HVAC energy consumption model of existing buildings based on dimension analysis

Analyses the major influencing factors of HVAC energy consumption of existing buildings, establishes the energy consumption model reflecting the relationship between the energy consumption and related influencing factors based on the dimension analysis theory, and obtains the mathematical analytic formula of the energy consumption. Validated by an actual building as example, the deviation between the calculated value of the energy consumption in 2007 and the actual value is in 4%.