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A schematic of a combined refrigeration cycle and a portion of a steam power cycle is shown in the figure below. In the power cycle, steam (water) with a mass flow rate m, enters the turbine at state 1. A portion of the steam (m₂) exits the turbine at state 2 before passing through the mixing chamber. The remainder (m3 = 3 kg/s) exits the turbine at state 3 and then enters a heat exchanger where it is cooled by the refrigeration cycle. The water leaves the heat exchanger at state 4 as a saturated liquid and then is pumped up to the mixing chamber pressure. R-134a with a mass flow rate of me is used in the refrigeration cycle to provide cooling to the water in the heat exchanger. Properties at each state are given in the figure below. Assume that the compressor, turbine, pump, mixing chamber, throttling valve and outer walls of the heat exchanger are well insulated and neglect changes in potential and kinetic energy across all devices.

A schematic of a combined refrigeration cycle and a portion of a steam power cycle is shown in the figure below. In the power cycle, steam (water) with a mass flow rate m, enters the turbine at state 1. A portion of the steam (m₂) exits the turbine at state 2 before passing through the mixing chamber. The remainder (m3 = 3 kg/s) exits the turbine at state 3 and then enters a heat exchanger where it is cooled by the refrigeration cycle. The water leaves the heat exchanger at state 4 as a saturated liquid and then is pumped up to the mixing chamber pressure. R-134a with a mass flow rate of me is used in the refrigeration cycle to provide cooling to the water in the heat exchanger. Properties at each state are given in the figure below. Assume that the compressor, turbine, pump, mixing chamber, throttling valve and outer walls of the heat exchanger are well insulated and neglect changes in potential and kinetic energy across all devices.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Determine the heat transfer from the water to the R-134a in heat exchange Q,he
P6 = Ps= P₂ X = 40% mg (6) Mixing Chamber Ps= 2000 kPa +5 W W₂ T = -30°C sat. vapor Comp, Pump P₂ = 2000 kPa T₂ = 250°C 9 Pg= P10 = 500 kPa T₂ = 75°C 2 m₂ Compressor P4 = P3 sat. liquid 4 P₁ = 5000 kPa T₁ = 350°C (1) Steam Power Cycle H₂O Turbine m Heat Exchanger Refrigeration Cycle R-134a me Condenser Q m₂ = 3 kg/s (3) P3 = 200 kPa X3 = 90% (7) T, = -30°C sat. liquid Throttling Valve -10
Transcribed Image Text:P6 = Ps= P₂ X = 40% mg (6) Mixing Chamber Ps= 2000 kPa +5 W W₂ T = -30°C sat. vapor Comp, Pump P₂ = 2000 kPa T₂ = 250°C 9 Pg= P10 = 500 kPa T₂ = 75°C 2 m₂ Compressor P4 = P3 sat. liquid 4 P₁ = 5000 kPa T₁ = 350°C (1) Steam Power Cycle H₂O Turbine m Heat Exchanger Refrigeration Cycle R-134a me Condenser Q m₂ = 3 kg/s (3) P3 = 200 kPa X3 = 90% (7) T, = -30°C sat. liquid Throttling Valve -10
A schematic of a combined refrigeration cycle and a portion of a steam power cycle is shown in the figure below. In the power cycle, steam (water) with a mass flow rate m₁ enters the turbine at state 1. A portion of the steam (m₂) exits the turbine at state 2 before passing through the mixing chamber. The remainder (m3 = 3 kg/s) exits the turbine at state 3 and then enters a heat exchanger where it is cooled by the refrigeration cycle. The water leaves the heat exchanger at state 4 as a saturated liquid and then is pumped up to the mixing chamber pressure. R-134a with a mass flow rate of me is used in the refrigeration cycle to provide cooling to the water in the heat exchanger. Properties at each state are given in the figure below. Assume that the compressor, turbine, pump, mixing chamber, throttling valve and outer walls of the heat exchanger are well insulated and neglect changes in potential and kinetic energy across all devices.
Transcribed Image Text:A schematic of a combined refrigeration cycle and a portion of a steam power cycle is shown in the figure below. In the power cycle, steam (water) with a mass flow rate m₁ enters the turbine at state 1. A portion of the steam (m₂) exits the turbine at state 2 before passing through the mixing chamber. The remainder (m3 = 3 kg/s) exits the turbine at state 3 and then enters a heat exchanger where it is cooled by the refrigeration cycle. The water leaves the heat exchanger at state 4 as a saturated liquid and then is pumped up to the mixing chamber pressure. R-134a with a mass flow rate of me is used in the refrigeration cycle to provide cooling to the water in the heat exchanger. Properties at each state are given in the figure below. Assume that the compressor, turbine, pump, mixing chamber, throttling valve and outer walls of the heat exchanger are well insulated and neglect changes in potential and kinetic energy across all devices.
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