In one of the apartments, I met this installation of a heated towel rail:
An ordinary man in the street who mentally imagined the movement of a liquid, the question arises, how will such a dryer work, because heated water will not get into it?
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Logically, if you think about it, he will be right (but not quite). I marked hot water in red. Blue cold. Such an ARTIST of me, but still)
Naturally, there is a desire to put a shut-off valve, which will block the flow of water in the lintel and forcibly direct hot water through the towel.
Remember, you cannot put taps on the jumper, it is forbidden to forcibly shut off the circulation of water in the common house riser.
This prohibition is associated with those situations when, foolishly or unknowingly, the "dryer" connection taps and the faucet on the lintel are shut off. In this case, the DHW circulation completely stops, which leads to the cooling of the hot water.
But what can be done? After all, this heating device will not perform its function! Many people who do not know how a heated liquid interact with a colder one will think.
In the photo above, you can see the work of the riser in normal mode, the tenant will not block the riser, everyone will be happy. But at the same time, his heated towel rail will always be hot for the reason:
- The bypass is displaced from the main axis of the riser, the liquid is directed in a straight line into a half-calf, by inertia it will push through the "zagulins" of the dryer. This is the situation in the photo of the tenants.
And what if the riser does not have an offset bypass, in the picture below, you can see it working:
- The cooled water in the dryer rushes to the bottom, the usual law of physics, thereby filling the towel with warm water, and cold water is removed by the circulation of the riser.
One of the options for improving circulation in a heated towel rail is:
- Narrowing of the diameter of the lintel in relation to the diameter of the riser, thereby the water "looks for an" easier "way and the bulk of the liquid rushes into the towel, thereby warming it up.
In any case, the displacement of the bypass line (jumper) from the axis of the riser is the best option for normal circulation of hot water in the heated towel rail. In this case, the narrowing of the lintel and the installation of shut-off valves are not required.
From SW. Plumber Timofey Mikhailov. Please rate the article! Thank you!