Method for calculating energy conservation rate of variable-frequency thermal discharging fan in refrigerating season based on day-by-day adjustment

The invention discloses a method for calculating the energy conservation rate of a variable-frequency thermal discharging fan in a refrigerating season based on day-by-day adjustment. The method is characterized in that an energy conservation rate calculating formula of the variable-frequency thermal discharging fan in a single month in the refrigerating season is determined, wherein in the formula, pes is the single-month energy conservation rate of the variable-frequency thermal discharging fan in the refrigerating season, and the unit is %; d(m) is the single-month cumulative number of days; p(VVVF.j)=f(i)/50 is the frequency conversion percentage, and f(i) and 50 are a variable frequency value and a power frequency value correspondingly; i is equal to 1, i is equal to n, and the frequency conversion percentage starts from the total variable-frequency adjusting section number; and d(i) is the number of days of the thermal discharging fan operating under the J(i) variable frequency value in the refrigeratin