Hot air drying is a method used to remove moisture from various materials, such as food, textiles, and wood. This process involves circulating warm air around the items, which helps evaporate the moisture. The temperature and airflow can be adjusted to suit different materials, ensuring effective drying without damaging them. This technique is commonly used in industries like agriculture and manufacturing. For example, dehydrated fruits and vegetables are often produced using hot air drying to extend shelf life. Additionally, wood drying is essential in construction to prevent warping and cracking in finished products.