Explain the various regimes of saturated pool boiling
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these are - natural convection regime.
nucleate regime.
transition regime
film boiling regime.
1) natural convection boiling :- boiling starts when the fluid come into its saturation temperature. but actually it needs some more temperature to boiling to be started . for water this temp. is about 2to 6 degrees . in the natural convection boiling we start to see the bubbles to form .
2) nucleate boiling :- this is the most desirable part of boiling heat transfer . in this part we can see the regions . at this part bubbles start to form in different nucleation sites.
3) transition boiling :- it is very much undesired and unstable part of boiling . in this stage we can see a huge drop of heat flux .
4) film boiling:- here we see that heat transfer increases . after getting the critical heat flux and then a decrease in the transition boiling the heater surface absorbs heat .
hope it helps you.....
nucleate regime.
transition regime
film boiling regime.
1) natural convection boiling :- boiling starts when the fluid come into its saturation temperature. but actually it needs some more temperature to boiling to be started . for water this temp. is about 2to 6 degrees . in the natural convection boiling we start to see the bubbles to form .
2) nucleate boiling :- this is the most desirable part of boiling heat transfer . in this part we can see the regions . at this part bubbles start to form in different nucleation sites.
3) transition boiling :- it is very much undesired and unstable part of boiling . in this stage we can see a huge drop of heat flux .
4) film boiling:- here we see that heat transfer increases . after getting the critical heat flux and then a decrease in the transition boiling the heater surface absorbs heat .
hope it helps you.....
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