Work

Integration of a latent heat storage in the refrigeration cycle of an air source heat pump for energy-efficient heating, cooling and DHW operations

Year: 2024

Type: conference-paper

Abstract: A key solution to the buildings sector's fossil fuel challenges lies in renewables and efficient technologies. This study proposes a novel concept aimed at enhancing the coefficient of performance (COP) of air-source heat pumps (ASHPs) for both heating and domestic hot water (DHW) generation. Herein, the integration of a refrigerant-PCM-water heat exchanger (RPW-HEX) into the refrigeration circuit is crucial. The RPW-HEX serves a dual purpose, acting as a desuperheater/storage for DHW during winter and as a condenser/storage during summer. Comprehensive simulations are carried out to assess the performance of the entire system. The findings reveal promising results maintaining thermal comfort for occupants with reduced ASHP operation during DHW demand.

Source: Proceedings of BauSIM

DOI: 10.26868/29761662.2024.25

Authors: Abdulrahman Dahash, Georg Klein, Michael Lauermann, Raimund Zitzenbacher, Stephan Preisinger, Bernd Windholz

Institutions: AIT Austrian Institute of Technology GmbH, DMEX Centre for X-ray Imaging

Language: English

Topic: Refrigeration and Air Conditioning Technologies

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Climate action

Open Access status: bronze

Funder: Österreichische Forschungsförderungsgesellschaft