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Last seen: Sep 23, 2026
And gas boiler that operates weather compensation does exactly the same, for the simple reason that you need a higher flow temp for dhw than for space...
Yes mine also. It seems a sensible approach to me, much more sensible than making DT across each emitter the same in a system where the aim is to ope...
I completely agree. However DT can only change by a small amount (~5C) in a tolerably well adjusted setup and each degree it changes is equal to half...
I think because 6-8kW, which a 22mm pipe can deliver at a typical DT of 5, gives a sufficiently fast recovery time for many people and... 22mm gives...
Well exactly that. Much of the discussion above focussed on 'delta T' being in this case the difference between flow and return temperatures. But th...
I must say that the recent posts about buffers are most encouraging. When I first embarked on this journey it seemed almost heresy to suggest on a pu...
Because it's been done in a completely muddle headed way. The requirement for accessing a grant has been conflated with both planning and building re...
One of the many reasons I think that MCS should be taken entirely out of the regulatory loop. That which needs to be regulated should be regulated th...
@fazel @bontwoody Anyone who said central heating system design is easy lied, particularly in a retrofit situation where one of many often competing...
Like most on here I'm not a heatpump engineer either. My background is in physics and engineering with a recent diversion into local government. So ...
If sizing for 35C leads to rads of a tolerable size then in principle i agree ( although you can do both) However I'm not chasing what you suggest, i...
That's interesting data provided that a) in doing your calculations you adjusted the lwt in the case of a cycling pump so that the average power...
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Degrees of Separation
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@mrkfm, I’m definitely not trying to put anyone off get...
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Depends on what controls the pump! Thats the whole poi...
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