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Technologies and technical equipment for agriculture and food industry

Volume

Volume 74 / No. 3 / 2024

Pages : 335-344

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OPTIMIZATION OF MELKASSA AGRICULTURAL RESEARCH CENTER (MARC) BEAN THRESHER PARAMETERS USING RESPONSE SURFACE METHOD (RSM)

የምላሽ ወለል ዘዴን በመጠቀም የመልካሳ ግብርና ምርምር ማዕከል (MARC) የቦሎቄ ትሬሸር መለኪያዎችን ማመቻቸት (RSM)

DOI : https://doi.org/10.35633/inmateh-74-29

Authors

(*) Biniam ZEWDIE

Adama Science & Technology University

Adesoji OLANIYAN

Faculty of Engineering, Federal University Oye-Ekiti

Amana WAKO

Adama Science & Technology University

Dereje ALEMU

Agricultural Engineering Research, Melkassa Agricultural Research Center

Tamrat LEMA

Agricultural Engineering Research, Melkassa Agricultural Research Center

(*) Corresponding authors:

[email protected] |

Biniam ZEWDIE

Abstract

In this study, the Agricultural Research Center of Melkassa examined the performance of a laboratory loop type bean thresher. As a function of different drum speeds (450, 550, and 650 rpm), concave apertures (25, 35, and 45 mm), feed rates (550, 650, and 750 kg/h), and moisture levels (5, 10, and 15%), the extent of grain deterioration, threshing efficiency, and rate of implantation were examined. Utilizing response surface techniques, the experimental design for optimization was developed. The response variables were significantly impacted by each independent variable. With a cylinder speed increase of 7.5 to 10.83 ms-1, the percentages of grain damaged, threshed, and germination decreased from 45.98 to 47.97%, 96.81 to 99.69%, and 85.75 to 55.98%, respectively. Despite an increase in seed germination, damaged grain and threshing efficiency decreased as the moisture content increased. Grain deterioration and threshing efficiency decreased, however seed sprouting improved in tandem with an increase in feed rate and convex aperture. The cylinder speed of 8.25 ms-1, the concave clearance of 37.4 mm, the feed rate of 672 kg/h, and the moisture content of 11.6% (db) were found to be the ideal parameters. In this case, the ideal ranges for seed sprouting, threshing efficiency, and grain impairment were found to be 3, 98.3, and 84.29%, respectively.

Abstract in Amharic

በዚህ ጥናት የመልካሳ ግብርና ምርምር ማዕከል የላብራቶሪ ሉፕ አይነት የቦሎቄ መፈልፈያ አፈጻጸምን መርምሯል። እንደየተለያዩ የሲሊንደር ፍጥነት (450, 550 እና 650 rpm), ሾጣጣ ቀዳዳዎች (25, 35 እና 45 ሚሜ)፣ የምግብ መጠን (550, 650 እና 750 ኪ.ግ. በሰዓት) እና የእርጥበት ደረጃዎች (5, 10, እና 15%) ፣ የእህል መበላሸት መጠን, የመውቂያ ቅልጥፍና እና የመትከል መጠን ተፈትሸዋል. የምላሽ ወለል ቴክኒኮችን በመጠቀም፣ ለማመቻቸት የሙከራ ንድፍ ተዘጋጅቷል። የምላሽ ተለዋዋጮች በእያንዳንዱ ገለልተኛ ተለዋዋጭ ጉልህ ተጽዕኖ አሳድረዋል. የሲሊንደር ፍጥነት ከ 7.5 ወደ 10.83 ms-1 በመጨመር የተጎዳ፣ የተወቃ እና የበቀለው እህል በመቶኛ ከ45.98 ወደ 47.97%፣ ከ96.81 ወደ 99.69% እና ከ85.75 ወደ 55.98% ቀንሷል። የዘር ማብቀል ቢጨምርም የእርጥበት መጠኑ እየጨመረ ሲሄድ የተበላሸ እህል እና የመውቂያው ውጤታማነት ቀንሷል። የእህል መበላሸት እና የመውቂያ ቅልጥፍና ቀንሷል፣ ነገር ግን የዘር ማብቀል ከአመጋገብ ፍጥነት እና ከኮንቬክስ ክፍት ቦታ ጋር ተያይዞ ተሻሽሏል። የሲሊንደሩ ፍጥነት 8.25 ms-1፣ የሾለ 37.4 ሚሜ ማጽጃ፣ የምግብ ፍጥነቱ 672 ኪ.ግ በሰአት እና 11.6% (db) የእርጥበት መጠን በጣም ጥሩ መለኪያዎች ሆነው ተገኝተዋል። በዚህ ሁኔታ ለዘር ማብቀል፣ የመውቂያ ቅልጥፍና እና የእህል እክል ተስማሚ ክልሎች 3፣ 98.3 እና 84.29% በቅደም ተከተል ተገኝተዋል።

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