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Last seen: Aug 25, 2026
I find that with weather forecasts you need to be careful how you 'read' them. For example a '30% probability of rain' could be because you are edge ...
"Can you define "Short Cycling"? Is this short Cycling , acceptable , during April , during the prime Short cycling month of April?" Unfortuna...
@derek-m Thanks, that would be much appreciated!
There are various online calculators for flow and pressure. Temperature loss in pipes should be either negligible or within the insulated envelope o...
Personally I both play with models (railways) and work with them. Experiment and theory complement each other. and modelling is not a modern obsessi...
Yes but this reduces the remaining voltage (pump head) available not the current (flow). And friction losses don't cause a temperature drop they cau...
Sorry but the analogy doesn't work. Pipes convey heat from one end to another according to your equation, they don't dissipate it according to this e...
In the analogy you are trying to draw, the voltage is the pump head (pressure) not the water temperature. The flow rate is the current and the impeda...
If you haven't already you might want to re-read my earlier post which has a link to a worked example of spatial zoning and draws some analogies betw...
Are you certain of 6.5C, Have you checked the actual temperature at the output of the Samsung?. If so, are the pipes insulated and are the flow rates...
Im not sure how helpful the analogy is. The key point is that the buffer is (at DC) most probably a relatively low impedance path compared to the hea...
Good, we agree then! The problem is to persuade @iantelescope and, more to the point, his installer. My personal theory (based on what @iantele...
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Degrees of Separation
Latest Posts
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RE: How Accurate Is My DIY Heat Loss Calculation?
Any idea how efficient your gas boiler is? Is it a 50 y...
By Old_Scientist , 1 hour ago
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?
@dave, I think @jamespa has probably identified the mos...
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RE: Plug and play solar. Thoughts?
My thought is simple. Bring it on and bring on plug in...
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RE: Heat Geek mini store vs pump size
Yes I agree, that’s why Heat Geek have most likely sele...
By Tomtheheatingengineer , 2 days ago
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RE: Who's your electricity provider and what's your tariff?
@chandykris Swings and Roundabouts, you win some…. ...
By Toodles , 2 days ago
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@tomtheheatingengineer, thank you, and welcome to the f...
By Mars , 2 days ago
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RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
@majordennisbloodnok @tomtheheatingengineer For my ...
By JamesPa , 2 days ago
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RE: Do I add Air Con or MVHR to existing A2W ASHP?
There is scope for product development here. I for one...
By JamesPa , 2 days ago
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RE: Is the "divide by 2900" rule still valid?
Really flow rate is a pipework limitation not a water p...
By JamesPa , 3 days ago
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RE: The good, the bad and the not that great – my heat pump installation
@burtis, I’ve followed this thread pretty much from the...
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RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
First time poster here but I can share my experience as...
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RE: Is it the house or the equipment?
...which, I've found out, is pretty much impossible to ...
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