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Document IIF

Étude de la performance d’une pompe à chaleur au R744 à éjecteurs multiples.

Performance investigation of a multi-ejector R744 heat pump.

Numéro : pap. 1287

Auteurs : SIMARPREET S., AMSHITH R., PRAKASH M. P., et al.

Résumé

Communication présentée sous forme de poster lors de la conférence. Carbon dioxide (CO2, R744) is a natural refrigerant which is emerging as a potential substitute for Hydrofluorocarbons (HFCs) and FCs nowadays because of its eco-friendliness, non-flammability, high volumetric capacity and good heat transfer properties. The demand for domestic water heating is growing rapidly in India for applications like dairies, hotels, hospitals etc. Trans-critical R744 system with heat recovery seems to be appropriate for such application. The drawbacks of lower efficiency and the demand mismatch can be improved by incorporating ejectors; while, the mismatch is addressed by suitable control and standby gas cooler respectively. The paper presents an experimental evaluation of an R744 multi-ejector based system with heat recovery for hot water production. The effect of high ambient temperature (36-46°C) on the overall performance of the system and heat recovery is also evaluated. It is observed that the COP of the multi-ejector R744 system with heat recovery for domestic production at high ambient context is high. Also, the opportunity of maximum heat available for recovery is encouraging to accept this technology for high ambient context.

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Détails

Titre original : Performance investigation of a multi-ejector R744 heat pump.
Identifiant de la fiche : 30023764
Langues : Anglais
Source : 13^th IIR Gustav Lorentzen Conference on Natural Refrigerants (GL2018). Proceedings. Valencia, Spain, June 18-20th 2018.
Date d'édition : 18/06/2018
DOI : http://dx.doi.org/10.18462/iir.gl.2018.1287

Liens

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Indexation

Thèmes : Techniques des pompes à chaleur;
CO2
Mots-clés : Eau chaude; Système à éjecteur; Récuperation de chaleur; R744; Performance; Inde; Experimentation; COP; Eau sanitaire; CO2