An air economizer in commercial buildings in suitable climates is intended primarily to do what when outdoor air enthalpy is favorable?
Choices
- (A) Increase compressor lift always
- (B) Use outdoor air to reduce mechanical cooling and save energy (when ODA condition meets spec)
- (C) Pressurize fire stairs
- (D) Isolate refrigerant circuit
Correct answer: (B)
Use outdoor air to reduce mechanical cooling and save energy (when ODA condition meets spec)
Explanation
90.1/Title 24 style: enthalpy/dry-bulb economizer logic to reduce cooling kWh.