Inhaltsverzeichnis
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COP5+ - Further development of a heat- and cooling system with seasonal heat storage at the example of Central Europe´s biggest geothermal depth drilling field
The aim is to increase the overall energy efficiency of Plus-Energy-Houses by making the heat excess of summer available for use in winter. This is carried out by improvements of the technology seasonal heat storage to an intelligent overall system. The biggest geothermal depth drilling field in Central Europe will be established.
Titel und Synopse
COP5+ - Weiterentwicklung eines Wärme- und Kühlsystems mit saisonaler Wärmespeicherung am Beispiel des größten Erdwärmetiefensondenfeldes Mitteleuropas
Ziel ist, den Energieüberschuss des Plus-Gebäudes im Sommer zu Nutzung für den Winter bereitzustellen. Dies erfolgt durch Verwendung eines hoch effizienten Systems zur saisonalen Wärmeenergiespeicherung. Realisiert wird dies durch das größte Erdwärmetiefensondenfeld Mitteleuropas. Umfangreiche Messreihen werden ausgewertet und bilden die Grundlage für die Weiterentwicklung.
Project description / tasks
Status
ongoing
Summary
Starting point / motivation
With the construction of a research and development center of Fronius International GmbH in Thalheim near Wels, the biggest geothermal depth drilling field in Central Europe will be established. From this a series of measurements is taken over 36 months, which will then be evaluated and analysed. The findings of this project provide a basis for further development of such systems.
Contents and goals
The aim is to increase the overall energy efficiency of Plus-Energy-Buildings by making the heat excess of summer available for use in winter. This is carried out by improvements of the technology seasonal heat storage to an intelligent overall system. Because of the storage of the summerly overrun of heat energy, the temperature of the soil surrounding the depth drillings increases. By optimising the charging and discharging processes the losses are minimised. By raising the temperature of the heat source in combination with an optimised building service management system, the COP (Coefficient of Performance) of the heat pump during the heating period can be increased. A possible COP over 5 is expected. Furthermore, such a system offers the energetic ideal possibility of cooling in summer. This causes a remarkable decrease of power requirement which in return means a reduction of primary energy requirement.
Methods of treatment
For the measurement of the design information an extensive building master control system is installed. With the installed measuring technique relevant temperatures, flow rates, energy consumption, power production etc. are measured. Thus, all relevant energy flows to and from the probe field as well as within the range of the building can be noted and supervised. Furthermore, three of the depth probes are equipped with measuring technique, which permits a representative overview of the condition of the probe field. The data measured during this period, are afterwards evaluated, analysed and verified by a simulation.
Expected results / conclusions
The conclusions will help to successfully realise more of this type of storage systems. By using such equipments, the energy requirement of heating and cooling systems can be lowered and the overall energy efficiency of Plus-Energy-Buildings can be increased.
Project partners
Project management
Fronius International GmbH
Ing. Josef Feichtinger
Project or cooperation partner
- ENERTEC Naftz & Partner OG
- Schöberl & Pöll OEG
- TU Wien - Zentrum für Geologie und Bauphysik
Contact address
Fronius International GmbH
Ing. Josef Feichtinger
Günter Fronius Straße 1
4600 Thalheim
Tel.: +43 (7242) 241-2330
Fax: +43 (7242) 241-952330
E-Mail: feichtinger.josef@fronius.com
