Energy conservation transformation of primary return air of all-air air conditioning system

To improve the energy efficiency of the system, transforms the dew point supply air system and reheat supply air system, and puts forwards a transformed system. Presents the air handling process of the three systems, and analyses with a practical project. The results show that the transformed system can satisfy the supply air temperature difference set values without reheat energy consumption and utilize the high temperature cold source, and thus have better energy efficiency.