Electronic Theses and Dissertation

Model kinetika pengeringan penting untuk mengoptimalkan proses pengeringan dan meningkatkan kualitas produk. Tujuan penelitian ini adalah untuk menentukan model kinetika pengeringan pliek-u menggunakan alat pengering terowongan Hohenheim Aceh. Penelitian ini dilakukan secara eksperimental dengan mengeringkan kelapa hasil fermentasi sebanyak 3 kg. Bahan diratakan dalam loyang dengan ketebalan 1, 2, dan 3 cm. Pengeringan dilakukan selama 2 hari secara intermitten hanya di siang hari. Selanjutnya dilakukan analisis kadar air, laju pengeringan dan moisture ratio (MR). Analisis dilakukan menggunakan metode curve fitting dengan regresi non-linear menggunakan Microsoft Excel Solver. Model terbaik dievaluasi dengan parameter statistik meliputi coefficient of determation (R2), chi-square (χ2) dan Root Mean Square Error (RMSE). Hasil penelitian menunjukkan bahwa model terbaik pengeringan pliek-u pada ketebalan 1, 2, dan 3 cm adalah model Midilli et al. Perlu penelitian lanjutan untuk mengidentifikasikan model terbaik pada pengeringan pliek-u dengan ketebalan 2 dan 3 cm serta perlu validasi model menggunakan data eksternal.

Drying kinetics models are important for optimizing the drying process and improving product quality. The aim of this research is to determine the best kinetics model of drying that can explain the drying behavior of pliek-u using the solar tunnel dryer type Hohenheim Aceh. This research was carried out experimentally by drying 3 kg of fermented coconut. The products were distributed in drying boxes to a thickness of 1, 2 and 3 cm. Drying was carried out for 2 days intermittently only during the day. Furthermore, the parameters observed were water content, drying rate and moisture ratio (MR). The analysis was conducted using curve fitting method with non-linear regression using Microsoft Excel Solver. The best models were evaluated with statistical parameters including coefficient of determination (R²) and the lowest chi-square (χ²) and Root Mean Square Error (RMSE) values. The research results show that the best model for drying pliek-u at a thickness of 1, 2, and 3 cm are Midilli et al. model. Further research is needed to identify the best fit model for drying pliek-u with a thickness of 2 and 3 cm and to validate the model using external data.