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Chinese Journal of Lasers, Volume. 49, Issue 5, 0507105(2022)

Dynamic Heat Transfer on Skin Phantom Exposed to R404A Pulsed Spray Cooling

Ran Yang, Xingang Zhu, Tao Yang, Zhifu Zhou*, and Bin Chen
Author Affiliations
  • State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (11)
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    References (17)
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    Figures & Tables(11)
    Schematic of experimental system of cryogen spray cooling

    Fig. 1. Schematic of experimental system of cryogen spray cooling

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    Epoxy surface temperature variations as a function of time for various spray distances and certain spray duration. (a) ts＝20 ms; (b) ts＝100 ms

    Fig. 2. Epoxy surface temperature variations as a function of time for various spray distances and certain spray duration. (a) ts＝20 ms; (b) ts＝100 ms

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    Epoxy surface heat flux variations as a function of time for various spray distances and certain spray duration. (a) ts＝20 ms; (b) ts＝100 ms

    Fig. 3. Epoxy surface heat flux variations as a function of time for various spray distances and certain spray duration. (a) ts＝20 ms; (b) ts＝100 ms

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    Epoxy surface heat transfer coefficient as a function of time for various spray distances and certain spray duration. (a) ts＝20 ms; (b) ts＝100 ms

    Fig. 4. Epoxy surface heat transfer coefficient as a function of time for various spray distances and certain spray duration. (a) ts＝20 ms; (b) ts＝100 ms

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    Epoxy surface temperature variations as a function of time for various spray durations and certain spray distance. (a) L＝20 mm; (b) L＝50 mm

    Fig. 5. Epoxy surface temperature variations as a function of time for various spray durations and certain spray distance. (a) L＝20 mm; (b) L＝50 mm

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    Epoxy surface heat flux as a function of time for various spray durations and certain spray distance. (a) L＝20 mm; (b) L＝50 mm

    Fig. 6. Epoxy surface heat flux as a function of time for various spray durations and certain spray distance. (a) L＝20 mm; (b) L＝50 mm

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    Epoxy surface heat transfer coefficient as a function of time for various spray durations and certain spray distance. (a) L＝20 mm; (b) L＝50 mm

    Fig. 7. Epoxy surface heat transfer coefficient as a function of time for various spray durations and certain spray distance. (a) L＝20 mm; (b) L＝50 mm

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    Epoxy surface heat flux as a function of surface temperature

    Fig. 8. Epoxy surface heat flux as a function of surface temperature

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    Normalized heat flux q/qmax as a function of normalized time t/tmax under different spray distances. (a) q/qmax and t/tmax;(b) correlation of q/qmax and t/tmax

    Fig. 9. Normalized heat flux q/qmax as a function of normalized time t/tmax under different spray distances. (a) q/qmax and t/tmax;(b) correlation of q/qmax and t/tmax

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    • Table 1. Thermal properties of epoxy resin and human epidermis[16]

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      Table 1. Thermal properties of epoxy resin and human epidermis[16]

      ParameterEpoxy resinEpidermis
      Specific heat capacity cp /(J·kg－1·℃－1)16313600
      Density ρ /(kg·m－3)10191200
      Thermal conductivity λ /(W·m－1·K－1)0.140.21
      Thermal diffusivity α /(m2·s－1)8.43×10－84.86×10－8

    • Table 2. Maximum surface heat flux qmax and its appearance time tmax under different spray distances

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      Table 2. Maximum surface heat flux qmax and its appearance time tmax under different spray distances

      Spray distance L /mmqmax/(kW·m－2)tmax/ms
      10432.39.5
      20327.810.25
      30353.111.25
      40330.913
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    Ran Yang, Xingang Zhu, Tao Yang, Zhifu Zhou, Bin Chen. Dynamic Heat Transfer on Skin Phantom Exposed to R404A Pulsed Spray Cooling[J]. Chinese Journal of Lasers, 2022, 49(5): 0507105

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    Paper Information

    Received: Jul. 13, 2021

    Accepted: Sep. 22, 2021

    Published Online: Mar. 9, 2022

    The Author Email: Zhou Zhifu (zfzhou@mail.xjtu.edu.cn)

    DOI:10.3788/CJL202249.0507105

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology