Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Case study of a solar cooling system with a small NH 3 / H 2 O absorption chiller
The example in chapter 3 shows a 100% renewable energy based system in an office building in Austria. Being in a central european climate, the main demand is for heating. The building load profile and its SHC system design lead to a high solar fraction of solar cooling via chilled ceilings. No conventional back up chiller or cold storage is installed, if needed the renewable heat sources serve as hot backup to run the chiller. The chiller is controlled with a continuously modulating concept, where the chiller capacity is modulated to match the building load.
The technical performance of the monitored but also the simulation study shows for a well sized system with the continuously modulating control strategy, an electrical seasonal performance factor well above 10 should be achievable.
The indicative economic analysis includes a sensitivity analysis on increasing heating and domestic hot water demand at constant cooling season demand. Although the economics of the solar thermal system is worse than the reference system in all cases, the difference between the two systems gets smaller with increasing demands. Finally the difference is small enough to give a positive perspective of the capital cost dominated SHC economics.
Case study of a solar cooling system with a small NH 3 / H 2 O absorption chiller
The example in chapter 3 shows a 100% renewable energy based system in an office building in Austria. Being in a central european climate, the main demand is for heating. The building load profile and its SHC system design lead to a high solar fraction of solar cooling via chilled ceilings. No conventional back up chiller or cold storage is installed, if needed the renewable heat sources serve as hot backup to run the chiller. The chiller is controlled with a continuously modulating concept, where the chiller capacity is modulated to match the building load.
The technical performance of the monitored but also the simulation study shows for a well sized system with the continuously modulating control strategy, an electrical seasonal performance factor well above 10 should be achievable.
The indicative economic analysis includes a sensitivity analysis on increasing heating and domestic hot water demand at constant cooling season demand. Although the economics of the solar thermal system is worse than the reference system in all cases, the difference between the two systems gets smaller with increasing demands. Finally the difference is small enough to give a positive perspective of the capital cost dominated SHC economics.
Case study of a solar cooling system with a small NH 3 / H 2 O absorption chiller
Mugnier, Daniel (Autor:in) / Neyer, Daniel (Autor:in) / White, Stephen D. (Autor:in) / Neyer, Jacqueline (Autor:in) / Thür, Alexander (Autor:in) / Streicher, Wolfgang (Autor:in) / Nocke, Bettina (Autor:in)
01.09.2017
48 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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