| Titre : | Thermodynamic simulation of alternative absorption heat pumping processes using natural working fluids (2012) |
| Titre original : | Simulation thermodynamique des procédés de remplacement à pompe à chaleur à absorption utilisant des frigorigènes naturels |
| Auteurs : | O. Kotenko, Auteur ; H. Moser, Auteur ; R. Rieberer, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | International journal of refrigeration (Vol. 35 N° 3, Mai 2012) |
| Article en page(s) : | pp. 594–604 |
| Note générale : | Génie mécanique |
| Langues : | Anglais |
| Tags : | Absorption Heat pump transformer Process analysis Refrigeration Simulation |
| Résumé : |
Three groups of alternative absorption heat pumping processes (AHP) with different natural working fluids are being analyzed in this paper:
Image Absorption heat transformer (AHT) process using partially miscible working mixtures; Image AHP-processes using a condensable auxiliary fluid (Einstein–Szilard cycle, Rojey cycle); Image NH3/H2O-AHP-process using strong bases as additives (e.g. NaOH). The thermodynamic simulations have shown that a NH3/H2O absorption cycle using a strong base as additive seems to be promising for applications using low-grade heat sources and the Rojey cycle offers higher COPs than a conventional NH3/H2O-AHP at high generator temperatures and low temperature lifts. The investigated AHT-process and the Einstein–Szilard process seem presently not to be competitive compared to conventional technologies. At present the influence of strong bases on a conventional NH3/H2O-AHP is being investigated at the Institute of Thermal Engineering, Graz University of Technology. |
| ISSN : | 0140-7007 |
| En ligne : | http://www.sciencedirect.com/science/article/pii/S0140700711002490 |
