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Volume 3086, Issue 1
17 May 2024
THE 12TH INTERNATIONAL CONFERENCE ON MECHANICAL ENGINEERING (TSME-ICoME 2022)
14–16 December 2022
phu*ket, Thailand
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Research Article| May 17 2024
Thana Arkadumnuay;
Thana Arkadumnuay
1
Fluid Mechanics, Thermal Engineering and Multiphase Flow Research Lab (FUTURE), Department of Mechanical Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi (KMUTT)
, Bangmod, Bangkok 10140,
Thailand
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Somchai Wongwises
Somchai Wongwises a)
1
Fluid Mechanics, Thermal Engineering and Multiphase Flow Research Lab (FUTURE), Department of Mechanical Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi (KMUTT)
, Bangmod, Bangkok 10140,
Thailand
a)Corresponding author: somchai.won@kmutt.ac.th
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Author & Article Information
a)Corresponding author: somchai.won@kmutt.ac.th
AIP Conf. Proc. 3086, 090006 (2024)
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Citation
Thana Arkadumnuay, Somchai Wongwises; Evaporation heat transfer enhancement and pressure gradient of R-513A in a horizontal smooth tube. AIP Conf. Proc. 17 May 2024; 3086 (1): 090006. https://doi.org/10.1063/5.0205214
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Experimental studies to determine the average heat transfer coefficient (hav) and frictional pressure gradient (ΔPF/L) of R-513A flowing through a horizontal smooth tube during evaporation are investigated. The experimental setup comprises a double-tube heat exchanger with supplied water circulating inside the annulus in the opposite direction. The average heat transfer coefficient ratio (hav,513A/hav,134a) and frictional pressure gradient ratio ((ΔPF/L)513A/((ΔPF/L)134a) of R-513A and R-134a were compared in this study. The experimental results show hav and ΔPF/L obtained from R-513A are about 0.96 and 0.95 times lower than R-134a, respectively. For R-513A, the hav is lower due to a decreased convective effect, whereas the lower ΔPF/L is due to decreased flow resistance. The Nusselt number (Nu) is higher than R-134a, whereas the two-phase friction factor (fTP) is slightly higher.
Topics
Heat transfer, Engineering thermodynamics
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