/in² and is compressed to 160°F. 200 lb/in?. The refrigerant exiting the compressor enters a condenser where energy transfer to air as a separate stream occurs, and the refrigerant exits as a liquid at 200 lb/in², 90°F. Air enters the condenser at 75°F, 14.7 lb/in² with a volumetric flow rate of 1000 ft3/min and exits at 110°F. Neglect stray heat transfer and kinetic and potential energy effects, and assume ideal gas behavior for the air. Step 1 Compresser 1+R22 Hint Step 2 mg22 = 7.026 7-11 wwwww www Wa= 7₂=160 F P-200 7₁-4FF P-80² Your answer is correct. Determine the mass flow rate of refrigerant, in lb/min. Determine the mass flow rate of refrigerant, in lb/min, and the compressor power, in horsepower. * Your answer is incorrect. 2.125 -Condemer lb/min Determine the compressor power, in horsepower. Aus at T P 1471² (AV) 7₁-90°F Py = 200 m² hp P == 300…
Give solution to the thermodynamics problem.
Q2 a) For the Desal cycle, draw p-v and T-s diagrams and explain all thermodynamic processes of the cycle. Explain the work done and efficiency of the Desal cycle. b) Define the compression ratio and explain your answer by supported formula.
3) A three-process cycle uses 3 kg of air and undergoes the following processes: polytropic compression from state 1 to state 2, where 150 kPa, 3600K, 750 kPa, and n=1.2; constant-pressure cooling from state 2 to state 3; and constant-temperature heating from state 3 to state 1, thus completing the cycle. Sketch the cycle on a p-V and T-s diagrams and determine the total heat and net work of the cycle.
An engine has the Lenoir thermodynamic cycle as shown in the figure. Given: 1 mol of ideal gas CP,m = 3.5 R P1 = 2 atm ; P2 = 5 atm V1 = 3000 cm3 ; V3 = 6000 cm3 Find the following: Temperature at (P1, V1), (P2, V2), and (P2, V1) QH and Qc (Note; QH comes from Process 1->2; Proces 2-3 is considered isentropic efficiency of the engine
Please explain each step
stream? Q2/ An ideal gas initially at 600 K and 10 bar undergoes a four step mechanically reversible cycle in a closed system. In step 1-2, pressure decreases isothermally to 3 bar; in step 2-3, pressure decreases at constant volume to 2 bar; in step 3-4, volume decreases at constant pressure; and in step 4-1, the gas returns adiabatically to its initial state. Assum C₂=(7/2) R and C₂ = (5/2) R. Calculate Q, W, AU, and 4H for each step of the cycle?
Identify the name of the law relates with isothermal process Select one: O a. Gay-Lussac Law O b. Fourier Law O C. Boyles Law O d. Charles Law
Hi I need help with parts of a thermo practice problem 2 kg of air in a piston cylinder initially at P1=101 kPa, T1= 300 K undergoes a cycle made up of three processes: 1-2 Isothermal compression until the volume is (1/15) of its original value.2-3 Constant Pressure heating3-1 Isentropic Expansion back to the initial state Assume air is an ideal gas with constant specific heats with the following values: Cpo=1.027kJ/kgK; Cvo= 0.740 kJ/kgK; R=0.287 kJ/kgK; ɣ=1.388 Fill in the processes table below and show all work.