Refrigeration system operates on a vapor-compression cycle with R-134a as theworking fluid. The refrigerant enter the compressor as superheated vapor at 0.1 Mpa andis compressed to 1 Mpa. If the isentropic efficiency of the compressor is 0.80and thesuperheat and subcooling are 10 C°. Mass flow rate of refrigerant is 0.05 kg/s.Determine QeQ, W & C.O.P

To solve this problem, we need to determine the key properties and energy transfers in a…

Answered: Refrigeration system operates on a…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

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Saturated vapor R22 refrigerant leaves the evaporator and enters the compressor at 131.68kPa. The refrigerant leaves the condenser as a saturated liquid at 40oC and enters theexpansion valve at 36oC. Heat rejected from the condenser amount to 105 kW. The work tothe compressor is 65 kJ/kg, while the heat loss from the compressor is 5.5 kJ/kg. A 7.4 kJkgof heat loss in piping between the compressor and condenser, Draw the p-h diagram(labeling the pressures and temperatures in each condition). Determine (a) the temperatureof refrigerant entering the condenser and (b) calculate the refrigeration capacity in tons.
The evaporator and condenser is isobaric with a net heat transfer 250 W in a vapor-compression refrigeration cycle. The cycle operates with R-134a working fluid at a steady state. The compressor's isentropic efficiency is at 60% with a high pressure of 16 bar and low pressure of 1 bar during the cycle. Solve for the mass flow rate, coefficient of performance, and draw the T-s diagram.
An ideal vapor compression cycle operates between the temperature limits of -5 °c and 30 °C and uses R134a as the refrigerant, which flows at a rate of 0.6 kg/s. The P-h- as well as T-s-diagrams that illustrate the refrigerating process is given in diagram, and respectively. Refigerant is compressed to the state in the compressor and heat is rejected in the condenser at constant for ideal Vapour compression cycle.
A refgeration plant working on a sinple vapour compression cycle with pressure limits of 2.1 bar and 13.5 bar produces q cooling effect of 50kw. The refrigerant is dry saturated at the exit of evaporator and saturated liquid at the exit of condenser. Determine the power required by the compressor to run the refigeration plant . The properties of the refrigerant is given below. Take the specific heat of refrigerant vapour as 2.903 kJ/kg K
Refrigerant 22 is the working fluid in a Carnot vapor refrigeration cycle for which the evaporator temperature is -30°C. Saturated vapor enters the condenser at 36°C, and saturated liquid exits at the same temperature. The mass flow rate of refrigerant is 10 kg/min. Determine the power input to the compressor, in kW,
A refrigeration system with a capacity of 15 tons of refrigeration, operates at 150 kPa in the evaporator, while in the condenser it is 1000 kPa. If the R-134a refrigerant is in a saturated state, calculate the theoretical power required to operate the compressor. Compressor Power = Answer kW
A vapor-compression system produces 20 tons of refrigeration using R12 as a refrigerant while operating between a condenser temperature of 41.6°c and an evaporator temperature of – 25°c. The superheat at the compression suction and the sub-cooling at the condenser outlet are 10°K. The pressure drop are 10kPa across the evaporator and the condenser. Determine the refrigerating effect in kJ per kilogram, the circulating rate of R12 in kilograms per second, the power required, the COP, the heat rejected in kW and the volume flow rate of refrigerant at compressor inlet conditions. 10° K subcooling 4 Tm= 41.6° C h= C s =C Tevap =-25° C 10° K superheat
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11. A vapour compression refrigeration plant uses ammonia. The compressor takes vapour from the evaporator at 207.7kPa and -8°C and delivers to the condenser at 1470kPa and 113°C. The temperature of the liquid leaving the condenser at a rate of 12kg/min is 38°C. Calculate: (a). the dryness of the refrigerant entering the evaporator (b). the cooling load (c). the power to the compressor (d). coefficient of performance (e). plant capacity
A refrigeration system with a capacity of 15 tons of refrigeration, operates at 150 kPa in the evaporator, while in the condenser it is 1450 kPa. If refrigerant R-717 is saturated, calculate the theoretical power required to operate the compressor. Compressor Power =

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