In the process of designing an automatic control system for a closed system of heating and ventilation of greenhouses with air regeneration, a structural and logical control scheme was substantiated and developed, which provides control of technological parameters (temperature, humidity, CO2 concentration, lighting. The structural-logical scheme was created on the basis of the technological map of the cultivation of common oyster mushrooms taking into account changes in temperature, humidity, CO2 concentration and illumination as a function of time. As a result of the study, controlled quantities, control actions, controlled disturbing actions and uncontrolled disturbing actions were determined. The parameters and modes of operation of the device for automatic control of the closed ventilation system are substantiated. The proposed control algorithm must have memory. During the entire technological cycle, the device must remember the values of temperature, humidity, CO2 concentration and lighting in each room and others. According to the type of memory used, the device will be synchronous, as the parameters of the automatic control device (APU) will change at the moment of arrival of synchronizing pulses. Due to the fact that some transient processes are not stable and have an oscillatory character, with the exception of illumination in our case, it is necessary to introduce a delay into the control algorithm for the response of the system to the duration of pulses. All devices and executive devices work on electricity. Conclusions: 1. It was established that from the point of view of automatic control of the temperature of the substrate and air, the system "cultivation room – greenhouse" with a water heating system is a two-volume object. 2. The structural and logical control scheme of the closed heating and ventilation system, which provides for the control of technological parameters (temperature, humidity, CO2 concentration, illumination) in the system, is substantiated and developed.

closed ventilation system, air regeneration, structural and logical scheme, mushroom cultivation

Full Text:

PDF

1. Achour, Yasmine; Ouammi, Ahmed & Zejli, Driss. (2021). Technological progresses in modern sustainable greenhouses cultivation as the path towards precision agriculture. Renewable and Sustainable Energy Reviews, 147(3). pp.111251. doi:https://doi.org/10.1016/j.rser.2021.111251 [in English].

2. Sethi, V. P., Sumathy, K., Lee, C. & Pal, D. S. (2013). Thermal modeling aspects of solar greenhouse microclimate control: A review on heating technologies. Solar Energy, 96, pp. 56–82 [in English].

3. Costantino, A., Comba, L., Sicardi, G., Bariani, M. & Fabrizio, E. (2021). Energy performance and climate control in mechanically ventilated greenhouses: A dynamic modelling-based assessment and investigation. Applied Energy, 288 [in English].

4. Gorobec, V. & Yatsenko, O. (2014). Development and heating systems mathematical model of heat and mass transfer in the greenhouse with alternative energy sources. Energy and automation, 1 [in English].

5. Dudnyk, A. O. (2014). Synthesis and research of mathematical models of energy consumption for heating greenhouses in winter. Scientific Bulletin of the National University of Bioresources and Nature Management of Ukraine. Series: Technology and energy of agricultural industry, 194 (3), pp. 218–222 [in English].

6. Shelestovskyi B.H., Habrusiev H.V. & Habrusieva I.Iu. (2023) Vyshcha matematyka: teoriia ymovirnostei ta matematychna statystyka [Higher mathematics: probability theory and mathematical statistics]. Navchalnyi posibnyk. Ternopil: SMP "Taip" [in Ukrainian].

7. Achour, Yasmine; Ouammi, Ahmed & Zejli, Driss. (2021). Technological progresses in modern sustainable greenhouses cultivation as the path towards precision agriculture. Renewable and Sustainable Energy Reviews, 147147(3). pp.111251 [in English].

8. Holub, H.A. & Kepko, O.I. (2016). Vybir struktury tsekhiv po vyrobnytstvu substrativ ta vyroshchuvanniu hrybiv [The choice of the structure of workshops for the production of substrates and the cultivation of mushrooms]. Nauk. visnyk Natsionalnoho universytetu bioresursiv i pryrodokorystuvannia Ukrainy. Seriia: tekhnika ta enerhetyka APK  Science Bulletin of the National University of Bioresources and Nature Management of Ukraine. Series: agribusiness technology and energy, № 251, 183–192 [in Ukrainian].

9. Golub, G. & Kepko, O. (2017). Modelling the work of closed system of heating and ventilation of greenhouses. INMATEH – Agricultural Engineering, Vol.52, 2, 85-90 [in English].

10. Golub G., Kepko O., Pushka O., Kovtuniuk Z. & Kotliar T. (2023). Modeling of substrate and air temperature dynamics in the mushroom greenhouse. INMATEH – Agricultural Engineering, Vol.69, 1, 315–324. doi:DOI: https://doi.org/10.3563 [in English].

1. Achour Yasmine, Ouammi Ahmed, Zejli Driss, Technological progresses in modern sustainable greenhouses cultivation as the path towards precision agriculture. Renewable and Sustainable Energy Reviews. 2021. Vol. 147(3). pp.111251

2. Sethi V.P., Sumathy K., Lee C., Pal D.S. Thermal modeling aspects of solar greenhouse microclimate control: A review on heating technologies. Solar Energy. 2013. Vol. 96. рр. 56–82.

3. Costantino A., Comba L., Sicardi G., Bariani M., Fabrizio E. Energy performance and climate control in mechanically ventilated greenhouses: A dynamic modelling-based assessment and investigation. Applied Energy. 2021. Vol. 288. Pp. 116583.

4. Gorobec V., Yatsenko O. Development and heating systems mathematical model of heat and mass transfer in the greenhouse with alternative energy sources. Energy and automation. 2014. Vol. 1.

5. Dudnyk A. O. Synthesis and research of mathematical models of energy consumption for heating greenhouses in winter. Scientific Bulletin of the National University of Bioresources and Nature Management of Ukraine. Series: Technology and energy of agricultural industry. 2014. Vol. 194 (3). Pp. 218–222.

6. Шелестовський Б.Г., Габрусєв Г.В., Габрусєва І.Ю. Вища математика: теорія ймовірностей та математична статистика: навч. посібник. Тернопіль : СМП "Тайп", 2023. 142 с.

7. Achour Yasmine, Ouammi Ahmed, Zejli Driss Technological progresses in modern sustainable greenhouses cultivation as the path towards precision agriculture. Renewable and Sustainable Energy Reviews. 2021. Vol. 147(3). pp.111251.

8. Голуб Г.А., Кепко О.І. Вибір структури цехів по виробництву субстратів та вирощуванню грибів. Наук. вісник Національного університету біоресурсів і природокористування України. Серія: техніка та енергетика АПК. № 251. 2016. C. 183–192.

9. Golub G., Kepko O. Modelling the work of closed system of heating and ventilation of greenhouses. INMATEH – Agricultural Engineering. 2017. Vol. 52, № 2. Pp. 85–90.

10. Golub G., Kepko O., Pushka O., Kovtuniuk Z., Kotliar T. Modeling of substrate and air temperature dynamics in the mushroom greenhouse. INMATEH – Agricultural Engineering. 2023. Vol. 69, № 1. Pp. 315–324.

Copyright (c) 2023 Oleg Kepko, Ivan Lisovyi, Yuriy Kovalchuk