Mechatronic greenhouse microclimate temperature control system

Authors

DOI:

https://doi.org/10.20535/2521-1943.2024.8.2(101).298506

Keywords:

mechatronic control system, microclimate, temperature, heat output, greenhouse

Abstract

Sudden changes in air temperature and humidity have a negative impact on crop cultivation. Modern methods of regulating the microclimate of greenhouse facilities are mostly reduced to regulating the flow and temperature of air masses. The purpose of this work is to analyze the thermal radiation of a greenhouse facility and to create a mechatronic control system for heating elements. The simulation was performed for one day in the Kherson region (May 23, 2023). The effect of water vapor on thermal radiation and the mixed convection mechanism inside the greenhouse were not taken into account in the study. To simplify the analysis, the greenhouse was modeled without plants, as such a full simulation model is beyond the scope of this study. This analysis leads to an accurate estimate of the total heat transfer coefficient and heat flux of the greenhouse, which served as the basis for the creation and testing (plausibility check) of a simplified control program for the greenhouse microclimate system. The results of the study and the developed program for controlling heaters are suitable for use in control algorithms for the mechatronic greenhouse system to take into account cyclic daily changes in parameters.

References

  1. Мироненко Г.П., Спаська Л.І. Тепловий розрахунок споруди захищеного грунту. Методичні рекомендації щодо виконання курсової роботи студентам денної і заочної форм навчання спеціальності „Енергетичний менеджмент”. - Х.: ХНТУСГ.
  2. Automation of microclimate in greenhouses Marina Ganzhur1,*, Alexey Ganzhur1, Andrey Kobylko1, and Denis Fathi1 1Don State Technical University, 344003, 1, Gagarin sq., Rostov on Don, Russia
  3. Kittas C. Determination of the overall heat transfer coefficient of a greenhouse cover. Agric Forest Meteorol 1994;69:205–21.
  4. Papadakis G, Frangoudakis A, Kyritsis S. Mixed, forced and free convection heat transfer at the greenhouse cover. J Agric Engng Res 1992;51:191–205.
  5. Duffie JA, Beckman WA. Solar engineering of thermal processes. John Wiley& Sons, Inc; 1991.
  6. Bot GPA. Greenhouse climate: from physical process to a dynamic model. PhD Thesis, Agriculture University of Wageningen, The
  7. Netherlands; 1983.
  8. On the determination of the overall heat transmission coefficient and soil heat flux for a fog cooled, naturally ventilated greenhouse: Analysis of radiation and convection heat transfer Ahmed M. Abdel-Ghany, Toyoki Kozai, Faculty of Horticulture, Chiba University, Matsudo Chiba 271-8510, Japan Received 30 April 2005.
  9. Lamrani MA, Boulard T, Roy JC, Jaffrin A. Air flows and temperature patterns induced in a confined greenhouse. J Agric Engng Res 2001;78(1):75–88.
  10. Xiusheng Y. Greenhouse microclimate: Transport process, plant responses and dynamic modeling. PhD Dissertation. The Ohio State
  11. University; 1988.
  12. Aldrich RA, Bartok JW. Greenhouse engineering. 3rd edition, NRAES-33; 1994.
  13. Kindelan M. Dynamic modeling of greenhouse environment. Trans ASAE 1980:1232–9.

Published

2024-06-11

How to Cite

[1]
Y. Synytsyna and O. Gubarev, “Mechatronic greenhouse microclimate temperature control system”, Mech. Adv. Technol., vol. 8, no. 2(101), Jun. 2024.