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

Abdulrahman Dahash; Georg Klein; Michael Lauermann; R.  Zitzenbacher; S. Preisinger; Bernd Windholz

doi:10.26868/29761662.2024.25

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

Abdulrahman Dahash (Author and Speaker)
, Georg Klein
, Michael Lauermann
, R. Zitzenbacher
, S. Preisinger
, Bernd Windholz

Sustainable Thermal Energy Systems

OCHSNER Wärmepumpen GmbH

Research output: Chapter in Book or Conference Proceedings › Conference Proceedings with Oral Presentation › peer-review

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.

Original language	English
Title of host publication	BauSIM Conference Proceedings by IBPSA-Austria and Germany
Editors	Thomas Bednar
Place of Publication	Vienna, Austria
Pages	192 - 200
Volume	10
DOIs	https://doi.org/10.26868/29761662.2024.25
Publication status	Published - 25 Nov 2024

Research Field

Efficient Buildings and HVAC Technologies

Keywords

Split air-source heat pump
latent heat storage
phase change material
residential heating and cooling
domestic hot water generation
energy savings

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.26868/29761662.2024.25

Integration of a latent heat storage in the refrigeration cycle of an air source heat pump for energy-efficient heating, cooling and DHW operations
Dahash, A. (Author and Speaker), Klein, G. (Author), Lauermann, M. (Author), Zitzenbacher, R. (Author), Preisinger, S. (Author) & Windholz, B. (Author)
25 Sept 2024
Activity: Talk or presentation / Lecture › Invited talk at a scientific conference or institution

Cite this

Dahash, A., Klein, G., Lauermann, M., Zitzenbacher, R., Preisinger, S., & Windholz, B. (2024). Integration of a latent heat storage in the refrigeration cycle of an air source heat pump for energy-efficient heating, cooling and DHW operations. In T. Bednar (Ed.), BauSIM Conference Proceedings by IBPSA-Austria and Germany (Vol. 10, pp. 192 - 200). https://doi.org/10.26868/29761662.2024.25

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

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.",

keywords = "Split air-source heat pump, latent heat storage, phase change material, residential heating and cooling, domestic hot water generation, energy savings",

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Dahash, A , Klein, G , Lauermann, M, Zitzenbacher, R, Preisinger, S & Windholz, B 2024, Integration of a latent heat storage in the refrigeration cycle of an air source heat pump for energy-efficient heating, cooling and DHW operations. in T Bednar (ed.), BauSIM Conference Proceedings by IBPSA-Austria and Germany. vol. 10, Vienna, Austria, pp. 192 - 200. https://doi.org/10.26868/29761662.2024.25

Integration of a latent heat storage in the refrigeration cycle of an air source heat pump for energy-efficient heating, cooling and DHW operations. / Dahash, Abdulrahman (Author and Speaker); Klein, Georg ; Lauermann, Michael et al.
BauSIM Conference Proceedings by IBPSA-Austria and Germany. ed. / Thomas Bednar. Vol. 10 Vienna, Austria, 2024. p. 192 - 200.

Research output: Chapter in Book or Conference Proceedings › Conference Proceedings with Oral Presentation › peer-review

TY - GEN

T1 - Integration of a latent heat storage in the refrigeration cycle of an air source heat pump for energy-efficient heating, cooling and DHW operations

AU - Klein, Georg

AU - Lauermann, Michael

AU - Zitzenbacher, R.

AU - Preisinger, S.

AU - Windholz, Bernd

A2 - Dahash, Abdulrahman

A2 - Bednar, Thomas

PY - 2024/11/25

Y1 - 2024/11/25

N2 - 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.

AB - 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.

KW - Split air-source heat pump

KW - latent heat storage

KW - phase change material

KW - residential heating and cooling

KW - domestic hot water generation

KW - energy savings

U2 - 10.26868/29761662.2024.25

DO - 10.26868/29761662.2024.25

M3 - Conference Proceedings with Oral Presentation

SN - 978-3-200-10068-8

VL - 10

SP - 192

EP - 200

BT - BauSIM Conference Proceedings by IBPSA-Austria and Germany

CY - Vienna, Austria

ER -

Dahash A , Klein G , Lauermann M, Zitzenbacher R, Preisinger S, Windholz B. Integration of a latent heat storage in the refrigeration cycle of an air source heat pump for energy-efficient heating, cooling and DHW operations. In Bednar T, editor, BauSIM Conference Proceedings by IBPSA-Austria and Germany. Vol. 10. Vienna, Austria. 2024. p. 192 - 200 doi: 10.26868/29761662.2024.25

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

Abstract

Research Field

Keywords

UN SDGs

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

Cite this