This study represents a thermodynamic evaluation and carbon footprint analysis of the application of hydrogen‐based energy storage systems in residential buildings. In the system model, buildings are equipped with photovoltaic (PV) modules and a hydrogen storage system to conserve excess PV electricity from times with high solar irradiation to times with low solar irradiation. Short‐term storages enable a degree of self‐sufficiency of approximately 60 % for a single‐family house (SFH) [multifamily house (MFH): 38 %]. Emissions can be reduced by 40 % (SFH) (MFH: 30 %) compared to households without PV modules. These results are almost independent of the applied storage technology. For seasonal storage, the degree of self‐sufficiency ranges between 57 and 83 % (SFH). The emission reductions highly depend on the storage technology, as emissions caused by manufacturing the storage dominate the emission balance. Compressed gas or liquid organic hydrogen carriers are the best options, enabling emission reductions of 40 %.
In Anbetracht der zukünftig starken Zunahme an fluktuierender Stromerzeugung stellt sich die Frage, wie unser Stromsystem auf die dadurch entstehenden Herausforderungen vorbereitet werden kann. In diesem Umstellungsprozess muss auch geklärt werden, wie bereits vorhandene Ressourcen zur Netzstabilisierung genutzt werden können. Im Forschungsprojekt Optibiosy wurden sowohl die technischen, als auch die wirtschaftlichen Potenziale von Biogasanlagen untersucht.
Am Kompetenzzentrum für Kraft-Wärme-Kopplung der Ostbayerischen Technischen Hochschule Amberg-Weiden wurden Berechnungen durchgeführt, die eine Einordung erdgasbetriebener Blockheizkraftwerke anhand ihrer Treibhausgas-Bilanz hinsichtlich der Emissionsminderung im Energiesektor ermöglichen sollen. Dafür wurden die Emissionsfaktoren aus der Energieerzeugung mit Erdgas-Blockheizkraftwerken prognostizierten Strom- und Wärmemixen für das Jahr 2030 gegenübergestellt.
Das bayerische Wirtschaftsministerium setzt auf den Ausbau der Kraft-Wärme-Kopplung (KWK) und stellt Vorzeigeprojekte aus den bayerischen Regierungsbezirken in der Roadshow „KWK vor Ort“ vor. Ein Beispiel ist eine Metzgerei in Kemnath in der Oberpfalz.
Process cooling and air conditioning are becoming increasingly important in the industry. Refrigeration is still mostly accomplished with compression chillers, although alternative technologies are available on the market that can be more efficient for specific applications. Within the scope of the project "EffiCool" a technology toolbox is currently being developed, which is intended to assist industrials users in selecting energy efficient and eco-friendly cooling solutions. In order to assess different refrigeration options a consistent methodology was developed. The refrigeration technologies are assessed regarding their efficiency, CO 2 -emissions and primary energy consumption. For CCHP systems an exergetic allocation method was implemented. Two scenarios with A) a compression chiller and B) an absorption chiller coupled to a natural gas CHP system were calculated exemplarily, showing a greater overall efficiency for the CCHP system, although the individual COP of the chiller is considerably lower.
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