Monitoring the installation

Collecting data from a groundsource installation in operation provides information on temperatures, pressures and flows and gives insight in the functioning of the system and it's efficiency.

The monitoring data is used to verify the design versus actual usage, to troubleshoot and to confirm energy savings. Evaluation of monitoring data will allow the end user to modify the operating strategy when for instance building usage and internal loads change.

Monitoring the wellfield

Monitoring can also be extended to measurements in separate observation wells or taking groundwater quality samples when BHE wellfields are installed in environmentally sensitive areas.

Monitoring of wellfield temperatures might not be restricted to a single groundsource installation, but could involve large scale developments, with long term temperature effects on the feasibility and performance.

Monitoring reports

Groenholland provides installation monitoring as a part of the turnkey package. Clients receive an (bi)annual report, with an overview of the key parameters of the installation and an evaluation of system performance and savings. As a standard, monitoring reports contain a fault & error log and service documentation.

Monitoring of temperatures might not be restricted to a single groundsource installation, but could involve large scale developments, with long term temperature effects on the feasibility and performance.

Etten-Leur project

 In 2006 the municipality of Etten-Leur (NL) started a 25 hectare new housing project with 1200 homes using individual groundsource heatpumps.

A feasibility report took into account the local geo(hydro)logy, regional groundwaterflow, energy demand and topography of the project.

Modelling revealed long term soil temperature developments and requirements for regeneration.

The groundwater flow across the project in combination with regeneration through cooling in summertime, set the requirements for every individual home as these were integrated into the building permit.

Individual homeowners need to achieve minimum requirements set for regeneration as a percentage of annual energy extraction from the ground.

Information on the energy behaviour of indiviual homes becomes available through questionaires coupled to available energy grants. Longterm project efficiency is secured by information on both individual users as well through monitoring of background soil temepratures.