ANALYTICAL DETERMINATION OF THE MASS OF FOLIAGE RESIDUES REMAINING ON CARROT ROOT CROWNS AFTER CLEANING WITH FLEXIBLE BLADES
АНАЛІТИЧНЕ ВИЗНАЧЕННЯ МАСИ ЗАЛИШКІВ ГИЧКИ, ЩО ЗАЛИШАЄТЬСЯ НА ГОЛОВКАХ КОРЕНЕПЛОДІВ МОРКВИ ПІСЛЯ ОЧИЩЕННЯ ГНУЧКИМИ ЛОПАТЯМИ
DOI : https://doi.org/10.35633/inmateh-78-115
Authors
Abstract
This study developed an analytical procedure for estimating the mass of carrot foliage residues remaining on the crowns of carrot root crops after cleaning with flexible blades. The proposed model relates the mass removed during a single blade contact to the residence time of the root crown within the cleaning zone, the average effective number of blade contacts, and the number of plants per metre of row. The calculations were performed using representative parameters of carrot root crown geometry, residue height, residue layer density, blade width, blade radius, post-impact contact duration, and plant spacing. A response surface was generated for practical ranges of cleaner forward speed and blade rotational frequency and subsequently approximated using a second-order regression model. The results showed that the mass of remaining residues decreases nonlinearly with increasing blade rotational frequency and increases with higher forward speed because the residence time within the cleaning zone becomes shorter. The most intensive cleaning was achieved by combining lower forward speed with increased blade rotational frequency; therefore, increasing the rotational frequency is advisable only together with an appropriate limitation of forward speed. The developed model provides a practical basis for selecting the operating parameters of a flexible-blade cleaner and explains why flexible blades can compensate more effectively for reduced contact time than technologies based solely on passive or single-contact residue removal.
Abstract in Ukrainian



