Last seen: Sep 22, 2025
@derek-m Understood! I've been thinking about the problem of assessing quantitatively the effect of on/off heating (eg when you switch it off ...
With an OAT of 5C which is what the graphs say you have, you would indeed expect that or better. Remember that cycling occurs when the heat pump cant...
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...
Latest Posts
-
RE: Repiping and Reconfiguring our Heat Pump System Including Removing the Buffer Tank
@grantmethestrength, if you pull the trigger on the FRV...
By Mars , 2 hours ago
-
RE: How to choose Towel Rails for an ASHP
@judith Yes I agree. They are extremely expensive. ...
By GrahamF , 2 hours ago
-
RE: Which temperature sensor for a Steibel buffer and Ecodan?
@downfield I have never added a buffer sensor as we nev...
By ASHP-BOBBA , 2 hours ago
-
Riello NXHM Monobloc Air Source Heat Pump
Hi, does anyone have any feedback on Riello NXHM Monobl...
By dgarvey , 10 hours ago
-
RE: Testing new controls/monitoring for Midea Clone ASHP
This is actually based on the same chipset as the Svena...
By Grantmethestrength , 13 hours ago
-
RE: Powerwall 3 or Myenergi or something else?
@adamk what you need is enough battery size to cover 3 ...
By Judith , 19 hours ago
-
-
RE: Say hello and introduce yourself
@jarlatheoin do put the MVHR in early it’s not an easy ...
By Judith , 20 hours ago
-
RE: How to Zone with a Single Room with UFH
We have exactly what you describe, one utility room wit...
By Judith , 20 hours ago
-
RE: Who's your electricity provider and what's your tariff?
@agentgeorge Come the Ist of October, the Cosy cheapest...
By Toodles , 21 hours ago
-
RE: Boxt Heat Pump Installation Experience
@ashfp Mine does have a buffer tank. That was my experi...
By Andrew J H , 1 day ago
-
RE: Help me keep the faith with my air source heat pump installation
I'm sure you are right, I was just trying to understand...
By JamesPa , 2 days ago
-
RE: Preparing for 2nd winter in new build house.
Yuch! So that's basically just an on/off control. I...
By Transparent , 3 days ago
-
Good day everyone. I'm new here and have a few question...
By Edin67 , 3 days ago
-
RE: MCS certificate SCOP vs real-world performance
That may be contributing to lower than expected SCOP. ...
By JamesPa , 3 days ago
-
-
RE: Mitsu PAR-WT60R Wireless Controller - options
How it does it's job is something of a mystery although...
By Abernyte , 4 days ago
-
@mixergy Thanks for the update, I would appreciate some...
By bontwoody , 6 days ago
-
RE: Is Your Broadband Router the Weak Link in Your High-Tech Home?
Unfortunately I'm not that well connected 😂 ...
By Scalextrix , 6 days ago
