should not be more than the finished rating of the cooling tower water, such as cycle water amounted to less than 80% of the rated water, deal with the selected cooling tower water distribution system for checking.8) the number of cooling tower should match the air conditioning refrigeration unit number.9) according to the urban regional environmental noise standard GB3096-1993 of the civil construction noise control requirements, can be calculated by the space of noise attenuation, choose low