The thermal network is a system of portions of a heat conductors strongly and densely connected among themselves on which heat by means of the heat carrier (stream or hot water) is transported from sources to consumers, and then comes back. Because of the fact that thermal energy makes circulation, thermal communications always have an even number of pipes. Depending on the number of laid pipes, networks are subdivided into the following types: multipipe, two-pipe and one-pipe. Thermal networks are laid in ordinary and PU foam isolation. There is the significant amount of thermal points for supply of thermal energy of the necessary parameters.
The energy received from a boiler room or TPP, moves to consumers through personal heating units or through the central thermal networks, and only from them they lay networks of the 4 pipes to buildings and houses. Two pipes are intended to connect heating system, and two others to include this or that object in hot water supply.
In a settlement heat supply an important role is played by water thermal networks. These communications are used more often as they are universal. Generally they are subdivided into water thermal high-level networks and water thermal distributive networks. But such pipes have significant distinctions.
- Distributive networks are heat conductors of small diameter, from 50 and to 250 mm. These pipelines are characterized by intra quarter use, that is conduct to consumers.
- High-level networks are heat conductors of the big size, from 300 and to 1000 mm. They are intended to connect areas of consumption and sources of giving of heat.