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In conditions of modern gas supply, the gas parameters are not constant. In this regard, gas appliances operate at different pressures. In operation, the change in the thermal load of the devices is due to fluctuations in the gas pressure in the city network. These oscillations are associated with the gas oscillations at the outlet from the gas regulating station. The main indicator of qualitative combustion of gas in appliances is the completeness of combustion, and this depends on maintaining the nominal pressure. The time during which the combustion process is completed consists of the time necessary for the formation of a gas-air mixture of stoichiometric composition, for heat the mixture to the ignition temperature, and of the time during which the combustible components of the gas react with oxygen.

The main source of energy in the economy is gas fuel. The specific weight of natural gas in the fuel and energy balance is about 50%. †The main requirement for the gas distribution system is to ensure the reliability, safety of this system. One of the ways to improve the reliability of gas supply systems is to use the reliability of automatic equipment to determine the gas contamination of premises. Based on the analysis of calculation formulas, an algorithm for the hydraulic calculation of gas pipelines is compiled. Based on the characteristics of gas distribution systems, it is advisable to apply such a solution, when gas supply of domestic consumers, boiler houses of municipal agricultural enterprises is carried out from the distribution network of high and medium pressure through autonomous combined pressure regulators installed in areas of high-rise buildings.

The analysis of two gas distribution systems related to the development of promising areas in the gas industry is carried out. To reduce costs in the gas distribution system, it is proposed to use high and medium gas pressure, except for residential buildings. In front of each agricultural object, it is necessary to provide for the location of the cabinet installation. In the hydraulic calculation of a dead-end gas network of high and medium pressure, the method of rational distribution of pressure drops between sections of the gas network was used. This made it possible to determine the optimal size of diameters, which is associated with a reduction in the cost of building gas pipelines in agriculture.