Feed Throat Cooling Requirement Calculator

Calculates coolant flow dynamics, heat transfer coefficients, required heat transfer area, and cooling safety factor for an extruder feed throat jacket.

📖 Need the theory? Read the methodology, assumptions, and equations in the full reference guide.

Read Feed Throat Cooling Requirement Calculator Guide →

1. Define Input Parameters

Heat Load (Q_dot)[W]

Coolant Inlet Temperature (T_in)[°C]

Coolant Outlet Temperature (T_out)[°C]

Target Inner Wall Temperature (T_wall)[°C]

Coolant Specific Heat Capacity (c_p)[J/(kg·K)]

Coolant Density (rho)[kg/m³]

Coolant Dynamic Viscosity (mu)[kg/(m·s)]

Coolant Prandtl Number (Pr)[-]

Coolant Thermal Conductivity (k_w)[W/(m·K)]

Fouling Resistance (R_f)[m²·K/W]

Hydraulic Diameter of Channel (D_h)[m]

Flow Cross-Sectional Area (A_c)[m²]

Inner Barrel Diameter (D_i)[m]

Jacket Length (L_j)[m]

Barrel Wall Thickness (t_wall)[m]

Barrel Thermal Conductivity (k_s)[W/(m·K)]

2. Engineering Output

Mass Flow Rate (m_dot)
- kg/s

Coolant Velocity (v)
- m/s

Reynolds Number (Re)
- -

Nusselt Number (Nu)
- -

Convective Heat Transfer Coefficient (h_c)
- W/(m²·K)

Overall Heat Transfer Coefficient (U)
- W/(m²·K)

Log Mean Temperature Difference (dT_lm)
- °C

Required Heat Transfer Area (A_req)
- m²

Available Heat Transfer Area (A_avail)
- m²

Safety Factor (SF)
- -

Need this calculation offline?

Download Offline Excel Calculation

Context & Assumptions

Feed throat cooling is a crucial aspect of extrusion processing that prevents premature polymer melting and bridging below the hopper. Maintaining the barrel wall temperature below the material's softening point ensures consistent pellet feeding and prevents operating instabilities. This calculation evaluates the required convective heat transfer area and safety factor for jacketed extruder barrel designs.

Legal Disclaimer & Limitation of Liability The results provided by this tool are for educational and preliminary estimation purposes only. NO WARRANTY: MyEngineeringTools.com makes no warranties, express or implied, regarding the accuracy or applicability of these results to any specific engineering project. LIMITATION OF LIABILITY: MyEngineeringTools.com SHALL NOT BE LIABLE for any direct, indirect, incidental, or consequential damages arising from the use of this data. All results MUST be independently verified by a qualified professional engineer before implementation in any industrial or physical environment.

Feed Throat Cooling Requirement Calculator

1. Define Input Parameters

2. Engineering Output

Context & Assumptions

Understand the Engineering Principles

Looking for more tools?