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Hand Dryer Versus Paper Towel Scenario Calculator — result sheet
Compare supplied energy and paper emissions for repeated hand-drying events.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: Dryer emissions=uses×kWh/use×electricity factor; paper emissions=uses×grams/use×paper factor.
Both systems use supplied lifecycle factors, and the result does not claim that one choice is universal across facilities.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Hand-drying events — minimum 0; maximum 1000000000
- Dryer energy per use — minimum 0; maximum 1000
- Electricity CO2 per kWh — minimum 0; maximum 1000000
- Paper grams per use — minimum 0; maximum 1000000
- Paper CO2 per gram — minimum 0; maximum 1000000
Worked example
| Input | Value |
|---|---|
| Hand-drying events | 1000 |
| Dryer energy per use | 0.002 |
| Electricity CO2 per kWh | 0.4 |
| Paper grams per use | 3 |
| Paper CO2 per gram | 1.5 |
Dryer =0.8 units; paper =4,500 units.
Assumptions and limits
- All factors use compatible emission units and each event has the same inputs.
- Water, maintenance, manufacture, disposal, hygiene, and electricity timing are outside the supplied factors.
- Facility requirements, accessibility, procurement, and waste policy are not modeled.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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