Experimental investigation on convective heat transfer mechanism in a scroll compressor

Jang, Kitae; Jeong, Sangkwon

doi:10.1016/j.ijrefrig.2005.12.002

Cited by 50 publications

(35 citation statements)

References 4 publications

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“…However, only the correlation for turbulent flow between flat plates provides results in agreement with the predictions for Re = 120000 (Figure 10). The correlation of Jang and Jeong (2006) gives estimates of ℎ 4 considerably greater than the other correlations in both conditions.…”

Section: Currently Available Heat Transfer Correlationsmentioning

confidence: 74%

“…The correlation of Jang and Jeong (2006) apply a correction factor to the correlation of spiral heat exchangers as a function of the Strouhal number, St: The results of the two-dimensional model were compared to estimates of heat transfer given by Equations (10)-(12). Besides such correlations, we also considered estimates of Nu from a correlation for turbulent flow between parallel flat plates, in which the Reynolds number is calculated based on the average length of the chamber, / .…”

Section: Currently Available Heat Transfer Correlationsmentioning

confidence: 99%

“…The accuracy of such models depends on the adequate description of different processes involved, such as suction and discharge, leakage and heat transfer. However, there are few studies (Sunder, 1997;Ooi and Zhu, 2004;Jang and Jeong, 2006) dedicated to convective heat transfer in scroll compressors, greatly due to the level of complexity imposed by the restricted space for measurement and small time scales. As a consequence, there remains much uncertainty about predictions of heat transfer for operating conditions found in actual applications.…”

Section: Introductionmentioning

confidence: 99%

“…For some operating conditions, their predictions of heat transfer coefficient were much higher than the values indicated by Sunder (1997). Jang and Jeong (2006) measured the temperature distribution in the stationary scroll and analyzed heat transfer for specific conditions by using an oscillating wall to simulate the orbiting scroll. The authors proposed a correction factor for the Nusselt number based on the Strouhal number to include the effect of the oscillating motion.…”

Section: Introductionmentioning

confidence: 99%

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A heat transfer correlation for the suction and compression chambers of scroll compressors

Pereira

Deschamps

2017

International Journal of Refrigeration

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Heat transfer in the suction and compression chambers of scroll compressors has not been sufficiently studied and typical correlations available in the literature are based on simplified flow conditions. This paper presents the results of a model developed to predict fluid flow and heat transfer inside the suction and compression chambers of scroll compressors. Due to the particular geometry of scroll compressors, an algorithm was developed to automatically adapt the computational mesh for each orbiting angle. Convective heat transfer is strongly affected by the flow in the nearwall region and for this reason a low Reynolds number turbulence model was adopted in the simulations. The study covered a wide range of operating conditions and geometric parameters, allowing the proposal of a new heat transfer correlation for scroll compressors that is compared with other correlations available in the literature.

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Section: Currently Available Heat Transfer Correlationsmentioning

confidence: 74%

Section: Currently Available Heat Transfer Correlationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A heat transfer correlation for the suction and compression chambers of scroll compressors

Pereira

Deschamps

2017

International Journal of Refrigeration

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“…The first one -1 -has been investigated for the spiral heat exchanger [11] and it is used to take into account the spiral geometry. The moving involute introduce a forced convection heat transfer and it is the purpose of the second coefficient -2 -to include that phenomenon [12]. The relations for the coefficients are given by…”

Section: Heat Transfersmentioning

confidence: 99%

Investigation on a scroll expander for waste heat recovery on internal combustion engines

Legros

Guillaume

Lemort

et al. 2013

8th International Conference on Compressors and Their Systems

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In the present article, a model of scroll expander will be introduced. This model is able to evaluate the performance of a given machine with influence of the geometry. Several losses are also included by the model such as internal leakages, heat transfers or mechanical losses. The forces generated by the gas pressure on the involutes can also be calculated.That expander model is used in order to demonstrate its potential and provide some guidelines to the design of a new expander suitable for the application. NOTATIONS 0

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Mathematical model of working process of oil free scroll vacuum pump

Бурмистров¹,

Salikeev²,

Raykov³

et al. 2017

Vak Forsch Prax

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Summary A mathematical model of oil free scroll machine working in vacuum conditions is considered. Differential equations and main assumptions in the model are presented. Four types of control volumes are specified. The model takes into consideration heat exchange between the pump working elements, change of clearances due to thermal deformations, and mobility of the scroll element wall in calculation of leakage. The comparison of the calculated values of the pumping speed with experimental values obtained at different rotation speed of the driveshaft is carried out.

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Experimental investigation on convective heat transfer mechanism in a scroll compressor

Cited by 50 publications

References 4 publications

A heat transfer correlation for the suction and compression chambers of scroll compressors

A heat transfer correlation for the suction and compression chambers of scroll compressors

Investigation on a scroll expander for waste heat recovery on internal combustion engines

Mathematical model of working process of oil free scroll vacuum pump

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