TY - JOUR
T1 - Activation Energy Analysis of Coffee Beans Drying Using Double Condenser Refrigeration System
AU - Dzaky, M. I.
AU - Kosasih, E. A.
AU - Fauzi, M. B.
AU - Prabowo, A. T.
AU - Zikri, A.
N1 - Funding Information:
The authors would like to thank Universitas Indonesia and Ministry of Education, Culture, Research, and Technology for the financial support through Pendidikan Magister menuju Doktor untuk Sarjana Unggul 2022 under contract NKB-863/UN2.RST/HKP.05.00/2022.
Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2022
Y1 - 2022
N2 - The coffee drying system that is less efficient with the use of sunlight makes the productivity of coffee farmers in Indonesia less than optimal when the rainy season arrives. In this study, the coffee bean drying process was carried out to make the drying system more effective and efficient by combining a bed dryer-type drying system with a heat pump. The drying air flow used was 550 lpm. Variations in temperature on the evaporator used 10 until 20 °C and without refrigeration. While the electric heating temperatures used are 60 to 80 °C. In addition, this test is also carried out using only electric heaters. The results obtained from this study are the dehumidification process of drying air in the evaporator can improve the drying process of coffee beans. Higher electric heating temperatures will also speed up the drying process. The highest value of activation energy for drying coffee beans on air humidity was 39.6485 kJ/mol at drying conditions without using a refrigeration system and n The lowest activation energy value was obtained at a specific humidity of 0.0079 kg/kg d.a (evaporator temperature 10°C) with a value of 19.9407 kJ/mol. The lower the specific humidity of the drying air, the lower the energy required to evaporate the water in the coffee beans. This activation energy value can then be used as initial data for the numerical simulation of drying coffee beans.
AB - The coffee drying system that is less efficient with the use of sunlight makes the productivity of coffee farmers in Indonesia less than optimal when the rainy season arrives. In this study, the coffee bean drying process was carried out to make the drying system more effective and efficient by combining a bed dryer-type drying system with a heat pump. The drying air flow used was 550 lpm. Variations in temperature on the evaporator used 10 until 20 °C and without refrigeration. While the electric heating temperatures used are 60 to 80 °C. In addition, this test is also carried out using only electric heaters. The results obtained from this study are the dehumidification process of drying air in the evaporator can improve the drying process of coffee beans. Higher electric heating temperatures will also speed up the drying process. The highest value of activation energy for drying coffee beans on air humidity was 39.6485 kJ/mol at drying conditions without using a refrigeration system and n The lowest activation energy value was obtained at a specific humidity of 0.0079 kg/kg d.a (evaporator temperature 10°C) with a value of 19.9407 kJ/mol. The lower the specific humidity of the drying air, the lower the energy required to evaporate the water in the coffee beans. This activation energy value can then be used as initial data for the numerical simulation of drying coffee beans.
UR - http://www.scopus.com/inward/record.url?scp=85143147952&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/2377/1/012058
DO - 10.1088/1742-6596/2377/1/012058
M3 - Conference article
AN - SCOPUS:85143147952
SN - 1742-6588
VL - 2377
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012058
T2 - 11th National Physics Seminar, SNF 2022
Y2 - 24 June 2022 through 25 June 2022
ER -