![](https://iifiir-uploads.s3.fr-par.scw.cloud/periodic/492/image/small-f8051aef4e1d31c9f3e5d83ac19adca2.png)
IIR document
Performance analysis of a novel air source ammonia/water cascade heat pump for heating buildings in subarctic climate.
Author(s) : HOSSEINNIA S. M., AMIRI L., PONCET S.
Type of article: IJR article
Summary
Performance of available air-source heat pumps (ASHP) for buildings is extremely influenced by the outdoor air temperature (OAT). When OAT falls below –20 °C, especially in subarctic climate, most commercially available ASHPs lose their defined functionality. To address this issue, a novel cascade heat pump (CHP) is proposed that utilizes two natural (with zero global warming index) refrigerants: ammonia, aka R717, as the low stage (LS) refrigerant, and water, aka R718, as the high stage (HS) working fluid. The proposed system is equipped with two rotary vane compressors for LS and HS. To desuperheat the compressor discharge temperatures and increase the HS heating capacity, liquid refrigerant is injected into the chamber of both LS and HS compressors. The wet compression is thermodynamically modeled and validated against experimental data available in the literature. Optimum design parameters such as the maximum allowable temperatures during compression and the minimum vapor quality after injection are obtained where the COP is maximized. Total exergy destruction, number/location of injectors and the injected amounts are also investigated. The proposed CHP can deliver 6.35 kW heating load at 50 °C with a COP of 1.985 when OAT is –40 °C. From a broader perspective, the proposed CHP not only proves its efficacy in extremely cold subarctic climates but also emerges as a pivotal player in addressing the global warming issue. This is accomplished through a dual approach to decarbonization—firstly, by electrifying heating processes and secondly, by substituting phased-out refrigerants with environmentally friendly natural alternatives.
Available documents
Format PDF
Pages: 57-74
Available
Public price
20 €
Member price*
Free
* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).
Details
- Original title: Performance analysis of a novel air source ammonia/water cascade heat pump for heating buildings in subarctic climate.
- Record ID : 30032403
- Languages: English
- Subject: Technology
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 164
- Publication date: 2024/08
- DOI: http://dx.doi.org/10.1016/j.ijrefrig.2024.04.026
Links
See other articles in this issue (20)
See the source
Indexing
-
Themes:
Ammonia;
Water;
Residential heat-pumps - Keywords: R717; R718; Ammonia; Water; Heat pump; Heating; Cold climate; Cascade system; Air-source system; Natural refrigerant; Rotary compressor; Modelling
-
Progress in ground-source heat pumps using natu...
- Author(s) : WU W., SKYE H. M.
- Date : 2018/08
- Languages : English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 92
- Formats : PDF
View record
-
GL - Conférence IIF-Gustav Lorentzen sur les fr...
- Date : N/A
- Languages :
View record
-
Experimental study of a control strategy for a ...
- Author(s) : QU M., FAN Y., LI T., et al.
- Date : 2017/01/05
- Languages : English
- Source: Applied Thermal Engineering - vol. 110
View record
-
Feasibility study of various conventional and u...
- Author(s) : YOUNG J., SUBIANTORO A.
- Date : 2020/12/07
- Languages : English
- Source: 14th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2020). Proceedings. Kyoto, Japon, December 7-9th 2020.
- Formats : PDF
View record
-
Scaling parameters between ammonia and water.
- Author(s) : SPINDLER K.
- Date : 2019/08/24
- Languages : English
- Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
- Formats : PDF
View record