Some basic HP questions for those in the know

[ReedRichards]

6 hours ago, Gordo said:

How do we find out which HPs don’t look at internal temperature? Look at controller data sheet maybe. 

If you had a gas boiler that was OpenTherm compatible you could buy any third party controller that also supported OpenTherm and that should give you the option of Load Compensation.  There is no standard equivalent to OpenTherm for heat pumps and (I think) only one obscure heat pump that has OpenTherm compatibility.  So if you want Load Compensation you have to use the heat pump manufacturer's own controller.  Your next problem is that I'm not aware that any heat pump that can do Load Compensation calls it by that name.  For example my LG Therma V heat pump calls it "Air + Water" control, as opposed to Water control.

 

Load Compensation should help your heat pump to modulate down to the best output to maintain a steady room temperature.  It should also help your heat pump to warm up your house quickly when required, although that could cost you more than a slower warm up.  

Edited 9 hours ago by ReedRichards

[Gordo]

48 minutes ago, JamesPa said:

Thanks.  Is anyone doing any work on it.  It's surely much less complex than weather forecasting but arguably at least as important.  Isn't that what BRE is for?

I'm pretty sure BRE are quango private organisation now that are commissioned by government and others to research now (another money saving exercise). Government don't want to finance much id say. We are all doomed i tell you. Long gone are the days when you can look to government for help lol

[JohnMo]

33 minutes ago, ReedRichards said:

There is no standard equivalent to OpenTherm for heat pumps and (I think) only one obscure heat pump that has OpenTherm compatibility

A lot of heat pumps can be operated via 0-10v and ratiometric thermostats. So mine if connected will alter flow temp via a settable curve similar to weather compensation. So in effect I could have weather compensation plus have a variation of flow temp based on thermostat output.

 

Pressure mine would not be the only one, as nearly all A2A are controlled in a similar way.

[MikeSharp01]

All we really need is data if we have enough of it we can classify / regress everything, all the factors. No-one in no heat gain from people, cooker not on - same, somebody home tweaking up the stat not comfortable - who home we know the individual comfortable levels. It's all about the unreasonable effectiveness of Data with enough of it very good models are easy even with simple technologies.