[OpenTRV-interest] Weather compensation (was: Boiler controller (Was: The shop is open!))

[John]

Hi Niall

On 22/12/16 11:50, Niall Robinson wrote:

> Secondly, one idea is to use the forecast temperature to preemptively
> adjust the house. You would need to parameterise the heat capacity of
> the house but I think an algorithm might be able to learn that over
> time. Just an idea - not sure if it would work.

I think (as Tim Small has remarked) that you're describing weather 
compensation, which is increasingly widely available on modern boilers 
and is possibly going to be required in a coming revision of Part L of 
the Building Regulations.

Some manufacturers implement it by requiring an outside temperature 
sensor (usually a vastly over-priced thermistor in a plastic box!) be 
installed on a north-facing outside wall (which can be tricky to 
arrange). Worcester-Bosch (and maybe others? IDK) also let you do it 
through their "Wave" controller which gets a local outside temperature 
reading via a wi-fi connection to the interwebs (which obviously depends 
on Worcester's server staying around for the life of the installation).

-- 
John Stumbles                                    http://stumbles.org.uk
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