Aquifer thermal energy storage reference manual: seasonal thermal energy storage program Page: 89 of 99
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Thermochemical TES is even less developed and more complex than latent
TES. The development work in this area has been limited to paper studies and
laboratory scale tests. The only concept advanced far enough to be considered
for seasonal use in the next five years is the sulfuric acid/water heat pump
being developed by Rocket Research.
There are conflicting reports about thermochemical TES having potential
for STES applications. Engineering and full scale tests will have to be
performed before the potential of thermochemical TES can be determined.
Based upon this preliminary evaluation it appears that the most promising
non-aquifer STES concepts for more detailed evaluation are:
Sensible STES Heating(a)
. Large (more than 100,000,000 gallons) engineered insulated pond TES with
. Wet earth TES with less than 950C water
. Natural lakes and ponds, solar ponds, mines, caverns, rocks, and large
Latent STES Cooling
. Ice and compacted snow TES.
Thermochemical STES Heating and Cooling
. Sulfuric acid/water heat pump at 660 to 2000C.
Use of these concepts with conventional and high temperature heat pumps
should also be evaluated further.
These recommendations are based upon a rapid review and assessment of the
literature. Further study may reveal some promising concepts that are not
(a) Cooling with heat pumps.
DATE ISSUED: SUPERSEDES PNL-3471 SECTION 3.8
.--+ 1000 mi wn nAren. MOM DA_ C
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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/m1/89/: accessed May 20, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.