-
Oct 11, 2018
The centrifugal chemical pump with specific speed ns of 130 and 150 is usually selected. The flow rate of the electric chemical pump should be 1.1 and 1.2 times of the rated flow of the chillers (1.1 for a single pump and 1.2 for two parallel pumps).The estimated loss per 100m pipe length is 5mH2O, pump head (mH2O): Hmax = P1 + P2 + 0.05L (1 + K). P1 is the water pressure drop of the evaporator of...