Will the glass tube level gauge in an outdoor hot water tank freeze in winter?
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Will the glass tube level gauge in an outdoor hot water tank freeze in winter? Water temperature is 70 degrees, in the northern outdoors; the lowest temperature is minus 15 degrees. Has anyone used it? We have chosen a top-mounted float magnetic flap level gauge, but we still hope that fellow sailors will engage in thorough discussions on this issue. This post was last edited by polarbear501 on 2009-3-4 07:32]
Of course it will freeze, no matter how high the temperature of the medium is. Since the flow rate of the level gauge is relatively low and the changes in flow are not significant, it will definitely freeze over time if there are no substantial changes in the liquid level, especially in winter. Solutions: 1. Add insulation; 2. Frequently change the liquid level
Excessive temperature differences can cause the glass tube level gauge to burst.
Can’t convective heat transfer maintain the temperature inside the glass tube?
It will get damaged by the cold; a thermal insulation layer or heating device is needed
It can maintain heat; the water level in the tank remains fairly stable, and the water temperature should also stay above 70 degrees. But theoretically, the main consideration is which is faster: heat dissipation through the level gauge or convective heat transfer; whether freezing occurs or not should reach a balance point depending on the water temperature and the length of the glass tube. I wonder if there are any people who have actually used it, and what the experience was like?
I think that when the water level remains basically stable, freezing will definitely occur. We have a hot water tank here; the temperature of the hot water is 95 degrees. Two glass tube level gauges have been installed, each one being 1 meter long. Generally, when the temperature is at -5 degrees, freezing does not happen. But once it drops below -5 degrees, freezing is inevitable. I understand what you mean. I think this requires complex thermal calculations; please let me know if you find an answer
500,000-ton atmospheric pressure unit, residue oil cold water tank, glass tube level gauge; no heat tracing was installed, resulting in damage due to freezing in winter; only the overflow pipe can be used for monitoring.
“Rather than spending a lot of money, a more conservative choice was made: a float-type magnetic flap level gauge. Thank you all for your experience.
If a flap-type level gauge is not of the type with heating for insulation, it will still freeze down below 5 degrees Celsius in winter; therefore, for outdoor level gauges in northern regions, those with heating for insulation must be used.
Of course it will freeze, because the fluid in the level gauge is essentially at rest and there are not many changes in its level. Therefore, when the level does not change much over an extended period of time, freezing will definitely occur in winter. Solution: Add insulation.
In the north, the average minimum temperature in winter is around -30°C, which will definitely freeze the liquid level indicator in the water tank. Moreover, if no insulation is provided on the surface of this indicator, ice formation will occur. In the south, the lowest average winter temperature is around 1°C, which will not cause damage to the water tank level control device. Solution: 1. Add insulation. 2. Copy-style level agents can also be used. 3. If it has already frozen, blow on it with a small amount of steam, being careful to avoid pipe damage. Looking forward together to expert guidance
It will freeze, right? The water in the level gauge isn’t flowing! From a heat transfer perspective, heating should not cause cooling to occur as quickly!
It should freeze. Because the water level in the level gauge doesn’t change for a long time, heat transfer is slow, so the temperature outside drops quickly.
There is a possibility of damage due to freezing; it is recommended to use other methods for level measurement.
Maybe using several short level gauges in series would work.
In Tangshan, it’s frozen over. The indoor make-up water tank of the geothermal heat pump is on the roof and has also frozen.