Estimation of central air conditioning water pipe diameter

Selection of condensate pipe: Generally, the nominal diameter of the condensate pipe can be approximately selected based on the cooling load Q (kW) of the unit according to the following data.

The relationship between pipe diameter and load

The condensed water generated during the operation of fan coil units, integral air conditioners, and modular air conditioning units must be promptly discharged.

The design of condensate discharge pipelines should pay attention to the following matters:

Horizontal pipelines should maintain a slope of no less than 0.3% along the direction of water flow; And no areas with accumulated water are allowed. When using polyvinyl chloride plastic pipes, it is generally not necessary to perform insulation and vapor barrier treatment to prevent condensation. When using galvanized steel pipes, insulation layers should usually be installed.