FIELD: domestic or space heating systems.
SUBSTANCE: method comprises mounting the inner thin-walled flexible supply and return pipelines for feed fluids of the heating system inside a single outer thick-walled pipeline together with the inner thin-walled pipelines for secondary heat-transfer agents supplied from the heat power plants for permitting heat transfer from the secondary heat transfer agents to the feed fluids. The free space between the inner flexible thin-walled pipelines and common outer thick-walled pipeline is filled with an inert gas under a pressure of no less than 1.01 of the maximum pressure of the feed fluids or secondary heat transfer agents.
EFFECT: enhanced efficiency.
1 cl, 1 dwg
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