The experimental study on the secondary pump control of central air-conditioner chilled water system

The secondary pump of central air-conditioner chilled system is the important equipment that can save energy, the control quality to the secondary pump will affect the energy-saving effect and stability of central air-conditioner. The traditional PID and single neuron adaptive PID separately is used to control the secondary pump in the pressure difference control experiments in this article. The experiment results show that traditional PID control has faster response in the period of dynamic responses and the single neuron adaptive PID control has less steady-state errors in the steady period. Because less steady-state errors cannot lead to larger temperature fluctuation which makes sure the comfort in the air-conditioning room, the single neuron adaptive PID is more suitable for the secondary pump control than traditional PID.