4: Consider a vapor refrigeration cycle. a: Draw the T-s diagram of the reversed Carnot Cycle...

4: Consider a vapor refrigeration cycle.
a: Draw the T-s diagram of the reversed Carnot Cycle and describe what kind of problem each process of the cycle has explicitly. (We use the mixture of liquid and vapor as its working fluid.)
b: Draw a T-s diagram in the ideal refrigeration cycle and label each process explicitly. Write down the COP in terms of enthalpy.
c: There are the multipurpose refrigeration system and the multistage refrigeration system to improve the ideal refrigeration system. Describe their cycles in terms of the property diagrams explicitly and discuss the reasons why they are necessary.
d: Discuss the current status of existing refrigerants and describe how to resolve their problems explicitly.

Solutions

Expert Solution

b) ideal VCRS cycle:

c) Regeneration

Hello student I had solved your question such a huge solution please rate me thumbs up for the solution.

samet mamat answered 4 hours ago

Next > < Previous

Related Solutions

The figure below provides the T–s diagram of a Carnot heat pump cycle for which the...

The figure below provides the T–s diagram of a Carnot heat pump cycle for which the substance is ammonia, where x3 = 70%. Determine the net work input required, in kJ, for 50 cycles of operation and 0.1 kg of substance. Note that work is positive going into the heat pump.

Explain the Carnot engine cycle and plot its process on a) T-S diagram b) p-v diagram

15. A reversed Carnot engine (refrigeration unit) is used to maintain the temperature inside a freezer...

15. A reversed Carnot engine (refrigeration unit) is used to maintain the temperature inside a freezer at -34 oC. The room temperature in which the refrigeration unit operates is a constant 24 oC. If the motor on the refrigeration unit uses 0.3 kW, determine the rate at which heat is removed from the freezer in Watts. State your answer in whole numbers. Example: 2147 I WILL RATE YOU

There is a vapor compression type refrigeration cycle using the refrigerant HFC 134 a. In the...

There is a vapor compression type refrigeration cycle using the refrigerant HFC 134 a. In the condenser, it is isostatically cooled, the condensation temperature is 50 ° C., and the condenser outlet is the compressed liquid at 45 ° C. In the evaporator, it is isothermally heated, the evaporation temperature is 10 ° C. and the outlet of the evaporator is heated steam at 15 ° C. When the expansion valve performs isenthalpic expansion, and the adiabatic efficiency of the...

A normal refrigeration cycle uses one coolant, so why does vapor compression cycle of an ice...

A normal refrigeration cycle uses one coolant, so why does vapor compression cycle of an ice rink you a primary coolant and a secondary coolant?

Air within a piston cylinder assembly executes a Carnot refrigeration cycle between hot and cold reservoirs...

Air within a piston cylinder assembly executes a Carnot refrigeration cycle between hot and cold reservoirs at TH=500 K and TC=300 K, respectively. The magnitude of the heat transfer rejected to the high temperature reservoir is 250 kJ per kg of air. The pressure at the start of the isothermal expansion is 325 kPa. The air can be modeled as an ideal gas with constant specific heat. For the air as a system, determine a. (5) the coefficient of performance....

A mole of an ideal gas goes through a cycle of a Carnot engine. Draw the...

A mole of an ideal gas goes through a cycle of a Carnot engine. Draw the pressure vs volume and entropy vs temperature planes for this cycle. What do the diagrams look like when the efficiency of the cycle is 50% and 99%. Then Calculate the work done per cycle by the gas and find the efficiency of the cycle.

A vapor-compression refrigeration cycle working with R22 contains a liquid-to-suction heat exchanger.

A vapor-compression refrigeration cycle working with R22 contains a liquid-to-suction heat exchanger. The saturated liquid refrigerant at 40 ℃ leaving the condenser and enteringthe heat exchanger is used to superheat the saturated vapor refrigerant leaving the evaporator at 7 ℃ by 8 ℃. If the compressor is capable of pumping 5 1/s of vapor refrigerant measuredat the inlet to the compressor and the compression processes are considered isentropic in both cases listed below, determine; (a) The refrigerating capacity in kW,...

An ideal vapor compression refrigeration cycle using r134a as the refrigerant is being used to cool...

An ideal vapor compression refrigeration cycle using r134a as the refrigerant is being used to cool a house. It provides 3 refrigeration tons ≈ 10.5kW of cooling (heat removal from the house air). The refrigerant in the evaporator operates at 400kPa while in the condenser it is at 1000kPa. Treat the surroundings as a thermal reservoir at 33◦C and the air in the house as a thermal reservoir at 19◦C. All reservoirs are at 100kPa. 1. What is the COPr...

An ideal vapor compression refrigeration cycle with R134a as the working fluid operates between the pressure...

An ideal vapor compression refrigeration cycle with R134a as the working fluid operates between the pressure limits of 200 kPa and 1200 kPa. Determine a) the mass fraction of the refrigerant that is in the liquid phase at the inlet of the evaporator, and b) the amount of heat transfer (in kJ/kg) to the refrigerant in the evaporator (??).

Subjects