Abstract:

Addition coefficients in ventilation and air conditioning equipment selection are key factors that influence the selection of the ventilation and air conditioning system. The characteristics and rationality of the addition coefficients in ventilation and air conditioning equipment selection are analyzed by studying the addition coefficient values provided in the existing codes, handbooks and technical measures. Meanwhile, the energy consumption of the ventilation and air conditioning equipment with different addition coefficients are calculated, the causes for the modification of the parameters of the ventilation and air conditioning equipment, as well as the influence of the interrelations among the parameters on the modification, are analyzed, and main parameters to be modified and the corresponding addition coefficients are proposed.

Key words: urban rapid rail transit, ventilation and air conditioning equipment, addition coefficient selection in equipment selection