Eismann, Ralph
Lade...
E-Mail-Adresse
Geburtsdatum
Projekt
Organisationseinheiten
Berufsbeschreibung
Nachname
Eismann
Vorname
Ralph
Name
Eismann, Ralph
2 Ergebnisse
Suchergebnisse
Gerade angezeigt 1 - 2 von 2
- PublikationCoolShift – Cooling of buildings by chiller-assisted nocturnal radiation and convection(IOP Publishing, 04.09.2019) Koch, Manuel; Dott, Ralf; Eismann, Ralph; Scartezzini, Jean-Louis [in: CISBAT]A novel approach for cooling an office building is numerically evaluated. PVT collectors are used for nocturnal radiative and convective cooling. A TABS ceiling serves as thermal storage. If the free cooling power of the PVT collectors is too low, it is boosted by a chiller raising the collector temperature. While the energy efficiency improves compared to a conventional daytime chiller cooling system, the room temperature cannot always be kept in the desired band. Furthermore, the PVT collectors stay cooler than comparable PV modules during the day, increasing the electricity generation.04 - Beitrag Sammelband oder Konferenzschrift
- PublikationPipe Network Analysis for Solar Thermal Plants(ISES Conference Proceedings, 10.09.2018) Eismann, Ralph; Haeberle, Andreas [in: EuroSun, 12th International Conference on Solar Energy for Buildings and Industry]Efficiency, cost-effectiveness and operational safety of solar plants must be based on the knowledge of pressure loss as well as flow distribution and temperature distribution of branched collector arrays. Therefore, pipe network analysis is an essential step during the dimensioning process. This article presents an explicit, fast converging numerical scheme especially suited for collector fields. The effect of pipe dimensions and pipe routing on flow, temperature and pressure-distribution and collector field efficiency is demonstrated by application of a dedicated software tool, which is provided as an open source code.04 - Beitrag Sammelband oder Konferenzschrift