I haven't read any. In my view the theory is so good though that it is unnecessary.

It has to be the closest scenario to either steady state [basic u-value] calculation or dynamic simulation. I've done both and the predicted sayings are huge. No reason to doubt they would be otherwise provided installation is in accordance with best practice.

I am part of a university-based research project under which we would very much like to explore undertaking just this sort of before-after monitoring.

Is there anyone out there planning to install EWI next summer? Let's gather a list!

Me too! West country, me.

Great!

We (on the project team) are Lancashire-based; but travelling isn't a problem.

It seems we are all planning well ahead. :-)

Posted By: nikhoward

Posted By: ikimikiI am part of a university-based research project under which we would very much like to explore undertaking just this sort of before-after monitoring.

Is there anyone out there planning to install EWI next summer? Let's gather a list!

yes

and cornwall

There is a real serious problem with before and after monitoring, this leads to the NIBE fiasco and other problems.
I am about to embark on a 3 year study of energy use (all going well) and I have found it very difficult to convince people that they need to know where they are before they do any improvements. What is the saying, 'marry in haste, repent at leisure'.
Over the last few years I have kept all my bills, though only this year have I kept weekly readings (I have logged data for the last couple of years though, just need sorting out), I know when I did improvement and what they are.
Now the caveat, human behaviour makes the biggest difference, it can account for up to 40% difference in energy use, but even if it is 20%, that variation will swamp most improvements made. This leads to a statistical nightmare (an area I work in), this is why I do little experiments to establish whether what I think is happening actually does. Though these are limited in scope, have scalability problems and the logging equipment is not of the greatest precision and accuracy, it does show what is happening and one can quickly determine (within a month usually) if something is a success (does what I thought) or a failure (does something else or nothing).
What I would say, for those that are seriously considering this as an area to study is to get some cheap temp loggers and a cheap 3 channel energy meter and start keeping records. Weather data is easy to get hold of generally, so compensating for that is easy enough. What would be really good is to embed some sensors in a wall (tempted to do this soon, only involves a bit of drilling and sealant), then monitor with different levels of EWI fitted over the area. Cheap and pretty definitive if done right, could easily be done over the nest 6 to 7 months and may well give us all a better idea.
Anyone up for that?

You should hear them down 'ere me hansom

I was thinking of something along these lines http://wirelesstags.myshopify.com/
for room, wall and window temps, combined with matching radiator temp readings.

Aim: as close to 'fully sensored' as one can economically achieve.

This way one is looking at the performance of the building conditional on behaviour (how much heat one is pumping into each room).

The 'neat' thing about the above-mentioned system is that one can even log the movement of shutters, doors, and more.

Well, the others on the project are "ubicomp" computer scientists. Sensing is part of what they do.

The objective of this strand of work would be to plug the above-identified paucity of longitudinal combined temperature and energy-behaviour mapping, spanning the winter before EWI and the winter after EWI.

for some before and after data on refurbs see http://retrofitforthefuture.org/
is your's chippy , i know it's someone who posts here.
http://retrofitforthefuture.org/viewproject.php?id=270#graphs

Hi Steamy "T",

Yes, I came across that thread. It's a nice implementation.

But for instrumenting up one or more houses, I gravitate toward the http://wirelesstags.myshopify.com/ type of system because of (i) no wires means easy, constraint-free sensoring, (ii) ease of scalability, with up to 255 sensors on a single wireless tag manager, (iii) continual, automatic upload 'to the cloud' is possible, without further hardware.