for that perpuse no need to use flasks are any equipment to restrict heat tranfering.
1)add small amount of cold water to hot water when you are placing at outside to use
2)place the hot water with bowl inner layer with block coated paint.
caution:dont place water on the bowl with outer layer as block. generally in villages we having
wood burning stoves.which produce lot of co2 emissions and ash content,which makes the bowl
as make block colour at outer layer.generally this type of bowls can tranfer heat quickly
due to outer layer as block
above tips for not only water and its applicable to any hot conents also
do you observe this???????
if you put bowl with hot water placed at outside environment.
&&&
and place another bowl with hot water and add some amount of cold water to mix.
and place same environment.
what you observed
we can obseve that the pure hot water bowl lost the hotness very steep maner.
but the mixed water content can looses the hotness very slowly
why????????????????????
very simple! the heat can transfer quickly in solids(bowl) next liquids(water),
next gasses(air)
heat tranfering rate lets say HTR
HTR(bowl)>HTR(water)>HTR(air)
1)the bowl with pure hot water directly contacted to earth through base of bowl.
heat can tranfer with the high rate equals to HTR(solids)
2)the second bowl with mixed content of water(hot+small amout of cold)
dont having direct contact with earth
why ,because the small amount of cold water dips in hot water and
make a layer at base of bowl its makes a resistive to heat compare to solid
note:cold water weighter than hot water(atoms expens to aquiring energy of heat energy)
here heat transfering through water layer so HTR(water)<HTR(Solid),sooooo heat tranfering was slow.
1)add small amount of cold water to hot water when you are placing at outside to use
2)place the hot water with bowl inner layer with block coated paint.
caution:dont place water on the bowl with outer layer as block. generally in villages we having
wood burning stoves.which produce lot of co2 emissions and ash content,which makes the bowl
as make block colour at outer layer.generally this type of bowls can tranfer heat quickly
due to outer layer as block
above tips for not only water and its applicable to any hot conents also
do you observe this???????
if you put bowl with hot water placed at outside environment.
&&&
and place another bowl with hot water and add some amount of cold water to mix.
and place same environment.
what you observed
we can obseve that the pure hot water bowl lost the hotness very steep maner.
but the mixed water content can looses the hotness very slowly
why????????????????????
very simple! the heat can transfer quickly in solids(bowl) next liquids(water),
next gasses(air)
heat tranfering rate lets say HTR
HTR(bowl)>HTR(water)>HTR(air)
1)the bowl with pure hot water directly contacted to earth through base of bowl.
heat can tranfer with the high rate equals to HTR(solids)
2)the second bowl with mixed content of water(hot+small amout of cold)
dont having direct contact with earth
why ,because the small amount of cold water dips in hot water and
make a layer at base of bowl its makes a resistive to heat compare to solid
note:cold water weighter than hot water(atoms expens to aquiring energy of heat energy)
here heat transfering through water layer so HTR(water)<HTR(Solid),sooooo heat tranfering was slow.
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