Pipe area is a concept, which is used when calculating three different parameters of the product - the outer surface, inner surface and cross section. When making calculations, associated with the intersection, in some cases it is necessary to deal with the so-called living section. Having calculated the area, it is possible to determine the amount of required materials and the level of costs, necessary for laying and full operation of the pipeline.
Calculation of such an indicator, as the area of the pipe, may be required during the construction of the pipeline, as well as its insulation, painting and other activities
At the stage of designing a pipeline system, competent calculations of the area of the pipe can achieve important benefits, associated with different sides of the gasket, operation and maintenance. In particular, they, how to calculate the area of the pipe, will be associated with:
Knowing the area of the pipes, it is easy to determine the amount of materials to insulate the system
A formula can be used to perform calculations, memorable from a school textbook, and calculator capabilities, as usual, and online.
A formula will be needed to determine the area of the outer surface of the round pipe, which is used in calculations, made with a cylinder: S =? d l. For, to decide, example, with the required amount of paint or thermal insulation materials, you need to know the values of such parameters, as:
Value? we take, as approximately equal to 3,14.
pay attention! Working with paints and varnishes, focus on the manufacturer's estimated cost per square meter.
Thermal insulation requires additional calculations and costs, as it should be taken into account:
When performing calculations on the inner surface, especially hydrodynamic, we must not forget about some important points:
When calculating the area of a round pipe, the diameter and thickness of the walls are taken into account
The inner surface of the round pipe is calculated by the formula: S =? (D — 2n) l, operating values:
There is a nuance here, related to the type of pipeline used - pressure or non-pressure. In the case of a pressure pipeline, the calculation is much simpler and will require the involvement of the formula S =? r2. That is, to calculate the area (S) cross section of the pressure pipeline, in what environment, transported occupies the entire internal volume, values are used:? - Approximately 3,14; r is the radius, equal to half the inner diameter or half the outer diameter minus twice the wall thickness.
It is more difficult to deal with similar calculations, if you have to deal with self-flowing sewerage or water supply. In such systems, in contrast to the pressure, during almost the entire period of operation, only part of the walls is disturbed by the flow of the working medium, and not the entire internal volume. So, the value of hydraulic resistance is significantly lower.
On a side note! When performing hydraulic calculations, it is customary to operate with the concept of living section. Under it understand a part of section, relating directly to the flow of the working environment, which is located perpendicular to it.
What shall I do, dealing with the pipe, square in cross section? To calculate the area of a square or rectangular pipe, you can use an online calculator or use the formula S = Pl. In her, in addition to the size of the area (S) and length (l), the value of the perimeter of the perpendicular section is also used (P).
With all the simplicity of calculating the area of the pipe, to show negligence in performing this operation is hardly worth it. Mistakes can result in overuse of materials and money, and violations in the operation of the pipeline system.
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