Question
In: Mechanical Engineering
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
Solutions
samet mamat answered 1 year agoRelated Solutions
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.
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 ...
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...
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)...
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...
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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