Quick Answer
Calculate Chemical Storage Tank Vent Orifice Area for Thermal Expansion and Fire Exposure
Calculator
Result Interpretation
Chemical Storage Tank Vent Orifice Area for Thermal Expansion and Fire Exposure calculator computes Required Vent Orifice Area in m^2 using the defined engineering formula and the input values provided.
Worked Example
Verified calculation
Given:
- Discharge Coefficient = 0.62
- Total Required Vapor Relief Flow Rate = 5
- Pressure Differential Across Vent Orifice = 800
- Vapor Density at Relief Conditions = 2.8
Expected Result:
- Required Vent Orifice Area = 0.12048675497323
Engineering Interpretation:
Under the given input conditions, the calculated result is: Required Vent Orifice Area = 0.12048675497323 m^2.
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
required vent orifice area = total required vapor relief flow rate / (discharge coefficient * vapor density at relief conditions * sqrt(2 * pressure differential across vent orifice / vapor density at relief conditions))Formula family: formula_chemical_chemical_storage_tank_vent_sizing_thermal_fire_expansion
Variables
| Symbol | Label | Role | Description |
|---|---|---|---|
| Q_total | Total Required Vapor Relief Flow Rate | INPUT | Total Required Vapor Relief Flow Rate |
| C_d | Discharge Coefficient | INPUT | Discharge Coefficient |
| rho_vapor | Vapor Density at Relief Conditions | INPUT | Vapor Density at Relief Conditions |
| delta_P | Pressure Differential Across Vent Orifice | INPUT | Pressure Differential Across Vent Orifice |
| vent_orifice_area | Required Vent Orifice Area | OUTPUT | Required Vent Orifice Area |
Calculation Steps
- Enter the total required vapor relief flow rate in kg/s.
- Enter the discharge coefficient in dimensionless.
- Enter the vapor density at relief conditions in kg/m^3.
- Enter the pressure differential across vent orifice in Pa.
- Step 1: Compute required vent orifice area.
- Read the required vent orifice area (m^2) from the results.
Engineering Summary
Calculate Chemical Storage Tank Vent Orifice Area for Thermal Expansion and Fire Exposure
Frequently Asked Questions
What does this calculator calculate?
The Chemical Storage Tank Vent Orifice Area for Thermal Expansion and Fire Exposure calculator estimates Required Vent Orifice Area based on the input parameters you provide
Why is total required vapor relief flow rate important in this calculation?
total required vapor relief flow rate is directly proportional to required vent orifice area. When you enter total required vapor relief flow rate in kg/s, the calculator uses it in the engineering formula to compute the output
How should I interpret the result required vent orifice area?
The calculator outputs required vent orifice area in m^2. 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 Required Vapor Relief Flow Rate (kg/s), Discharge Coefficient (dimensionless), Vapor Density at Relief Conditions (kg/m^3), Pressure Differential Across Vent Orifice (Pa). 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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