Low-Temperature Aeration Technology Effectively Solves Summer Grain Heating and Mildew Risks
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Low-Temperature Aeration Technology Effectively Solves Summer Grain Heating and Mildew Risks

31-07-2026

With the arrival of high-temperature and humid summer seasons, grain storage safety enters a high-risk period. Stored corn, wheat, rice and feed raw materials are prone to internal heat accumulation, local temperature rise, moisture migration and mold breeding under continuous high ambient temperature. Traditional natural ventilation and manual grain turning methods are inefficient, unable to eliminate deep grain pile heat, resulting in increased grain spoilage rate and economic losses for grain depots and feed mills. As a professional enterprise focusing exclusively on raw grain and feed storage equipment, Liaoning Qiushi Silo Equipment Engineering Co., Ltd. promotes professional low-temperature aeration technology to solve summer grain storage pain points fundamentally, realizing zero-mildew and low-loss grain preservation in hot seasons.

low-temperature aeration

Summer grain heating is the core cause of most storage quality deterioration. After long-term stacking, grain piles form dense internal structures. When the external temperature rises rapidly, the temperature difference between inside and outside the silo causes moisture migration and heat accumulation in the middle and lower layers of grain piles. Once the local temperature exceeds 28°C and humidity reaches over 65%, microorganisms and insect eggs begin to multiply rapidly, leading to grain caking, yellowing, mildew and even spontaneous heating. This hidden danger cannot be eliminated by surface ventilation alone, becoming a major difficulty in summer grain management for global agricultural enterprises.


Different from conventional fixed-time ventilation, low-temperature aeration technology adopts intelligent temperature difference linkage operation logic. The system automatically monitors real-time ambient temperature, silo internal grain temperature and air dew point, and only starts ventilation when the external cold air condition is superior to the internal grain environment. Through low-speed, low-temperature and large-air-volume circulating ventilation, the technology gradually and evenly replaces the hot and humid air inside the grain pile, discharging deep accumulated heat without causing grain moisture loss or cracking.

The professional low-temperature aeration system customized by Liaoning Qiushi is perfectly adapted to high-temperature summer storage scenarios. Equipped with multi-layer three-dimensional temperature sensors, it captures tiny temperature differences of each grain layer in real time. The system automatically judges the optimal ventilation window at night and in cool periods, avoiding invalid ventilation in high-temperature daytime. The underground uniform air duct layout forms an all-round circulating airflow field, completely eliminating temperature dead zones that are common in traditional silos.


This technological solution brings obvious practical benefits for summer grain storage. Field test data shows that low-temperature aeration can keep the internal grain pile temperature stably below 22°C throughout summer, effectively inhibiting the reproduction of Aspergillus and grain pests. Compared with traditional management methods, it reduces summer grain loss rate by more than 75% and completely avoids frequent manual grain turning, cutting summer storage labor costs by over 60%. Meanwhile, low-temperature constant storage delays grain aging, maintaining the original color, taste and commercial value of raw grains.

Suitable for all types of steel silo structures, low-temperature aeration technology can be widely used in long-term storage of corn, wheat, paddy rice and feed raw materials. Whether for large-capacity flat-bottom silo groups or medium and small modular silos, the system can be adaptively configured and intelligently upgraded. For high-moisture newly-harvested grain and long-term reserved grain, it provides targeted low-temperature regulation solutions to ensure stable grain quality throughout hot and humid seasons.


Against the background of increasingly stringent global grain safety standards, low-temperature and green grain storage has become an inevitable industry trend. Liaoning Qiushi Silo Equipment Engineering Co., Ltd. will continue to optimize low-temperature aeration systems and intelligent grain storage technologies, help global grain and feed enterprises solve seasonal storage risks, and continuously promote high-quality and low-loss development of the modern grain storage industry.


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