Effet des combinaisons frigorigène-lubrifiiant sur l'efficacité énergétique d'un conditionneur d'air résidentiel bibloc convertible.
Effects of refrigerant lubricant combinations on the energy efficiency of a convertible split system residential air conditioner.
Numéro : pap. 2499
Auteurs : BENANTI T., URREGO R., HESSELL E., et al.
Résumé
Polyol ester (POE) lubricants of different viscosity ISO grades (32-80) and possessing distinctly different compatibilities (miscible vs. immiscible) were tested with R-410A, R-32, and L-41b. For each refrigerant-lubricant pair tested, the cooling coefficient of performance (COP), heating performance factor (HPF), and oil circulation ratio (OCR) were determined while operating at AHRI Standard 210/240 conditions A, B, C, H1 & H2. The results were correlated to the properties of the working fluids. Due to its higher density, yet comparable specific heat, R-32 showed increased cooling capacity compared to R-410A. However, the COPs of these refrigerants were similar because the capacity increase was offset by increased compressor power consumption. L-41b required the least compressor power, but also had the lowest cooling capacity and COP of the three refrigerants. Lubricant choice had minimal impact on cooling capacity. However, immiscible lubricants lowered cooling capacity by about 4% for R-32, condition B. A larger effect was observed in the compressor, where lubricants specifically designed for R-32 lowered discharge temperatures by 6°C and reduced power consumption by up to 10%. For R-32-lubricant pairs tested under AHRI cooling condition B, the highest and lowest COPs measured were 4.19 (optimized ISO 68 POE) and 3.72 (commercial ISO 32 POE) ? a 12% improvement by replacing the standard R-410A lubricant.
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Détails
- Titre original : Effects of refrigerant lubricant combinations on the energy efficiency of a convertible split system residential air conditioner.
- Identifiant de la fiche : 30013428
- Langues : Anglais
- Source : 2014 Purdue Conferences. 15th International Refrigeration and Air-Conditioning Conference at Purdue.
- Date d'édition : 14/07/2014
Liens
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Indexation
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Refrigerant and lubricant mass distribution in ...
- Auteurs : WUJEK S. S., BOWERS C. D., POWELL J. W., et al.
- Date : 14/07/2014
- Langues : Anglais
- Source : 2014 Purdue Conferences. 15th International Refrigeration and Air-Conditioning Conference at Purdue.
- Formats : PDF
Voir la fiche
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Lubricants optimized for use with R32 and relat...
- Auteurs : HESSELL E., URREGO R., BENANTI T.
- Date : 14/07/2014
- Langues : Anglais
- Source : 2014 Purdue Conferences. 15th International Refrigeration and Air-Conditioning Conference at Purdue.
- Formats : PDF
Voir la fiche
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Development of refrigeration oil for use with R32.
- Auteurs : OKIDO T., TAKIGAWA K., TAKAHASHI H.
- Date : 14/07/2014
- Langues : Anglais
- Source : 2014 Purdue Conferences. 15th International Refrigeration and Air-Conditioning Conference at Purdue.
- Formats : PDF
Voir la fiche
-
Development of refrigeration oil for use with R32.
- Auteurs : OKIDO T., TAKIGAWA K., SAITO M.
- Date : 16/07/2012
- Langues : Anglais
- Source : 2012 Purdue Conferences. 14th International Refrigeration and Air-Conditioning Conference at Purdue.
- Formats : PDF
Voir la fiche
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Miscibility comparison for three refrigerant mi...
- Auteurs : KANG H. M., PATE M. B.
- Date : 1999
- Langues : Anglais
- Source : ASHRAE Transactions. 1999 Annual Meeting, Seattle, Washington + CD-ROM.
Voir la fiche