How does the COP of a cascade refrigeration system compare to the COP of a simple...
How does the COP of a cascade refrigeration system compare to the COP of a simple vapor compression cycle operating between the same pressure limits?
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How does the COP of a cascade refrigeration system
compare to the COP of a simple...
1. Compare between, single simple refrigeration cycle, two-stage cascade refrigeration cycle, and a two-stage compression refrigeration...
1. Compare between, single simple refrigeration cycle, two-stage cascade refrigeration cycle, and a two-stage compression refrigeration cycle with a flash chamber all between both between same pressure limits.
solve it carefully please air condition & refrigerator refrigeration system operating between pressure limits of 0.8...
solve it carefully please
air condition & refrigerator
refrigeration system operating between pressure limits of 0.8 stage operates on an ideal vapor compression refrigeration cycle with 2. Consider a 2 stage cascade and 0.14 MPa. Each R-134a as refrigerant. Heat rejection from the lower cycle to the upper cycle takes place in an adiabatic counter flow heat exchanger where both streams enter at about 0.32 MPa. If the mass flow rate of the refrigerant through the upper cycle is 0.05...
A two-stage cascade refrigeration system operates between the pressure limits of 1.4MPa and 200 kPa with...
A two-stage cascade refrigeration system operates between the pressure limits of 1.4MPa and 200 kPa with refrigerant-134a. The fluid leaves the condenser as a saturated liquid and is throttled to a flash chamber operating at 0.50 MPa. Part of the refrigerant evaporates in the flashing process, and this vapor is mixed with the refrigerant leaving the low-pressurin compressor. The liguid in the flash chamber iS throttled to the evaporator pressure and cools the refrigerated space. The mass flow rate of...
Consider a two-stage cascade refrigeration system operatingbetween the pressure limits of 0.8 and 0.14 MPa....
Consider a two-stage cascade refrigeration system operating
between the pressure limits of 0.8 and 0.14 MPa. Each stage
operates on the ideal vapor-compression refrigeration cycle with
refrigerant-134a as the working fluid. Heat rejection from the
lower cycle to the upper cycle takes place in an adiabatic
counterflow heat exchanger where both streams enter at about 0.55
MPa. The mass flow rate of the refrigerant through the upper cycle
is 0.24 kg/s(a) Illustrate the two-stage cascade refrigeration
cycle on both a...
A 100-ton refrigeration system operates on the simple vapor compression refrigeration system with R-22 as the...
A 100-ton refrigeration system operates on the simple vapor compression refrigeration system with R-22 as the working fluid. The evaporator pressure is 2 bar and the condenser pressure is 30 bar. The refrigerant leaves the compressor at 160oC. 1 ton of refrigeration = 3.517 kW Determine the cooling load, in kW. Plot all five points (1, 2s, 2a, 3, 4) on the P-h diagram. Determine the power consumed by the refrigeration system, in kW. Determine the COP of the system. Isentropic efficiency...
5-6 Figure 5-6 shows the schematic diagram for a two-stage cascade refrigeration system. Each stage operates...
5-6 Figure 5-6 shows the schematic diagram for a two-stage cascade refrigeration system. Each stage operates on an ideal vapor-compression refrigeration cycle with refrigerant- 134a as the working fluid. All the important data and refrigerant phases are given in the schematic diagrams. By referring to the diagrams, determine: (a) The ratio of mass flow rate of the system and draw a T-s diagram complete with the data given. Enthalpy values for each states. Compressor power input for Cycle A and...
refrigeration system is required to supply 20 tons of refrigeration at an evaporator Qi: A cascade enerature of -50...
refrigeration system is required to supply 20 tons of refrigeration at an evaporator Qi: A cascade enerature of -50 °C and a condenser temperature of 40 °C. The load at 50 Cbedby unit using as the refrigerant and is rejected to a cascade condenser at -10 C. This cascade condenser is cooled by R-12 as the refrigerant and operating between -25 °C evaporating temperatures and 40 ec unit using The refrigerant leaving the R-12 condenser is sub-cooled by 5 °C...
Consider a cascade system that uses vapor compression refrigeration for both high and low temperature cycles....
Consider a cascade system that uses vapor compression refrigeration for both high and low temperature cycles. Saturated vapor ammonia enters the compressor in the low temperature cycle at 20 psi and exits at 90 psi as it enters the heat exchanger. R134a enters the compressor in the high temperature cycle at 20oF and a quality of 0.84, and exits at 120 psi as it enters the high temperature condenser. Given a refrigeration capacity of 10 tons, determine: Ratio of the...
