Boiling Heat Transfer - Summary of Concepts

Boiling Heat Transfer - Summary of Concepts - Chapter 10...

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Chapter 10 Summary of Concepts 1. Pool Boiling pg. 596 The liquid is quiescent, and its motion near the surface is due to free convection and due to mixing induced by bubble growth and detachment. Forced Convection Boiling pg. 596 Fluid motion is induced be external means, as well as by free-convection and bubble- induced mixing. Sub-Cooled Boiling The temperature of the liquid is below the saturation temperature and bubbles formed in the liquid may condense in the liquid. Saturated Boiling The temperature of the liquid slightly exceeds the saturation temperature, and bubbles formed at the surface are propelled through the fluid by buoyancy forces and eventually escape from a free surface. 2. Excess Temperature es s a t TT - T Δ ± 3. Boiling Curve – see figure on pg 1 of ‘Boiling’ Notes and text pages 597 and 598, Figure 10.3, 10.4 4 max s q , 4 min s q modes of boiling 4. Nucleate Boiling heat flux relation to e T Δ Equations 10.4 and 10.5
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Boiling Heat Transfer - Summary of Concepts - Chapter 10...

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