| 摘要 |
construction, in particular, engineering equipment of buildings - water drains equipped with deicing devices. SUBSTANCE: a layer of insulating material is applied onto the drain funnel and drain pipe, and the electric heating elements are positioned directly on the outer surface of the drain funnel and drain pipe under the layer of heat- insulating material. Besides, the drain pipe has at least one air valve closing the drain pipe cross-section. EFFECT: reduced consumption of electric power. 1 dwg
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