Skip to main content

Drying of Vegetable Products in Mobile Solar Dryer with Movable Shelving


The article outlines the relevance of production of dried products using a mobile solar dryer plant with mobile shelving. For intensification of the drying process, the convection of the drying agent flow in the proposed design of drying chamber was studied via numerical solution of the Navier–Stokes equations. As a result, a graphical interpretation of isolines of moving stream of drying agent in a chamber was obtained. Varying dimensionless parameters of the drying agent enabled complete coverage of all zones of the dryer chamber. The motion of shelves due to gravitational forces allowed uniform drying of materials. Through multivariate experiments, the influence of the temperature-time regimes of the dryer chamber on the particle size was investigated. The optimal drying conditions for cut fruit are presented.

This is a preview of subscription content, access via your institution.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10
Fig. 11
Fig. 12
Fig. 13
Fig. 14
Fig. 15
Fig. 16
Fig. 17


  1. 1

    Khazimov, M.Zh., Khazimov, K.M., Urmashev, B.A., Tazhibayev, T.S., and Sagyndykova, Zh.B., Intensification of the Plant Products Drying Process by Improving Solar Dryer Design, J. Eng. Therm., 2018, vol. 27, no. 4, pp. 580–592; DOI:10.1134/S1810232818040203.

  2. 2

    Ultanova, I., Khazimov, K., and Khazimov, M., Determination of Thermal Performance the Fruits Pulp of Melons, Agroinzh. Energet., 2014, no. 19, pp. 121–128.

  3. 3

    Tiwari, G.N., Solar Energy: Fundamentals, Design, Modelling and Applications, 4th rep., Alpha Science International, 2008.

  4. 4

    Khazimov, Z.M., Ganesh, B.C., Khazimov, K.M., and Khazimov, M.Z., Modeling of the Motion of Free Convective Drying Agent in Plastic Helio Dryer, J. Eng. Therm., 2014, vol. 23, no. 4, pp. 306–315.

  5. 5

    Khazimov, K.M., Bora, G.C., Urmashev, B.A., Khazimov, M.Z., and Khazimov, Z.M., Computation of Optimal Structural and Technical Parameters of Solar Dryer, Int. J. Engin. Innovat. Technol. (IJEIT), 2014, vol. 4, no. 1, pp. 251–261.

  6. 6

    Khazimov, M.Z., Tazhibayev, T.S., Khazimov, K.M., Francesco, G.P., and Kurpenov, B.K., Heli Dryer Patent for Invention RK 30006, appl. 04/01/2014, publ. 15.08.2017, Bulletin, 2017, no. 6.

  7. 7

    Gershuny, G.Z. and Zhukhovisky, E.M., Konvektivnaya ustoichivost’ neszhimaemoi zhidkosti (Convective Stability of Incompressible Fluid), Moscow: Nauka, 1972.

  8. 8

    Kelkar, K.M. and Patankar, C., Numerical Calculation of the Flow and Heat Transfer in the Channel between Parallel Plates with Alternating Fins of Opposite Plates, Heat Transfer, 1981, no. 1, pp. 24–30.

  9. 9

    Patankar, S., Numerical Heat Transfer and Fluid Flow, New York: Hemisphere, 1980.

  10. 10

    Danayev, N.T. and Urmashev, B.A., Iterative Schemes for Solving the Auxiliary Grid Navier–Stokes Equations, Vestnik KAZNU, Mat., Mekh., Inform., 2000, no. 4, pp. 74–78.

  11. 11

    Danayev, N.T. and Smagulov, Sh.S., On the Realization of the Solution of Difference Equations \({\vec{V}}^{n+1/2} + \tau\,grad_h p^{n+1}= \vec{V}^{n+1/2},\,div_h \vec{V}^{n+1}=0\), in Some Numerical Methods for Solving the Navier–Stokes Equations for an Incompressible Fluid, Engineering Academy of RK, Preprint no. 11, 1995, pp. 4–11.

  12. 12

    Akhnazarova, S.L. and Kafarov, V.V., Metody optimizatsii eksperimenta v khimii i khimicheskoi tekhnologii(Optimization of Experiment in Chemistry and Chemical Technology), Moscow: Vyshaya shkola, 1978.

  13. 13

    Melnikov, S.V., Aleshkin, V.R., and Roshchin, P.M.,Planirovanie eksperimenta v issledovaniyakh sel’skokhozyaistvennykh protsessov (Experiment Planning in Agricultural Process Research), Leningrad: Kolos, 1980.

  14. 14

    Standard 34060-2017, Interstate Standard, Internal Engineering Networks of Buildings and Structures. Testing and Adjustment of Ventilation and Air Conditioning Systems. Rules for Carrying out and Monitoring the Performance of Work (put into effect by the Order of Rosstandart dated January 16, 2018, no. 4).

  15. 15

    Preobrazhensky, V.P., Teploteknicheskie izmereniya i pribory: uchebnik dlya vuzov (Thermal Measurements and Devices: A Textbook for Universities), Moscow: Energiya, 1978.

  16. 16

    Standard 10856-96, Moisture Determination Method, Moscow: Izd-vo standartov, 1996.

  17. 17

    Orlova, I.V., Ekonomiko-matematicheskie metody i modeli. Vypolnenie rachetov v srede EXCEL (Economic and Mathematical Methods and Models. Performing Calculations in the EXCEL Environment), Moscow: ZAO Finstatinform, 2000.

  18. 18

    Standard 34130-2017, Interstate Standard, Dried Fruits and Vegetables. Test Methods, Moscow: Standartinform, 2018.

  19. 19

    Standard 32065-2013, Interstate Standard, Dried Vegetables. General Technical Conditions, Moscow: Standartinform, 2019.

Download references

Author information



Corresponding author

Correspondence to M. Zh. Khazimov.

Rights and permissions

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

Urmashev, B.A., Khazimov, K.M., Temirbekov, A.N. et al. Drying of Vegetable Products in Mobile Solar Dryer with Movable Shelving. J. Engin. Thermophys. 30, 145–162 (2021).

Download citation