Thermo-Fluidic Analysis of Pulsating Heat Pipes Charged with Water-Based Immiscible Fluid Pairs

Burak Markal; Ramazan Varol

doi:10.29130/dubited.1115581

EN TR

Thermo-Fluidic Analysis of Pulsating Heat Pipes Charged with Water-Based Immiscible Fluid Pairs

Abstract

Immiscible fluids may provide operational flexibility for pulsating heat pipes (PHPs) due to thermo-hydrodynamic diversity lead by each pure component. In this regard, present paper focuses on the thermo-fluidic analysis of non-uniform pulsating heat pipes charged with water-based immiscible fluid pairs. Research parameters cover gravity effect via the inclination angles (IA) of 0o and 90o, and fluid pair effect via two different water-based immiscible binary fluids as Water (W) – Hexane (H), and Water (W) – Pentane (P). The volumetric mixing ratios are W:H=1:1, 1:4, 4:1, 1:0, 0:1, and W:P=1:1, 1:4, 4:1, 1:0, 0:1; and the non-uniform flat plate type pulsating heat pipe (FP-CLPHP) has alternating-sequence parallel channels. The experiments are performed at the filling ratio of 40% (FR=40%), and flow phenomena is visualized. As some conclusions; at vertical orientation, the FP-CLPHPs having binary fluids of water-pentane show better thermal performance compared to the pure counterparts. Especially, the heat transfer characteristics of W:P=1:1 are the best ones among all the pure and binary fluids. On the other hand, as a conclusion of combination of non-uniform design and suitable thermophysical properties, the FP-CLPHPs charged with pure pentane, pure hexane or binary fluid of W:P=1:4 can work independent from gravitational force.

Keywords

Immiscibility, Pulsating heat pipe, Fluid pairs, Thermo-fluidic analysis

Supporting Institution

The Scientific and Technological Research Council of Turkey (TUBITAK)

Project Number

217M341

Thanks

The Scientific and Technological Research Council of Turkey (TUBITAK) supported this study with the project number of 217M341.

Su Bazlı Karışmayan Akışkan Çiftleriyle Yüklü Atımlı Isı Borularının Termo-Akış Analizi

Abstract

Birbiriyle karışmayan akışkanlar, her bir saf bileşenin sebep olabileceği termo-hidrodinamik farklılık nedeniyle, atımlı ısı boruları (PHP’ler) için çalışma esnekliği sağlar. Bu kapsamda, bu çalışma su bazlı karışmayan akışkan çiftleri ile yüklenmiş üniform olmayan atımlı ısı borularının termo-akışkan analizine odaklanmaktadır. Araştırma parametreleri; 0º ve 90º eğim açıları (IA) aracılığıyla yer çekimi etkisini ve su (W) – hekzan (H) ve su (W) – pentan (P) olmak üzere iki farklı su bazlı karışmayan ikili akışkanlar aracılığıyla akışkan çifti etkisini kapsamaktadır. Hacimsel karışım oranları; W:H=1:1, 1:4, 4:1, 1:0, 0:1 ve W:P=1:1, 1:4, 4:1, 1:0, 0:1’dir ve üniform olmayan düz plaka tipi atımlı ısı borusu (FP-CLPHP) alternatif sıralı paralel kanallara sahiptir. Deneyler %40 dolum oranında (FR=40%) yapılmıştır ve akış olayları görüntülenmiştir. Bazı sonuçlar şu şekildedir: düşey konumda, su-pentan ikili akışkanlarına sahip FP-CLPHP’ler, saf akışkanlı olanlara kıyasla daha iyi ısıl performans göstermiştir. Özellikle, W:P=1:1’in ısı transfer karakteristikleri bütün saf ve ikili akışkanlar arasında en iyidir. Diğer taraftan, üniform olmayan tasarım ve uygun termo-fiziksel özelliklerin birleşiminin bir sonucu olarak, saf pentan, saf hekzan veya W:P=1:4 ikili akışkanıyla yüklü FP-CLPHP’ler yer çekimi kuvvetinden bağımsız çalışabilir.

