LN2 Dewar Hold-Time Estimator
Estimate refill intervals from static hold time, fill level, access frequency, ambient temperature, and safety reserve.
LN2CryogenicRefill Schedule
Tool details, related tools, and citation
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Load example LN2 Dewar Hold-Time Estimator data to see the full workflow
Dewar assumptions
Refill plan
Adjusted hold
66 d
Refill target
50 d
Evap multiplier
1.09x
Use the interval as a refill planning target, then verify against observed boil-off.
- LN2 refill planning
- Cryogenic storage sizing
- Access-policy review
Don't use for
- Validated hold-time claims without observed boil-off data for the actual vessel
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