Simulation research on scroll refrigeration compressor with external cooling

Sun, Shu-Ming; Zhao, Yang; Li, Liansheng; Shu, Pengcheng

doi:10.1016/j.ijrefrig.2010.03.005

Cited by 21 publications

(21 citation statements)

References 13 publications

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“…The external cooling structure is designed in the fixed scroll and has been described carefully in the reference [13]. The internal water channel is in the scroll wall, along the involute angle of the scroll wall; the external channel is excavated in the fixed scroll cover in involute shape.…”

Section: Structure Of the Prototype Scroll Compressor With Cooling Stmentioning

confidence: 99%

“…According to the conservation law of mass and energy in the control volume, the change of temperature and mass during compression process as the function of orbiting angle of shaft can be expressed as follows [13] …”

Section: Governing Equations and Leakage Modelmentioning

confidence: 99%

“…As to the model of heat transfer, the related assumptions, boundary conditions, and heat transfer coefficient empirical correlations for each heat transfer boundary are considered according to the reference [13].…”

Section: Heat Transfer Modelmentioning

confidence: 99%

“…Because the heat transfer area and temperature difference between refrigerant and water changed a little with the water flowrate, it can be deduced that the total heat transfer coefficient is underestimated in the simulation model. The heat transfer coefficient at refrigerant side which is far lower than that at water side [13] played a key role in calculating the total heat transfer coefficient. Hence, the simulation heat transfer coefficient at refrigerant side is lower than the practical value, and the effect of water cooling is underestimated.…”

Section: Influence Of Water Flowratementioning

confidence: 99%

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Experimental investigation on the scroll refrigeration compressor with external cooling

Sun

Zhao

et al. 2011

Proceedings of the Institution of Mechanical Engineers, Part A:

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To improve the performance of scroll refrigeration compressor, an external cooling structure scroll compressor was designed and researched. A prototype with cooling structure was developed and tested. The thermodynamic model including the leakage, heat transfer, and friction was set up to simulate the working process of scroll compressor with external cooling. Experimental results show that coefficient of performance value of the prototype is improved by 0.31, the cooling capacity increases by 1281 W (12.9 per cent) and the discharge temperature reduces by 44 C (41 per cent) maximally when the water cooling is used. Increasing the water flowrate improves the volumetric efficiency and enhances the heat transfer between water and scroll compressor. When the rotational speed of compressor goes up, the volumetric efficiency increases remarkably while the quantity of heat transfer rises slowly. The simulated results have good coincidence with the experimental ones.

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Section: Structure Of the Prototype Scroll Compressor With Cooling Stmentioning

confidence: 99%

Section: Governing Equations and Leakage Modelmentioning

confidence: 99%

Section: Heat Transfer Modelmentioning

confidence: 99%

Section: Influence Of Water Flowratementioning

confidence: 99%

See 2 more Smart Citations

Experimental investigation on the scroll refrigeration compressor with external cooling

Sun

Zhao

et al. 2011

Proceedings of the Institution of Mechanical Engineers, Part A:

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“…developed a similar geometry description of the scroll compressor model Tseng and Chang (2006). andSun et al (2010) also propose a design optimization of the scroll compressor using geometrical models Rong and Wen (2009). used a simplified geometrical model to analyze tangential and axial leakage and related factors and their impact on performance.…”

mentioning

confidence: 99%

Scroll compressor modelling for heat pumps using hydrocarbons as refrigerants

Byrne

Ghoubali

Miriel

2014

International Journal of Refrigeration

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International audienceHydrocarbons are today considered as promising alternatives to hydrofluorocarbons thanks to their low environmental impact and their easy implementation. However, some precautions have to be taken to thwart their flammability. European regulations impose to take stringent measures regarding components and to install heat pumps in unoccupied spaces. Nevertheless manufacturers keep working on components for hydrocarbons. In the frame of a research project on heat pumps for simultaneous heating and cooling, an R407C prototype working with a scroll compressor was built and tested. A near-industrial prototype is today being designed for propane with the help of recent modelling techniques. After having detailed the main issues regarding hydrocarbons as refrigerants, this article reviews scroll compressor modelling studies and presents the development of a thermodynamically realistic scroll compressor model. It was first developed for R407C and then adapted to thermodynamic properties of hydrocarbons and to other sizes of compressors

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