Ексергетичний аналіз систем опромінення рослин в закритих екосистемах
Abstract
Exergic analysis of irradiation plants in enclosed ecosystems
В. Kovalyshyn
An important role in plant development and in getting the crop in agricultural ecosystems play an enclosed lighting and exposure. The functioning of the photosynthetic system of plants under artificial climate significantly depends on the intensity and spectral composition of radiation exposure [3]. Keeping these parameters gives a projected crop size and quality, can adjust the precocity of cultivated plants. Exposure systems also make a significant contribution to the energy balance of private agro-ecosystems. For modeling of radiation exergic analysis is almost never used. Therefore, the aim of our research is justification exergic analysis for simulation of radiation in plant closed agroecosystems.
Providing plants in artificial climate plants additional radiation from electrical sources requires a mathematical model of energy distribution.
From the source of radiation in the cultivation room comes falling energy, which is calculated by the electric power source and radiating impact source. The energy exposure also spent on heating the air in the growing room. With the passage of photons of optical energy through a layer of air is their absorption due to collisions with air molecules. The energy expended radiation and heat soil. Since soil can be approximately regarded as absolutely black body, the rate of absorption tends to 1. Therefore, the transmission and reflection coefficients of ground zero and sent to the components of the energy reflectance and transmittance can be ignored. The total energy equation exergic analysis exposed at the ground determined only by absorbing component.
Generalizing equation exergic analysis of the distribution of light energy in the indoor cultivation of plants.
Exergic described on the basis of the analysis model of distribution of light energy in the room with plants cultivation ensures the completeness of the information received and can be used to optimize parameters and modes of light exposure.
References
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Brodyansky`j V., Fratsher V., Myhalek K. (1988). Eksergetycheskyj metod i y`ego prylozheny`ya.[Exergical method and its applications]. Moscow,: Energoatomyzdat, 286.
Leman V. M. (1976). Kurs svetokul`tury rasteny`j. [Plant lighting culture cours]. Moscow: Vysshaya shkola, 272.
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