Does water ever drop below room temperature

robfosters · 1 Sep 2014 at 18:16

Daft I know but I'm not sure.

If you heat a tank of water to above room temperature and then then let it cool, will it drop below room temp or will it drop to room temp and then stay there!

Mynight · 1 Sep 2014 at 18:18

I would have thought it would drop to room temp and stay there.

It can only expel as much heat as the air can absorb surely :confused:

.

Dis86 · 1 Sep 2014 at 18:19

Thermodynamics yo

BunnyKillBot · 1 Sep 2014 at 18:26

Dis86 said:
Thermodynamics yo

Unfortunately, pure mechanics doesn't always translate well to the real world. I have no idea. There may be a buffer zone, and it could be either exactly, slightly above or slightly below. Obviously it won't drop significantly or refrigerators wouldn't need power

What unknown variables are there? Does evaporation have any net effect on temperature?

Dis86 · 1 Sep 2014 at 18:29

Provided there are no outside forces acting upon the system it will reach thermal equilibrium.

Obviously if room temperature increases at a certain rate it will warm faster than the water so the water would be below room temp until it again reaches equilibrium.

adolf hamster · 1 Sep 2014 at 18:31

yes it does.

just not when left in a room at room temperature.

Orionaut · 1 Sep 2014 at 18:44

depends of the temperature/humidity of the room.

Under certain circumstances evaporative cooling could eventually result in the water becoming cooler than the air temperature in the room.

Jokester · 1 Sep 2014 at 18:51

Orionaut said:
depends of the temperature/humidity of the room.

Under certain circumstances evaporative cooling could eventually result in the water becoming cooler than the air temperature in the room.

What he says, would also be accelerated if there was breeze over the surface of the water.

Xordium · 1 Sep 2014 at 18:52

It depends. It is not a lab that process will not be happening in isolation. Theoretically presuming no other factors an equilibrium would be reached. There never are no other factors though!

arknor · 1 Sep 2014 at 19:01

is it near an open window?

aardvark · 1 Sep 2014 at 19:07

if its in a sealed tank then it will go to room temp and stop.

HangTime · 1 Sep 2014 at 19:15

Bear in mind that 'room temp' may not be static throughout the room, but I would expect it over the long term to get close to the immediate ambient temperate assuming that aren't any extreme conditions.

scorza · 1 Sep 2014 at 19:17

robfosters said:
Daft I know but I'm not sure.

If you heat a tank of water to above room temperature and then then let it cool, will it drop below room temp or will it drop to room temp and then stay there!

It will go below room temperature if you let it cool in a fridge. Hope that helps.

Haggisman · 1 Sep 2014 at 20:30

Depends on whether the room is at room temperature

Vulcan · 1 Sep 2014 at 20:42

The real question is, will the water take off on a treadmill and does it equal .9r?

arknor · 1 Sep 2014 at 20:44

is the water in a pressurised container or a vacuum?

LOAM · 1 Sep 2014 at 23:40

Is it on a treadmill?

D.P. · 2 Sep 2014 at 04:02

If you cut it half do you get 2 waters?

[FnG]magnolia · 2 Sep 2014 at 05:53

Longbow said:
The real question is, will the water take off on a treadmill and does it equal .9r?

arknor said:
is the water in a pressurised container or a vacuum?

LOAM said:
Is it on a treadmill?

D.P. said:
If you cut it half do you get 2 waters?

Dave · 2 Sep 2014 at 06:47

BunnyKillBot said:
Unfortunately, pure mechanics doesn't always translate well to the real world.

Pure mechanics / thermodynamics does translate pretty well for a large tank of water in a room