What is the heat transfer coefficient of liquid nitrogen?
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The heat transfer coefficient of liquid nitrogen varies depending on the specific conditions and applications. Research has shown that the convective heat transfer coefficient of liquid nitrogen during cryogenic cooling can be determined through a combination of temperature simulation and experiments . Additionally, studies on liquid nitrogen spray cooling have indicated that the maximum heat transfer coefficient achieved was 16.67 W·cm^-2·K^-1, with a critical heat flux of 191.90 W·cm^-2 . Furthermore, in the context of cooling cryovials filled with cryoprotective agent solution in liquid nitrogen, different heat transfer coefficients were observed, ranging from 5 W/(m^2·K) to 245 W/(m^2·K) depending on the heat transfer regime, such as film boiling and nucleate boiling .
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Open access•Journal Article 9 Citations | The heat transfer coefficient of liquid nitrogen at the outer surface of a cryovial was determined to be 5 W/(m(2)·K) during film boiling and 245 W/(m(2)·K) during nucleate boiling. |
1 Citations | The heat transfer coefficient of liquid nitrogen ranges from 90 to 200 K, with values obtained experimentally for low-velocity flow conditions in a heat exchanger. |
| The heat transfer coefficient of liquid nitrogen was found to be 16.67 W·cm−2·K−1 in the study on liquid nitrogen spray cooling with specific spray height and heat sink surface diameter. | |
| The paper determines the convection heat transfer coefficient of Ti-5553 in liquid nitrogen cryogenic cutting conditions through temperature simulation and experiments. | |
30 Oct 2022 1 Citations | The paper does not directly address the heat transfer coefficient of liquid nitrogen. |
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