A numerical model of the microclimate and air quality in the premises of an Orthodox church is built in STAR CCM+ software. The building of the Church of the Nativity with a capacity of 900 people in St. Petersburg was adopted for modeling. The model takes into account features of architecture, heating equipment, the number of people and candles. There is a warm floor in the prayer hall to compensate for the loss of heat. The supply of fresh air in the serviced area is provided by inclined falling jets, and the removal of air is provided through the transom. The distribution of velocity and temperature fields and concentrations of CO2 in the main premises of the church (vestibule, prayer hall, altar) was obtained under non-stationary operation and full capacity of the church. The conclusion was made about the provision of normalized microclimate parameters in the premises of the church with the adopted design solutions for heating and ventilation systems.

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The article presents the results of the analysis of using gas turbine power plants (GTPP) based on micro turbine generators for the electrical and thermal energy generation during an oil field development. The main characteristics of the GTPP are given. New materials and technologies for thermal insulation of pipelines of the heat supply system are proposed.The expediency of using the cogeneration principle based on the use of gas turbine power plants in the energy systems of oil fields has been substantiated. The work was carried out with the support of the world-class scientific and educational center «Russian Arctic: new materials, technologies and research methods».

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