A standard vapour compression cycle uning R22, which have the following data: > Power developed 50...

A standard vapour compression cycle uning R22, which have the following data: > Power developed 50 kW of reftigeration. - Power required for compression 11 kW. > Evaporation pressute 4 bur. > Mass flow rate of refrigerant 0.3 kuls yd Calculate condensing temperature, discharge temperature and coefficient of performance

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samet mamat answered 2 years ago

A vapor-compression refrigeration cycle working with R22 contains a liquid-to-suction heat exchanger.

A vapor-compression refrigeration cycle working with R22 contains a liquid-to-suction heat exchanger. The saturated liquid refrigerant at 40 ℃ leaving the condenser and enteringthe heat exchanger is used to superheat the saturated vapor refrigerant leaving the evaporator at 7 ℃ by 8 ℃. If the compressor is capable of pumping 5 1/s of vapor refrigerant measuredat the inlet to the compressor and the compression processes are considered isentropic in both cases listed below, determine; (a) The refrigerating capacity in kW,...

At the beginning of the compression process of an air-standard dual cycle with a compression ratio...

At the beginning of the compression process of an air-standard dual cycle with a compression ratio of 18, the temperature is 300K and the pressure is 0.1 MPa. The pressure ratio for the constant volume part of the heating process is 1:5:1. The volume ratio for the constant pressure part of the heating process is 1:2:1. Determine: (a.) The temperature and pressure at the end of each process of the cycle. (b.) The thermal efficiency. (c.) The mean effective pressure.

At the beginning of compression process of an air standard dual cycle operating with a compression...

At the beginning of compression process of an air standard dual cycle operating with a compression ratio of 15.88, the pressure is 95 kPa and the temperature is 300 K. The cutoff ratio for the cycle is 1.15. Determine the thermal efficiency of cycle, if the pressure increases by a factor of 2.15 during the constant volume heat addition process. Use table F2 for variation of specific heats with temperature in the analysis.

A vapor-compression refrigeration cycle working with R22 contains a liquid-to-suction heat exchanger. The saturated liquid refrigerant...

A vapor-compression refrigeration cycle working with R22 contains a liquid-to-suction heat exchanger. The saturated liquid refrigerant at 40 °C leaving the condenser and entering the heat exchanger is used to superheat the saturated vapor refrigerant leaving the evaporator at 7 °C by 8 °C. If the compressor is capable of pumping 5 l/s of vapor refrigerant measured at the inlet to the compressor and the compression processes are considered isentropic in both cases listed below, determine; (a) The refrigerating capacity...

Q/ A vapor-compression refrigeration cycle working with R22 contains a liquid-to-suction heat exchanger. The saturated liquid...

Q/ A vapor-compression refrigeration cycle working with R22 contains a liquid-to-suction heat exchanger. The saturated liquid refrigerant at 40 °C leaving the condenser and entering the heat exchanger is used to superheat the saturated vapor refrigerant leaving the evaporator at 7 °C by 8 °C. If the compressor is capable of pumping 5 l/s of vapor refrigerant measured at the inlet to the compressor and the compression processes are considered isentropic in both cases listed below, determine; (a) The refrigerating...

Consider a vapour compression refrigeration cycle that uses R-134a as refrigerant. The R-134a enter

Consider a vapour compression refrigeration cycle that uses R-134a as refrigerant. The R-134a enters the compressor as a saturated vapour at 200 kPa, and exits the condenser as a saturated liquid at 900 kPa. The rate of refrigeration of the cycle is to be 6.0 tons of refrigeration (1 ton of refrigeration = 3.517 kW). The compressor isentropic efficiency is 80%. Determine: a) The temperature of evaporation and condensation of the refrigerant; b) Mass flow of the refrigerant R-134a, in ...

The compression ratio of an air-standard Otto cycle is 9.5. Prior to the isentropic compression process,...

The compression ratio of an air-standard Otto cycle is 9.5. Prior to the isentropic compression process, the air is at 100 kPa, 35°C and 600 cm3 . The temperature at the end of the isentropic expansion process is 800 K. Using specific heat values at room temperature (25°C), determine (a) the highest temperature and pressure in the cycle (b) the amount of heat transferred in during the cycle (kJ) (c) the thermal efficiency (d) the mean effective pressure Part (a)...

An air-standard dual cycle has a compression ratio of 14. At the beginning of compression, p1...

An air-standard dual cycle has a compression ratio of 14. At the beginning of compression, p1 = 14.5 lbf/in.2, V1 = 0.5 ft3, and T1 = 50°F. The pressure doubles during the constant-volume heat addition process. For a maximum cycle temperature of 3500°R, determine: (a) the heat addition to the cycle, in Btu. (b) the net work of the cycle, in Btu. (c) the percent thermal efficiency. (d) the mean effective pressure, in lbf/in.2

In an ideal standard dual cycle, the pressure and temperature at the beginning of compression are...

In an ideal standard dual cycle, the pressure and temperature at the beginning of compression are 1 bar and 47°C, respectively. The heat supplied in the cycle is 1250kJ/kg, two third of this heat is being added at constant volume and the remaining heat is added at constant pressure. If the compression ratio is 16, determine i. the maximum temperature in cycle ii. thermal efficiency of the cycle iii. the mean effective pressure

A Rankine cycle power plant is being developed to operate an irrigation system. In this power...

A Rankine cycle power plant is being developed to operate an irrigation system. In this power plant solar energy will be used to boil a low boiling point fluid within glazed flat plate solar collectors. The working fluid that has been selected is the commonly used refrigerant R 134a (1, 1, 1, 2 tetrafluoroethane), tabulated properties of which may be found in Tables A11, A12 and A13 at the rear of the prescribed text. The plates being used for the...

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