Optimization of a scroll compressor for liquid flooding

Bell, Ian H.; Groll, Eckhard A.; Braun, James E.; King, Galen B.; Horton, W. Travis

doi:10.1016/j.ijrefrig.2012.07.011

Cited by 20 publications

(9 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The global model computes the mass flow rate, the average discharge temperature and enthalpy, the shaft power and the efficiencies of the machine. Moreover, experimental validation of the models (Bell et al, 2012b), and optimization of scroll compressors for large amounts of oil (Bell et al, 2012c) were presented. Blunier et al (2009) conducted a dynamical model of a scroll compressor.…”

Section: Introductionmentioning

confidence: 99%

Semi-empirical model of scroll compressors and its extension to describe vapor-injection compressors. Model description and experimental validation

Tello-Oquendo

Navarro-Peris

Barceló-Ruescas

et al. 2019

International Journal of Refrigeration

View full text Add to dashboard Cite

This paper presents a semi-empirical model of scroll compressors and proposes a methodology in order to extend this model to vapor-injection scroll compressors. The model takes into account the ideal evolution of the refrigerant throughout the compressor and considers the main sources of losses in the compression process. The model is able to predict the compressor and volumetric efficiencies in terms of ten empirical parameters, which have a direct physical interpretation. For the model validation, a series of four non-injected scroll compressors of different capacities were tested using R-290 and a scroll compressor with vapor-injection (SCVI) was characterized using R-407C. Results show a correct agreement between the experimental and calculated compressor efficiencies, with a maximum deviation of ±5%. Furthermore, the model estimates accurately the discharge temperature of the refrigerant, compressor power input, and refrigerant mass flow rate in the suction and injection port. Finally, the SCVI model response was evaluated by varying the intermediate pressure and the injection superheat.

show abstract

Section: Introductionmentioning

confidence: 99%

Semi-empirical model of scroll compressors and its extension to describe vapor-injection compressors. Model description and experimental validation

Tello-Oquendo

Navarro-Peris

Barceló-Ruescas

et al. 2019

International Journal of Refrigeration

View full text Add to dashboard Cite

show abstract

“…( (3) expander design with the regime of liquid-flooded expansion. Since the liquid-flooded expansion will affect the expander performance [26], the optimal built-in volume ratio and the geometric parameters could be altered due to the flooding liquid [46].…”

Section: Further Discussionmentioning

confidence: 99%

Experimental investigation of an organic Rankine cycle with liquid-flooded expansion and R1233zd(E) as working fluid

Lecompte

Nieuwenhuyse

et al. 2021

Energy Conversion and Management

View full text Add to dashboard Cite

“…In practice, there is only one moving element that guarantees a positive impact on the machine dimensions, reliability, and even noise. However, their design strategy has not been improved over the years and it is still based on standard theoretical approaches and/or thermodynamical methods, considering the volumes to displace as the key parameter for the machine design [3,9]. Design strategies that lead to building machines characterized by medium-to-poor efficiency in turn negatively affect the overall performance of the systems in which they are installed [2,10].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Inner Fluid-Dynamics of Scroll Compressors and Comparison between CFD Numerical and Modelling Approaches

Cavazzini¹,

Giacomel²,

Benato³

et al. 2021

Advances in Energy Research

View full text Add to dashboard Cite

Scroll compressors are widely adopted machines in both refrigeration systems and heat pumps. However, their efficiency is basically poor and constitutes the main bottleneck for improving the overall system performance. In fact, due to the complex machine fluid dynamics, scroll design is mainly based on theoretical and/or semi-empirical approaches. Designs strategies that do not guarantee an in-depth analysis of the machine behavior can be supplemented with a Computation Fluid Dynamics (CFD) approach. To this purpose, in the present work, the scroll compressor inner fluid dynamics is numerically analyzed in detail using two CFD software and two different modelling strategies for the axial gap. The analysis of the fluid evolution within the scroll wraps reveals unsteady phenomena developing during the suction and discharge phases, amplified by the axial clearance with negative impact on the main fluid flow (e.g., −13% of average mass flow rate for an axial gap of 30 µ) and on the scroll performance (e.g., +26% of average absorbed power for an axial gap of 30 µ). In terms of accuracy, the k-ε offers good performance on the estimation of average quantities but proves to be inadequate for capturing the complexity of the unsteady phenomena caused by the axial gap (e.g., −19% of the absorbed power in case of perfect tip seal). The need for Advances in Energy Research: 2 nd Edition 3 www.videleaf.com considering specific geometric details in design procedures is highlighted, and guidelines on the choice of the most suitable numerical model are provided depending on the analysis needs.

show abstract

Optimization of a scroll compressor for liquid flooding

Cited by 20 publications

References 6 publications

Semi-empirical model of scroll compressors and its extension to describe vapor-injection compressors. Model description and experimental validation

Semi-empirical model of scroll compressors and its extension to describe vapor-injection compressors. Model description and experimental validation

Experimental investigation of an organic Rankine cycle with liquid-flooded expansion and R1233zd(E) as working fluid

Analysis of the Inner Fluid-Dynamics of Scroll Compressors and Comparison between CFD Numerical and Modelling Approaches

Contact Info

Product

Resources

About