e, nearly no other controls me thod. This research topic will abandon the farmer control plan, will recognize, the servo-control system theory, the intelligence c entral system theory take the model as the foundation, will unify with the central air conditioning main engine re fri geration technology and the cold intermediary circulatory system c ontrol, take the frequency conversion technology as the assistance me thod , the reali z ation central air conditioning entire system whole coordination movement and the overall pe rfor m anc e optimization. This research is the air conditioning energy conservation new idea, has represented the energy conservation technology recent deve lop me nt tendency. (1)C irculatory system energy cons erv ation: By the syst em angle, through to the term inal