Heat Transfer Characteristics of a Horizontal Wire in Pools of Liquid and Supercritical Hydrogen
- 186 Downloads
Heat transfer from a horizontal wire immersed in both liquid and supercritical hydrogen was measured with a quasi-steady increase of the heat generation rate for a wide range of bath temperatures and pressures. The nucleate boiling heat transfer coefficient is higher for higher pressures. The critical heat flux (CHF) is highest in the vicinity of 0.4 MPa and is expressed by Kutateladze’s equation. The CHFs become higher for higher degrees of subcooling. The heat transfer under supercritical pressures is the same as natural convection heat transfer in liquid hydrogen, but it deteriorates for heated surface temperautres higher than the pseudocritical temperature. The heat transfer correlation was derived based on the experimental data.
KeywordsHeat transfer Pool boiling Liquid hydrogen Supercritical pressure
This research was partly supported by JST, ALCA.
- 2.Steward, W.G.: Onset of nucleate and film boiling resulting from transient heat transfer to liquid hydrogen. Adv. Cryog. Eng. 35, 403–411 (1990)Google Scholar
- 3.Class, C.R., Dehaan, J.R., Piccone, M., Cost, R.B.: Boiling heat transfer to liquid hydrogen from flat surface. Adv. Cryog. Eng. 5, 54–62 (1960)Google Scholar
- 6.Kutateladze, S.S.: On the transition to film boiling under natural convection. Kotloturbostroenie 3, 10–12 (1948)Google Scholar
- 7.McAdams, W.H.: Heat Transmission. McGraw-Hill Book Co., New York (1954)Google Scholar
- 8.Kutateladze, S.S., Schneiderman, L.L.: Experimental study of the influence of the temperature of a liquid on a change in the rate of boiling. AEC-tr-3405, pp. 85–100 (1953)Google Scholar
- 9.Shiotsu, M., Shirai, Y., Tatsumoto, H., Hata, K., Kobayashi, H., Naruo, Y., Inatani, Y.: Forced flow heat transfer of supercritical hydrogen for superconductor cooling. Adv. Cryog. Eng. 1573 59A, 36–43 (2014)Google Scholar