Calculation of variations in pipe length
depending on the material and temperature
EXAMPLE
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 · (tmax – tc), mm
tmax - the maximum temperature of the hot water in the pipeline, °C.
tс - 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 several 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