Dynamic modeling of heat pumps for ancillary services in local district heating concepts

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Abstract

This paper aims to describe the steady-state and dynamic heat pump models developed to study their abilities in ancillary services as well as the interconnection between these, electrical boilers and thermal storage with the aim to balance power and heat production for a given case.
An hourly steady-state system model was developed to understand the overall operational characteristics of the system for a given heat demand case in the area Kolt-Hasselager-Ormslev near Aarhus in Denmark. The model showed an annual average COP above 3,5 for a serial connected heat pump system.
Detailed thermal and dynamical models of the heat pump system were developed. The models show that it will be possible to use heat pumps successfully in ancillary services. The turn-up is unproblematic but the turn down of the heat pump will be limited in a nonliquid overfed system due to risk of liquid formation in the evaporator, requiring additional heating.
Original languageDanish
Title of host publicationProceedings of The 61st SIMS Conference on Simulation and Modelling SIMS 2020, Virtual Conference, September 22-24, 2020, Finland
Number of pages8
VolumeNo. 176
PublisherLinköping University Electronic Press
Publication date3 Mar 2021
Pages39-46
ISBN (Electronic) 978-91-7929-731-2
DOIs
Publication statusPublished - 3 Mar 2021
Event61st SIMS Conference on Simulation and Modelling SIMS 2020 - , Finland
Duration: 22 Sep 202024 Sep 2020

Conference

Conference61st SIMS Conference on Simulation and Modelling SIMS 2020
Country/TerritoryFinland
Period22/09/202024/09/2020
SeriesLinköping Electronic Conference Proceedings
ISSN1650-3686

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