Research in Agricultural Engineering, 2019 (vol. 65), issue 1
LIST OF REVIEWERS - 2018List of reviewers
editors
Res. Agr. Eng., 2019, 65(1):I | DOI: 10.17221/11786-RAE 
Comparative kinetic analysis of convective and vacuum dried Opuntia ficus-indica (L.) Mill. cladodesOriginal Paper
Anirban Dey, Somya Singhal, Prasad Rasane, Sawinder Kaur, Navneet Kaur, Jyoti Singh
Res. Agr. Eng., 2019, 65(1):1-6 | DOI: 10.17221/18/2018-RAE
Opuntia ficus-indica (Linnaeus) Miller more usually known as fodder palm or nopal belongs to family Cactaceae. In the present study, the drying behavior of the O. ficus-indica cladodes was observed. The study concentrates on comparatively studying two types of commercial drying methods viz., forced convective drying (tray drying) and vacuum drying to dry nopal cladodes at three different temperatures viz. 40, 50 and 60°C. The equilibrium moisture contents for forced convective drying was achieved at 540-720 min and for that of vacuum drying at 600-840 min. Three mathematical drying models for thin...
Effect of moisture content on terminal velocity of lentil grainOriginal Paper
Zahra Basati, Ezzatollah Askari Asli- Ardeh, Vali Rasooli-Sharabiani
Res. Agr. Eng., 2019, 65(1):7-12 | DOI: 10.17221/92/2017-RAE
One of the aerodynamic characteristics of lentil is its terminal velocity. In order to determinate the terminal velocity, was designed a vertical wind tunnel. It was fabricated based on existing methods and standards. For decreasing the non-uniformity of airflow in the vertical wind column, was used a honey comb test area with 5 mesh screens. So, a wind tunnel nozzle was designed and fabricated using Morel method with the aim of increasing airflow rate and decreasing losses due to mesh screens. The height and section area of tunnel were 1.425 m and 0.1 × 0.1 m2, respectively. The pressure loss values were calculated at different parts of tunnel and...
Temperature and relative humidity effect on equilibrium moisture content of cassava pulpOriginal Paper
Ratinun Luampon, Suparerk Charmongkolpradit
Res. Agr. Eng., 2019, 65(1):13-19 | DOI: 10.17221/112/2017-RAE
The purpose of this research was to study the effect of temperature and relative humidity on the equilibrium moisture content of cassava pulp. In experiments, cassava pulp was tested with a static method that controlled the temperature at 30, 50 and 70°C and controlled relative humidity in a range 10-90% with standard saturated salt solutions as LiCl, MgCl2, NaBr, NaCl and KNO3. Five equations of equilibrium moisture isotherm were analysed to predict the equilibrium moisture content, which was a guideline to develop a new isotherm equation. The experimental results showed that the equilibrium moisture content was increased with increased relative humidity...
Determination the parameters and modes of new heliocollectors constructions work for drying grain and vegetable raw material by active ventilationOriginal Paper
Boris Kotov, Anatoly Spirin, Roman Kalinichenko, Valentyna Bandura, Yurii Polievoda, Ihor Tverdokhlib
Res. Agr. Eng., 2019, 65(1):20-24 | DOI: 10.17221/73/2017-RAE
The article presents the results of experimental studies of the air heating efficiency in heliocollectors with different surface forms developed in order to justify their use in equipment for active ventilation of grain and feed raw materials.
Assessment of the harvesting costs of different combine harvester fleetsOriginal Paper
Jüri Olt, Keio Küüt, Risto Ilves, Arne Küüt
Res. Agr. Eng., 2019, 65(1):25-32 | DOI: 10.17221/98/2017-RAE
This study discusses practical collection methods of cereal harvesting costs in different agricultural holdings in order to effectively manage combine harvester fleets, make economically reasoned decisions on the exploitation of combine harvesters, reduce harvesting costs and consequently the cost price of cereals. For this purpose, the author used work results of combine harvesters monitored by three randomly selected agricultural holdings, collected practical information on harvesting, analysed this information and provided assessments on the effectiveness of their combine harvester fleet. Evidently, not all combine harvester fleets and combines...