Selection of design temperature for the main roads in the utility tunnels in the western region
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Let’s take an example. For example, in the Xinjiang region, winter temperatures can drop to -30 degrees Celsius. What should be the design temperature for the compressed air pipelines in the utility tunnels? I find it a pretty interesting question.
Does HaiChuan have an invitation feature on Zhihu? Find some experts to answer the questions: lol
Some people say the design temperature: 1. Refer to the temperature of the gas under normal conditions; 2. Others say it should refer to the ambient temperature. What do you think?
The design temperature must take the ambient temperature into account; in the absence of insulation measures, the design temperature should be at least -30°C. In fact, choosing a lower design temperature is simply to take into account the material of the pipes.
Actually, to be precise, it depends on the length of the pipe. By calculating the gas temperature at the end of the piping system, the design temperature can be determined, which in turn affects the choice of piping material
It is also necessary to consider whether it is a low-temperature and low-stress operating condition, in order to avoid material waste