Industrial chimney design calculations
Flow Engineering is specialised in industrial chimney design calculations. One of our activities is the design of chimneys, flares, stacks, and other slender structures. We can not only take care of the design of the industrial chimney, but we can also do provide damper systems when needed to prevent vibrations.
At Flow Engineering, we understand the importance of precise and reliable design calculations for chimney manufacturers. Our team of expert engineers is dedicated to providing you with tailored solutions that will optimize the performance and efficiency of your chimneys.
With our industry-leading expertise in vibration engineering, we provide specialised design calculations and innovative solutions to address vibration-related challenges, in particular for chimneys, vortex shedding vibrations. By implementing our advanced techniques and utilizing high-quality tuned mass dampers, we ensure enhanced durability, reduced maintenance, and improved operational reliability for your chimneys.
Contents of design calculation
Our design calculations account for all external forces acting on the chimney, including wind loads, dead weight loads, and seismic loads where applicable. Wind loads are analysed considering pressure in the windward direction, fluctuating pressures due to vortex shedding, and pressure differences around the circumference. This analysis allows us to determine the stress and bending in critical components such as the shell, flanges, baseplate, and bolts.
To ensure stability, we assess the cross-wind response induced by vortex shedding, as well as factors like shear force, vertical load, and overturning moment at the base of the stack. Additionally, our evaluation incorporates the Palmgren-Miner linear damage hypothesis to estimate the lifetime of the chimney, considering load cycles and stresses induced by harmonic loading from vortex shedding.
In cases where the calculated lifetime falls short of design expectations or cross-wind responses exceed acceptable levels, we can provide tailored solutions, including the integration of damper systems, which we can supply. By employing tuned mass dampers (TMDs), we effectively mitigate excessive vibrations and extend the lifetime of the chimney to meet design specifications.
- Preventing dynamic problems at the design phase
- Analyzing and solving vibration problems in existing structures
Industrial chimney design calculations: are Tuned Mass Dampers needed?
We need various data to design an industrial chimney and to make calculations. For example, we need the data regarding the environmental factors or intended location, the diameter at the base and top, height, platforms and added ladders. After that, we can calculate of Tuned Mass Dampers are needed to prevent vibrations. To be able to calculate this, we need the exact data we also need for the design and the drawings of the structure. We make these calculations according to EURO, CICIND or ASMI code; we have great experience and familiarity with these codes. Then we can deliver a detailed report including, if necessary, suggestions to prevent failure caused by vibrations. If you want to know more about our industrial chimney design calculations, please do not hesitate to contact us by calling +31 (0)180 – 63 11 60.
