Ключевые слова: above, central, conducting, conductive, conveying, district, equipment, gas, ground, heat, heatingmain, hot, housing, hydropower, industrial, industry, infrastructure, insulated, insulation, main, metal, municipal, old, pipe, pipeline, piping, russia, serve, service, sky, snow, steam, stream, structure, supply, support, system, technology, thermal, town, transfer, transit, transmission, transportation, transporting, trees, tubing, urban, water, winter,