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The vertical misalignment of the double pipe system

Update:27-10-2018
Summary:

The vertical imbalance of the single-tube system is cha […]

The vertical imbalance of the single-tube system is characterized by the higher the flow rate and the higher the room temperature at the end room; the smaller the flow rate, the lower the room temperature at the end room. According to this thermal characteristic, for a single-tube system, one temperature control valve per household should follow the following principles. installation:

1.For a single-tube downstream system, a temperature-controlled valve shall be installed on the radiator at the end of the indoor system;

2.For a single-tube indoor system with a spanning pipe, a temperature-controlled valve shall be installed on the inlet water supply pipe or return pipe of the indoor system. The remote temperature sensor of the temperature control valve shall be placed at the end of the indoor system. in;

3.For the upper split single-pipe downstream system of the old building, one temperature control valve of each riser should be installed on the radiator of the lowest floor room. At this time, the heat supply should be measured by the heat distributor. It should be pointed out that the use of such a temperature control valve has the advantages of improving the regulation performance of the heating system and reducing the initial investment of the project; the disadvantage is that the room temperature of each room is the same standard and cannot be adjusted as desired. .

A two-tube indoor system with a temperature-controlled valve installed at the indoor entrance. The vertical misalignment of the double pipe system is caused by changes in the system flow caused by changes in the natural circulation action head. The ideal solution for this type of system is to have a thermostatic valve on each radiator. Some real estate developers are reluctant to increase investment and cancel all temperature control valves, although there will be no serious imbalances in the indoor system, but it will inevitably lead to vertical imbalance between the layers in the building. This is also proven in engineering practice. In order to reduce the cost and not affect the adjustment function of the heating system, in the double-tube indoor system, a temperature control valve is installed at the indoor entrance, and the remote temperature sensor can be placed in any room. This solution, although the room temperature adjustment of each room lacks flexibility, it improves the unevenness of heat and cold between the layers in the building.

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