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Journals / Sigma Mühendislik ve Fen Bilimleri Dergisi / 2014 / Cilt: 32 - Sayı: 1

EVAPORATIVE HEAT TRANSFER AND PRESSURE DROP OF R410A AND R32 IN SMOOTH HORIZONTAL TUBE

Aliihsan KOCA
Zafer GEMİCİ
Pages
32–50
Publication Date
2014-03-01
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The results from Matlab program are compared with experimental data.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Flow boiling heat transfer of R410A and R32 inside a smooth horizontal tube whose hydraulic diameters are 5,6 and 7mm.
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Key Findings & Data:The mass flux was varied from 100 to 400 , heat flux from 5 to 15 , as the saturation temperature were maintained at -30 °C and -40 °C.
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Conclusion & Impact:The results from Matlab program are compared with experimental data.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:R410 · A R32 · heat transfer

Abstract

Flow boiling heat transfer of R410A and R32 inside a smooth horizontal tube whose hydraulic diameters are 5,6 and 7mm. The mass flux was varied from 100 to 400 , heat flux from 5 to 15 , as the saturation temperature were maintained at -30 °C and -40 °C. The effects of the imposed wall heat flux, mass flux, vapor quality on the evaporation heat transfer and pressure drop discussed as a function of vapor quality and tube length. The results from Matlab program are compared with experimental data.

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Cite This Article

KOCA, A., GEMİCİ, Z. (2014). EVAPORATIVE HEAT TRANSFER AND PRESSURE DROP OF R410A AND R32 IN SMOOTH HORIZONTAL TUBE. Sigma Mühendislik ve Fen Bilimleri Dergisi, Cilt: 32 - Sayı: 1, 32–50. https://ajindex.com/articles/419375

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References (10)

  1. Chang, Y.J. Chiang, S.K. Chung, T.W. Wang, C.C. Two-phase frictional characteristics of R410A and air-water in a 5 mm smooth tube, ASHREA Trans. 106 (1) (2000) 792-797
  2. Choi K.I., Pamitran, J.T. Oh, Boiling heat transfer of R410Ain horizontal small diameter tubes, Proceedings of 2002 winter annual conference, The Society of Air-Conditioning and Refrigerating Engineers of Korea, (2002), [p.283-288]
  3. Ebisu, T. Torikoshi, K. Heat transfer characteristics and correlations for R410A flowing inside a horizontal smooth tube, ASHREA Trans. 104 (2) (1998), 556-561
  4. Greco A., Vanoli,G.P., Flow boiling heat transfer with HFC mixtures in a smooth horizonal tube,Experimental Thermal Fluid Science 29 (2005), 716-730
  5. Gungor, K.E., Winterton, R.H.S. A general correlation for flow boiling in tubes and annuli, Int. J. Heat and Mass Transfer 29 (1986), 351-358
  6. Jatuporn Kaew-On, Experimental investigation of evaporation heat transfer coefficient and pressure drop of R410A in a multiport mini-channels. International Journal of Refrigeration 32 (2009), 124-127
  7. Kim, Y. Seo, K.Chung, J.T. evaporation heat transfer characteristics of R410A in 7 adn 9.52 mm smooth/micro-fin tubes, Int. J. Refrigeration 25 (2002), 716-730
  8. Lockhart, R.W. Martinelli, R.C. Proposed correlation of data for isothermal two-phase two-component flow in pipes, Chem. Eng. Prog. 45 (1945), 39-45
  9. Park, C.Y. Hrnjak, P.S. CO2 and R410A flow boiling heat transfer, pressure drop, and flow pattern at low temperatures in a horizonal smooth tubes. International Journal of Refrigeration 30 (2007), 166-178
  10. Yun,R., Heo, J.H., Kim, Y., Evaporative heat transfer and pressure drop of R410A in micro-channels. International Journal of Refrigeration 29 (2006), 92-100.