This document provides design and test conditions for a centrifugal pump. Key details include: - Design inlet pressure is 2.878 barA, outlet pressure is 6.303 barA, resulting in a pressure ratio of 2.19. - The first impeller has a diameter of 0.295m and tip width of 0.0207m. - Test conditions were for 100% CO2 at a suction pressure of 3.5 barA and temperature of 25°C. - Key performance parameters were calculated including a polytropic efficiency of 0.841, polytropic head of 41055 J/kg, and outlet temperature of 82.56549827°C.

1. In accordance to ASME PTC10 (1997) page 123 onwards
Design conditions
Inlet Discharge
Pressure (barA) 2.878 6.303 U2_1st impeller (m/s) = 202.61
Temperature (deg. C) 15 93 Machine Mach number = 0.8102
Specific volume (m^3/kg) 0.1610 0.0934 Machine Reynolds number = 3428517
Zed 0.9870 0.9871 Pressure ratio = 2.19006
Viscosity (kg/m.s) 7.60E-06 9.63E-06
Cp (J/kg.K) 639.09 658.51 Volume ratio = 1.72330
Cp/Cv 1.3694 1.3581
Sonic velocity (m/s) 250.06 279.68 RC = 0.02551
Enthalpy (J/kg) 166575 215381 RB = -8.95578
Entropy (J/kg.K) 2972436 2996205 RA = 0.66000
Polytropic efficiency = 0.841 nv1 = 1.446504533
Polytropic head (J/kg) = 41054 nv2 = 1.420464911
Molecular weight (kg/kmol) = 51.04 nt1 = 1.449619552
Rotational speed (rpm) = 13117 nt2 = 1.436549887
Max. design Temp. (deg. C) = 180 nv_avg = 1.433484722
1st critical speed (rpm) = 7506 nt_avg = 1.44308472
2nd critical speed (rpm) = 16617
1st imp. 2nd imp. 3rd imp. 4th imp. 5th imp. 6th imp. 7th imp. 8th imp. 9th imp. 10th imp.
Diameter (m) 0.295 0.294 na na na na na na na na
Tip width (m) 0.0207 0.0163 na na na na na na na na
Test conditions
Gas = 100% CO2
Suction pressure (barA) = 3.5
Suction temperature (deg. C) = 25 T2_calc (deg. C) 82.56549827
Molecular weight (kg/kmol) = 44.01 Hp (J/kg) 41055.93
Zed_1 = 0.981895011 Rem_corr_guess 0.999953089
Specific volume (m^3/kg) = 0.158021840 Poly. eff_guess 0.841039454
Speed (rpm) 13117.0000
Zed_2 0.980961232
Viscosity (kg/m.s) = 8.2981E-06 V_2 (m^3/kg) 0.095762958
nv1 = 1.3643437901 Volume ratio 1.650135332
nt1 = 1.3656319941 Schultz factor, f 1.004850748
1st impeller U2 (m/s) 202.61
Reynolds number 3198381
Remt/Remsp 0.932876034
RC 0.025945312
RB -8.953562012
RA 0.660000406
Poly. eff_calc 0.841039454
Rem_corr_calc 0.999953089
T2_guess (deg. C) 82.56549827
P2_input (barA) 6.884023950
nv2 1.326556040
nt2 1.340639124
nv_avg 1.345449915
nt_avg 1.353135559