Comparing Estimated to Actual Energy Loss

Having estimated heat loss by calculation it seemed a good idea to see if the results compared well to actual heat loss. To do this required measuring gas consumption. A series of manual readings were taken but it became obvious that these were not accurate enough for the one hour test intervals.  An automated solution such as the Current Cost device used on the electricity meter would be ideal. Some investigation was required.

The results of the gas readings plotted against outside temperature can be found on www.conserveandsave.co.uk. As can be seen there is no discernable correlation and hence the need for finer measurement over the time period.