The issue with steam temperature
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At 3.5 Mpa, the temperature of steam is around 270 degrees. If steam leaks at this pressure, will the temperature of the leaking steam also be 270 degrees? And if the steam leaks into a clean container, will the temperature of the steam inside that container still be 270 degrees? Please let those who know answer; thanks, bonus points appreciated
Obviously not. Isn’t the situation you’re describing exactly the same as that in a flash tank? If it leaks into a tank, you need to consider what the pressure in that tank is; the temperature is related to the pressure in the tank.
Saturated steam enters a system with a lower pressure through a throttle valve; initially, the pressure drops sharply due to expansion, while the temperature does not change significantly, resulting in superheated steam. First, there is superheated steam at 270°C, after which the temperature begins to drop until it becomes saturated steam at a lower temperature
The temperature of the container will definitely rise; this depends on factors such as the extent of the leakage, the size of the container, heat dissipation, and pressure. It could reach 270°C, or it might be possible for the temperature and pressure to drop
At a pressure of 3.5, it is 270 degrees; obviously, the pressure inside the container is not that high, so a large amount of heat must be released outward. There is a strong relationship between steam temperature and pressure.
For the original design, leakage must be taken into consideration; the design pressure and temperature – I think the previous values should be used
If it leaks into a device at 0.1 MPaA, the temperature may drop rapidly to 100 degrees due to heat transfer, and further cooling will result in it turning into water.