The high humidity environment in aquaculture workshops reduces the service life of workshop engineering and facilities. The high - humidity environment in aquaculture workshops present a significant challenge to equipment durability, frequently resulting in metal corrosion and mold growth. In particular, most industrial aquaculture workshops are steel - structured. Condensation on the steel frames leads to corrosion of the steel structures, which not only affects the aesthetics and service life of the workshops but also causes pollution to the aquaculture water quality. However, there is a lack of research on the temperature and humidity distribution and condensation under winter operating conditions in actual aquaculture workshops. This study provides a combined temperature - humidity control strategy for aquaculture workshops in winter, reducing the humidity in the workshop and the operating energy consumption of the ventilation system effectively. The accuracy of the numerical model was verified in this study through actual measured data of thermal environment in the experimental platform of aquaculture workshop. Thermal and humid environment and condensation in an aquaculture workshop in the condition of natural ventilation, mechanical ventilation and mechanical ventilation combined with heating are being investigated, and environmental control measures is proposed. The appropriate relative humidity range for aquaculture workshops is 60% to 80%. The study shows that the humidity of workshop and condensation on the inner wall can be reduced in the condition of mechanical ventilation. In the condition of mechanical ventilation combined with heating, indoor temperature can be increased uniformly, humidity can be reduced effectively in the workshop in winter, and heat consumption and operating costs can be reduced. The temperature and humidity monitoring points in the workshop are located at a height of 3 - 4 meters, providing a basis for the temperature and humidity monitoring positions in industrialized aquaculture. Intermittent ventilation for 23 minutes can achieve the effect of low - energy - consumption dehumidification. By adopting total heat recovery of thermal-humid air, through calculating the total heat recovery of mechanical ventilation in the actual workshop in winter, the heat recovery efficiency reaches 71.7%. The conclusions of this study have laid a research foundation for the dehumidification and energy - saving design of the air - conditioning system in industrialized aquaculture workshops, as well as the intelligent control of temperature and humidity.
