SU31117A1 - The method of moving buildings in the two-pipe system of central water heating - Google Patents

Description

The invention relates to methods for heating buildings with a central water heating system with incentive circulation and using finned tubes as heating devices.

According to the proposed method, in order to preserve the uniform heat transfer of the ribbed pipes on all parts of the heating sections, a heating agent is passed through the pipes alternately in reverse directions, for implementing which method on the branches connecting the forward and reverse legs of the system, four valves, forming a switch-pulsator.

In FIG. 1 shows a scheme for implementing a method for heating buildings with a two-pipe central water heating system; FIG. 2-view of the horizontal heating section; FIG. 3- curve of temperature drop in the heating section; FIG. 4 is the same, with the opposite direction of the heating agent; FIG. 5 curve compensated heat transfer; FIG. 6, 7, 8 - the location of the cranes of the switch-pulsator in different moments of work.

With the passage of the heating agent (water) through the finned tubes and sections of the heating network, its temperature, as well as 82

and the heat transfer of the pipe at different sections of it, as the separator runoffs are removed, decreases, reaching a maximum value when the agent enters the pipe and descends to its minimum at the exit (fig. 3). With the opposite direction of the agent in the pipe, the same curve of temperature drop and heat transfer is obtained, but in the opposite position (Fig. 4). Passing a heating agent through the pipe, successively in that, then in the other direction, for both periods of the agent's movement, receive a compensated heat transfer from each section (Fig. 5).

When constructing a central water heating system using the above method, in each floor, ribbed pipes a are sequentially interconnected under the windows along the entire perimeter of the external walls (Fig. 1). From them, a ring is thus obtained that encompasses all heated rooms in the building. The water coming from the direct flow into this ring bypasses the whole building in each floor, giving a corresponding amount of heat to the rooms, returning to the already cooled backward. The direction of water movement in the system changes after a certain period of time. For example, for 30 minutes.

the water moves around the ring in one direction, then switches, and for the next 30 minutes the circulation goes in the opposite direction. This means that for any part of the heating ring, the average temperature of the water flowing in it per hour is exactly the same. Hence, the heat transfer of the pipes becomes independent of their degree of remoteness from the point of connection of the pipeline feeding the ring. If, with the existing arrangement of heating devices, the pulsating principle is not used, water gets to the farthest from the straight hundred-cubic pipes t already somewhat cooled and heat transfer from one square meter of heating surface will also decrease accordingly. This could lead to the fact that, in rooms with the same cooling, a different number of heating devices should be installed, which is the case, for example, with a conventional system.

Change in water movement in the wasp system | It is colored with a special pulsator switch. The latter consists of four cranes b (Figs. 6-8) mounted on the branches connecting the forward and reverse legs of the system, and is designed in such a way that during switching no sharp hydraulic shocks are felt. Such a switch is installed one for the whole building or even for a group of buildings and must be serviced by a special person.

In the position of FIG. 7, all four edges are open, in the position of FIG. 6, the first and the fourth taps are closed and the water flows in the direction I, 2, 3, 4; subsequently, the first and fourth taps are reopened (Fig. 7}, due to which the internal circulation through the taps and the heating network starts to increase in the system. After the internal circulation is established, the second and third taps are closed (Figure 8), after which the movement is established water in the direction of 4, 3, 2, Г, The change of direction can be made automatically by installing a device with a clockwork mechanism or operating according to the principle of a water turbine, which rotates from passing into @ dy.

The subject matter of the invention.

1. The method of heating buildings with a two-pipe central heating system with incentive circulation and using ribbed pipes as heating devices, characterized in that, in order to balance the heat transfer on any part of the heating stations, the heating agent movement in the system is alternately transmitted in the opposite direction. .

, 2. Application for implementation of the method according to claim 1, a pulsator switch, made in the form of four taps mounted on the branches connecting the forward and reverse legs of the system.