Psychrometric Ratio Calculator
Declared psychrometric heat/mass transfer coefficient ratio under independently matched unit convention; not assume universalLewisrelation or air properties. Actual independently established compatible SI units/model context; conditional arithmetic, not code compliance, engineering design or safe operation approval.
Description
A psychrometric coefficient ratio depends on the definitions and units of heat and mass transfer coefficients.
A psychrometric coefficient ratio depends on the definitions and units of heat and mass transfer coefficients.1
This tool divides supplied matched coefficients without imposing a universal Lewis relation.
When to use Psychrometric Ratio Calculator
Use this tool to calculate supplied matched coefficients without imposing a universal Lewis relation.
How to use Psychrometric Ratio Calculator and how it works
- Prepare callerMatchedConvectiveHeatTransferCoefficient, callerMatchedMassTransferCoefficient, with the units, conventions and assumptions below.
- Enter the required fields and run Psychrometric Ratio Calculator.
- Read result.value using the output definitions below.
- Correct any rejected inputs and rerun; interpret the result within the stated model and its assumptions.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| callerMatchedConvectiveHeatTransferCoefficient | Caller Matched Convective Heat Transfer Coefficient. Use the units and matching context stated in the calculation below. | number | Required; strictly positive; finite; other constraints below |
| callerMatchedMassTransferCoefficient | Caller Matched Mass Transfer Coefficient. Use the units and matching context stated in the calculation below. | number | Required; strictly positive; finite; other constraints below |
Supply positive heat-transfer and mass-transfer coefficients on the intended compatible convention. Return their quotient, with dimensions determined by those coefficients. This ratio does not itself compute a psychrometric chart state or establish a Lewis relation.
ratio=heatTransferCoefficient/massTransferCoefficient Apply the input ordering, units and branch conditions stated above.
| Output field | Meaning | Value type |
|---|---|---|
| result | Object containing the calculated or selected fields below. | object |
| result.value | Heat-transfer to mass-transfer coefficient quotient in the supplied compatible unit convention. | number |
{
"input": {
"callerMatchedConvectiveHeatTransferCoefficient": 4,
"callerMatchedMassTransferCoefficient": 2
},
"output": {
"result": {
"value": 2
}
}
}Limitations and assumptions
The calculation uses the supplied observations and model inputs. It does not collect measurements, select a reference population or coefficient, or establish that the model applies to the actual case. The stated branch conditions and output units remain part of the result.
All fields require explicit values. Unexpected fields, wrong types, nonfinite numbers and sparse arrays are rejected. Alignment, bounds and supported-token rules are explained above; extremely large inputs or nonfinite results can also fail. Input errors differ from successful false comparisons, unavailable-domain flags and empty match lists.
Alternative or Complementary methods
Use Building U-Value Calculator for a complementary operation: A plane multilayer U-value is the reciprocal of total areal thermal resistance, including specified surface films.
Use Building Infiltration Calculator for a complementary operation: An observed air-change estimate combines building air volume with a matched rate per hour.
References
-
Psychrometric Ratio Calculator — tool.io
Similar or alternative tools
- Building U-Value Calculator
A plane multilayer U-value is the reciprocal of total areal thermal resistance, including specified surface films.
- Building Infiltration Calculator
An observed air-change estimate combines building air volume with a matched rate per hour.