International Journal of Agricultural Engineering

Open Access Open Access  Restricted Access Subscription Access
Open Access Open Access Open Access  Restricted Access Restricted Access Subscription Access

Effect of Process Parameters on In-Bin Drying Characteristics of High Moisture Paddy


Affiliations
1 Department of Food and Agricultural Process Engineering, AEC&RI, Tamil Nadu Agricultural University, Coimbatore (T.N.), India
2 Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore (T.N.), India
3 Department of Physical Sciences and Information Technology, Tamil Nadu Agricultural University, Coimbatore (T.N.), India
     

   Subscribe/Renew Journal


Appeal of in-bin drying is that the same bin can be used for drying and temporary storage of grains at farm level. Successful adoption of in-bin drying method needs careful research on conditions under which it operates. Effect of process conditions such as inlet air temperature, rate of air flow and bed depth on drying characteristics of high moisture paddy at 25% (wet basis) in cylindrical drying bin was studied. An experimental cylindrical drying bin was fabricated with false floor arrangement. Three factors three levels Box-Behnken experimental design was used for conducting the drying experiments. In total 17 experiments were performed at three levels of temperatures (50, 60 and 70 °C), air flow rates (0.2, 0.3 and 0.4 m3 s-1m-2) and bed depths (22.5, 33.75 and 45 cm). Five response variables were investigated in this study viz., drying uniformity in terms of moisture differential within drying bin, drying rate (kg kg-1 h-1), moisture ratio, head rice yield (%) and germination (%) of paddy. It was observed that moisture differential along the height of bed was highly affected by air flow rate and bed depth. Drying of high moisture paddy in bin dryer occurred in falling rate period and no constant rate period was observed. Drying temperature 70 °C resulted in reduced head rice yield (33.7%) and germination (74%) of paddy.

Keywords

High Moisture Paddy, In-Bin Drying, Process Conditions, Drying Characteristics.
Subscription Login to verify subscription
User
Notifications
Font Size


  • Box, G. and Behnken, D. (1960). Some new three level designs for the study of quantitative variables. Technometrics, 2 : 455–475.

  • Chen, C. (2003). Evaluation of air oven moisture content determination methods for rough rice. Biosystem Engg., 86(4), 447-457.

  • Gupta, M., Sehgal, V. and Arora, S. (2013). Optimization of drying process parameters for cauliflower drying. J. Food Sci. & Technol., 50(1) : 62-69.

  • Jia, C., Wang, L., Guo, W. and Liu, C. (2016). Effect of swing temperature and alternating air flow on drying uniformity in deep bed wheat drying. Appl. Thermal Engg., 106 : 774-783.

  • Kibar, H., Ozturk, T. and Esen, B. (2010). The effect of moisture content on physical and mechanical properties of rice. Spanish J. Agric. Res., 8(3) : 741-749.

  • Madamba, P. (2002). The response surface methodology: An application to optimize dehydration operations of selected agricultural crops. Lebensmittel Wissenschaft und-Technologie, 35 : 584–592.

  • Madamba, P. and Yabes, R. (2005). Determination of optimum intermittent drying conditions for rough rice. Lebensm.-Wiss. u.-Technol., 38 : 157-165.

  • Naghavi, Z., Moheb, A. and Ziaei-rad, S. (2010). Numerical simulation of rough rice drying in deep bed dryer using non-equilibrium model. Energy Conserv. & Manage., 51 : 258-264.

  • Ng, P., Law, C., Tasirin, S. and Daud, W. (2005). Drying characteristics of Malaysian paddy: Kinetics and grain cracking quality. Drying Technol., 23, 2477-2489.

  • Ondier, G., Siebenmorgen, T. and Mauromoustakos, A. (2010). Low temperature, low relative humidity drying of rough rice. J. Food Engg,, 100 : 545-550.

  • Ranjbaran, M., Emadi, B. and Zare, D. (2014). CFD simulation of deep bed paddy drying process and performance. Drying Technol., 32 : 919-934.

  • Regalado, M., Bekki, E. and Madamba, P. (2000). Dehumidification drying of high moisture rough rice in radial flow, circular bin. Drying Technol., 18 : 2307-2326.

  • Sarker, M., Ibrahim, M., Aziz, N. and Salleh, P. (2014). Energy and rice quality aspects during drying of freshly harvested paddy with industrial inclined bed dryer. Energy Conversion & Management, 77 : 389-395.

  • Sivagnanam, K. and Murugan, K. (2015). Growth of rice production in Tamil Nadu: Progress and Prospects. Agric. Situ. India, 72 : 8-15.

  • Srivastava, V. and John, J. (2002). Deep bed grain drying modeling. Energy Cons. & Manage., 43 : 1689-1708.

  • Tohidi, M., Sadeghi, M. and Torki-Harchegani, M. (2017). Energy and quality aspects for fixed deep bed drying of paddy. Renew. & Sustain. Energy Rev., 70 : 519-528.


Abstract Views: 215

PDF Views: 0




  • Effect of Process Parameters on In-Bin Drying Characteristics of High Moisture Paddy

Abstract Views: 215  |  PDF Views: 0

Authors

Anarase Dattatray Arjun
Department of Food and Agricultural Process Engineering, AEC&RI, Tamil Nadu Agricultural University, Coimbatore (T.N.), India
Shunmugam Ganapathy
Department of Food and Agricultural Process Engineering, AEC&RI, Tamil Nadu Agricultural University, Coimbatore (T.N.), India
T. Pandiarajan
Department of Food and Agricultural Process Engineering, AEC&RI, Tamil Nadu Agricultural University, Coimbatore (T.N.), India
K. Bhuvaneswari
Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore (T.N.), India
M. Duraisamy
Department of Physical Sciences and Information Technology, Tamil Nadu Agricultural University, Coimbatore (T.N.), India

Abstract


Appeal of in-bin drying is that the same bin can be used for drying and temporary storage of grains at farm level. Successful adoption of in-bin drying method needs careful research on conditions under which it operates. Effect of process conditions such as inlet air temperature, rate of air flow and bed depth on drying characteristics of high moisture paddy at 25% (wet basis) in cylindrical drying bin was studied. An experimental cylindrical drying bin was fabricated with false floor arrangement. Three factors three levels Box-Behnken experimental design was used for conducting the drying experiments. In total 17 experiments were performed at three levels of temperatures (50, 60 and 70 °C), air flow rates (0.2, 0.3 and 0.4 m3 s-1m-2) and bed depths (22.5, 33.75 and 45 cm). Five response variables were investigated in this study viz., drying uniformity in terms of moisture differential within drying bin, drying rate (kg kg-1 h-1), moisture ratio, head rice yield (%) and germination (%) of paddy. It was observed that moisture differential along the height of bed was highly affected by air flow rate and bed depth. Drying of high moisture paddy in bin dryer occurred in falling rate period and no constant rate period was observed. Drying temperature 70 °C resulted in reduced head rice yield (33.7%) and germination (74%) of paddy.

Keywords


High Moisture Paddy, In-Bin Drying, Process Conditions, Drying Characteristics.

References