https://learn-eu-central-1-prod-fleet01 ... 4473600000&... ← > C Q 1 of 1 Q + 3 CD Page view | A Read aloud T Add textDraw Highlight Erase Thursday. Avowst 15, 2019 Thursday, September 10, 2009 (last update) CONSTANTS EXED Volt Dry Air Density (100kPa @25°C) Air Gas Constant (R) Cylinder Diameter (mm) kg/m³ Jikg.K kPa 809 809 Electric Motor Voltage (Volt) Power Factor-(Electric Motor Efficiency) Electric Motor Revolutions % RMP Stroke Length (mm) Atmospheric Pressure Stroke Volume (cm³) Gauge Delivery Pressure 1 Electric Motor: Compressor-Drive Ratio Air Flow-Pipe Diameter (mm) % Clearance: Stroke Volume Intake suction below Atmospheric kPa mm P, Intake Pressure P. Stage1 Compression Pressure · Stage 1 Inter Cooling Pressure P,Stage2 Compression Pressure T, » Intake Temperature - Stage1 Compression Temp Stage 1 Inter Cooling Temp T₂-Stage2 Compression Temp Motor Current (Ampere) Stage 1 Air Flow (m/s) Pressure/Volume Index P.V.: Index n PV Index m Mass Flow Free Air Delivery (FAD) Atmospheric 87.24 kPa and 21.125356125 Mass Flow (based on Compressor RMP) Stage 1 - Indicated Power (P1) Stage 2- Indicated Power (P2) Total Compressor Indicated Power (IP) Electrical Power Input Compressor Mechanical Efficiency Isothermal Efficiency Stage 1-Volumemetric Efficiency Stage 2-Volumemetric Efficiency Total - Volumemetric Efficiency E Type here to search INPUT VARIABLES OUTPUT Stage 1 76.0 70.0 317.6 1.2 % Bar 0.9 5.2 5.2 || 8.97 Stage: 2 32.0 70.0 56.3 4.7% kPa 86.54 520 520 897 Deg ("C) K Kelvin 21 294 64 338 25 298 36 309 12.71 Ampere 14.74 Metre/sec (kg/min) (L/min) (kg/min) KW KW KW KW O 10 1000 900 800 700 600 500 400 300 200 100 0 | M D 4 M D 0.0 - 4 4 50.0 Stage Cycle Stage 1 - Start Compression Stage 1-End Compression Stage 2 - Start Compression Stage 2 - End Compression Stage 2-End Delivery Stage 2-Start Intake Stage 1 - End Delivery Stage 1 - Start Intake >> 3' Volume V1 V2X V2 V3 V4 V5 V6 V7 L 100.0 (cm) 321.41 61.32 56.30 33.88 2.65 4.40 3.81 19.98 1.17 287.0 87.2 8.1 -0.70 150.0 P1 P2X P2 P3 P4 P5 P6 P7 200.0 Bar 0.9 5.2 5.2 9.0 9.0 5.2 5.2 0.9 H kPa 87 520 520 897 897 520 520 87 250.0 300.0 Temperature T1 T2X T2 T3 T4 T5 T6 T7 2.⁹ 220.0 80% 1440.0 20 9.0 350.0 Deg ("C) 21 64 25 36 25 64 21 87 Pa Kelvin 294 338 298 309 309 298 338 294 5°C {" I [+] 0 s O @ 4) 10:16 PM 6/5/2022 x {0}
Rewrite the equation in terms of n, or n as the subject of the formula, P2 T₂ = T₁₂ - T. (P²)" P₁. Substitute the of the pressure to find n and m. (4 marks) • 2. Volume induced = V₁ - V₁ Calculate the induced volume by finding the difference in that of point 1 and 7 then 2 and 5. (4 marks) -1)/m P₁V Calculate the powers for each stage. Remember n and m, induced volumes from 2 are different and pressure ratios are different. Multiply equation by N/ 2x60 to get your answers in W. The add the indicated power for both cases. (6 marks) 3. Total minimum power = 2 x (power required for one stage) Use the average index (n+m)/2, 4. induced volume 1-7 to find the total indicated power. (2 marks) 5. Calculate the density, mass flow rate and rate of heat (6 marks) CALCULATIONS 1. \(n-1)/n or, n= ......
Cylinder Diameter (mm) Stroke Length (mm) Stroke Volume (cm) % Clearance: Stroke Volume INPUT VARIABLES Stage 11 76.0 70.0 317.6 1.2% Stage 2 32.0 70.0 56.3 4.7% 1000 CONSTANTS FIXED Dry Air Density (100kPa @ 25°C) Air Gas Constant (R) Atmospheric Pressure Gauge Delivery Pressure Intake suction below Atmospheric 1.17 287.0 87.2 8.1 -0.70 kg/m³ J/kg.K kPa 809 kPa
INPUT VARIABLES P= Intake Pressure P.Stage1 Compression Pressure Stage 1 Inter Cooling Pressure 2P,Stage2 Compression Pressure T, Intake Temperature T Stage1 Compression Temp ST, Stage 1 Inter Cooling Temp T,Stage2 Compression Temp Motor Current (Ampere) Stage 1 Air Flow (m/s) Bar kPa 0.9 86.54 5.2 520 5.2 520 8.97 897 Deg (C) Kelvin 294 338 298 309 12.71 Ampere 14.74 Metre/sec SCINE 64 36 1000 900 800 700 600 500 400
200 100 0 0.0 50.0 Stage Cycle Stage 1-Start Compression Stage 1-End Compression Stage 2-Start Compression Stage 2-End Compression Stage 2-End Delivery Stage 2- Start Intake Stage 1-End Delivery Stage 1-Start Intake 100.0 Volume (cm³) V1 321.41 V2X 61.32 V2 56.30 V3 33.88 V4 2.65 V5 4.40 V6 3.81 V7 19.98 150.0 200.0 Pressure Bar кра P1 0.9 87 P2X 5.2 520 P2 5.2 520 P3 9.0 897 P4 9.0 897 P5 5.2 520 P6 5.2 520 P7 0.9 87 250.0 300.0 Temperature T1 T2X T2 T3 T4 T5 T6 T7 350.0 Deg ("C) 21 64 25 36 36 25 64 21 Pa Kelvin 294 338 298 309 309 298 338 294
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