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Časopis za procesnu tehniku i energetiku u poljoprivredi / PTEP
2009, vol. 13, iss. 1, pp. 19-22
article language: English
document type: Original Scientific Paper
published on: 06/10/2009
Estimation of an apricot (Prunus armeniaca) halves surface area
University of Novi Sad, Faculty of Agriculture, Department of Agricultural Engineering



Projekat Ministarstva nauke Republike Srbije, br. TR-20065


The surface area of any biomaterials is necessary data when heat and mass transfer are figure out. Two mathematical models for apricot halves surface area predicting are presented in the paper, based upon fruit dimensions estimation. The length, height and width of 30 apricots and stones samples have been measured. Additionally, the real surface area of 5 control fruit halves and stones were appraisaled too, by the help of narrow adhesive tapes. The first mathematical calculus is done according to assumption that apricot fruit shape is similar to ellipsoid. Therefore, this model has been used for counting an apricot halves surface area. The difference of surface area between predicting ellipsoid model results and real measured surface area values is 2%. When correlation matrix for apricot three dimensions applies, the confirmation of dependency between commodity heights with other two fruit dimensions is reached. That statement has been used for another mathematical model for apricot surface area creation. The advantage of second reorganized ellipsoid model is in simplicity, only one apricot dimension, height is necessary to be measured. An error which occurs when comparing second model results and measured surface area of apricot halves is 4.8%. It has been emphasized that second model is more practical useful, regardless of a larger results dispersion, therefore suitable for further usage.



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