KTH och geoenergi. Borrhålslager Alberto Lazzarotto, Post doc Patricia Monzó, doktorand

Transcription

1 KTH och geoenergi Borrhålslager Alberto Lazzarotto, Post doc Patricia Monzó, doktorand Djupa borrhålsvärmeväxlare Willem Mazzotti, doktorand Björn Palm, Professor Köldbärarvätskor Monika Ignatowicz Styrning Davide Rolando, post doc Akviferlager Mohammad Abuasbeh, doktorand Hybridsystem (sol+geo) Nelson Sommerfeldt, doktorand Joachim Claesson, Docent Hatef Madani, Bit. Lektor

2 Deep and Coaxial Borehole Heat Exchangers for Ground Source Heat Pumps Depth [m] Aim: Identify advantages/drawbacks link to the use of deep and coaxial borehole heat exchangers Temperature [ C] Willem Mazzotti mazzotti@kth.se Stockholm 510 m Uppsala 340 m Asker m

3 Modellering och uppföljning av stort borrhålslager

4 Partners Solhybrid AB BRF Moranvikan BRF Timmermannen 2

5 Aquifer Thermal Energy Storage: an insight into the Future Mohammad Abuasbeh, PhD candidate José Acuña, Project leader KTH Royal Institute of Technology Gothenburg,

6 Aquifer Thermal Energy Storage Cold well Temperature 3-12 ⁰ C Hot well Temperature ⁰ C Advantages High capacity (high massflow rate) Low payback time (2-3 years) Negligible noise level Possibility for free cooling Higher SPF Disadvantages Extensive preparation period Long term permission Continuous maintainance Dependant on geological location Additional Heat exchanger

7 KTHs ATES project Four working packages Thermal, chemical and microbiological conditions evaluation of the ground Data collection and system operation monitoring Installation of the measuring equipment and the collection of water level and temperature data Calibration of thermal & groundwater models by using the measured data

8 Recent Activities Publication in Kyla+ magazine Poster presentation at EGU 2016 Meeting with project partners Preliminary heat tracing tests International collaboration with ORMEL & NGU, Norway

9 Measurement Facilities 1. Rosenborg 2. Lilla Klåveröd 3. ORMEL Norway 4. Gallerian

10 Rosenborg Rosenborg 3 & 4, m2 Water extraction& infiltration: 50 l/sec Cooling power 700 & 800 kw Operational since March 2016 Owner: Vasakronan Rosenborg 3 Rosenborg 4 Brunnsviken

11 Rosenborg Heating and Cooling From Aquifer System Heat exchangers 3-4 Warm wells 2 Cold wells

12

13 Rosenborg Well measurement instruments Observation well and sensors Insulated pipes

14 Rosenborg Heat exchanger measurement instruments Insulated heat exchangers Temperature sensors + Waterflow meter = Energy flow meter

15 Rosenborg Siemens heating and cooling system data & control Data collection Temperature Waterflow Pressure Waterlevel Siemens monitoring program

16 Rosenborg Data visualization tool using Matlab

17 Rosenborg Fiber optic cables planning for installation

18 Distributed Temperature Sensing DTS DTS Instrument DTS Instrument T 1 T 2 T 3 T 4. T n-1 T n

19 First Heat Tracing Experiment in Aquifer and Borehole

20 Equipment Test in Borehole

21 Heat tracing: Equipment Tests in Aquifer

22 Preliminary results Heat supply 200 W. Well not in operation Assumed horizontal flow Forced convection correlation Calculated groundwater velocity Higher power needed

23 Groundwater and heat flow modelling Hydraulic parameters are calibrated today based on pumping tests Thermal parameters are guessed based on literature There are rarely possibilities to calibrate models Collaboration with ORMEL FEFLOW and MODFLOW

24 Groundwater sampling Test 1: North to South Water flow about 40 l/s Test 2: South to North

25 Some Sampling Results

26 Lilla Klåveröd

27 International Collaboration ORMEL Norway ORMEL Optimum utilization of groundwater for heating and cooling in Melhus and Elverum Drilling program in Elverum Groundwater and thermal modelling (FEFLOW & MODFLOW) Data analysis and system design

28 Investigation Drilling Program in Elverum

29 Investigation Drilling Program in Elverum Drilling 9 observation wells to gather information about the sediment and water infiltration rate along the depth in collaboration with: NGU, NTNU, Elverum municipality, KTH

30 Investigation Drilling Program in Elverum Resultant information Data from drilling rig Visual Water infeltration rate

31 Installed diver for data collection Example of resultant profile along the depth

32 Thanks for listening!