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"Gas Armageddon": Energy/electricity prices in EU/UK (and how to deal with them)
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tom66:
I can't see any reason heating district heated water would be illegal.  Presumably you have a heatmeter and are billed on the energy consumed.  The only concern would be if the return flow was hotter than the inward flow, that might break something.
MT:

--- Quote from: SiliconWizard on August 26, 2022, 06:30:34 pm ---So, not to derail this discussion excessively, but isn't this Great Reset finally rearing its ugly head?  ::)

--- End quote ---

Shush , not so loud, as they dont want to
nctnico:

--- Quote from: tom66 on August 27, 2022, 05:59:06 pm ---I can't see any reason heating district heated water would be illegal.  Presumably you have a heatmeter and are billed on the energy consumed.  The only concern would be if the return flow was hotter than the inward flow, that might break something.

--- End quote ---
No. District heating is a ring system where hot water keeps flowing around to make sure there is always hot water at every point. If you open up the return, you'll notice the water is hot. After doing repairs / replacements I always fill the system back up by opening the return in order not to get billed for energy I'm not actually using.  8)

The trick with adding your own source is that you keep the return open so your system stays pressurised but you add the option for a local loop or the long loop. In local loop mode, there is no water flow coming from or to the district heating system. Your own source would need a pump though to keep the local loop going.
Marco:

--- Quote from: nctnico on August 27, 2022, 06:19:46 pm ---No. District heating is a ring system where hot water keeps flowing around to make sure there is always hot water at every point. If you open up the return, you'll notice the water is hot.

--- End quote ---

I assume it measures flow and exit temperature (probably input and output flow, to detect leaks). You get charged by the Joule and just measuring flow and assuming the exit temperature is near the input temperature would be a dangerous assumption to make, you would pay less for the same energy with more efficient radiators.

PS. after looking it up, it does measure input and exit temperature but only input flow. Enough to determine energy extraction.
nctnico:

--- Quote from: Marco on August 27, 2022, 07:02:59 pm ---
--- Quote from: nctnico on August 27, 2022, 06:19:46 pm ---No. District heating is a ring system where hot water keeps flowing around to make sure there is always hot water at every point. If you open up the return, you'll notice the water is hot.

--- End quote ---

I assume it measures flow and exit temperature (probably input and output flow, to detect leaks). You get charged by the Joule and just measuring flow and assuming the exit temperature is near the input temperature would be a dangerous assumption to make, you would pay less for the same energy with more efficient radiators.

--- End quote ---
The meter that is installed in my house, measures flow and temperature difference between incoming and outgoing water. So it measures the energy (in Joule) that is being used by me.
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