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@INPROCEEDINGS{Althaus:1020540,
author = {Althaus, Philipp and Hering, Dominik and Johnen, Sascha and
Küpper, Christian and Lieberenz, Paul and Mork, Maximilian
and Pick, Jana and Riebesel, Lea and Redder, Florian and
Schmülgen, Marek and Stock, Jan and Ubachukwu, Eziama and
Westphal, Lidia and Xhonneux, André and Müller, Dirk},
title = {{H}eat supply for office buildings: {A} research journey
through different supply levels at the {C}ampus of
{F}orschungszentrum {J}ülich},
reportid = {FZJ-2024-00253},
year = {2023},
abstract = {With regard to climate change, the reduction of greenhouse
gas emissions, e.g. by introducing and extending the use of
renewable energy sources, plays a pivotal role. As a part of
the “Energiewende”, the share of renewable energy
sources in electricity generation increased rapidly so far,
however other sectors, such as the heating sector, are
lagging behind. In order to achieve the defined greenhouse
gas emission reduction targets, corresponding measures have
to be taken in all energy sectors. This especially holds
true in the heating sector, which accounts for a high share
in carbon dioxide emissions. In the heating sector, key
challenges include the integration of renewable energies and
waste heat in the heat supply as well as the increase of the
efficiency in the building sector. To reduce heating demands
while still ensuring thermal comfort for the occupants,
different measures can be taken, ranging from design to
refurbishment and automation. Due to the low rate of new
construction and renovation in Germany and the European
Union in general, the building stock will dominate the
overall energy demand of buildings for the coming decades.
Therefore, solutions which can be easily retrofitted in
existing buildings are essential. Within the “Living Lab
Energy Campus” (LLEC) initiative at Forschungszentrum
Jülich (FZJ), these challenges are addressed by developing,
demonstrating and evaluating various measures ranging from
district level over building level to room level by using
the real infrastructure at the campus. On the supply side at
district level, the integration of waste heat of a
water-cooled high performance computer from the Jülich
Supercomputing Center (JSC) into a low temperature district
heating network (LTDH) for the supply of heat to surrounding
buildings is studied. Since the waste heat is provided at
moderate temperature, heat pumps are installed in the
connected buildings to raise the temperature of the supplied
heat to the required temperature level of the building's
heating system. Cloud-based model predictive controllers
have been developed for an overall optimal operation of the
LTDH, heat pumps, heat storages and heating distribution
systems within the buildings. The developed control methods
have been tested and evaluated using a digital twin. After
start of operation of the LTDH, a scientific evaluation of
different control methods as well as of the ICT setup can be
conducted. Besides this, the automation system of a heating
substation with heat exchanger fed by a traditional district
heating network is connected to the ICTplatform and adapted
for scientific monitoring and operation. To raise energy
efficiency at building level, innovative cloud-based
controllers as well as monitoring methods to raise user
awarenesswith respect to energy demand are developed. For
the evaluation of these methods, several buildings including
those connected to the LTDH have been equipped on room level
with radio-based sensors, measuring indoor air quality and
energy demand related parameters, and actuators, allowing
the local and remote control of heating systems, lighting
systems and venetian blinds. Occupantscan view sensor data
of their room via the web-based graphical user interface
“JuControl” and provide setpoints for e.g. temperature
control. The implemented setup allows the use as a testbed
for a variety of different automation algorithms. The
experiments having already been conducted show the
opportunity to increase the energy efficiency and reveal
interesting insights by data analysis.In addition to run and
evaluate single measures separately, the developed ICT
infrastructure also enables the combined operation of
several measures in parallel across different levels and
sectors, e.g. a grid-supporting heat pump operation.
Finally, a first evaluation of the wide range of measures
including the different characteristics regarding costs,
implementation efforts and efficiency gains is shown.The
general concept of each measure as well as the developed
tools, methods and model libraries for optimal design and
operation can be transferred to similar use cases. For wider
application, also a release of the developed software
elements is planned.},
month = {Jun},
date = {2024-06-12},
organization = {Helmholtz Energy Conference 2023,
Koblenz (Germany), 12 Jun 2024 - 13 Jun
2024},
subtyp = {After Call},
cin = {IEK-10},
cid = {I:(DE-Juel1)IEK-10-20170217},
pnm = {1121 - Digitalization and Systems Technology for
Flexibility Solutions (POF4-112) / 1122 - Design, Operation
and Digitalization of the Future Energy Grids (POF4-112) /
1123 - Smart Areas and Research Platforms (POF4-112) / EnOB:
LLEC: Living Lab Energy Campus (03ET1551A) / Forschungs- und
Demonstrations-Projekt 'LLEC::JuPilot' (03EK3047) / EG2050:
LLEC-Verwaltungsbau: Klimaneutraler Verwaltungsbau als
aktiver Teil des Living Lab Energy Campus (LLEC)
(03EGB0010A) / LLEC - Living Lab Energy Campus
(LLEC-2018-2023)},
pid = {G:(DE-HGF)POF4-1121 / G:(DE-HGF)POF4-1122 /
G:(DE-HGF)POF4-1123 / G:(BMWi)03ET1551A / G:(BMBF)03EK3047 /
G:(BMWi)03EGB0010A / G:(DE-HGF)LLEC-2018-2023},
typ = {PUB:(DE-HGF)6},
doi = {10.34734/FZJ-2024-00253},
url = {https://juser.fz-juelich.de/record/1020540},
}
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