Online comparison of energy efficiency between variable volume and constant volume cooling water systems of central air conditioning

It is controversial whether the variable volume cooling water system in central air conditioning saves energy. Builds an online experimental comparison platform by the high efficient air conditioning automatic control system of a project. The results show that the energy efficiency of variable volume cooling water system is higher than that of constant volume system and the actual operation effect of variable volume operation mode is better. It is feasible to compare the energy efficiency of different operation modes by the automatic control platform of the refrigeration system.