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Analyse expérimentale comparative de différentes stratégies de modulation de la puissance du compresseur dans un refroidisseur au R410A, axée sur les performances saisonnières. 

Comparative experimental analysis of different compressor capacity modulation strategies in R410A chiller with focus on seasonal performance.

Numéro : 1198

Auteurs : INAMPUDI S. T., BOTTICELLA F., ELBEL S.

Résumé

Rising cooling needs for the residential and commercial air conditioning sectors and the demand for higher SEER require HVAC&R to handle cooling loads below the design condition. Though several studies exist focusing on a particular capacity modulation strategy, there is no extensive study that explores all these available modulation strategies in the same experimental facility. This paper is the next step to a previous paper that compared two capacity controls for scroll compressors (single speed and two-stage compressors). The current paper provides insights on additional capacity modulation strategies, including tandem combinations of two single-speed compressors, a single-speed and two-stage compressor, and a variable-speed compressor. These different modulation strategies were tested according to AHRI Standard 551/591 (2020), and their seasonal performance is given by a figure of merit, Integrated Part Load Value (IPLV.SI). All the experimental tests were done using the same R410A water chiller having a nominal cooling capacity of 8 kW. Based on the experimental results, the variable speed compressor has the best IPLV.SI, followed by the tandem combinations. Interestingly, both the tandem combinations (single speed + single speed and two-stage + single speed) have comparable seasonal performance despite having a different number of control states. The estimation of cycling losses using different standards also had an observable effect on the seasonal performance of the tandem combination.

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Pages : 10 p.

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Détails

  • Titre original : Comparative experimental analysis of different compressor capacity modulation strategies in R410A chiller with focus on seasonal performance.
  • Identifiant de la fiche : 30030280
  • Langues : Anglais
  • Sujet : Technologie
  • Source : 2022 Purdue Conferences. 26th International Compressor Engineering Conference at Purdue.
  • Date d'édition : 15/07/2022

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