evaporation independent constant temperature and humidity and air conditioning system, has the system is simple, easy to adjust, operation management convenient, saving energy etc. In the engineering design, according to the temperature and humidity of the laboratory accuracy requirement reasonable selection system, as far as possible the room load calculation and selection of matching detailed constant temperature and humidity unit.

In order to meet the accuracy requirement of the indoor constant temperature and humidity, constant temperature and humidity of air conditioning room air change rate, according to experience, ± 2 ℃ constant greenhouse, air change rate of about 10 to 15 times/h; Degree is obtai ℃ constant greenhouse, take a breath about 15 ~ 20 times the number/h; + /-0.5 ℃ constant greenhouse, air change rate of about 20 times/h >; + /-0.2 ℃ constant greenhouse, take a breath number > about 30 times/h;

Airflow organization desig