Abstract
This paper analysis the operational electricity consumption of 2 office buildings in campus with VRF and centralized air conditioning system respectively, according to the monitoring data derived from a building energy monitoring and management system. Results show that both two air conditioning systems have great potential for energy saving, and the adjustability of VRF air conditioning system is better than that of centralized air conditioning system. Finally, the main effective factors of energy saving in the operation process of two air conditioning systems are pointed out.
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