Q2/ In simple refrigeration system uses R134a, the evaporator pressure is 0.25 MPa and the condenser pressure is 1. MPa. The evaporator load is 25 TR. Determine the required work to operate the compressor motor in (a) kW, (b) hp.
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- The seasonal energy efficiency ratio (SEER) includes the energy used in the _____and _____cycles.A tankless water-heating system gets its heat from thesystem's_______.For a 10-ton-capacity refrigeration system, the pressure of refrigerant in the evaporator is 150 kPa, whereas in the condenser it is 950 kPa. If refrigerant R-134a is used under saturated conditions, calculate the theoretical power required to operate the compressor = ... KW
- Q.2: A refrigeration system using refrigerant 22 is to have a refrigerating capacity of 80 kW. The cycle is a standard vapor-compression cycle in which the evaporating temperature 42°C. -8°C and the condensing temperature (a) Determine the volume flow of refrigerant measured in cubic is meters inlet at the to the compressor. second per (b) Calculate the power required by the compressor. (c) At the entrance to the evaporator what is the fraction of vapor in the mixture.a.) What are the different types of fans used in air-conditioning systems? Discuss their applications and relative advantages and disadvantages. b.) Air from an air-conditioned room is exhausted into atmosphere through a grill. The quantity of air passes through the grill is 20 cubic meter minute. The duct area leading to the grill is 0.12 m2. The static pressure behind the grill is 3 mm of water. Find the effective area of grill exhausting the air into atmosphere. Take the pressure loss passing through the grill as 0.5 mm of water. Solve both a and b Asap please , I will rateCalculate the power required by a system of one compressor serving two evaporators. One evaporator carries a load of 40 kW at 12 degree C and the other a load of 70 kW at -6 degree C. A back pressure valve reduce the pressure in the 10 degree C evaporator to that of the -5 degree C evaporator. The condensing temperature is 37 degree C. The refrigerant is 134-A. What is the COP? With TS Diagram Use this Steam Table:https://docdro.id/VkxK8WH
- A manufacturing company is intending to use its water cooled condenser for its proposed cold storage room. The name plate of the condenser gives the following specifications: refrigerant ammonia condenser water inlet 30 OC condenser water outlet 40 ỌC condensing temperature 35 OC refrigerant flow 3.84 kg/min circulating water flow 120 kg/min If the company decided to purchase a new compressor and evaporator, find the tonnage of the system and the temperature in the evaporator, (b) what is the COP? (c) find the theoretical hp required.a cooling system with a capacity of 10 tons of refrigeration, operates at 210 kPa in the evaporator, while in the condenser is 1100 kPa. if refrigerant R-717 is saturated, calculate the theoretical power required to operate the compressor. compressor power = .... kWA refrigeration cycle operates at a flowrate of 2 lbm/hr, the enthalpy change is h = 4000 BTU/lbm,compute the refrigeration lift (tons). Determine the HP required for the compressor to be used for problem.
- A refrigeration system with a capacity of 10 tons of refrigeration, operates at 210 kPa in the evaporator, while in the condenser it is 850 kPa. If R-134a refrigerant is in a saturated state, calculate the theoretical power required to operate the compressor. Compressor power = ... W.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).Q.1. A refrigeration process with interstage cooling uses refrigerant HFC-134a, and the outlet of the condenser is to be saturated liquid at 40°C. Refer to the following figure for stream numbers in your solution. The pressure of the flash chamber and the intermediate pressure between compressors is to be 290 kPa. The evaporator is to operate at -20°C and the outlet is to be saturated vapor. The flowrate of stream 1 is 23 kg/h. The flash chamber may be considered adiabatic. The compressors may be considered to be 80% efficient. a) What is the power input required to the first compressor? b) What are the flowrates of streams 6 and 7? What is the enthalpy of stream 4? Hot Side 6 5 Condenser 2nd Stage Compressor Throttle Valve 7 Flash Chamber Vapor Phase Only 1st Stage Compressor 8 Throttle Valve Evaporator 1 2 Cold Side