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

[John]

Nial

On 22/12/16 11:50, Niall Robinson wrote:
> Firstly, the Met Office has a decent API for weather
> data http://www.metoffice.gov.uk/datapoint Full disclosure - I work
> there so I'm biased!

Do you know where I could get a set of mean hourly temperature data for 
a location? The Met Office's Historical Station Observations 
http://www.metoffice.gov.uk/datapoint/product/historical-station-obs 
offer mean daily max and minimum temperatures but I'm looking for better 
granularity: ideally average temperatures for each hour of the day.

What I'm trying to do is model the energy requirements of a house and do 
what-ifs: e.g. what if I increase loft insulation from 50 to 250mm, or 
replace single- with double-glazed windows, or fit a room thermostat, or 
TRVs, where there are none, or reduce room temperatures by 1C: how much 
energy and therefore money will it save over a year, and what's the 
pay-back time (for changes that cost money to implement).

I managed to do it approximately with degree-day data[1] but I'd like to 
be able to model different energy requirements at different times of 
day: obviously if you want to maintain your house at, say, 20C, it'll 
cost less to do that in the middle of the day than the middle of the 
night. So I'd like to be able to say "what if we all go to bed (or at 
least turn the heating down) an hour earlier: how much money would it 
save?". For that I need to know what temperatures are at different times 
of the day, not just averages (or max and min) for a day.


[1] from Vilnis Vesma who runs an energy management company, has a 
website http://www.enmanreg.org/ and newsletter which is worth signing 
up for for its interesting and often snarky commentary on energy 
management principles and practice


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