In private homes, where all communications are done with their hands, often nipped by the frost pipe. During severe cold they form ice plugs up to several meters in length that completely blocks the lumen of the tubing. The reason of freezing and inadequate depth of trenches and bad insulation of the track. To help solve the problem of heating cable self-regulating heating pipes. Stretch it in the process of laying communication and the current pipeline.
- 1 the Principle of operation of self-regulating cables
- 2 Types of cable
- 3 Application
- 4 self-regulating Heating cable for heating pipes: installation
- 4.1 Interior installation
- 4.2 outdoor installation
- 4.3 Installation of the heating cable for water pipe (video)
The principle of operation of self-regulating cables
The heating wire consists of the following elements:
- two copper wires increased cross-section;
- the conductive matrix (the main heating and regulating element);
- the inner polymeric insulation;
- copper braid;
- external insulation.
On the basis of the self-regulating heating cable for heating pipes is the conversion of electrical energy into thermal energy. A characteristic feature of the wire that it only takes electricity, but does not transmit it. The cord can be cut into sections of desired length, from 20 cm to tens of meters. It is important to prevent sharp bending and physical abrasion of the copper core.
The regulation mechanism of the cable is easy. If the outside temperature the resistance of conductors of the matrix increases, and heat generation is reduced. And Vice versa. Thus, properly laid wire cannot overheat or burn out.
A useful tip! Buy a cable with a small margin. If it is not enough to the coil, the part of the pipe is still nipped by the frost, and all work will go down the drain. But the wire is too long is a chaotic system that is threatened by fire.
Types of cable
There are three types of heating cables — self-regulating, resistive and resistive mineral insulated.
Self-regulating cable is most prevalent among systems of electric heating. Main advantages:
- the ability to regulate heat without the control of the staff;
- significant savings of electricity.
The specified cable is classified by the power. Available products with maximum allowable temperature of 70, 105 and 135 degrees. The degree of heating depends on the thickness of the copper core — the bigger the diameter, the higher the temperature. The energy consumption for one meter of wire is about 30 watts. The cable recommended to connect via a separate transformer. Heating can be carried out on pipelines of metal, plastic, polypropylene.
Resistive cable heats up due to continuous and constant over the entire length of the resistance. These wires are produced by sections of a certain length that it cannot change. Each Bay is equipped with a clutch. Self-regulation in the resistive system is excluded, so there may be a large waste of energy. In addition, the cable to avoid overheating requires constant cleaning of debris.
Resistive wires with mineral insulation are used for heating of objects in aggressive environments — alkali, acid, salt. Products can also be used in hazardous areas, under high temperatures and loads.
From this article you can learn about this element of communication, as a pipe for draining sewage: its purpose, variants of existing products that can be purchased in stores, their characteristics and prices. Read more
Self-regulating heating cable for heating pipes used to supply heat for the following objects:
- Various pipelines, water pipelines and sewage networks.
- Process tanks, tanks, tanks with liquid.
- The square in front of the cottages.
- Roof and downspouts to prevent icing.
- The system of floor.
- Greenhouses and winter gardens.
- Terrariums, aquariums, closed biosphere.
Heating cable self-regulating heating pipes: installation
Installing the heating element is carried out inside or outside of the pipeline.
The introduction of cable into the pipe is done, if the communication channel is already under the ground and access to it is not. Then place the cable in the underground network is set to saddle with the withdrawal of the 1 see her screw pipe frame and have the wire. You need to pre-measure the length of the area requiring heating and adjust it to the size of the cable.
A useful tip! For heating systems with drinking water need of the product who are familiar with food and fitness. Usually cable for water pipes insulated safe fluorine-containing polymer.
It is impossible to hold the heating cord through a check valve. If the cable insulation is damaged, while using the water the person may be affected by electrocution.
For above-ground or newly laid communications cable is laid on top of the pipe. There are two main types of accommodation:
- linear. Wire roll, straighten and stack directly on the pipe. The length of the heating element in this case must be equal to the length of the planned area. The method is used for channels of small diameter (50 mm). Broaching several parallel cables along the pipe;
- spiral. On pipelines of medium and large diameter cable laid in a spiral.
Spooling or stretching along the tube wire, you must make sure to not have creases, stretching, compression, abrasion, transition tape through sharp detail. Put the heating cable self-regulating heating pipes, the plot is completely wrapped on top of the sticky aluminum tape. Conventional plastic adhesive tape is not necessary. Further, the tubing wrap any insulator in the form of half-cylinders. The joints of the insulation is compacted mineral wool and sealed with waterproof tape.
A useful tip! Prior to installation of the cable wrap tube with foil. Then the heat will be distributed evenly.
The cable runs from the AC. For a more economical expenditure of the electric power it is necessary to install a relay and thermostat. Then smart automation if necessary, and allows the user to enable and disable heated.
Installation of heating cable for water pipe (video)