performance asam gelugur model kinetika pengering surya - Cationic Rosin Cocoa drying Drying technology Mechanical Enginering Neutral sizing PAC Pinus radiata Renewable energy TKS collector continuous drying diffusivity coefficient dryers drying enzyme evacuated tube fermented cocoa beans heat pump intermittent intermittent sun -drying kolektor tabung vakum konveksi alami konveksi paksa konveksi paksa dan alami modified starch padi; pengering surya;kolektor silinder parabola; paper additive paper machine paper properties papermaking quality of cocoa beans sack kraft solar energy solar thermal specific energy consumption steam saving waktu pengeringan; model kinetika