EXPERIENCE OF A STAGE-BY-STAGE RETROFITTING OF THE GENERAL HOUSE VERTICAL HEATING SYSTEM INTO IN APARTMENT HORIZONTAL

Abstract

The article considers the main mistakes in the design and construction of district heating systems, presents the problems of residential buildings in Ukraine built in the 60-90s of the last century, which unlike modern residential buildings with horizontal two-pipe regulated systems, are equipped with one-pipe vertical non-regulated heating systems with cast iron radiators or steel convectors. They have no shut-off and regulating valves, no individual regulation of heat consumption by each flat and actually turns into one heating device, where heat consumption can be regulated only by gate valves at the building inlet. As a consequence, due to the imperfect design of heating systems, 80% of the housing stock in Ukraine do not have the possibility of regulated, economical heat consumption. The article considers the practical experience of retrofitting of the general house vertical unregulated heating system into a regulated apartment horizontal heating system with its own commercial heat metering devices. The need for such a phased reconstruction of the heating system by replacing the old building-wide vertical one-pipe system with a two-pipe horizontal one is dictated by economic considerations for the consumption of fuel and energy resources, the requirements of modern standards and, most importantly, the creation of a real opportunity for all subscribers and suppliers to regulate the production of heat energy. Objective economic analysis shows that the cost of retrofitting of the heating system into a regulated apartment horizontal heating system is cheaper than autonomous heating with individual gas boilers. Reconstruction of in-house heating systems is an objective necessity, without which it is impossible for the subscriber to have a real influence on his own heat consumption.