Keywords

Karışmama, Atımlı ısı borusu, Akışkan çiftleri, Termo-akış analizi

Project Number

217M341

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Details

Primary Language

English

Subjects

Engineering

Journal Section

Research Article

Authors

Burak Markal ^*
0000-0001-6356-3503
Türkiye

Ramazan Varol
0000-0002-5950-7629
Türkiye

Publication Date

January 26, 2024

Submission Date

May 11, 2022

Acceptance Date

March 6, 2023

Published in Issue

Year 2024 Volume: 12 Number: 1

DOI

https://doi.org/10.29130/dubited.1115581

IZ

https://izlik.org/JA55RP96DR

APA

Markal, B., & Varol, R. (2024). Thermo-Fluidic Analysis of Pulsating Heat Pipes Charged with Water-Based Immiscible Fluid Pairs. Duzce University Journal of Science and Technology, 12(1), 63-80. https://doi.org/10.29130/dubited.1115581

AMA

1.Markal B, Varol R. Thermo-Fluidic Analysis of Pulsating Heat Pipes Charged with Water-Based Immiscible Fluid Pairs. DUBİTED. 2024;12(1):63-80. doi:10.29130/dubited.1115581

Chicago

Markal, Burak, and Ramazan Varol. 2024. “Thermo-Fluidic Analysis of Pulsating Heat Pipes Charged With Water-Based Immiscible Fluid Pairs”. Duzce University Journal of Science and Technology 12 (1): 63-80. https://doi.org/10.29130/dubited.1115581.

EndNote

Markal B, Varol R (January 1, 2024) Thermo-Fluidic Analysis of Pulsating Heat Pipes Charged with Water-Based Immiscible Fluid Pairs. Duzce University Journal of Science and Technology 12 1 63–80.

IEEE

[1]B. Markal and R. Varol, “Thermo-Fluidic Analysis of Pulsating Heat Pipes Charged with Water-Based Immiscible Fluid Pairs”, DUBİTED, vol. 12, no. 1, pp. 63–80, Jan. 2024, doi: 10.29130/dubited.1115581.

ISNAD

Markal, Burak - Varol, Ramazan. “Thermo-Fluidic Analysis of Pulsating Heat Pipes Charged With Water-Based Immiscible Fluid Pairs”. Duzce University Journal of Science and Technology 12/1 (January 1, 2024): 63-80. https://doi.org/10.29130/dubited.1115581.

JAMA

1.Markal B, Varol R. Thermo-Fluidic Analysis of Pulsating Heat Pipes Charged with Water-Based Immiscible Fluid Pairs. DUBİTED. 2024;12:63–80.

MLA

Markal, Burak, and Ramazan Varol. “Thermo-Fluidic Analysis of Pulsating Heat Pipes Charged With Water-Based Immiscible Fluid Pairs”. Duzce University Journal of Science and Technology, vol. 12, no. 1, Jan. 2024, pp. 63-80, doi:10.29130/dubited.1115581.

Vancouver

1.Burak Markal, Ramazan Varol. Thermo-Fluidic Analysis of Pulsating Heat Pipes Charged with Water-Based Immiscible Fluid Pairs. DUBİTED. 2024 Jan. 1;12(1):63-80. doi:10.29130/dubited.1115581

Thermo-Fluidic Analysis of Pulsating Heat Pipes Charged with Water-Based Immiscible Fluid Pairs

Abstract

Keywords

Supporting Institution

Project Number

Thanks

Su Bazlı Karışmayan Akışkan Çiftleriyle Yüklü Atımlı Isı Borularının Termo-Akış Analizi

Abstract

Keywords

Project Number

References

Details

Primary Language

Subjects

Journal Section

Authors

Publication Date

Submission Date

Acceptance Date

Published in Issue

DOI

IZ

Cite