7 research outputs found
Mathematical Modeling of the Temperature Regime of the "Livestock-Heliogreenhouse Complex" with Water Tank and Underground Heat Accumulator
Get PDFThe article develops a mathematical model of the heat supply system of the greenhouse complex, taking into account the free heat flow in the animals, solar energy, heat energy stored in heat accumulators and developed through the program MATLAB / Simulink. In the development of a mathematical model of the heat supply system of the greenhouse complex, a block diagram of the equation in the program MATLAB / Simulink was developed, without taking into account the change in air density and specific heat capacity with temperature. According to the graphic results obtained for the daily value of solar radiation 500 W/m2, outside air temperature, -6 0小 in Karshi, the air temperature inside the greenhouse rises to 22 0小, water tank battery temperature to 13 0小, underground heat accumulator temperature to 17 0小. can be seen. while the amount of total solar radiation was 300 W/m2, this figure was found to be 14 0小, 9 0小, and 12 0小
Mathematical Modeling of the Temperature Regime of the "Livestock-Heliogreenhouse Complex" with Water Tank and Underground Heat Accumulator
Get PDFThe article develops a mathematical model of the heat supply system of the greenhouse complex, taking into account the free heat flow in the animals, solar energy, heat energy stored in heat accumulators and developed through the program MATLAB / Simulink. In the development of a mathematical model of the heat supply system of the greenhouse complex, a block diagram of the equation in the program MATLAB / Simulink was developed, without taking into account the change in air density and specific heat capacity with temperature. According to the graphic results obtained for the daily value of solar radiation 500 W/m2, outside air temperature, -6 0小 in Karshi, the air temperature inside the greenhouse rises to 22 0小, water tank battery temperature to 13 0小, underground heat accumulator temperature to 17 0小. can be seen. while the amount of total solar radiation was 300 W/m2, this figure was found to be 14 0小, 9 0小, and 12 0小
Evaluation of heat losses of the solar greenhouse during the heating season
Get PDFThe article presents the results of calculation of heat losses in greenhouses with different coatings, taking into account thermal-physical properties of coatings. In addition, based on the results of changes in external air temperature and solar radiation over time, numerical calculations were made on the heat load of a greenhouse with a useful area of 108 m2 and the thermal power provided by solar energy
Evaluation of heat losses of the solar greenhouse during the heating season
No full textThe article presents the results of calculation of heat losses in greenhouses with different coatings, taking into account thermal-physical properties of coatings. In addition, based on the results of changes in external air temperature and solar radiation over time, numerical calculations were made on the heat load of a greenhouse with a useful area of 108 m2 and the thermal power provided by solar energy
