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[]
[null,null,"ТЕПЛОПОТЕРИ ИЗОЛИРОВАННОГО ТРУБОПРОВОДА"]
[null,null,"В ОКРУЖАЮЩУЮ СРЕДУ"]
[]
[]
[{"$nulls":6},"=",57.8,"Вт/м"]
[]
[]
[]
[null,82.5,"tв - ","средняя температура теплоносителя, град"]
[null,25,"tн - ","среняя температура окружающей среды,град"]
[null,80,"aв -","коэф. теплоотдачи от теплоносителя к стетнке трубопровода, Вт/(м2град)"]
[null,14.730495168499704,"aн -","коэф. теплоотдачи от наружной поверхности изоляции в окружающую сруду, Вт/(м2град)"]
[null,0.2,"м/с","aн = 11,6 +7 * корень (V), где V - скорость движения воздуха, м/с;"]
[null,0.0212,"dв - ","внутренний диаметр трубопровода, м"]
[null,0.0268,"dн - ","наружный диаметр изоляции, м"]
[null,1000,"li - ","теплопроводность i-ого слоя изоляции, Вт/(м2град)"]
[null,0.0268,"diн -","наружный диаметр i-ого слоя изоляции, м"]
[null,0.0212,"diв -","внутренний диаметр i-ого слоя изоляции, м"]
[]
[]
[]
[]
[null,null,null,21.3,33.5]
[null,null,null,2.8,3.2]
[null,null,null,15.7,27.1]