**Calculation of thermal expansion of pipelines** is performed to determine the increase in the length of the pipeline section during heating, the need to install compensators for temperature elongation, and to determine the required compensating capacity.

The variation in the length of a pipeline section due to temperature expansion can be determined using the following formula:

**dL = a · L · (t _{max} – t_{min})**, mm

**t _{max}** - the maximum temperature of the hot water in the pipeline, °C.

**t _{min}** - ambient temperature during pipeline installation, °C.

**L** - the length of the pipeline section, m.

**a** – The coefficient of linear thermal expansion, expressed in °C^{-1}, depends on the physical properties of the material.

pipe material | coefficient [ a ] |
---|---|

Steel | 0.013 |

Copper | 0.017 |

Polyethylene - PEX | 0.2 |

Polybutylene - PB | 0.13 |

Polypropylene - PP | 0.18 |

Polyvinyl chloride - PVC | 0.08 |

Online Calculations

Calculation of pipe diameter by flow

Calculation of pressure loss in pipe

Pipe span calculation

Calculation of variations in pipe length

Calculation of heat loss from pipes

Calculation of heat losses from heating network pipes

Collector diameter calculation

Calculation of the temperature of a mix of flows

Calculation of the U-shaped compensator

Calculation of the Z-shaped compensator

Calculation of the L-shaped compensator

Calculation of the Axial compensator

Temperature curve of the heating system

Calculation of the throttle diaphragm

Data verification heat meter

What is cheaper to heat? gas, firewood, coal, electricity