Refrigeration Engineering

Flooded Evaporator Shell-and-Tube Heat Transfer Coefficient with Frost Penalty Estimator Calculator

Flooded Evaporator Shell-and-Tube Heat Transfer Coefficient with Frost Penalty Estimator engineering calculator.

Quick Answer

Calculate Flooded Evaporator Shell-and-Tube Heat Transfer Coefficient with Frost Penalty Estimator

Calculator

Effective overall heat transfer coefficient (W⁄(m²·K))
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Result Interpretation

Flooded Evaporator Shell-and-Tube Heat Transfer Coefficient with Frost Penalty Estimator Calculator computes Effective overall heat transfer coefficient in W/(m^2*K) using the defined engineering formula and the input values provided.

Worked Example

Verified calculation

Given:

  • Tube-side (refrigerant) boiling heat transfer coefficient = 3800
  • Frost layer thermal resistance multiplier = 0.65
  • Shell-side convective heat transfer coefficient = 1200
  • Tube wall conductive resistance = 4.2E-5
  • COP-based frost degradation factor = 0.82
  • Shell-side fouling resistance = 0.00015

Expected Result:

  • Effective overall heat transfer coefficient = 472.02145311947

Engineering Interpretation:

Under the given input conditions, the calculated result is: Effective overall heat transfer coefficient = 472.02145311947 W/(m^2*K).

The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from automatically validated test cases.

Formula / Method

effective overall heat transfer coefficient = (1 / (1 / (shell-side convective heat transfer coefficient * frost layer thermal resistance multiplier) + shell-side fouling resistance + tube wall conductive resistance + 1 / refrigerant)) * cop-based frost degradation factor

Formula family: formula_refrigeration_flooded_evaporator_shell_and_tube_heat_transfer_coefficient_frost_buildup_penalty_estimator

Variables

SymbolLabelRoleDescription
h_shell Shell-side convective heat transfer coefficient INPUT Shell-side convective heat transfer coefficient
h_tube Tube-side (refrigerant) boiling heat transfer coefficient INPUT Tube-side (refrigerant) boiling heat transfer coefficient
R_fouling_shell Shell-side fouling resistance INPUT Shell-side fouling resistance
R_tube_wall Tube wall conductive resistance INPUT Tube wall conductive resistance
f_frost Frost layer thermal resistance multiplier INPUT Frost layer thermal resistance multiplier
cop_penalty COP-based frost degradation factor INPUT COP-based frost degradation factor
U_eff Effective overall heat transfer coefficient OUTPUT Effective overall heat transfer coefficient

Calculation Steps

  1. Enter the shell-side convective heat transfer coefficient in W/(m^2*K).
  2. Enter the tube-side (refrigerant) boiling heat transfer coefficient in W/(m^2*K).
  3. Enter the shell-side fouling resistance in m^2*K/W.
  4. Enter the tube wall conductive resistance in m^2*K/W.
  5. Enter the frost layer thermal resistance multiplier in dimensionless.
  6. Enter the cop-based frost degradation factor in dimensionless.
  7. Step 1: Compute effective overall heat transfer coefficient.
  8. Read the effective overall heat transfer coefficient (W/(m^2*K)) from the results.

Engineering Summary

Calculate Flooded Evaporator Shell-and-Tube Heat Transfer Coefficient with Frost Penalty Estimator

Frequently Asked Questions

What does this calculator calculate?

The Flooded Evaporator Shell-and-Tube Heat Transfer Coefficient with Frost Penalty Estimator Calculator estimates Effective overall heat transfer coefficient based on the input parameters you provide

Why is shell-side convective heat transfer coefficient important in this calculation?

shell-side convective heat transfer coefficient is directly proportional to effective overall heat transfer coefficient. When you enter shell-side convective heat transfer coefficient in W/(m^2*K), the calculator uses it in the engineering formula to compute the output

How should I interpret the result effective overall heat transfer coefficient?

The calculator outputs effective overall heat transfer coefficient in W/(m^2*K). The result is computed directly from the input values using the defined engineering formula

What units should I use for the inputs?

Enter each value in the units shown next to the input field: Shell-side convective heat transfer coefficient (W/(m^2*K)), Tube-side (refrigerant) boiling heat transfer coefficient (W/(m^2*K)), Shell-side fouling resistance (m^2*K/W), Tube wall conductive resistance (m^2*K/W), Frost layer thermal resistance multiplier (dimensionless), COP-based frost degradation factor (dimensionless). Make sure all inputs use the specified units for consistent results

What assumptions does this calculator use?

This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment

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