Modern approach to the heating of greenhouses | Современный подход к отоплению теплиц
2012
Lovkis, V.B. | Demenok, N.A. | Lovkis, O.V., Belarus State Agrarian Technical Univ., Minsk (Belarus) | Martinov, O.G., National Academy of Sciences. The A.V. Luikov Heat and Mass Transfer Institute, Minsk (Belarus)
In industrial greenhouse complexes oriented щт all-season year-round cultivation of agricultural products, there is a need for the following different sources of energy: thermal energy for heating - 2 - 4 MW / ha, the electric energy for the supplementary lighting systems - 1 - 3 MW / ha, production of CO2 (equivalent to the gas combustion) - 0,5 - 1 MW / ha. In the continuous rise of prices on fuel and energy resources, the task of reducing specific energy consumption for space heating greenhouse appears an important one. Comparative analysis of different methods of heating of greenhouses (water, air, electric, gas) is presented in the article. The main advantages and disadvantages of each are analyzed. Utilization of infrared emissive units is proposed, the main advantages of this type of heating devices are listed. The calculation of the efficiency of the system of local infrared heating in comparison with conventional hot-water heating system is made and displayed in details.
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