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Berlin AquaDom explosion - what went wrong?

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tooki:

--- Quote from: tom66 on December 19, 2022, 09:24:22 am ---It is possible that the bar was using infrared heating to reduce costs, whilst the air was kept colder.  But it does seem a bit odd for a 'premium' location to do that.

--- End quote ---
Am I literally the only person on the entire internet who simply went and looked for photos of the damned atrium?!? Everyone is just speculating speculating speculating, when the photos make it crystal clear: it’s an indoor space. No radiant IR heaters, no half-outdoor environment, nope, just plain indoors.

https://www.domaquaree.de/en/See-and-Experience.html
https://www.radissonhotels.com/en-us/hotels/radisson-collection-berlin/restaurant-bar



--- Quote from: tom66 on December 19, 2022, 09:24:22 am ---But, after last orders, maybe they did reduce the air heating power to save money?

--- End quote ---
I doubt it would save any power anyway, since the huge thermal mass of the water column would stabilize the air temperature around it, and the water had to be maintained at a stable temperature.


--- Quote from: tom66 on December 19, 2022, 09:24:22 am ---Regardless it's clearly a terrible design flaw if colder air could lead to the failure of these structures.  Heating systems fail sometimes!

--- End quote ---
I haven’t seen any evidence that this explanation has any legitimacy whatsoever. Nobody really knows where it originated, but it wasn’t the result of an engineering analysis of the failure. My guess is that someone who walked into the lobby post-burst noticed that it’s cold inside, which it would be since all the doors to the outside were washed out, and started babbling.

Ian.M:
With a big warm cylinder in the middle of the atrium, unless the whole space was actively conditioned to the tank temperature, there must have been a considerable convection effect in wintertime, with air round the tank rising, being chilled by the glass roof (even if it was fairly well insulated), and falling nearer the atrium walls, so it seems likely that there would have been a gradual build-up of urban particulates on the exterior of the tank.   It would have needed regular cleaning to maintain the aesthetic effect,  possibly at intervals of a few years or so, possibly more frequently.   I'd bet it was cleaned when the tank was drained for maintenance back in summer 2020.

- 2020 maintenance

tom66:

--- Quote from: tooki on December 19, 2022, 10:51:07 am ---
--- Quote from: tom66 on December 19, 2022, 09:24:22 am ---It is possible that the bar was using infrared heating to reduce costs, whilst the air was kept colder.  But it does seem a bit odd for a 'premium' location to do that.

--- End quote ---
Am I literally the only person on the entire internet who simply went and looked for photos of the damned atrium?!? Everyone is just speculating speculating speculating, when the photos make it crystal clear: it’s an indoor space. No radiant IT heaters, no half-outdoor environment, nope, just plain indoors.

--- End quote ---

Apparently ;).  I didn't think to check the hotel website, I had assumed they would nuke everything whilst the hotel was still soaked in salt water.

OK, so it doesn't seem that temperature is a likely cause.

ebastler:
This thread is good for months of idle speculation, until the insurance experts release their actual assessment of the fault. Has anyone looked into the position of the planets yet, or the effect of 5G networks?  :horse: 

jonovid:
explosion - maybe after nord stream 2, it was something dropped into it.  accidents will happen like in a movie the Dam Busters :-X

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