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The type of boilimg in which small bubbles formed at surface or within the liquid is calles nucleate boiling.by Kamran Hussain Ktk
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∙ 10y ago
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What is multi-nucleate?
These are the cells having two or more nuclei.
Are red blood cells nucleate or anucleate?
no nucleus
Differentiate between evaporation and boiling?
Some key points are 1) Evaporation takes internal energy while for boiling we have to provide external energy or we have to reduce the pressure. 2) As Evaporation takes internal energy therefore evaporation results in cooling while this is not observed in boiling. 3) Evaporation can occur below saturated temperature while Boiling occurs only at and above saturated temperature. 4) Evaporation occurs at only at the liquid/vapor interface while Boiling may occur at a solid/liquid interface. 5) Vapor bubbles are formed in Boiling while in Evaporation there are no bubble formation and no bubble motion. 6) There are different regimes of boiling (like nucleate boiling, transition boiling, film boiling etc.) while these regimes are not present in Evaporation. 7) Rate at which a substance changes from liquid to vapor through Evaporation is much slower than when Boiling. 8) Example of Evaporation are Water in a lake at 20°C, evaporates to air at 20°C and 60 percent relative humidity since the saturation pressure of water at 20°C is 2.34 kPa, and the vapor pressure of air at 20°C and 60 percent relative humidity is 1.4 kPa. Other examples of evaporation are the drying of clothes, fruits, and vegetables; the evaporation of sweat to cool the human body; and the rejection of waste heat in wet cooling towers. i am hoping that the above comparison will give you the clear picture about the evaporation and boiling.
What are the differences between boiling and evaporation?
Boiling- i) It is a bulk phenomena.ii) The substance changes it's state only at it's boiling point.iii) It doesn't give a cooling effect.Evaporation- i) It is a surface phenomena.ii) The substance does not change only at it's boiling point.iii) It gives a cooling effect.EVAPORATIONevaporation takes place silentlyit takes place at all temp.its a natural processit takes place only on surfacerate of evaporation depends on area of free surfaceBOILINGits associated with characteristic soundits takes place at all temp.to be heated for boilingat constant temp. boiling takes placeboiling takes place at all regions of liquidit does not depend on free surface
How does the boiling point of saltwater compare to the boiling point of freshwater?
The boiling point of freshwater is lower than the boiling point of saltwater.
What has the author Y H Lim written?
Y. H. Lim has written: 'Subcooled nucleate boiling in cooling channels for pressure die casting'
What has the author Chester Wright Gates written?
Chester Wright Gates has written: 'Some experiments in nucleate boiling heat transfer' -- subject(s): Aeronautics
What has the author Yih-Yun Hsu written?
Yih-Yun Hsu has written: 'Transport processes in boiling and two-phase systems, including near-critical fluids' -- subject- s -: Fluids, Heat, Nucleate boiling, Thermal properties, Transmission, Two-phase flow
What is multi-nucleate?
These are the cells having two or more nuclei.
How do you nucleate an oyster?
You eat clams
Are red blood cells nucleate or anucleate?
no nucleus
What does the morpheme nucleate mean?
The morpheme "nucleate" refers to something that has a central or core structure, like a nucleus. It can also mean to form or develop around a central point.
Are red blood cells nucleate?
red blood cells that have not lost their nucleus.
What has the author Thangamani written?
Thangamani is the author of several works of fiction and non-fiction, including novels and short stories in Tamil literature. Some of his notable works include "Oru Kanadi Maathi," "Varadan," and "Ippadikku En Kadhal."
Is it true unicellular protists are kinds of prokaryotic cells?
No, all the "protists" are nucleate, and so are eukaryotic.
What is the Rohsenow eqution of heat transfer in boiling liquids?
The equation developed by Rohsenow (1952) for correlating heat transfer data for surface-boiling liquids is evaluated. It is suggested that the nucleate boiling equation may be based on inadquate analyses of published heat transfer data, and may be an unreliable means of predicting boiling heat transfer rates for systems that have not been tested in advance. The difficulties involved in obtaining a generalized correlation equation which accounts for the geometry, surface tension and superheat in pool boiling is assessed. It is hypothesized that, while Rohsenow's equation may have considered the buoyancy effect due to the ratio of the densities of the vapor and liquid phases, the inertial effect of the ratio also needs to be incorporated into the analysis.
Why are boiling chips placed in distilling flask?
Because glass is very smooth, it is difficult for bubbles to nucleate on the surface. Boiling chips are added to provide a good surface for nucleation and vaporization of the liquid is more or less steady and continuous. Without them, the liquid can become superheated and boil somewhat explosively with superheated metastable regions of the liquid undergoing homogenous nucleation in the bulk of the liquid and rapidly expanding. Evaporation of the liquid occurs in somewhat random violent bursts.
