Quick Answer
Calculate Economizer Effectiveness Calculator for Air-Side Heat Recovery
Calculator
Result Interpretation
Economizer Effectiveness Calculator for Air-Side Heat Recovery Calculator computes Economizer effectiveness in dimensionless using the defined engineering formula and the input values provided.
Worked Example
Verified calculation
Given:
- Indoor air return temperature before economizer = 298.15
- Outdoor air inlet temperature before economizer = 283.15
- Outdoor air supply temperature after economizer = 292.15
Expected Result:
- Economizer effectiveness = 0.4
Engineering Interpretation:
Under the given input conditions, the calculated result is: Economizer effectiveness = 0.4 dimensionless.
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
economizer effectiveness = (outdoor air supply temperature after economizer - indoor air return temperature before economizer) / (outdoor air inlet temperature before economizer - indoor air return temperature before economizer)Formula family: formula_energy_economizer_effectiveness_calculator
Variables
| Symbol | Label | Role | Description |
|---|---|---|---|
| T_oo | Outdoor air supply temperature after economizer | INPUT | Outdoor air supply temperature after economizer |
| T_io | Indoor air return temperature before economizer | INPUT | Indoor air return temperature before economizer |
| T_oi | Outdoor air inlet temperature before economizer | INPUT | Outdoor air inlet temperature before economizer |
| result | Economizer effectiveness | OUTPUT | Economizer effectiveness |
Calculation Steps
- Enter the outdoor air supply temperature after economizer in K.
- Enter the indoor air return temperature before economizer in K.
- Enter the outdoor air inlet temperature before economizer in K.
- Step 1: Compute economizer effectiveness.
- Read the economizer effectiveness (dimensionless) from the results.
Engineering Summary
Calculate Economizer Effectiveness Calculator for Air-Side Heat Recovery
Frequently Asked Questions
What does this calculator calculate?
The Economizer Effectiveness Calculator for Air-Side Heat Recovery Calculator estimates Economizer effectiveness based on the input parameters you provide
Why is outdoor air supply temperature after economizer important in this calculation?
outdoor air supply temperature after economizer is directly proportional to economizer effectiveness. When you enter outdoor air supply temperature after economizer in K, the calculator uses it in the engineering formula to compute the output
How should I interpret the result economizer effectiveness?
The calculator outputs economizer effectiveness in dimensionless. 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: Outdoor air supply temperature after economizer (K), Indoor air return temperature before economizer (K), Outdoor air inlet temperature before economizer (K). 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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