# Help with this formula for the Thermal Expansion of a pipe please

• dirk_mec1
In summary, the formula for thermal expansion in a piping system is derived from a loop configuration with two vertical legs and a horizontal pipe section. The length ratio between the legs is 2L/5 and the spacing ratio between the legs is L/5. The formula can be found by referring to a loop diagram and using the calculations provided in the reference source.
dirk_mec1
I do not understand how this formula is derived:

Can somebody help me?

Source:

https://www.corzan.com/en-us/piping-systems/specification/thermal-expansion

Note: Important information needed is missing from the above thread post.
It is necessary to go to the reference source and view its "loop" diagram consisting of two vertical legs' with a length ratio = 2L/5 of the calculated L requirement with two standard 90° pipe ells at the top connecting a horizontal pipe section with a leg to leg spacing ratio = L/5 requirement to understand what apparently results in the above formula.
As a result the above appears to be a formula based upon all of the above loop configuration requirements.

berkeman

## 1. What is thermal expansion and why is it important for pipes?

Thermal expansion is the tendency of a material to expand or contract in response to changes in temperature. This is important for pipes because changes in temperature can cause the pipe to expand or contract, which can lead to structural damage or leaks.

## 2. What is the formula for calculating thermal expansion of a pipe?

The formula for calculating thermal expansion of a pipe is: ΔL = αLΔT, where ΔL is the change in length of the pipe, α is the coefficient of thermal expansion, L is the original length of the pipe, and ΔT is the change in temperature.

## 3. How do I determine the coefficient of thermal expansion for a specific pipe?

The coefficient of thermal expansion is a material property that can be found in reference tables or by consulting with the manufacturer of the pipe. It is typically measured in units of length per unit length per degree Celsius (or Kelvin).

## 4. Can the formula for thermal expansion be used for all types of pipes?

The formula for thermal expansion can be used for most types of pipes, as long as the coefficient of thermal expansion is known. However, it may not be accurate for pipes made of materials with nonlinear thermal expansion behaviors.

## 5. How can I minimize the effects of thermal expansion on pipes?

To minimize the effects of thermal expansion on pipes, it is important to properly design and install the pipe system, taking into account potential temperature changes. Additionally, using materials with lower coefficients of thermal expansion or incorporating expansion joints can help mitigate the effects of thermal expansion.

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