冷风机安装相关知识（Cold air blower installation related knowledge）.doc

冷风机安装相关知识（Cold air blower installation related knowledge） Companies adhering to the customer first, forge ahead business philosophy, adhere to the customer first principle, to provide our customers with quality services. Your patronage is welcome! Http:///installation.asp Roof installation, roof installation, exterior wall installation, window installation, landing installation, mobile I. selection of air conditioning units 1. Theoretical calculation: According to the conventional air conditioning cooling load calculation formula is obtained by using the room cold wet load and air quantity, types and units according to the selection of various types of environmental protection air conditioning refrigeration may provide the required environmental protection air conditioning, the total amount of refrigeration of the selected environmental protection air conditioning must be greater than the design room requirements of refrigeration, the margin is generally consider 10%. 2, empirical calculation: (1) general environment requires ventilation volume 25 - 30 times / hour; (2) crowded public places require ventilation volume 30 - 40 times / hour; (3) the production workshop with heating equipment requires ventilation volume of 40 - 50 times / hour; (4) in the humid southern areas, the number of ventilation increases, while the hotter and drier northern areas can reduce the number of ventilation. Environmental protection air conditioning should choose the number more than required ventilation frequency / cooling room volume * design selected environmental protection air conditioning single actual air volume. Number of units used: Site volume (V) = indoor area (M2) * height below the air supply (m) The frequency of ventilation (per hour) = total air environmental protection air conditioning (m3/h) / indoor area (M2) * outlet below the height (m)]; Number of units used (N) = site volume * ventilation times / selected unit volume Two, environmental protection air conditioning