Digester update

As first noticed at reference 1, there is an energy installation in Sainsbury's car park at Kiln Lane. Yesterday (Tuesday), I noticed that the apparently sturdy wooden fence has partially collapsed, affording a better view of the interior, revealing the name 'GEOSCART' rather than the 'SCART' I had managed previously.

Using this longer key, Bing and Google between them turn up all kinds of stuff, in particular a substantial contract from Sainsbury's to put these units in some of their stores. Also the fact that Geoscart has been reborn as ERDA energy, of references 2 and 3. While references 3 and 4 suggest that this contraption does not, as I had thought, extract heat from warm rocks deep underground, rather they are into capturing and using the heat generated by all the refrigerators and freezers that are to be found in supermarkets.

And while there is an overground tank in the container like object, the end of which is visible in the snap above, I think there are also boreholes which are something to do with heat exchange, the heat in question coming from the refrigerators and freezers rather than from warm rocks. All far too technical for me, but perhaps these boreholes are the source of the confusion evinced by the young lady noticed at reference 1.

Let's hope that Sainsbury's get around to mending the fence before the local youth find amusement with the now accessible pipework. And there is certainly something going on inside as plenty of sound is escaping from it, despite all the heat insulation.

Reference 1: http://psmv2.blogspot.com/2015/11/digester.html.

Reference 2: https://www.erdaenergy.com/.

Reference 3: https://www.erdaenergy.com/about/our-services/food-retail/.

Reference 4: https://www.rapidclimatecontrol.com/news/ground-source-heating-crosses-over-to-retail-sector-as-sainsburys-looks-to-cut-costs.