Cryogenic Engineering

Cryogenic LNG Storage Tank Boil-Off Mass Flow Rate via Phase-Change Energy Balance calculator

Cryogenic LNG Storage Tank Boil-Off Mass Flow Rate via Phase-Change Energy Balance engineering calculator.

Quick Answer

Calculate Cryogenic LNG Storage Tank Boil-Off Mass Flow Rate via Phase-Change Energy Balance

Calculator

Boil-Off Mass Flow Rate (kg⁄s)
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Result Interpretation

Cryogenic LNG Storage Tank Boil-Off Mass Flow Rate via Phase-Change Energy Balance calculator computes Boil-Off Mass Flow Rate in kg/s using the defined engineering formula and the input values provided. Boil-Off Mass Flow Rate is expressed in kg/s. No universal acceptance threshold is defined by this calculator.

Worked Example

Verified calculation

Given:

  • Total Heat Ingress Rate = 12000
  • LNG Latent Heat of Vaporization = 510000
  • Thermal Efficiency Factor (Boil-Off Utilization) = 1

Expected Result:

  • Boil-Off Mass Flow Rate = 0.023529411764706

Engineering Interpretation:

Under the given input conditions, the calculated result is: Boil-Off Mass Flow Rate = 0.023529411764706 kg/s.

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

boil-off mass flow rate = total heat ingress rate / (lng latent heat of vaporization * Boil-Off Utilization)

Formula family: formula_cryogenic_lng_storage_tank_boil_off_rate_mass_flow_calculator

Variables

SymbolLabelRoleDescription
Q_total Total Heat Ingress Rate INPUT Total Heat Ingress Rate
h_fg LNG Latent Heat of Vaporization INPUT LNG Latent Heat of Vaporization
eta_thermal Thermal Efficiency Factor (Boil-Off Utilization) INPUT Thermal Efficiency Factor (Boil-Off Utilization)
boil_off_mass_flow_rate Boil-Off Mass Flow Rate OUTPUT Boil-Off Mass Flow Rate

Calculation Steps

  1. Enter the total heat ingress rate in W.
  2. Enter the lng latent heat of vaporization in J/kg.
  3. Enter the thermal efficiency factor (boil-off utilization) in 1.
  4. Step 1: Compute boil-off mass flow rate.
  5. Read the boil-off mass flow rate (kg/s) from the results.

Engineering Summary

Calculate Cryogenic LNG Storage Tank Boil-Off Mass Flow Rate via Phase-Change Energy Balance

Frequently Asked Questions

What does this calculator calculate?

The Cryogenic LNG Storage Tank Boil-Off Mass Flow Rate via Phase-Change Energy Balance calculator estimates Boil-Off Mass Flow Rate based on the input parameters you provide

Why is total heat ingress rate important in this calculation?

total heat ingress rate is directly proportional to boil-off mass flow rate. When you enter total heat ingress rate in W, the calculator uses it in the engineering formula to compute the output

How should I interpret the result boil-off mass flow rate?

The calculator outputs boil-off mass flow rate in kg/s. To convert to kg/h, multiply the result by 3600. To convert to g/s, multiply by 1000. 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: Total Heat Ingress Rate (W), LNG Latent Heat of Vaporization (J/kg). 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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