18 May 2017

O.2.7.3 District Aquifer Thermal Energy Storage (DATES)

Use of ATES/HP (Aquifer Thermal Energy Storage combined with Heat Pumps) is since the early ‘90s a popular way of heating and cooling larger (office) buildings in the Netherlands. The moderate climate and capable aquifers make a good combination for this technique. The downside of using this technique for just a single building is mostly a mismatch between the potential capacity of the aquifer and the power demand of the building. In stead of equipping groups of buildings with separate ATES/HP systems, it can be profitable to combine several systems in a District ATES (DATES) system. This article will show you the principle of DATES with real life examples. In these cases DATES has some advantages compared to ATES/HP or district heating solutions with central heat/cold production. Compared to ATES/HP it’s possible to drill fewer wells depending on the aquifer capacity. DATES can be more flexible and have reduced network cost compared to central heating/cooling systems. The network allows energy exchange between buildings, which reduces the need for, or capacity of, regeneration installations and mobilises residual capacity from single buildings.