Comentários do leitor

Heating And Protection of Pipelines From Freezing

por Tommie Stroup (2020-05-12)

Cable heating system (SNS) - "Frost pipeline" is a system used to protect pipes from freezing and maintain the desired temperature in the pipes.

Set the following system:

The heating cable - section length and a certain construction of installed capacity, prepared for connection to an AC voltage of 220 V, 50 Hz.
Thermostat; Wiring devices (RCD, magnetic starters), established in the CC (control cabinet); Mounting box (connection, ?????? branching); Folgoskotch - self-adhesive aluminum tape; Insulation.

The system is installed at the facilities where necessary to prevent freezing of water, storm water or sewer pipes, as well as where it is necessary to maintain a certain temperature in the pipes with hot water or other liquids.

Heated pipelines may be located both above ground and below ground at a depth of soil freezing. These pipelines are the most susceptible to direct influence of cold, so it is necessary to ensure their well-insulated, that is, the pipeline after installation of the heating system should be insulated. As the insulation using different materials such as - izofol, Energoflex or mineral wool. The thickness of the insulating layer may be between 10 mm and more. Insulation material should be protected from moisture. Otherwise, it can lead to a decrease in heat-insulating properties of the material.

There are different ways to install heating cables on the surface of the pipeline. The heating cable can be laid straight, spiral or multiple turnovers. The heating cable is installed on the pipe surface, either directly or through an aluminum layer (heating plastic pipe), fixed with adhesive aluminum tape, providing close contact between the cable and pipe.

To simplify system management and automation of process piping used for heating thermostats such as ETI-1551, complete with sensor type ETF-633. The use of thermostats to reduce energy consumption CND.

In the SPS - "Frost pipeline" using different types of heating cables and wires - resistive (KNNFPEV, etc.), intelligent (17FSM, CLT-25).

The required length of cable to make the cable installation method, the equipment are determined based on the characteristics and conditions of the problem - dimensions of the pipeline (diameter, length and configuration), the material production of pipe (plastic or steel), the location of the pipeline, the appointment of CND (the maintenance of a given temperatures or frost protection).

roof gutter heaters

Perform system design, to produce the subsequent installation and commissioning of the system, as well as qualified to give technical information to be specialists of "Chuvashteplokabel."

Installation and connection to the electrical network CNN - "Frost pipeline" can be done independently, shall be met and complied with all requirements of regulations PES SNP. Failure to comply with standards for the installation of the system affects its performance, so all the seeming simplicity of this work should be entrusted to professionals.

The use of "Frost pipeline" - is safe for human life, which services the heating cables. Fire safety is confirmed by the corresponding certificates heating cables used in the SPS - "Frost pipeline."

The undeniable advantages of CNN, "Frost pipeline":

Ease of installation and maintenance.
The economic effect.
Environmentally friendly.

I am roof maker. gutter heaters