Knowledge!Basic requirements for HVAC design
1. The ventilation of the building should firstly adopt the natural ventilation method which does not use power, does not consume energy and has good effect. When natural ventilation can not meet the requirements, mechanical ventilation should be used, or natural ventilation and mechanical ventilation combined with the composite ventilation; the following cases should be used mechanical ventilation: ①.the emission of a large amount of residual heat, residual humidity; ②.the emission of odors and hazardous gases in the premises; [...]