1 / 12

Environment and use of ground geothermal energy in Estonia

Environment and use of ground geothermal energy in Estonia. Argo Jõeleht. Estimated number of installations presently. All heat pump systems >30,000 Ground source heat pumps 6500 – 8000 Borehole-based systems 100 – 200. North. South. 200. 0. -200. -400. -600.

coby
Download Presentation

Environment and use of ground geothermal energy in Estonia

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Environment and use of ground geothermal energy in Estonia Argo Jõeleht

  2. Estimated number of installationspresently • All heat pump systems >30,000 • Ground source heat pumps 6500 – 8000 • Borehole-based systems 100 – 200

  3. North South 200 0 -200 -400 -600

  4. Example of closed loop system North Estonia near Tallinn Built in 1994 Two wells (150 m and 144 m) One for geothermal purpose, the other one for groundwater

  5. Monitoredtemperatureson heating seasons 14 – 17

  6. Example of open loop system Oisu village, Central Estonia Built in late 1990s 2 wells (à 10 m) Distance between wells 18 m HP power 22 kW (+18 kW since 2009)

  7. Open system in central Estonia

  8. co-effect of two heat pumps

  9. Summary • Geothermalapplications are mostlybased on horisontalloops • Untilnowitisdifficulttogetdrillingpermissionsforborehole-basedapplications • There are technologytobuildgroundcoupledheat pump systemswithminimum risk • Situationwithborehole-basedapplicationsischanging, butstill a lotofexplainingisneededtoincreasetheknowledgebase at all levels

  10. Thank you!

More Related