30° Condenser 32° 2 3 Expansion Q4/ a) Determining the coefficient of performance (COP) of a...
30° Condenser 32° 2 3 Expansion Q4/ a) Determining the coefficient of performance (COP) of a vapor compression refrigeration and COP for the heat pump cycle, if the low pressure is 3 bar, high pressure is 6.5 bar. (5 Marks) b) Draw the cycle on the attached chart. (4 Marks) c) Discuss why we observed the difference between temperatures 2 and 3, and between 1 and 2 at the same test. (5 Marks) valve Compressor Evaporator 2 O,
Problem 2 (30 pts): Consider a two-stage vapor-compression refrigeration system operating between the pressure limits of...
Problem 2 (30 pts): Consider a two-stage vapor-compression refrigeration system operating between the pressure limits of 1.5 MPa and 150 kPa with refrigerant-134a as the working fluid. The refrigerant leaves the condenser as a saturated liquid and is throttled to a flash chamber operating at 0.45 MPa. The mass flow rate of the refrigerant through the low pressure compressor is 0.15 kg/s. Assuming the refrigerant leaves the evaporator as a saturated vapor, determine (a) the mass flow rate of the...
1. Compare between, single simple refrigeration cycle, two-stage cascade refrigeration cycle, and a two-stage compression refrigeration cycle with a flash chamber all between both between same pressure limits.
solve it carefully please
air condition & refrigerator
refrigeration system operating between pressure limits of 0.8 stage operates on an ideal vapor compression refrigeration cycle with 2. Consider a 2 stage cascade and 0.14 MPa. Each R-134a as refrigerant. Heat rejection from the lower cycle to the upper cycle takes place in an adiabatic counter flow heat exchanger where both streams enter at about 0.32 MPa. If the mass flow rate of the refrigerant through the upper cycle is 0.05...
A two-stage cascade refrigeration system operates between the pressure limits of 1.4MPa and 200 kPa with refrigerant-134a. The fluid leaves the condenser as a saturated liquid and is throttled to a flash chamber operating at 0.50 MPa. Part of the refrigerant evaporates in the flashing process, and this vapor is mixed with the refrigerant leaving the low-pressurin compressor. The liguid in the flash chamber iS throttled to the evaporator pressure and cools the refrigerated space. The mass flow rate of...
5-6 Figure 5-6 shows the schematic diagram for a two-stage cascade refrigeration system. Each stage operates on an ideal vapor-compression refrigeration cycle with refrigerant- 134a as the working fluid. All the important data and refrigerant phases are given in the schematic diagrams. By referring to the diagrams, determine: (a) The ratio of mass flow rate of the system and draw a T-s diagram complete with the data given. Enthalpy values for each states. Compressor power input for Cycle A and...
refrigeration system is required to supply 20 tons of refrigeration at an evaporator Qi: A cascade enerature of -50 °C and a condenser temperature of 40 °C. The load at 50 Cbedby unit using as the refrigerant and is rejected to a cascade condenser at -10 C. This cascade condenser is cooled by R-12 as the refrigerant and operating between -25 °C evaporating temperatures and 40 ec unit using The refrigerant leaving the R-12 condenser is sub-cooled by 5 °C...
30° Condenser 32° 2 3 Expansion Q4/ a) Determining the coefficient of performance (COP) of a vapor compression refrigeration and COP for the heat pump cycle, if the low pressure is 3 bar, high pressure is 6.5 bar. (5 Marks) b) Draw the cycle on the attached chart. (4 Marks) c) Discuss why we observed the difference between temperatures 2 and 3, and between 1 and 2 at the same test. (5 Marks) valve Compressor Evaporator 2 O,
Problem 2 (30 pts): Consider a two-stage vapor-compression refrigeration system operating between the pressure limits of 1.5 MPa and 150 kPa with refrigerant-134a as the working fluid. The refrigerant leaves the condenser as a saturated liquid and is throttled to a flash chamber operating at 0.45 MPa. The mass flow rate of the refrigerant through the low pressure compressor is 0.15 kg/s. Assuming the refrigerant leaves the evaporator as a saturated vapor, determine (a) the mass flow rate of the...
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