System for controlling the environment of constant temperature and humidity type closed factory for growing plants and control method of the same

摘要

According to the present invention, an environment control facility for a closing type plant factory can save energy while maintaining an optimal environment for plant production for manufacturing a medicine through the introduction of an appropriate external air, and can provide plants and an operator with a pleasant environment in a daytime mode. In addition, the introduction of external air is controlled in consideration of the concentration of CO_2 in the daytime mode in which the plant has photosynthesis, and cooling is performed using the external air due to non-CO_2 effect in a nighttime mode, thereby saving energy. Furthermore, when the indoor concentration of CO_2 is in the range between upper and lower limits, the introduction of the external air is controlled by the enthalpy difference of indoor and outdoor air, thereby introducing proper external air and saving energy through the cooling using the external air.