Main dimensions and calculation results of the heat exchanger

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Main dimensions and calculation results of the heat exchanger
Parameters:
Tube side / Shell side
Flow rate, kg/s: 6.159 / 6.181
Average molecular weight: 18.916 / 18.984
Inlet/outlet temperature, °C: 420/160 / 108/380
Pressure, atm: 2.06 / 1.9

Properties:
Qualitative temperature, °C: 290 / 244
Density, kg/m³: 0.8475 / 0.8445
Specific heat capacity at constant pressure, kJ/kg·K: 1.8749 / 1.7627
Viscosity, Pa·s: 1.955×10-5 / 1.92631×10-5
Thermal conductivity, W/m·°C: 0.0697 / 0.04295
Prandtl number: 0.79 / 0.526
Reynolds number:

Equipment structure parameters:
Type: Floating head
Number of units: 10
Inner diameter of shell, mm: 1200
Number of shell sides: 2
Length of tubes, mm: 4500
Pipe center distance, mm: 32
Pipe diameter, mm: φ25×2
Pipe arrangement: Δ
Number of pipes: 768
Number of baffle plates: 14
Heat transfer area, m²: 272
Distance between baffle plates, m: 0.3
Number of tube sides: 4
Material: Carbon steel
Flow velocity, m/s: 10.95 / 13.8
Surface heat transfer coefficient, W/m²·K: 95.7 / 127
Fouling thermal resistance, m²·K/W: 0.5×10-3 / 0.5×10-3
Resistance, Pa: 6396 / 21644
Heat flow rate, kJ/s: 2964
Heat transfer temperature difference, °C: 41.6
Heat transfer coefficient, W/m²·K: 32
Heat transfer area margin, %: 21.9