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The thermodynamic systems shown below operate at steady state. For the specified contro volume, write the energy balance and mass balance, assuming negligible kinetic an potential energy effects. The equations must reflect the state points shown in the accompanying diagram. No partial points will be given to wrong answers, and answers with notations/subscripts that are not consistent with the state points in the accompanying diagram. Schematic diagram Air P₁ = 1 bar T₁ = 300 K m₁=0.6 kg/s Compressor A P₂=3 bar T₂=600 K T6=30°C P6 Ps wwwwww wwwww Saturated liquid R-134a T3 = 115°F m3 = 1.5 lb/s Throttling valve 4 P₁ = 60 lbf/in.² P4= 9 bar --7--800-K Compressor B Heat exchanger 7₂=328 K P3 P₂ T₁=450 K Water T₁= 20°C Ps= 1 bar Air T₁=535°R Cp=0 0.240 Btu/lb. R Fan wwwwwww WVB Wey=-0.2 hp Saturated vapor Ps= P4 Heat exchanger Control Volume 1. Air line only (from state 1 to state 4- enclosed in red box) 2. The whole heat exchanger (enclosed in green box) 3. The whole heat exchanger 4. The refrigerant line (R-134a) from state 3 to state 5. Note that no mixing occurs in the heat exchanger 5. Fan and whole heat exchanger (enclosed in red box)

The thermodynamic systems shown below operate at steady state. For the specified contro volume, write the energy balance and mass balance, assuming negligible kinetic an potential energy effects. The equations must reflect the state points shown in the accompanying diagram. No partial points will be given to wrong answers, and answers with notations/subscripts that are not consistent with the state points in the accompanying diagram. Schematic diagram Air P₁ = 1 bar T₁ = 300 K m₁=0.6 kg/s Compressor A P₂=3 bar T₂=600 K T6=30°C P6 Ps wwwwww wwwww Saturated liquid R-134a T3 = 115°F m3 = 1.5 lb/s Throttling valve 4 P₁ = 60 lbf/in.² P4= 9 bar --7--800-K Compressor B Heat exchanger 7₂=328 K P3 P₂ T₁=450 K Water T₁= 20°C Ps= 1 bar Air T₁=535°R Cp=0 0.240 Btu/lb. R Fan wwwwwww WVB Wey=-0.2 hp Saturated vapor Ps= P4 Heat exchanger Control Volume 1. Air line only (from state 1 to state 4- enclosed in red box) 2. The whole heat exchanger (enclosed in green box) 3. The whole heat exchanger 4. The refrigerant line (R-134a) from state 3 to state 5. Note that no mixing occurs in the heat exchanger 5. Fan and whole heat exchanger (enclosed in red box)

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
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The thermodynamic systems shown below operate at steady state. For the specified control volume, write the energy balance and mass balance, assuming negligible kinetic and potential energy effects. The equations must reflect the state points shown in the accompanying diagram. No partial points will be given to wrong answers, and answers with notations/subscripts that are not consistent with the state points in the accompanying diagram. Schematic diagram Air P₁ = 1 bar T₁ = 300 K m₁=0.6 kg/s Compressor A P₂=3 bar I T₂=600 K WCVA T6=30°C P6 Ps wwwwww wwwww Saturated liquid R-134a T3 = 115°F m₂ = 1.5 lb/s Throttling valve 4 P₁ = 60 lbf/in.² P4= 9 bar --T880-K4 Compressor B Heat exchanger T₂=328 R P3= P₂ T₂=450 K Water T₁= 20°C Ps= 1 bar Air T₁=535°R Cp=0.240 Btu/lb-ºR Fan wwww WVB Wey=-0.2 hp Saturated vapor Ps= P4 Heat exchanger Control Volume 1. Air line only (from state 1 to state 4- enclosed in red box) 2. The whole heat exchanger (enclosed in green box) 3. The whole heat exchanger 4. The refrigerant line (R-134a) from state 3 to state 5. Note that no mixing occurs in the heat exchanger 5. Fan and whole heat exchanger (enclosed in red box)
Transcribed Image Text:The thermodynamic systems shown below operate at steady state. For the specified control volume, write the energy balance and mass balance, assuming negligible kinetic and potential energy effects. The equations must reflect the state points shown in the accompanying diagram. No partial points will be given to wrong answers, and answers with notations/subscripts that are not consistent with the state points in the accompanying diagram. Schematic diagram Air P₁ = 1 bar T₁ = 300 K m₁=0.6 kg/s Compressor A P₂=3 bar I T₂=600 K WCVA T6=30°C P6 Ps wwwwww wwwww Saturated liquid R-134a T3 = 115°F m₂ = 1.5 lb/s Throttling valve 4 P₁ = 60 lbf/in.² P4= 9 bar --T880-K4 Compressor B Heat exchanger T₂=328 R P3= P₂ T₂=450 K Water T₁= 20°C Ps= 1 bar Air T₁=535°R Cp=0.240 Btu/lb-ºR Fan wwww WVB Wey=-0.2 hp Saturated vapor Ps= P4 Heat exchanger Control Volume 1. Air line only (from state 1 to state 4- enclosed in red box) 2. The whole heat exchanger (enclosed in green box) 3. The whole heat exchanger 4. The refrigerant line (R-134a) from state 3 to state 5. Note that no mixing occurs in the heat exchanger 5. Fan and whole heat exchanger (enclosed in red box)
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