Calculation of heat and moisture regime in vegetable storages for optimum microclimate control

• Main Authors: Yakubov, Sabir, Isakov, Abdusaid, Pirova, Rashida
• Format: Conference Proceeding
• Language: English
• Subjects: Accumulation; Algorithms; Cross-sections; Mathematical analysis; Microclimate; Moisture content; Moisture effects; Permeability; Porous materials; Potatoes; Vegetables
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/5.0114011

An algorithm to calculate the moisture regime of air-permeable shield in conditions of alternating-sign air filtration was developed based on the analysis of methods for calculating the thermal and moisture conditions in vegetable storages. The analysis of the analytical dependence showed that the required cross-section of the experimental air duct is 0.42 m2 at a height of potato bulk accumulation of 4 m and a bulk layer temperature of 3°C (average during storage). The studies covered the main storage period, when the allowable temperature range for the potato accumulation varies from 2 to 4 °C. For other periods of storage, completely different temperature and moisture indices of the bulk layer of tubers with the same cross-section of the floor ventilation duct are characteristic. For stable operation of shields with controlled permeability, the control layer must meet the following requirements: be made of capillary-porous colloidal material; the coefficient of volumetric shrinkage of the material must be at least 2; the amount of material in the regulating layer - no more than 400 g/m3. During manufacturing, the moisture content of the material should be no more than 30%, while the initial impermeability of the layer should be ensured. The regulating layer should be located in the area of greatest moisture.