Details
| Original language | English |
|---|---|
| Title of host publication | 12th International Symposium on District Heating and Cooling |
| Pages | 12-15 |
| Number of pages | 4 |
| Publication status | Published - Sept 2010 |
| Event | 12th International Symposium on District Heating and Cooling - Tallinn, Estonia Duration: 5 Sept 2010 → 7 Sept 2010 |
Publication series
| Name | 12th International Symposium on District Heating and Cooling |
|---|
Abstract
For the design and calculation of buried district heating pipe systems the magnitude of radial contact pressures acting on the pipes is of importance, since these pressures affect the friction forces which may be mobilized. For parallel buried pipes, the stress distribution is generally expected to be different from the case of a single pipe. The present investigation compares radial stresses according to current design directives for buried single pipes with numerically calculated stresses for parallel buried pipes. The calculations show a deviation of the radial stress distributions in particular for the springline area. The results are compared with former theoretical investigations, which predicted a reduction of radial contact pressures between the two pipes. This is verified for small-diameter pipes. With larger pipe diameters a stress increase was identified between the pipes. However, with regard to the average radial pressure only slight differences between single pipes and parallel buried pipes were found.
ASJC Scopus subject areas
- Energy(all)
- Energy Engineering and Power Technology
Sustainable Development Goals
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12th International Symposium on District Heating and Cooling. 2010. p. 12-15 (12th International Symposium on District Heating and Cooling).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - On the radial contact pressure of parallel buried pipes for district heating
AU - Weidlich, I.
AU - Achmus, M.
PY - 2010/9
Y1 - 2010/9
N2 - For the design and calculation of buried district heating pipe systems the magnitude of radial contact pressures acting on the pipes is of importance, since these pressures affect the friction forces which may be mobilized. For parallel buried pipes, the stress distribution is generally expected to be different from the case of a single pipe. The present investigation compares radial stresses according to current design directives for buried single pipes with numerically calculated stresses for parallel buried pipes. The calculations show a deviation of the radial stress distributions in particular for the springline area. The results are compared with former theoretical investigations, which predicted a reduction of radial contact pressures between the two pipes. This is verified for small-diameter pipes. With larger pipe diameters a stress increase was identified between the pipes. However, with regard to the average radial pressure only slight differences between single pipes and parallel buried pipes were found.
AB - For the design and calculation of buried district heating pipe systems the magnitude of radial contact pressures acting on the pipes is of importance, since these pressures affect the friction forces which may be mobilized. For parallel buried pipes, the stress distribution is generally expected to be different from the case of a single pipe. The present investigation compares radial stresses according to current design directives for buried single pipes with numerically calculated stresses for parallel buried pipes. The calculations show a deviation of the radial stress distributions in particular for the springline area. The results are compared with former theoretical investigations, which predicted a reduction of radial contact pressures between the two pipes. This is verified for small-diameter pipes. With larger pipe diameters a stress increase was identified between the pipes. However, with regard to the average radial pressure only slight differences between single pipes and parallel buried pipes were found.
UR - http://www.scopus.com/inward/record.url?scp=79952668292&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:79952668292
SN - 9789949230150
T3 - 12th International Symposium on District Heating and Cooling
SP - 12
EP - 15
BT - 12th International Symposium on District Heating and Cooling
T2 - 12th International Symposium on District Heating and Cooling
Y2 - 5 September 2010 through 7 September 2010
ER -