The article discusses the main thermal processes in the automated control systems for heat consumption (ACSHC) of buildings, schematic diagrams of these systems, mathematical models used for description of thermal processes in ACSHC. Conducted verification represented by mathematical models. It was found that the efficiency of the operation of ACSHC depend from the external and internal factors. Numerical study of dynamic modes of operation of ACSHC.
The paper introduces a new technology of isothermal pressure regulation of natural gas based on temperature stratification which combines the vortex effect temperature stratification and supersonic gas-dynamic temperature stratification. The authors simulate physical and numerical controllers work. As a result of the experiments the most effective operating principles of the isothermal controller (based on the vortex tube temperature stratification) are introduced. The paper also presents calculations of the described pressure regulation controller while applying gas-dynamic temperature stratification. The authors conclude that the usage of the introduced technology of isothermal pressure regulation of natural gas will reduce expenses of gas transportation systems for their own needs (by 0,08-0,2 % of natural gas to their carrying capacity).
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