Aquifer thermal energy storage reference manual: seasonal thermal energy storage program Page: 52 of 99
This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided to Digital Library by the UNT Libraries Government Documents Department.
The following text was automatically extracted from the image on this page using optical character recognition software:
Auburn University Field Test Facility
F. J. Molz
Assistant Dean for Research
108 Ramsay Hall
Auburn, AL 36830
Auburn University has conducted FTF activities at a site near Mobile,
Alabama, for the past several years. Two injection/storage/recovery cycles
have been completed. These cycles used an aquifer lying 130 to 200 ft below
the surface. Injection temperatures were maintained as close to 550C as
possible. Each of the cycles involved the injection of 57,000 m3 (15 x
106 gal) of water. Recovery of injected energy was 66% on the first cycle
and 76% on the second.
Injection pressures increased with time and necessitated backflushing of
the system to remove particulates from the vicinity of the injection well.
Sediment analysis of the injection stream indicate that as much as 6000 lb of
clay size material may have been injected. Regular periodic backflushing
served to maintain injection well capacity.
Future work at the Mobile, Alabama FTF includes upgrading the experiment
to a full and true doublet configuration, in which supply and injection wells
are completed in the same aquifer. A determination of the vertical permea-
bility is planned through anisotropy experiments. Thermal gradients within
the upper and lower confining beds will be measured. Three additional cycles
of injection/storage/recovery are planned. These cycles will be run at 550C,
900C and 1250C. These elevated temperature experiments will test the hypothe-
sis of buoyancy tilting of the heated water front. Recovery efficiencies are
expected to be lower for the 900C and 1250C experiments. If the efficiency
is significantly less, then the experiment will center around increasing the
recovery through the use of partially penetrating wells or related technology.
DATE ISSUED: SUPERSEDES PNL-3471 SECTION 3.4
Aiinimt 19Rf ISSUE DATED: New PArF 2
Here’s what’s next.
This report can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Report.
Prater, L.S. Aquifer thermal energy storage reference manual: seasonal thermal energy storage program, report, January 1, 1980; Richland, Washington. (https://digital.library.unt.edu/ark:/67531/metadc1053829/m1/52/: accessed May 20, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.