Naslov
Barley grain pre-drying by using low energy laser beam

Autori
Galić, Ante ; Pliestić, Stjepan ; Voća, Sandra ; Dobričević, Nadica ; Šic Žlabur, Jana

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
INOPTEP 2019 Book of abstracts / Babić, Mirko ; Radojčin, Milivoj ; Pavkov, Ivan - Novi Sad : National Society of Processing and Energy in Agriculture, 2019, 56-57

ISBN
978-86-7520-458-9

Skup
6th International Conference Sustainable postharvest and food technologies (INOPTEP 2019) ; 31st National Conference Prosessing and Energy in Agriculture (PTEP 2019)

Mjesto i datum
Kladovo, Srbija, 07.04.2019. - 12.04.2019

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
energy efficiency, pre-treatment, drying, laser power, barley grain

Sažetak
A laboratory laser beam drying method for barley grains is presented and the corresponding energy transfer is analyzed.Laser beam was directed to the thin grain layer. Grains were illuminated from one side during a period of 60 seconds with 100 mW 650 nm and 200 mW 650 nm collimated laser beam. The amounts of energy delivered within the illuminated area were 12.74 Wsm-2 for a 100 mW laser and 25.48 Wsm-2 for 200 mW laser. Barley grain samples with 18, 20, and 25 % moisture contents were used for the analysis. Obtained results showed differences in energy consumption among grains with different initial moisture content. Differences among energy consumption were also observed between grains treated with 100 mW laser, compared to grains treated with 200 mW laser.The energy savings of 51 %, in laboratory conditions, compared to conventional hot air drying, are determined by using 100 mW laser on the grain samples with 25 % of moisture.Also, a result shows that energy savings depend on grain wet basis and decrease with decrease of moisture content. Other advantages of described treatment are easily installed laser in/on the internal transport conveyors, laser treatment device is not harmful to the environment, does not leave burning fuel residue and also reduces the need for energy for hot air transport. The amount of energy emitted by the applied semiconductor lasers is relatively low and their thermal effect is negligible, therefore effect on grains is based only on bio stimulation. For these purpose it is necessary to investigate the balance between laser power, treatment period and biological effect of treatment.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

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