[OpenTRV-interest] Adaptive comfort

Chris Skerry chris_skerry at icloud.com
Tue Jul 12 15:54:27 BST 2016


I wonder if I can upset the question a bit with this  —  

My understanding of comfort for us humans depends upon 3 different external factors

1.  Temperature
2.  Humidity
3.  Air movement.

Lets assume that in almost all situations the air movement is almost zero.  If a house is draughty, then it is not that expensive to fix.  I found installing cavity wall insulation in two houses made all the rooms more comfortable, less temperature change at the walls, and less draughts.   

Humidity is expensive to control, as I think you would need some air-conditioning.  But it is not expensive to measure.

I think the house owner could develop a comfort graph for the house with humidity versus temperature, so the system would measure the humidity, look at the graph and set the temperature level to suit.  The heating system would then heat to the required temperature.

My Evohome system gets an external temperature forecast from Honeywell.  This is used to set the time of ‘heating on’ so the room temperature is at the requested level at the requested time.  However it takes no account of humidity, perhaps a future update. . . . . ?

> On 12 Jul 2016, at 16:05, Tim Small <tim at buttersideup.com> wrote:
> Hello,
> I was wondering if there were any explicit plans to try and use some of
> the "adaptive comfort" research findings to vary the temperature
> set-point (in order to optimise for "minimum comfortable" temperature),
> e.g. based on physiological adaptation?
> I know that personally 19 degrees normally feels too cold at the start
> of the heating season, but is probably fine by the end of it (and 18.5
> is OK in the rooms which have triple glazing, but I can't really go any
> lower than that without discomfort, although I know that there are
> people who can).
> Knowable influences include current and past (up to a month IIRC) indoor
> and outdoor temperatures.
> I'm wondering if some sort of phone-based "how comfortable are you" app
> would be good (very much as an add-on rather than a pre-requisite).
> Cheers,
> Tim.
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