ISSUE 25



Kyiv National University of Construction and Architecture (KNUCA)

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VENTYLIATSIIA, OSVITLENNIA TA TEPLOHAZOPOSTACHANNIA

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N. Chepurna, Ph.D, associate professor. Kyiv National University of Construction and Architecture, Kyiv, Ukraine, ChepurnayaNV@ukr.net, ORCID: 0000-0001-8044-7563
M. Kirichenko, PhD, associate professor. Kyiv National University of Construction and Architecture, Kyiv, Ukraine, m-kirichenko@ ukr.net, ORCID: 0000-0002-3651-3153
V. Chepurnyi, Senior Lecturer. Kyiv National University of Construction and Architecture, Kyiv, Ukraine, ChepurnoyVV@ukr.net



Research оf Microclimate Parameters in Chambers for Growing Green Crops


Abstract. An important task of the agricultural sector is to increase production, expand the range and improve the quality of green crops in the winter and early spring periods. The solution to this problem is the active development of greenhouses. One of the main problems of greenhouses is the high cost of thermal energy to maintain the necessary parameters of the microclimate. Large energy consumption due to the maintenance of high temperature and humidity throughout the volume of greenhouses. The introduction of engineering technologies that will provide the optimal microclimate parameters necessary for the development of plants directly in the growth zones, and beyond their limits - minimally acceptable, would significantly reduce the energy consumption of the microclimate support compared to traditional systems. One of the solutions to this problem is the organization of isolated microzones with engineering systems to create the necessary microclimate in the form of shelving chambers, with a light-transparent, light-lifting vertical fencing. Microclimate parameters were studied in chambers for growing green crops. The studies were conducted in a specially designed chamber in the working conditions (field studies) of the greenhouse complex. The heating of the working area was carried out with the help of air heating, by means of the lower distribution of heated and humidified air. At the same time, studies were carried out on the temperature field, velocity field, and changes in air humidity in the zone of growing plants and in the total volume of cultivation facilities. The conducted research allowed us to fairly accurately represent the physical model of the propagation of air jets and check the analytical calculations regarding the internal model of the propagation of jets, verify the values ​​obtained and compare with the theoretical ones. For the results of research, an engineering system is proposed that will provide the necessary technological requirements for the parameters of the microclimate directly in these chambers. Calculations show the ability to significantly save on energy consumption by maintaining the necessary parameters only in the vegetation zone of green crops.


Key words: heating system, microclimate parameters, green crop growing chamber


Refernces (MLA)


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