[OpenTRV-interest] Explaining OpenTRV

Stuart Poulton stuart at poulton.org.uk
Thu Mar 23 14:09:37 GMT 2017

Just one observation, with the person stood in the room saying "Just right"
where the room has the thermostat why does the boiler keep firing ?

On Thu, Mar 23, 2017 at 12:20 PM, Adam Baylis <adam at castrads.com> wrote:

> Great work Hamish, I like your thinking on this. The more I played with
> the page you created the more it made sense.
> A couple thoughts from me:
> I agree with others, it's a lot of information at first glance. The mobile
> view / smaller screen version with just one house is much easier to digest.
> But I'd like to be able to choose which diagram I view when I do that
> rather than being limited just the no radiator valves option.
> The description for the top left room should say that it "heats up at the
> same rate as" the thermostat room, not it is "the same as" the thermostat
> room.
> You might need to tweak the energy wasted amounts. I found that it
> suggested that the energy saved is much more than the 50% you claim on the
> website.
> It's great to see the person saying too hot, too cold, just right. But I'd
> like to see a visual representation of how that accumulates over time. I
> can imagine that with radbot they're just right 95% of the time but with no
> controls it's only 50% of the time. Comfort is as big a selling point as
> efficiency for many people.
> The bar charts at the bottom are simple to understand, but the scientist
> in me would love to see them as cumulative time series data e.g. something
> a bit like this
> <https://toxics.usgs.gov/bib/graphs/graph_pngs/bar_year_cumul_all.png>.
> Then you can see when the wasted energy is generated. You'd probably need
> to be able to skip backwards and forwards along the timeline to make this
> useful though. So perhaps it's adding more complexity than is helpful.
> Could the energy wasted description (shown when you hover over the bars)
> be the same height for all controller options? Do you need to include it at
> all for the radbot + boiler controller option?
> One feature of radbot that's not shown on this is that it is a learning
> thermostat. So it will heat the house before you wake up in the morning and
> before you get home from work. Any ideas on how to show that feature?
> Finally, I think you might need something extra for the new scientist
> show. I imagine that people there will be more interested in how you do it,
> rather than what the benefits are. So perhaps your tool there should let
> you do something like turn a light on at the same time every day for a few
> (sped up) days and then see how radbot starts to pre-empt you being at
> home. You could do something similar with making noise, moving around and
> pushing the boost button.
> Hope that helps,
> Adam Baylis
> adam at castrads.com | 07779 235644
> Castrads Ltd
> 0161 439 9350 <01614399350> | www.castrads.com
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> On Wed, Mar 22, 2017 at 11:24 AM, Simon Hobson <linux at thehobsons.co.uk>
> wrote:
>> Hamish Findlay <hif2k1 at gmail.com> wrote:
>> > If you look at it on a smaller screen or shrink the browser window size
>> it will switch to only showing one house to give you an idea of what that
>> might look like.
>> Ah, that's a lot better.
>> There's a niggle about the energy bars. Surely the green "energy heating
>> occupied rooms" bar should be shorter (or at least different) as you go
>> down the list no TRVs > TRVs > radbot > Radbot + boiler controller ?
>> Tricky one as it'll depend on which room the man is stood in. So if the
>> man is stood in the "cold" room, the radbot options will actually use more
>> energy heating the occupied room - but if he's stood in the "hot" room then
>> they'll use less.
>> Also, the shading behind the text makes it look like the
>> radbot+controller has a lot of wasted energy when in fact there's next to
>> nothing there - perhaps not show the "Wasted energy" block at all when
>> hovering over that one ?
>> Also, it might help to animate the thermostat or radbot to indicate that
>> it's controlling the boiler.
>> Lastly, I'm wondering if the room descriptions should be different for
>> each mode - with radbots, saying the lower left room "will never get warm
>> enough ..." seems a bit odd.
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