Abstract:<br />Thermal physics plays a crucial role in the post-harvest storage of field crops, as it helps manage temperature and humidity conditions, minimizing crop loss and prolonging shelf life. This article highlights the fundamental thermal principles and their applications in developing effective storage systems that maintain crop quality and reduce environmental damage risks.<br /><br />⸻<br /><br />Introduction<br /><br />The post-harvest phase is considered one of the most sensitive stages in the agricultural production chain, as environmental conditions directly affect the quality and safety of field crops such as grains and legumes. Thermal physics provides essential knowledge for the development of technical solutions that prevent post-harvest losses and improve storage conditions.<br /><br />⸻<br /><br />Thermal Physics and Storage Fundamentals<br /><br />Several physical factors govern the success of crop storage, especially:<br /> 1. Temperature Control:<br />Temperature directly affects the respiration rate of crops and the reproduction of microorganisms and insects. Lowering the temperature to optimal storage levels slows biological and chemical reactions, thus extending the storage life of the product.<br /> 2. Relative Humidity Regulation:<br />Field crops tend to absorb or release moisture depending on the surrounding environment. Thermal physics principles, including Dalton’s Law of Partial Pressures, are applied to design ventilation and air-conditioning systems that maintain humidity at safe levels, reducing the risk of spoilage and mold growth.<br /> 3. Heat Transfer Mechanisms:<br />Understanding heat transfer (conduction, convection, and radiation) is fundamental in preventing unwanted temperature fluctuations inside storage facilities. Thermal insulation and controlled airflow reduce the influence of external weather on stored crops.<br /><br />⸻<br /><br />Practical Applications of Thermal Physics in Storage<br /> 1. Thermal Insulation of Storage Facilities:<br />The architectural design of grain storage warehouses relies on heat transfer calculations to minimize energy exchange between the internal environment and the surrounding climate, maintaining a stable storage temperature.<br /> 2. Smart Ventilation Systems:<br />Engineers employ principles of natural and forced convection to circulate air efficiently inside storage areas, ensuring uniform temperature and humidity distribution and preventing heat accumulation in localized zones.<br /> 3. Crop Cooling Technologies:<br />Thermal physics is the foundation of modern cooling systems, such as vapor-compression refrigeration cycles, which are used to lower storage temperatures, especially in hot climates, to slow down biological degradation.<br /> 4. Thermo-Hygrometric Monitoring:<br />Thermal sensors (thermo-hygrometers) based on physical thermodynamic properties continuously measure temperature and relative humidity, feeding data to automated systems that adjust ventilation and cooling for optimal storage conditions.<br /><br />⸻<br /><br />Conclusion<br /><br />The application of thermal physics in the storage of field crops is essential for protecting agricultural yields and supporting global food security. By improving storage techniques and reducing post-harvest losses, thermal management solutions play a vital role in preserving crop quality. As technological innovations advance, the integration of smart thermal monitoring and control systems will become increasingly critical in the design of efficient and sustainable storage facilities.<br /><br />"AL_mustaqbal University is the first university in Iraq"<br/><br/><a href=https://uomus.edu.iq/Default.aspx target=_blank>al-mustaqbal University Website</a>