Description
Calculate supplied mean boil-off mass flow in kg/h and g/s.
Cryogenic calculations require explicit absolute-pressure and temperature bases, density conditions, inventory boundaries and calibration spans. Level signals need not equal volume, nominal input energy differs from cooling delivered, and apparent loss is an accounting residual. Supplied terms do not establish actual equipment condition or safe low-temperature operation.
Calculate supplied mean boil-off mass flow in kg/h and g/s.
When to use this tool
Use Helium Boiloff Mass Flow Unit when you already have massKilograms, elapsedHours and need to calculate supplied mean boil-off mass flow in kg/h and g/s.
How to use the tool and how it works
- Enter massKilograms, elapsedHours. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read kilogramsPerHour, gramsPerSecond. Use the output convention below.
Require massKilograms>=0 and elapsedHours positive/finite; kg/h=mass/hours, g/s=(mass/hours)/3.6.1
A kilogram is 1000 grams and an hour is 3600 seconds, so a kg/h rate is divided by 3.6 to obtain g/s.2
| Input field | Meaning and units | Accepted input |
|---|---|---|
| massKilograms | Mass Kilograms | Required. Finite number; minimum 0. |
| elapsedHours | Elapsed Hours | Required. Finite number; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| kilogramsPerHour | Kilograms Per Hour | Required. Finite number. |
| gramsPerSecond | kilogramsPerHour/3.6, a mean mass-flow conversion rather than volume flow. | Required. Finite number. |
{
"input": {
"massKilograms": 3.6,
"elapsedHours": 1
},
"output": {
"kilogramsPerHour": 3.6,
"gramsPerSecond": 1
}
}Limitations and assumptions
- This is a mean from supplied mass and time, not actual gas flow, liquid volume, heat leak, vent capacity or safe boil-off handling.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use verified instrument and inventory records with the complete thermophysical and equipment model. Include actual state, geometry, heat transfer, venting and operating limits when local calibration fractions, mean mass flows or nominal volumes cannot answer the engineering question.
References
Similar or alternative tools
- Gas Recovery Captured Mass Fraction
Calculate captured mass as a fraction of supplied released mass.
- Cryogenic Inventory Mass Volume Pair
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