Water vs Steam Burns: Which is More Severe?

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Homework Help Overview

The discussion centers around the comparative severity of burns caused by water and steam, both at 100°C. Participants explore the underlying physical principles, including kinetic energy and latent heat of vaporization, to understand the differences in burn severity.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants discuss the kinetic energy of steam compared to water, with some referencing the concept of latent heat of vaporization as a factor in burn severity. There are attempts to clarify the implications of specific volume in super-heated steam.

Discussion Status

The conversation is ongoing, with some participants providing insights into the energy dynamics of steam and water. There is a recognition of the complexities involved in understanding the severity of burns, but no consensus has been reached yet.

Contextual Notes

Participants are considering the effects of temperature and phase changes on burn severity, with specific references to super-heated steam and its properties. There may be assumptions about the conditions under which the burns occur that are not fully articulated.

pavadrin
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Which gives the more sever burn, water or steam both at 100°C? I think it is the steam because it has more kinetic energy in it, as the water molecules have broken the bonds of the liquid and has a lower specific heat capacity, but I would like some confirmation, or if incorrect the right answer and why.
Thanks in advance to the person/s who reply
Pavadrin
 
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Yes, steam at 100 degrees would cause the more severe burn owing to the fact that for water to be converted into heat, energy is required (known as latent heat of vapourisation), which in turn increases the KE of steam molecules .
 
thanks arunbg
 
hi,
specific volume of vapour at super-heated condition is less than at saturated vapour condition, hence, super-heated steam is easily transferable(higher KE), that is why, these are applied in boilers as they are carried at a faster rate & the energy carried by each vapour part is higher enough to cause turbine operation at a lower mass flow rate due to its high KE..
 
hi,
specific volume of vapour at super-heated condition is less than at saturated vapour condition, hence, super-heated steam is easily transferable(higher KE), that is why, these are applied in boilers as they are carried at a faster rate & the energy carried by each vapour part is higher enough to cause turbine operation at a lower mass flow rate due to its high KE..
 

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