![]() ![]() The device is calibrated in a wind tunnel in a measuring range of 0–1.3 m/s. Battery and data logger are mounted inside the spheres. In the free space between the spheres, silicon diodes are fixed for the airflow measurement based on a calorimetric principle. It consists of four interconnected plastic spheres with 80 mm diameter each, adapted to the size of apple fruit. ![]() A new sensing device (ASL, Air speed logger) is developed for omnidirectional measurement of air speed between fruit or vegetables inside storage bins or in bulk. Therefore, knowledge about airflow next to the product is important to plan the layout of cold stores adapted to the requirements of the products. The design of storage facilities influences the air speed in the surrounding of the product. In cold storage facilities of fruit and vegetables, airflow is necessary for heat removal.
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