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1 article(s) from Dağıdır, Kayhan

Experimental investigation of usage of POE lubricants with Al₂O₃, graphene or CNT nanoparticles in a refrigeration compressor

Kayhan Dağıdır and
Kemal Bilen

Beilstein J. Nanotechnol. 2023, 14, 1041–1058, doi:10.3762/bjnano.14.86

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Figure 1: The experimental setup. The components of the system are as follows: 1. Compressor: BITZER 4CES-6Y-...

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Figure 2: The a) FE-SEM micrograph and b) EDS analysis of Al₂O₃ nanoparticles.

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Figure 3: X-ray diffraction pattern of Al₂O₃ nanoparticles [21].

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Figure 4: The a) FE-SEM micrograph with a scale bar of 20 µm, b) FE-SEM micrograph with a scale bar of 10 µm,...

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Figure 5: The XRD pattern of the graphene nanoplatelets.

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Figure 6: The a) FE-SEM micrograph with a scale bar of 200 nm, b) FE-SEM micrograph with a scale bar of 400 n...

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Figure 7: XRD pattern of the CNT nanoparticles.

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Figure 8: The devices used to implement the two-step method are a) mechanical stirrer, b) ultrasonic stirrer,...

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Figure 9: Zeta potential of nanolubricants containing Al₂O₃ at the lowest and highest mass fractions [21].

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Figure 10: Images of the FPS2800 fluid property sensor.

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Figure 11: P–h diagram of the refrigeration system for validation tests.

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Figure 12: Measurement of a) density and b) dynamic viscosity of water for validation at 25 °C.

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Figure 13: Required compressor electrical power for the usage of nanolubricants with a) Al₂O₃, b) graphene, an...

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Figure 14: Required compressor electrical power for nanolubricants with optimum mass fraction of nanoparticles....

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Figure 15: Raman spectroscopy of the graphene nanoplatelets.

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Figure 16: XPS of the graphene nanoplatelets.

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Figure 17: Kinematic viscosity of nanolubricants with a) Al₂O₃, b) graphene, and c) CNTs.

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Figure 18: Kinematic viscosity of nanolubricants with optimum fraction.

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Published 02 Nov 2023

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Experimental investigation of usage of POE lubricants with Al2O3, graphene or CNT nanoparticles in a refrigeration compressor

Experimental investigation of usage of POE lubricants with Al₂O₃, graphene or CNT nanoparticles in a refrigeration compressor