PIPE SIZE CALCULATOR IN AN IRRIGATION SYSTEM

The piping system in an irrigation system is likened to the transportation network in a city or a country. It plays an extremely important role, directly affecting the performance of an irrigation system.
Choosing a small pipe diameter can reduce initial costs a bit, but will incur a lot of costs during operation, especially energy costs as well as the irrigation system making it difficult to reach maximum efficiency. On the contrary, choosing a tube that is too large will cause waste.
Therefore, we need to do the pipe size calculator to determine the minimum pipe size, and moreover the optimal pipe size in an irrigation system. The optimal pipe size is one that allows the amount of water passing through them to reach a velocity between 1.2 and 1.5m/sec.
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Pipe size calculator driptec

Variables

  • Flow rate: how many water outcome in one second, one hour (litre/second, c.m/hour)
  • Water Velocity: the speed water will run in the pipe. Normally it is not exceed 1.5m/s
  • Pipe size: ID – inside diameter (mm)
  • Pressure lost allowed: it mean that how much pressure loss through the pipe can be accepted.
  • Pipe length: The more length of the pipe lateral, the bigger pipe size required.

SIMPLE PIPE SIZE CALCULATION

Minimum Pipe Diameter to Limit Velocity to 5 ft/sec (1.5/sec)

Flow Rate:
Minimum Pipe Inside Diameter (pick the next largest pipe size):
optimal pipe size calculation driptec
Flow Rate In The Pipe:
Pipe Length:
Pipe material
Maximum Allowable Pressure Loss:
Minimum Pipe Size:

 optimal pipe size calculation

Calculate the optimal pipe size in the irrigation system.

The optimal pipe diameter is a reasonable diameter that balances technical factors, investment cost factors, and operating cost factors.
Technically, the optimal pipe size is the pipe size that allows a volume of water to pass through with an acceptable velocity and pressure loss.
In addition, it is also related to pipe length. Usually a longer pipe requires a larger diameter.
The optimal pipe size calculation formula is somewhat different from the simple minimum pipe size calculation formula above when there is an additional limit on pipe length and pressure loss limit. The formula for calculating the minimum optimal pipeline is simply based on the water flow through the pipe.

RELATED CALCULATORS

Pipeline pressure loss driptec

Water Velocity

Used to calculate the velocity of water in a pipe. Bigger pipe is more expensive, but keeping the water velocity low is important to limit pressure losses due to friction, water hammer, and pipe movement due to water momentum changes inside the pipe.

The optimal water velocity in an irrigation system is in range 1.2 to 1.5m/sec (4 to 5.0ft/sec)

Link: Water velocity in the pipe line

Pipeline pressure loss driptec

Pipeline Pressure Loss

This calculates the pressure or friction loss along a given length of pipeline with a specified inside diameter and flow rate.

Link: Pipe line pressure loss calculator

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