Rotating orifice feeding system for continuous and uniform discharge of makhana seeds (Euryale ferox). (June 2021)
- Record Type:
- Journal Article
- Title:
- Rotating orifice feeding system for continuous and uniform discharge of makhana seeds (Euryale ferox). (June 2021)
- Main Title:
- Rotating orifice feeding system for continuous and uniform discharge of makhana seeds (Euryale ferox)
- Authors:
- Sharma, Kalyani
Patel, Shadanan
Jha, Shyam Narayan
Devi, Mridula
Vishwakarma, Rajesh Kumar - Abstract:
- Abstract: Consistent and slow mass flow rates of granular materials through a small diameter orifice ( D ) at the center of the bottom of a hopper is difficult to obtain when D is less than 5 times of the characteristic seed size. Rotation of the bottom in the horizontal plane with the orifice placed at an off-center distance ( R ) from the center of the hopper can sustain controlled flow rates even at small D . A simple feeding system was developed in this study for discharging roasted makhana seeds of different sizes (7.48–12.40 mm diameter) at 10–30 kg h −1 consistent mass flow rates. The feeding system consists of a rotating orifice plate at an off-center distance, which is placed inside a pipe connected with the bottom of a trapezoidal hopper. The effects of rotational rate ( ω ), D, and R on the mass flow rates of makhana seeds and plastic beads of different sizes have been investigated. The materials did not discharge when the orifice was stationary. The mass flow rate increased with the increase in ω, D and R . Finite mass flow rates in the range of 2.25–29.81 kg h −1 were obtained for different seed sizes of roasted makhana seeds with varying D (15–20 mm), R (20–30 mm), and ω (0.52–7.86 rad s −1 ). The mass flow rates >30 kg h −1 were obtained at D ≥ 25 mm, however, finite mass flow rate ranges were not be obtained for all seed sizes at R ≥ 20 mm. The seed discharge was in the funnel flow regime for all D, R, ω, and seed sizes because of the geometry of the hopperAbstract: Consistent and slow mass flow rates of granular materials through a small diameter orifice ( D ) at the center of the bottom of a hopper is difficult to obtain when D is less than 5 times of the characteristic seed size. Rotation of the bottom in the horizontal plane with the orifice placed at an off-center distance ( R ) from the center of the hopper can sustain controlled flow rates even at small D . A simple feeding system was developed in this study for discharging roasted makhana seeds of different sizes (7.48–12.40 mm diameter) at 10–30 kg h −1 consistent mass flow rates. The feeding system consists of a rotating orifice plate at an off-center distance, which is placed inside a pipe connected with the bottom of a trapezoidal hopper. The effects of rotational rate ( ω ), D, and R on the mass flow rates of makhana seeds and plastic beads of different sizes have been investigated. The materials did not discharge when the orifice was stationary. The mass flow rate increased with the increase in ω, D and R . Finite mass flow rates in the range of 2.25–29.81 kg h −1 were obtained for different seed sizes of roasted makhana seeds with varying D (15–20 mm), R (20–30 mm), and ω (0.52–7.86 rad s −1 ). The mass flow rates >30 kg h −1 were obtained at D ≥ 25 mm, however, finite mass flow rate ranges were not be obtained for all seed sizes at R ≥ 20 mm. The seed discharge was in the funnel flow regime for all D, R, ω, and seed sizes because of the geometry of the hopper and feeding system. The existing Beverloo equation did not describe the mass flow rate adequately for the developed system. Therefore, Beverloo equation was modified using a function similar to the Froude number to describe the mass flow rate. The developed feeding system performed well in feeding makhana seeds and plastic beads of different sizes and maintained finite mass flow rates. Highlights: Developed rotating orifice feeding system for consistent flow of spherical seeds in the clogged regime of orifice flow. Effects of orifice rotation rate, orifice diameter, and off-centre distance of orifice on mass flow rates were studied. Beverloo model was modified to calculate the mass flow rate in the clogged regime of orifice flow. … (more)
- Is Part Of:
- Journal of food engineering. Volume 299(2021)
- Journal:
- Journal of food engineering
- Issue:
- Volume 299(2021)
- Issue Display:
- Volume 299, Issue 2021 (2021)
- Year:
- 2021
- Volume:
- 299
- Issue:
- 2021
- Issue Sort Value:
- 2021-0299-2021-0000
- Page Start:
- Page End:
- Publication Date:
- 2021-06
- Subjects:
- Granular flow -- Hopper -- Rotating orifice -- Beverloo model -- Modified Beverloo model -- Clogging -- Makhana
Food industry and trade -- Periodicals
Food -- Analysis -- Periodicals
Aliments -- Industrie et commerce -- Périodiques
Aliments -- Analyse -- Périodiques
Aliments -- Recherche -- Périodiques
664.005 - Journal URLs:
- http://www.sciencedirect.com/science/journal/02608774 ↗
http://www.elsevier.com/journals ↗ - DOI:
- 10.1016/j.jfoodeng.2021.110504 ↗
- Languages:
- English
- ISSNs:
- 0260-8774
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 4984.543000
British Library DSC - BLDSS-3PM
British Library HMNTS - ELD Digital store - Ingest File:
- 20081.xml