Air conditioning system design for optics and thermotics building in National Institute of Metrology P. R. China experimental base

According to the different laboratory functions and requirement for temperature precision, divides the laboratories into different regions in which the air conditioning systems are controlled separately. The four-pipe system of supply and return air is adopted for the rooms to meet the needs of air conditioning precision and the heating or cooling supply in winter. The outdoor air is fully utilized as the cold source in winter and transition seasons. The result of a test in three consecutive seasons shows a satisfactory accuracy in temperature and humidity control and reliable and steady operation of the system.