Seasonal Performance of a Combined Solar, Heat Pump and Latent Heat Storage System
Autor:innen
Autor:in (Körperschaft)
Publikationsdatum
2013
Typ der Arbeit
Studiengang
Typ
04B - Beitrag Konferenzschrift
Herausgeber:innen
Scartezzini, Jean-Louis
Herausgeber:in (Körperschaft)
Betreuer:in
Übergeordnetes Werk
Proceedings of CISBAT 2013
Themenheft
DOI der Originalpublikation
Reihe / Serie
Reihennummer
Jahrgang / Band
2
Ausgabe / Nummer
Seiten / Dauer
1005-1010
Patentnummer
Verlag / Herausgebende Institution
Ecole Polytechnique Fédérale de Lausanne (EPFL)
Verlagsort / Veranstaltungsort
Lausanne
Auflage
Version
Programmiersprache
Abtretungsempfänger:in
Praxispartner:in/Auftraggeber:in
Zusammenfassung
This paper investigates the seasonal performance of a combined solar, heat pump and latent heat storage system for dwellings. This combination could provide a viable alternative to common brine-water heat pump systems with a borehole heat exchanger (BHX). Since the latent heat storage, or ice storage, is filled with pure water, it can also be used in (but is not limited to) places where a BHX is prohibited, e.g. water protection areas. The aim of this work is to find and evaluate given system configurations for three different annual heat demands that reach seasonal performance factors (SPF) comparable to those of BHX heat pump systems, i.e. SPF ~ 4.0.
A simulation study using MATLAB®/SIMULINK® and the CARNOT Blockset is conducted. Technologies considered in the simulation study are a brine-water heat pump, unglazed solar collectors as source for the heat pump and a buried ice storage that serves as alternative source for the heat pump and is regenerated by the collectors. Unglazed collectors use solar irradiation and ambient heat (via convective heat exchange) for heat generation. Additionally, thermal coupling of the ice storage to the surrounding soil which also contributes to the regeneration of the system is considered. The simulation models of this system have been validated with laboratory and field test data. The heat generated by the heat pump is used for space heating and domestic hot water preparation of single family houses with different heat loads which have been defined in the framework of IEA SHC Task 44 / HPP Annex 38 "Solar and heat pump systems". To obtain the desired SPF for each building type the power output of the heat pump with the corresponding size of the collector field is varied.
For each building a configuration is found that yields a SPF ~ 4.0. A high SPF can only be reached as long as no backup heating is needed, which means, that the ice storage should never be completely discharged, i.e. completely frozen. This requires significant contributions from the solar collector, especially during the heating period.
Schlagwörter
Wärmepumpe, Latentwärme, Eisspeicher
Fachgebiet (DDC)
620 - Ingenieurwissenschaften und Maschinenbau
624 - Ingenieurbau und Umwelttechnik
624 - Ingenieurbau und Umwelttechnik
Veranstaltung
Startdatum der Ausstellung
Enddatum der Ausstellung
Startdatum der Konferenz
04.09.2013
Enddatum der Konferenz
06.09.2013
Datum der letzten Prüfung
ISBN
978-2-8399-1280-8
978-2-8399-1282-2
978-2-8399-1282-2
ISSN
Sprache
Englisch
Während FHNW Zugehörigkeit erstellt
Ja
Zukunftsfelder FHNW
Publikationsstatus
Veröffentlicht
Begutachtung
Peer-Review des Abstracts
Open Access-Status
Lizenz
Zitation
WINTELER, Christian, Ralf DOTT und Thomas AFJEI, 2013. Seasonal Performance of a Combined Solar, Heat Pump and Latent Heat Storage System. In: Jean-Louis SCARTEZZINI (Hrsg.), Proceedings of CISBAT 2013. Lausanne: Ecole Polytechnique Fédérale de Lausanne (EPFL). 2013. S. 1005–1010. ISBN 978-2-8399-1280-8. Verfügbar unter: https://doi.org/10.26041/fhnw-106