| Autor: |
Usikov, Sergey, Kashurkin, Alexey |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2023, Vol. 2791 Issue 1, p1-8, 8p |
| Abstrakt: |
The issue of determining the hydraulic characteristics of the shut-off and control valves of the heating system is relevant. The hydraulic characteristics of control valves are used in the design of heating systems, as well as when setting them up. The quality of the entire system depends on the reliability of these characteristics. However, in the Russian Federation there is a rather small number of laboratories involved in the determination of the hydraulic characteristics of valves. The existing methods for determining the hydraulic characteristics of fittings are not perfect and are not suitable for the peculiarities of the operation of water heating systems. The measurement accuracy depends not only on the accuracy of the measuring devices, but also on the method of pressure sampling. The article discusses several options for taking pressure on a test bench when testing one of the types of balancing valves. The study was carried out using mathematical modeling using k-ε turbulence, with a stationary fluid flow, and the boundary conditions were selected from the conditions of operating modes of water heating systems. Conclusions are drawn about the non-uniformity of the pressure diagram when the fluid flow passes through the samples under study. The error of various methods of pressure sampling is estimated. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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