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@ARTICLE{Graf:889925,
author = {Graf, Stefan and Redder, Florian and Bau, Uwe and de Lange,
Martijn and Kapteijn, Freek and Bardow, André},
title = {{T}oward {O}ptimal {M}etal–{O}rganic {F}rameworks for
{A}dsorption {C}hillers: {I}nsights from the {S}cale‐{U}p
of {MIL}‐101({C}r) and {NH} 2 ‐{MIL}‐125},
journal = {Energy technology},
volume = {8},
number = {1},
issn = {2194-4296},
address = {Weinheim [u.a.]},
publisher = {Wiley-VCH},
reportid = {FZJ-2021-00533},
pages = {1900617 -},
year = {2020},
abstract = {The metal–organic frameworks (MOFs) MIL‐101(Cr) and
NH2‐MIL‐125 offer high adsorption capacities and have
therefore been suggested for sustainable energy conversion
in adsorption chillers. Herein, these MOFs are benchmarked
to commercial Siogel. The evaluation method combines
small‐scale experiments with dynamic modeling of
full‐scale adsorption chillers. For the common temperature
set 10/30/80 °C, it is found that MIL‐101(Cr) has the
highest adsorption capacity, but considerably lower
efficiency $(−19\%)$ and power density $(−66\%)$ than
Siogel. NH2‐MIL‐125 increases efficiency by $18\%$
compared with Siogel, but reduces the practically important
power density by $28\%.$ From the results, guidelines for
MOF development are derived: High efficiencies are achieved
by matching the shape of the isotherms to the specific
operating temperatures. By only adapting shape, efficiencies
are 1.5 times higher. Also, higher power density requires
matching the shape of the isotherms to create high driving
forces for heat and mass transfer. Second, if MOFs’ heat
and mass transfer coefficients could reach the level of
Siogel, their maximum power density would double. Thus,
development of MOFs should go beyond adsorption capacity,
and tune the structure to the application requirements. As a
result, MOFs could to serve as optimal adsorbents for
sustainable energy conversion.},
cin = {IEK-10},
ddc = {620},
cid = {I:(DE-Juel1)IEK-10-20170217},
pnm = {899 - ohne Topic (POF3-899)},
pid = {G:(DE-HGF)POF3-899},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000491127100001},
doi = {10.1002/ente.201900617},
url = {https://juser.fz-juelich.de/record/889925},
}