@alfapat It looks to me as though there is either a lot of mixing of flow and return going on in the LLH or the sensors are all over the place. Have you ‘calibrated’ the sensors? By that I mean bundling all the sensors together and noted any differences in their readings. My four were different but a pair were a whole degree different to the other two - the two ‘pairs’ were noted and as the other differences were within 0.1 degree, I have just made mental allowance for the degree difference in readings. It doesn’t matter which is the nearer to correct temperature - we are only looking at the relative differences here. Regards, `toodles.
Toodles, he heats his home with cold draughts and cooks his food with magnets.
@alfapat Yes, bind all four probes in a bunch, perhaps with a rubber band around them all so they are in close contact to ensure they are all seeing the same conditions. If the probes are waterproof, they could then be suspended in a glass or bowl of water and then observe the differences once they have settled down. I had the additional complication that 3 of the 4 had less then fresh button cells - in fact 2 died during this testing phase so I had to delay until fresh supplies were purchased, (I note that Brendon Uys {@heacol} is discussing distortion as it pertains to LLH and Buffers in another thread,[‘4 Port Buffer Tank Connections’ that you may care to read too] in your ‘spare moments’ 😉) Regards, Toodles.
@alfapat Yes, bind all four probes in a bunch, perhaps with a rubber band around them all so they are in close contact to ensure they are all seeing the same conditions. If the probes are waterproof, they could then be suspended in a glass or bowl of water and then observe the differences once they have settled down. I had the additional complication that 3 of the 4 had less then fresh button cells - in fact 2 died during this testing phase so I had to delay until fresh supplies were purchased, (I note that Brendon Uys {@heacol} is discussing distortion as it pertains to LLH and Buffers in another thread,[‘4 Port Buffer Tank Connections’ that you may care to read too] in your ‘spare moments’ 😉) Regards, Toodles.
Yes Ill do that.
Let me pose the question , forgive me if Im wrong but if a pump is delivering into a tank and the outlet is at the same level as in position , then say it is at 20l a minute and the outlet is recieving this and is at a figure of 15litres then that would cause turbulence , but if the exit is at 22 /lmn then it comes to be less turbulence. It seems to me that I should swap flows vice versa , like output from HP lower than than feed to LLH then return higher to HP . Am I wrong?
@alfapat The general consensus is that the secondary circuit should run at a slightly lower rate thean the primary. This is a matter that @heacol is far better to advise you on than I might. Regards, Toodles.
Toodles, he heats his home with cold draughts and cooks his food with magnets.
@toodles to my very basic understanding, and again @heacol is the best person to confirm this, with a buffer tank in the middle, the primary and secondary circuits should have matched up flow rates to avoid distortion in the buffer.
@alfapat The general consensus is that the secondary circuit should run at a slightly lower rate thean the primary. This is a matter that @heacol is far better to advise you on than I might. Regards, Toodles.
I do not know where your consensus comes from, certainly not from me. Any variation of flow on either side of the buffer tank WILL cause distortion and a reduction in performance resulting in a higher bill. It is governed by the laws of thermodynamics.
Buffer tanks can work if you are lucky, I am yet to make one work successfully 100% of the time and I do not gamble with other peoples money, it is unethical.
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