Estimate the heat transfer coefficient, h, associated with Points A, B, C, D, and E in Figure 10.4. Which point is associated with the largest value of h? Which point correspond to the smallest value of h? Determine the thickness of the vapor blanket at the Leidenfrost point, neglecting radiation heat transfer through the blanket. Assume the solid is a flat surface.

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(W/M) b 107 106 105 104 10³ Free convection 1 -4max -4min A eta Isolated Jets and bubbles columns ONB ATEA 5 Nucleate B ATC Boiling regimes 10 P Equation 9.31 AT₂ 30 Transition Critical heat flux, ma AT=Tr-Ta (°C) Boiling crisis- D ATED 120 Film -E Leidenfrost point, min 1000