Balance of heat flows in autonomous bio-vegetation complex as basis for its design

Abstract

Economic assessment, analysis and forecast of developing organic farming for the next ten years indicates the rapid growth of technologies for greenhouse vegetable growing in Russia. These positive trends are supported by factors such as worsening epidemiological situation in the world due to COVID-19 and transition to self-isolation of the majority of population, which requires providing healthy green products for a functional purpose. It is the need to strengthen the immune system that makes people consume vegetable products in accordance with the recommendations for rational consumption of vegetables that meet modern requirements for a healthy diet. To effectively solve the problem and in connection with the limitation of the imported products supply, the most rational solution is to modernize our domestic production of functional vegetable crops. The design of modern small-scale cultivation facilities makes it possible to ensure food security of various segments of the population living in any part of the Russian Federation. The structure autonomy and energy-saving technologies enable to operate the bio-vegetation complex all year round without being connected to an external power system. This is achieved due to the rational distribution of energy flows in the complex itself, and enables to efficiently operate it all the year round without serious additional financial costs for energy supply in the cold season. The paper presents energy-saving solutions and describes a thermophysical model of energy flows movement being an indispensable element in the design of such structures.

Design of an active subsurface system thermal energy supply to the bio-vegetation complex

“…Currently, the "warm floor" system is widespread in residential buildings, social institutions, livestock facilities, and is considered effectively functioning active heat system [7][8][9][10][11][12][13]. By analogy with the warm floor, the active subsurface system for thermal energy supply to the bio-vegetation complex is a combination of elements -heat-accumulating material and concrete screed with heat circuits in its thickness and water circulating as a coolant (Figure 1).…”

Unit for mineral fertilizer application before seeding the land

“…In the course of the research, the methods of system analysis, fundamental laws and provisions of theoretical mechanics, higher mathematics, and mathematical statistics were applied. The experiments used the methods of mathematical planning and strain gauging, as well as existing regulatory documents (Tst 63.03.2001, Tst 63.04.2001) and field experiments "NIIKHSA" and used the recommendations for the introduction of mineral fertilizers on the base of the chisel-cultivator unit to a depth of 20-25 cm, and determined the consumption of the mineral fertilizer [22].…”

Scientific basis for assessing reliability of water reservoir

“…There are cases of water leakage on the walls of the water tower, traces of alkali products of concrete are visible on the side walls, and the observation stairs of the barriers are corroded [13].…”