Abstract:  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.

Key words: temperature and humidity, numerical simulation, industrial aquaculture, operation energy consumption

摘要： 水产养殖车间高湿度环境易降低车间工程和设施使用寿命。为冬季水产养殖车间提供温湿度联合控制策略，有效降低车间湿度以及通风系统运行能耗，对水产养殖车间试验平台进行热湿环境数值模拟，结合试验数据验证了物理模型的准确性，并对实际水产养殖车间自然通风、机械通风以及机械通风结合供暖3种工况下车间内温湿度分布和结露状态进行研究，提出热湿控制策略，使水产养殖车间相对湿度降低至60%~80%。研究表明机械通风可以有效降低车间内湿度，减少车间内壁面结露状况；机械加热通风结合供暖情况下，室内温度均匀提升，仅在夜间开启机械加热通风，有效降低车间湿度，并且降低运行成本；无供暖情况下，间歇机械通风23 min可达到除湿效果并且能耗较低；仅有机械加热通风情况下，采用热湿空气全热回收，热回收效率可达到71.7%，不仅降低车间湿度，并且明显降低运行能耗。该研究为工厂化养殖车间空调系统除湿节能设计以及温湿度智能化控制研究提供参考。

关键词: 温湿度；数值模拟；工厂化养殖；运行能耗 ,