Lambda measurements
We have a comprehensive programme of continuous tests of lambda values on LOGSTOR’s pre-insulated pipes from the standard production line. The numerous test results are used to calculate a Gauss curve (shown below), which presents the average lambda values and the distribution of the results.
Straight pipe, axial continuous
- Internal
- External
- Normal distribution
The lower the average lambda value, the greater the total energy savings during the total service life of the pipe system. The examples below illustrate the reduction in costs linked to energy loss during the lifetime of the pipe system, which are proportional to investments in the pipe system.
Straight pipe, axial continuous
DN 50/140 Operating temperatures: 80°C flow, 40°C return. Energy consumption with lambda value 0.023 W / mK instead of 0.024 W / mK ≈ 15% of the pipe cost / 30 years
Operating temperatures: 130°C flow, 70°C return. Energy consumption with lambda value 0.023 W / mK instead of 0.024 W / mK ≈ 30% of the pipe expenses / 30 years
The examples above incorporate several variable parameters. These variations mean that a specific calculation may produce a different result.
Straight pipe, conventional
- Internal
- External
- Normal distribution
FlexPipe
- Internal
- External
- Normal distribution
The lower the average lambda value, the greater the energy savings during the service life of the pipe system.
See the examples: FlexPipe, DN 20/90 Operating temperatures: 80°C flow, 40°C return. Energy consumption with lambda value 0.022 W / mK instead of 0.023 W / mK ≈ 16% of the pipe cost / 30 years.