REVISITING DURABILITY OF PIPELINES IN POLYURETHANE FOAM INSULATION
Abstract
The article presents the results of the study of heat supply pipeline made of steel with thermal insulation of polyurethane foam in polyethylene sheath, operated in Kazakhstan.
The main objective of the study was to determine the service life of heat pipes with a polymer sheath made of high density polyethylene at temperature up to 150° C based on the methods given in local and foreign standards.
A possible variant of the operating mode of heating networks according to operation temperature schedule of 130/70° C for the city of Karaganda (Kazakhstan) is presented. Conclusions are drawn about increasing the life of pipelines in polyurethane foam thermal insulation with a protective casing of high-density low-pressure polyethylene. The dependence of the choice of starting materials for insulation and a waterproof casing is described. The reliability of heat supply systems which directly depends on the service life of heat pipes is analyzed.
About the Authors
A. Kalmagambetova
Karaganda State Technical University
Kazakhstan
Kazakhstan
T. Bogoyavlenskaya
Karaganda State Technical University
Kazakhstan
Kazakhstan
References
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Review
For citations:
Kalmagambetova A., Bogoyavlenskaya T. REVISITING DURABILITY OF PIPELINES IN POLYURETHANE FOAM INSULATION. Bulletin of Shakarim University. Technical Sciences. 2020;(3(91)):31-34.
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