Electric heating is used to prevent the pipes of the outdoor outdoor water supply from freezing. Electric heating is used to prevent the pipes of the outdoor outdoor water supply from freezing.
Published on:
2023-03-17 11:51
When running water pipes through two sites (such as expressway service areas), outdoor open overhead gasket is common in the open air. Especially in the northern part of my country, where the outdoor temperature in winter is below 0 °C, the fluid in the pipeline can freeze if it remains for a period of time. The pipeline antifreeze problem needs to be addressed urgently.
For fire-fighting plumbing pipelines where the fluid in the pipeline is in a static state for a long time, it is unrealistic to prevent the liquid from freezing in the pipeline during freezing only by increasing the thickness of the insulation layer, and other insulation measures are required. External electric heating heat preservation method.
In electric heating, the need for electric heating required to maintain a certain pipe water temperature in the fire water pipe decreases with the thickness of the air temperature layer. With the increase in the thickness of the insulation layer, the heat release of the pipeline decreases, and the additional heat release is also reduced; in the same area, when the thickness of the insulation layer is constant, the heat release increases with the increase of the pipe. The larger the diameter of the pipe, the larger the hydraulic radius, and it is necessary to maintain a certain water temperature on the pipe per unit of external area, which requires more heat, so more heat is required for electric heating. With electric heating, the need for electric heating, which is necessary to maintain a certain water temperature in the pipe in the fire water supply system, decreases with an increase in the thickness of the air temperature layer. With the increase in the thickness of the insulation layer, the heat release of the pipeline decreases, and the additional heat release is also reduced; in the same area, when the thickness of the insulation layer is constant, the heat release increases with the increase of the pipe. The larger the diameter of the pipe, the larger the hydraulic radius, and it is necessary to maintain a certain water temperature on the pipe per unit of external area, which requires more heat, so more heat is required for electric heating.
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