AFUE - annual fuel utilization efficiency AHJ – authority having jurisdiction AHRI – American Heating and Refrigeration Institute AHVAC – air-side HVAC ANSI – American National Standards Institute ASHP – air-source heat pump ASHRAE – American Society of Heating, Refrigerating and Air-Conditioning Engineers BBREC – baseline building regulated energy cost BBUEC – baseline building unregulated energy cost BHP – brake horsepower CF – compliance form CFM – cubic feet per minute CHP – combined heat and power CV – constant volume DCV – demand control ventilation Ec - combustion efficiency ECB – Energy Cost Budget Method described in ASHRAE Standard 90.1 Section 11 EFLH – effective full load hours Et - thermal efficiency ERV – energy recovery ventilator DOAS – dedicated outdoor air system HVAC – Heating, Ventilation and Air Conditioning IECC – International Energy Iesna保护法 - 北美工程学会LE - 照明,外部