Quick Answer
Calculate Air-Side Economizer Effectiveness (Energy Balance Ratio)
Calculator
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Find Engineering Solutions →Result Interpretation
Air-Side Economizer Effectiveness (Energy Balance Ratio) calculator computes Economizer Effectiveness in dimensionless using the defined engineering formula and the input values provided. Economizer Effectiveness is expressed in dimensionless. No universal acceptance threshold is defined by this calculator.
Worked Example
Verified calculation
Given:
- Supply Air Inlet Temperature = 293.15
- Supply Air Outlet Temperature = 303.15
- Exhaust Air Inlet Temperature = 313.15
Expected Result:
- Economizer Effectiveness = 0.5
Engineering Interpretation:
Under the given input conditions, the calculated result is: Economizer Effectiveness = 0.5 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 = (supply air outlet temperature - supply air inlet temperature) / (exhaust air inlet temperature - supply air inlet temperature)Formula family: formula_energy_economizer_effectiveness_calculator_for_air_side_heat_recovery
Variables
| Symbol | Label | Role | Description |
|---|---|---|---|
| T_supply_in | Supply Air Inlet Temperature | INPUT | Supply Air Inlet Temperature |
| T_supply_out | Supply Air Outlet Temperature | INPUT | Supply Air Outlet Temperature |
| T_exhaust_in | Exhaust Air Inlet Temperature | INPUT | Exhaust Air Inlet Temperature |
| economizer_effectiveness | Economizer Effectiveness | OUTPUT | Economizer Effectiveness |
Calculation Steps
- Enter the supply air inlet temperature in K.
- Enter the supply air outlet temperature in K.
- Enter the exhaust air inlet temperature in K.
- Step 1: Compute economizer effectiveness.
- Read the economizer effectiveness (dimensionless) from the results.
Engineering Summary
Calculate Air-Side Economizer Effectiveness (Energy Balance Ratio)
Frequently Asked Questions
What does this calculator calculate?
The Air-Side Economizer Effectiveness (Energy Balance Ratio) calculator estimates Economizer Effectiveness based on the input parameters you provide
Why is supply air inlet temperature important in this calculation?
supply air inlet temperature is used directly in the calculation of economizer effectiveness. Its effect on the result depends on the complete formula and the values of the other inputs.. When you enter supply air inlet temperature 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: Supply Air Inlet Temperature (K), Supply Air Outlet Temperature (K), Exhaust Air Inlet Temperature (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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