I hope the solution is clear photo and fast Consider a Carnot refrigeration cycle executed in...
A Carnot vapor refrigeration cycle is used to maintain a cold region at 0 ?F where the ambient temperature is 75 ?F. Refrigerant R-134a enters the condenser as saturated vapor at 100 lbf/in2 and leaves as saturated liquid at the same pressure. The evaporator pressure is 20 lbf/in2. The mass flow rate of refrigerant is 13 lbm/s . a-compressor power b-turbine power c- coefficient of performance
An ideal vapor compression refrigeration cycle uses refrigerant 12 as a working fluid in an air conditioning system. The refrigerant enter the compressor as saturated vapor at 5oC and leaves the condenser as saturated liquid at 55oC. The mass flow rate of refrigerant is 0.7 kg/s. Heat is transferred from a reservoir at 15oC (the cool space) to the refrigerant in the evaporator and the heat rejected by the condenser is transferred to the environment which is at a temperature...
Ammonia flows at 250 kg/s through an ideal vapor-compression refrigeration cycle. The ammonia enters the compressor as saturated vapor at-10°C and exits the condenser as saturated liquid at 1000 kPa. Determine the: (a) refrigerant temperature leaving the compressor (b) refrigerant temperature leaving the condenser (c) refrigerant temperature leaving the expansion valve (d) coefficient of performance (e) refrigeration capacity, in tons.
Problem #1 [30 Points] Vapor Compression Refrigeration Cycle An ideal vapor compression refrigeration system cycle, with ammonia as the working fluid, has an evaporator temperature of -20°C and a condenser pressure of 12 bar. Saturated vapor enters the compressor, and saturated liquid exits the condenser. The mass flow rate of refrigerant is 3 kg/minute. Determine the coefficient of performance and the refrigerating capacity in tons. Given: Find: T-s Process Diagram: Schematic Assume:
P1 Ammonia flows at 250 kg/s through an ideal vapor-compression refrigeration cycle. The ammonia enters the compressor as saturated vapor at -10°C and exits the condenser as saturated liquid at 1000 kPa. Determine the: (a) refrigerant temperature leaving the compressor (b) refrigerant temperature leaving the condenser (c) refrigerant temperature leaving the expansion valve (d) coefficient of performance (e) refrigeration capacity, in tons.
An ideal vapor-compression refrigeration cycle operates at steady state with Refrigerant 134a as the working fluid. Saturated vapor enters the compressor at 1.25 bar, and saturated liquid exits the condenser at 5 bar. The mass flow rate of refrigerant is 8.5 kg/min. A. Determine the magnitude of the compressor power input required, in kW (report as a positive number). B. Determine the refrigerating capacity, in tons. C. Determine the coefficient of performance. Please answer all parts of the question. Thanks!
V6.23 Figure P6.23 shows a Carnot heat pump cycle operating at steady state with ammonia as the working fluid. The condenser tem perature is 49°C, with saturated vapor entering and saturated liquid exiting. The evaporator temperature -12°C a. Determine the heat transfer and work for each process, in kJ/kg of ammonia flowing. o56, 73 kJ b. Evaluate the coefficient of performance for the heat pump. 5, c. Evaluate the coefficient of performance for a Carnot refrigeration cycle operating as shown...
A steady flow Carnot cycle uses water as the working fluid. Water changes from saturated liquid to saturated vapor as heat is transferred to it from a source at 250 C. Heat rejection takes place at pressure of 20 kPa. Determine a) the thermal efficiency? b) the amount of heat rejected c) the net work output
Thermodynamics. No interpolation needed.
Problem #3. Refrigerant 134a is the working fluid for vapor-compression refrigeration cycle. The evaporator temperature is 8°C and the condenser pressure is 12 bar. Saturated vapor enters the compressor and superheated vapor enters the condenser at 60°C and exits the condenser as saturated liquid. For a refrigeration capacity of 8 tons or 2.816 x104 J/s determine the following: (1) The refrigerant mass flow rate in kg/s; (2) The compressor isentropic efficiency [Hint: Interpolation is required); (3)...
A vapor-compression refrigeration system which operates on the cascade cycle arrangement shown below is used to obtain refrigeration at a low temperature. Refrigerant-12 is the working fluid in the high-temperature cycle and Refrigerant-13 is used in the low-temperature cycle. For the Refrigerant 13 cycle, the working fluid enters the compressor as saturated vapor at -30°F and is compressed isentropically to 250 lbf/in2. Saturated liquid leaves the intermediate heat exchanger at 250 lbf/in2 and enters the expansion valve. For the Refrigerant...