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Is the theoretically calculated temperature drop of insulated pipes similar to the actual temperature drop?

2019-05-29View Original

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A friend checked the theoretical calculated temperature drop of insulated pipes against the actual temperature drop – are the values similar? I have a project where the theoretical temperature drop is supposed to be less than 10 degrees, but in reality it’s around 40 degrees. Even if there are some deviations in the construction process, the difference shouldn’t be that large. Does anyone have experience in this area?
Reply #22019-05-29
Then the effect you’ve achieved is already quite good. According to our theoretical calculations for heat retention, the temperature should be 24°C, but in reality the temperature in certain areas remains above 100 degrees. How is this reasonable?
Reply #32019-05-29
That’s so exaggerated; I don’t know what the problem is.
Reply #42019-05-29
To analyze one reason, let’s put it this way: the empirical formulas provided by standard guidelines all have a premise, namely that these formulas are derived under ideal conditions. In particular, the values chosen for various parameters are composite figures, and certainly not the actual values. Second, the basis of these formulas is the assumption that materials are isotropic and uniformly continuous, whereas in actual construction they are discrete and discontinuous; there are also certain errors in the manufacturing process of materials. Third, an ideal environment does not exist; actual operating conditions such as temperature, pressure, wind force, and the contact between pipes and insulation all result in deductions, which is why there is a discrepancy between the calculated values and the actual values. It’s fine if there are errors, but the key issue is that this kind of result doesn’t follow a linear pattern, so it’s impossible to predict it.
Reply #52021-07-21
yangshu.gitee.com Pipeline online calculation software
Reply #62021-07-23
The software upstairs is really good; it would be even better if it could be downloaded!

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