Influence of moisture on external friction coefficient and basic physical properties of Astoria variety wheat grain

• Autorzy: Markowska A. , Warechowska M. , Warechowski J.
• Języki publikacji: EN

Abstrakty

EN

This paper analyzed the effect of moisture content on selected physical properties of Astoria variety wheat grain using six levels of grain moisture content (14%, 16%, 18%, 20%, 22% and 24%). The following were determined for each level of moisture content: angle of repose, static angle of repose (SAR), bulk density and thousand kernel weight. The friction coefficients for four different construction materials (CEF) were also determined: acid-resistant steel, wear-resistant steel, plastic (PPLD) and rubber. It was found that an increasing moisture content in grains was accompanied by an increase in the thousand kernel weight, angle of repose, SAR, as well as the CEF against each of the surfaces used in the study. The highest value of the CEF was recorded for a rubber surface (0.782) and the smallest was for a polypropylene surface (0.443). The highest values of the angle of repose and the SAR were recorded for the grain with the highest moisture content: 37.15o and 39.44o, respectively. An increase in the moisture content in kernels reduced their bulk density from 79.870 kg · hl–1 (moisture content: 14%) to 68.783 kg · hl–1 (moisture content 24%).

Słowa kluczowe

EN

wheat grain; angle of repose; tilting box method; moisture content; coefficient of external friction

• Wydawca: Wydawnictwo Uniwersytetu Warmińsko-Mazurskiego w Olsztynie
• Czasopismo: Technical Sciences / University of Warmia and Mazury in Olsztyn
• Rocznik: 2016
• Tom: nr 19(1)
• Strony: 17--26
• Opis fizyczny: Bibliogr. 20 poz., tab., wykr.

Twórcy

autor

Markowska A.

• Chair of Foundations of Safety, University of Warmia and Mazury in Olsztyn

autor

Warechowska M.

• Chair of Foundations of Safety, University of Warmia and Mazury in Olsztyn

autor

Warechowski J.

• Chair of Process Engineering and Equipment, University of Warmia and Mazury in Olsztyn

Bibliografia

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.