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Project Updates for collection: Geothermal Projects

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  1. Installing fiber optics

    Hi everyone, We had a successful day of collecting geophysical logs in the borehole. I have seen print outs of this excellent data, and is an important part of the geologic characterization. Thanks goes out to Tim Young for coming out of retirement to help us complete the work.

    Tomorrow we will install the U-bend and fiber-optic cable in the borehole. Our task is to sink a 400-foot log tube filled with water (weighing ~600 lbs) down the hole. For those nearby you may want to drop by for a visit. Once this is done, we will proceed to grout the borehole closed.

    Cheers,

    Andy

  2. Last drilling update

    Hi everyone,

    We finished drilling today and advanced the borehole to a depth of 385 feet.

    Tomorrow we will collect geophysical logs of the borehole. If you want to drop by we should be in full swing by 11 am. It will take some time to clean out any material that has collapsed in the borehole overnight and make sure the hole is full of mud before logging the open hole.

    Best,

    Andy

  3. Daily update

    Hi everyone, As expected our rate of drilling today slowed when drilling the shale bedrock. The crew was able to drill an additional 25 feet to a depth of 355 feet.

    Next week, since Monday will be the last day we have to drill the hole deeper, we have decided to stop coring and just drill straight through so that we can reach the target depth of 450 feet. Tuesday is needed to clean out the borehole so that geophysical logging can be done on Wednesday. On Thursday and Friday, we will install the geothermal loop and fiber optic cable and grout the hole closed.

    Have a great weekend.

    Andy

  4. Daily update

    Hi Everyone, We are starting out Wednesday morning at 294 feet, about 5 feet into the bedrock. The crew will be widening the hole this morning from 5 inches to 5.9 inches before going deeper into bedrock. Looks like a nice day for drilling!!

    Andy

  5. Daily update

    Hi everyone,

    After a morning of thawing out the drilling system from well below freezing temperatures on the weekend, we were able to reach 240 feet. With the top bedrock being <60 feet, it is likely they will reach it on Tuesday.

    My colleague Jason Thomason will be at the site on Tuesday while I am out of town.

    Best,

    Andy

  6. Daily update

    Hi everyone,

    We had a successful day 2 after deicing the system. We are now down to 165 feet and heading into the oldest glacial strata. If you are following along with the log I sent, we are about 170 feet on it.

    We will start up again Monday morning.

    Best,

    Andy

  7. daily update

    Hi everyone,

     

    After day 1 we have drilled to a depth of 90 feet. This is excellent progress with snow much of the day, and not getting in the ground until late morning.

    So far, the geology is similar to previous drilling in the area (see log attached).

     

    Cheers,

    Andy

  8. Funding Approval for Geothermal Characterization/Monitoring Station

    Evan De Lucia and Mohamed Attalla approved $65,610 of funding from the Carbon Credit Sales Fund for a Geothermal Characterization/Monitoring Station at John Bardeen Quad.

     

    An email of approval is attached below.

    The project proposal is attached below.

  9. Feasibility study to be done

    Associated Project(s): 

    Due to the complexity of this project, F&S recommended conducting a feasibility study before installation.  It is estiamted to cost approximately $10K and take about one month to complete.

  10. EUI at Fruit Farm Admin Building

    Please see the attached Excel file for some Energy Use Intensity (MMBTU/GSF) and (kBTU/GSF) calculations for the Fruit Farm Admin Building.  I have also attached an Energy Star Portfolio Manager Technical Reference which gives numbers for average U.S. Energy Use Intensity by Property Type.  These numbers are given in kBTU/GSF for comparison.

     

    The good news is that the numbers have been decreasing from 2011 through 2017.  Since 2018 is not over yet it would not be fair to count that number, but from 2011 through 2017 the energy use intensity appears to have decreased to about half of its starting value!  The numbers range from about 299 MMBTU/GSF to about 153 MMBTU/GSF (about 45 kBTU/GSF to about 23 kBTU/GSF). 

     

    If you look in the Energy Star Portfolio Manager document, the UIUC Fruit Farm is on par with a small retail office (at the higher EUI levels from 2011) to a warehouse or other unoccupied space (at the lower EUI levels from more recent data).  This may be an indication of the level of activity of the facility, or it may just reflect the fact that you are getting a lot of geothermal energy (three to four units of geothermal energy for every one unit of electricity).  If you look in the table you will see that a laboratory is listed as 78.8 kBTU/GSF, which is about 3.5 times the 2017 calculated value of 23 kBTU/GSF for the Fruit Farm.

     

    Please note that the numbers I am comparing the Fruit Farm to are the site energy numbers in the Energy Star Portfolio Manager document, which reflect the amount of energy you are using at the site (meter readings).  Source energy numbers are higher and include losses due to energy conversion and distribution from where the energy was originally generated (likely a coal or natural gas plant in Illinois).

    - Frank Holcomb

  11. steam use at greenhouses

    Associated Project(s): 

    The Deep Direct Use geothermal project has completed a preliminary assessment of steam use for greenhouses on UIUC campus. Steam usage in the greenhouses at Turner Hall and Plant Sciences building were compared with Lincoln Hall (pre and post renovations) for the period 2013-2018.

     

    Generally, the steam use in greenhouses is 3-5 times higher (mmBTU per square foot) than in an academic building. Together, the greenhouses have produced ~25MT CO2/MWh) over the 5-year period.

  12. iWG meeting minutes April 9th, 2018

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