Find the refrigeration capacity (in TR ) required to cool 29 m³/min from 29°C to 18°C if air from the outside has 90% RH?
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- Condensers in these refrigerators are all_______cooled.A refrigeration system operated on an ideal vapor-compression using R-12 with a vaporizing temperature of -10 degrees Celsius and a condensing temperature of 30 degrees Celsius, it requires 15 hp to drive the motor of the compressor. Find the ff: Enthalpies at each point of the cycle in kJ/kg Refrigerating Capacity in TOR • Mass of the Refrigerant in kg/s Percent Quality in the mixture Heat Rejected in kW Coefficient of Performance • Schematic and P-h DiagramA refrigeration system using R-22 has a capacity of 320 kW of refrigeration. The evaporating temperature is -10C and the condensing temperature is 40C.Calculate the fraction of vapor in the mixture before the evaporator.
- A refrigeration system with a capacity of 10 tons of refrigeration, operates at 210 kPa in the evaporator, while in the condenser it is 800 kPa. If R-134a refrigerant is in a saturated state, calculate the theoretical power required to operate the compressor. Compressor power = .... kWA plant using R134a refrigerant has a cooling capacity of 352 kW of refrigeration. It evaporates at 0 Cand condenses at 35 C, with the 5 of superheat at the evaporator outlet and 5 K of sub-cooling at the condenser outlet. Assuming isentropic compression and ignoring pressure drops in the piping, the evaporator and condenser, determi the following; a) The refrigeration effect b) The mass flow rate of refrigerant ) The compressor power d) The rate of heatrejection at the condenser e) The COP 0 The corresponding Carnot COP g) The percentage Carnot-efficiencyAn ideal refrigeration system using R-134a, working at -10 °C and 40 °C for evaporator and condenser temperature respectively. What is the Pressure of condenser and Evaporator respectively in "bar" unit.
- a system with a refrigeration capacity of 15, operates at 150 kPa in the evaporator, while in the condenser it is 950 kPa. if refrigerant R-134a is saturated, calculate the theoretical power required to operate the compressor. compressor power is ..2. A refrigeration system with a capacity of 15 tons of refrigeration, operates at 150 kPa in the evaporator, while the condenser is 1450 kPa. If refrigerant R-717 is saturated, calculate the theoretical power required to operate the compressor. Compressor Power = Answer kW.A refrigeneration system with a capacity of 15 tons of refrigeration, operates at 150 kPa in the evaporator, while in the condenser it is 1380 kPa. If refrigerant R-717 is saturated, calculate the theoretical power required to operate the compressor. Compressor power= ... kW
- Q3/ In refrigeration system uses R22, the evaporator temperature is -10°C and the condenser temperature is 50°C. The system is ideal. Determine using the tables: 1. Compressor work (w). 2. Rejected heat from the condenser. 3. Refrigeration effect (RE). 4. Coefficient of Performance (COP).A 60 tons R-22 refrigeration system has an evaporator temp.of -4°C and a condenser temp. of 30C.Find the compressor power. at 30C:hf=236.664 kJ/kg-K at-4°℃:hf=195.335 kJ/kg-K;hg=403.876 kJ/kg-K;enthalpy at condenser entrance is 430 kJ/kg-KIn an absorption refrigeration system, heating cooling and refrigeration takes place at 140°C, 25°C and -15°C. Find theoretical COP of the system. Now heating temp. is increased to 180°C and refrigeration temp is decreased to -30°C. Find percentage change in theoritical COP.