Green Building Bible, Fourth Edition |
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Posted By: ComeOnPilgrimHi Peter: direct, gravity, no loading valve. Hence I'd prefer something simple if possible.
Posted By: GreenPaddyWhy would it chose middle over top based on temperature?
if you heat a TS at the base, it destratifies, as circulating currents are set up internally
Posted By: ComeOnPilgrimI guess it depends a bit on what's happening at the moment. The next step is probably just to measure the temperatures at the pipes entering / exiting the stove and entering / exiting the TS when it's running.That is the best way. I discovered that when my boiler started I was getting a slug of cold water into the top of the tank. By fitting a diverter valve, the water circulates through the boiler until the boiler can heat it to a high enough temperature. The valve only lets through water that is hot enought to the tank.
Posted By: ComeOnPilgrim(2) Water loses about 5º getting from the stove to the TS (about 6m vertically, and 4m horizontally)
Posted By: ComeOnPilgrim(4) There is decent stratification, at least when the stove is burning at a constant temperature. This is not exactly what I've seen, so I wonder what happens when the stove cools a bit so that the water supply to the TS is slightly cooler than immediately before - perhaps this mixes up the tank?
Posted By: Peter_in_HungaryAre the pipes from the stove to the store insulated ?? With about a 10m run this is about the same as a small radiator, if they are not insulated then perhaps insulate them and save most of the loss on flow and return.
Posted By: Peter_in_HungaryWhen the stove cools to the point that it is cooler than the store the circulation will stop. As the stove progressively cools the circulation will progressively slow.
Posted By: Peter_in_HungaryWhat is the size of the store and what is the size of the stove - to water and to the room (air)?
Posted By: ComeOnPilgrimI think I'm going to try connecting the top and middle TS inputs to the pipes to and from the stove. I'll leave the bottom connection, but openable in case it is needed to cool the stove.
Posted By: Peter_in_HungaryIf you run on the top and middle connections with the bottom closed off then the bottom half of the store will never get heated by the stove.
Posted By: Peter_in_HungaryWas the stove running flat out during the measurement times?
Posted By: Peter_in_HungaryBTW whilst you are pouring heat into the store as described above is the room containing the stove getting over warm? And for how long can you heat the store before the room becomes uncomfortable?
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