Magnetic treatment of liquid for potato loss reduction at storage
2021
Lysakov, A., Stavropol State Agrarian Univ. (Russian Federation) | Nikitenko, G., Stavropol State Agrarian Univ. (Russian Federation) | Kryukov, A., Stavropol State Agrarian Univ. (Russian Federation) | Tarasov, Ya., Stavropol State Agrarian Univ. (Russian Federation)
For seed and table potatoes storage a proper relative humidity level of at least 95% should be maintained. The decreased relative humidity of less than 95% causes the increase in potato tubers’ weight loss up to 40…50%. Specific devices called humidifiers are used to humidify the air in potato-storage houses. There are two dominant types of humidifiers that throw water in form of vapour or small-drop suspension (aerosol). The humidifiers of the second type do their primary task and also reduce the temperature, which is a great advantage. Humidifiers operate with a large liquid flow rate. Techniques used to reduce the liquid flow rate and increase the relative humidity level in a potato-storage house include magnetic water treatment. Pilot studies have found that the consumption of liquid depends on the parameter called a treatment dose. The parameter is a product of magnetic induction by treatment time (mT⋅s). Pilot studies have found that for the treatment dose within 10…12 mT⋅s, a liquid flow consumption for air humidification decreases by 60…70%, potato losses are less than 5% after 150 days of storage. Additionally, the research was conducted with the storage temperature from 4…6 ºС to 12…14 ºС. In this case, for the treatment dose within 10…12 mT⋅s, liquid flow consumption for air humidification decreases by 50…60%, potato losses are less than 8% after 150 days of storage. As a result of experiments, the design of a new device for magnetic processing of liquids has been developed. It is anticipated that magnetic treatment of liquids influences the potato cells, as the result of the effects, potato tubers either lock in moisture, starch and other substances, or lose them quickly due to inner-structure destruction.
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