Repetitive loading of unroasted bulk palm kernels using UCTM for analysing optimum percentage kernel oil recovery and energy demand

[摘要] Repetitive loading test of bulk palm kernels (unroasted) was conducted to determine the percentage kernel oil yield and energy demand using the universal compression testing machine (UCTM) of the maximum load of 200 kN and speed of 5 mm min-1. Pressing vessels of varying diameters (60, 80 and 100 mm) with a plunger were used together with the UCTM. The bulk palm kernels initial height of 60 mm was repeatedly compressed until permanent deformation was reached. The total amounts of mass of kernel oil leakage, deformation, percentage kernel oil and energy were measured/calculated. The main part of the study will be done using the mechanical screw press Farmer 20 - duo (Farmer 20, Farmet a.s., Ceska Skalice, Czech Republic) to determine the optimum processing conditions for achieving maximum kernel yield and specific energy requirement.

[发布机构] Department of Mechanical Engineering, Faculty of Engineering, Czech University of Life Sciences, Prague, Czech Republic^1;Department of Materials and Manufacturing Technology, Faculty of Engineering, Czech University of Life Sciences, Prague, Czech Republic^2;Department of Agricultural Engineering, Faculty of Agriculture, Universitas Sumatera, Utara, Indonesia^3

[效力级别] 生态环境科学

[关键词] Czech Republic;Energy demands;Oil recoveries;Optimum processing conditions;Permanent deformations;Repetitive loadings;Specific energy requirement;Universal compression