Keyword: «heating»
The article presents an energy-efficient design of a small-sized polycarbonate greenhouse, which can be used in winter in small farms. The results of mathematical modeling of the heat balance in a classic tunnel polycarbonate greenhouse and in the proposed greenhouse, as well as the results of an experimental study of the heat balance in a real greenhouse in winter are presented.
The classification of measures to improve greenhouse heating systems is presented. The analysis of the use of solar collectors is given. The schemes of using geothermal energy of the soil with the help of heat pumps are considered. The numerical values of reducing the costs of natural energy resources when introducing heating systems based on renewable energy sources are given. The use of geothermal and solar energy is appropriate for the climatic conditions of the southern regions of the country.
The article presents refined calculation methods for the radiant and radiant-convective heating systems of greenhouses. Graphical changes of additionally introduced coefficients from the thermal resistance of the fence, air temperature, irrigation coefficient and soil absorption capacity are presented. The heat balance equation is presented, taking into account the thermal and mass transfer processes occurring on the soil surface. These methods allow us to identify technical measures on the basis of which it is possible to in-crease the energy efficiency of the greenhouse building.
Authors:
Maksim Matveikin, Anna Tokareva
Maksim Matveikin, Anna Tokareva
The article provides an analysis of measures to improve the energy efficiency of the building of the workshop for the repair of agricultural machinery. Of the nine events presented, five were rejected due to the high cost of equipment and metal consumption. The remaining four areas require further consideration. These measures include the use of energy-saving heating systems, regulation of the release of thermal energy in an individual heating point, the use of a decentralized heat supply system and the improvement of thermal protection of the building.