Aquifer thermal energy storage following up on the tu delft geothermal well

Aquifer thermal energy storage following up on the tu delft geothermal well: A study on how a low-temperature aquifer thermal energy storage system can cool and heat the campus in accordance with its climate goals by 2050

van Esser, Beer (TU Delft Civil Engineering and Geosciences)

Bloemendal, Martin (mentor)
Vardon, Phil (mentor)

Delft University of Technology

2019-07-11

In 2020 TU Delft will build a geothermal well producing enough energy to power all its faculties and a number of buildings surrounding the campus. This is done to meet the climate goals the TU set itself: an energy neutral campus by 2040. Geothermal plants are designed to produce for 30 years. After this period, by 2050, the TU has to be energy-neutral without the geothermal heat flowing from deep underground. To prevent falling back to fossil fuels there is need for a new energy source. In this feasibility study one of the options is investigated, low temperature aquifer thermal energy storage (LT-ATES). This technology stores heat-energy produced during summertime in aquifers, during wintertime this water is used to heat the faculties. It was found that a LT-ATES system is viable. A 19 MW ATES system containing 23 cold and 23 warm wells to a depth of 180 meters is needed. Cooling during summertime is not sufficient to charge the system to meet the winter heating demand; therefore an additional solar thermal collector field of 35.000 m2 is needed. Designing a strategy for 2050 means that there is a considerable amount of assumptions to be made. To optimize the LT-ATES-system, a more in-depth study should be performed.

ATES
HVAC
aquifer

http://resolver.tudelft.nl/uuid:d9ade9ab-4815-430a-8588-ef35ce6bf9c7

Student theses

bachelor thesis

© 2019 Beer van Esser