Considerations in energy efficient design of HVAC systems

While HVAC systems take up a considerable portion of the total energy consumed by a building, the functional requirement seems to be only kept in the designers’ mind and the energy efficiency be ignored in HVAC system designing until nowadays. By some case studies, points out some mistaken ideas on design of the HVAC system based on energy efficiency. Puts forward some thoughts of energy saving design needing more special attention. Discusses the design methods of HVAC systems based on energy efficiency.