ENERGY EFFICIENCY OF LIGHTING INSTALLATIONS OF FLOOR-MANAGED POULTRY HOUSES
One of the main and urgent issues in poultry farming is energy supply. At the same time, the productivity of the poultry, in comparison with other animals, depends most on the parameters of the light environment in the premises. The main directions of reducing the energy consumption for lighting of poultry houses with floor housing of broilers associated with the imperfection of the requirements of regulatory documents to the structure of the light field. The authors made calculations showed to what extent the energy efficiency of the lighting installation depends on the choice of the control point location, i.e. the share of the luminous flux of all lamps that goes to create a normalized minimum illumination in the poultry house. Attempts to find a compromise solution led to the conclusion that the lamps produced by the industry do not allow to obtain the optimal combination of illumination, uniformity, brilliance and economy. In the article states that the solution of this problem is possible by using lamps with a special shape of the light intensity curve. The shape of the light intensity curve should be "consistent" with the width of the poultry house, the height of the suspension above the floor level and the number of expected luminous lines. The width of the poultry house is always determined by the installed technological equipment, and the number of luminous lines cannot be a fractional number. The most promising, from the point of view of the authors, is the use of lamps with a light intensity curve of the «I» type (the industry has not yet produced, but research is being conducted in this direction). The technical implementation of the solution of the problem is the use of LED lamps, but not because of the high light output, but the ability easily form a light intensity curve of the required shape. The article presents a variant of a lighting system that allow create a light environment in the poultry house that approaches the required one. At the same time, acceptable energy efficiency will be ensured, even without taking into account the increase in poultry productivity.