Comparison of R744 and R134A heat transfer coefficients during flow boiling in a horizontal circular smooth tube

Renewable Energy and Power Quality Journal

Volumn 1, Issue 7, 2009, Pages 577-581

  Mastrullo, R ^a   Mauro, A W ^a   Rosato, A ^a   Vanoli, G P ^b  

^a UNIVERSITY OF NAPLES FEDERICO II   (Italy)

^b UNIVERSITY OF SANNIO   (Italy)

Author keywords

Evaporator; Flow boiling; Heat transfer coefficient; R134a; R744; Refrigeration

Indexed keywords

EID: 85073336277     PISSN: None     EISSN: 2172038X     Source Type: Journal    
DOI: 10.24084/repqj07.436     Document Type: Article

References (7)

1. EC Regulation 2037/2000, 2000.
2. UNEP, Report of the refrigeration, air-conditioning and heat pumps technical options committee, 2006.
3. Cavallini A., Zilio C., Carbon dioxide as a natural refrigerant, 5th International Congress on Sustainable Energy Technologies, Vicenza, Italy, 2006.
4. De’ Rossi F., Mauro A. W., Rosato A., Confronto delle perdite di carico dell’R744 e dell’R134a durante l’evaporazione in convezione forzata, Proceedings of 63° Congresso Nazionale ATI, Palermo, 2008.
5. Moffat R. J., Describing uncertainties in experimental results, Experimental Thermal Fluid Sciences 1 (1988) 3-17.
6. Lemmon E. W., Mc Linden M.O., M.L. Huber, NIST Standard Reference Database 23, Version 7.0, Physical and Chemical Properties.
7. 2 evaporation inside tubes: Part I-A two-phase flow pattern map and a flow pattern based phenomenological model for two-phase flow frictional pressure drops, International Journal of Heat and Mass Transfer 51 (2008) 111-124.