Razzor7 said:I don't know the volume, is this information important?
The shape of the container - cooling happens only on the surface of the water.Razzor7 said:Are there any other important details we need?
It is extrordinarily difficult (virtually impossible) to predict in advanced the heat transfer performance of a vessel, from scratch. Almost all real problems like this are solved via that second method: using experimental data as a baseline at least to give you the heat transfer coefficient. That curve, though, is Newton's law of cooling, so once you have a couple of data points, you aren't estimating anymore, you have all the information to plug into the equation and calculate the answer.mgb_phys said:The shape of the container - cooling happens only on the surface of the water.
If it is open or closed
The insulation value of the container
The temperature of the room
The humidity if the water is warm enough that evaporation is going to matter.
The easy way is to measure the temperature drop in the 1st minute, 2nd minute etc for a few data points and plot a curve and then estimate where it crosses the final temperature you want.
The cooling time of water refers to the amount of time it takes for water to decrease in temperature to a desired level.
The volume of water, starting temperature, and surrounding temperature all affect the cooling time of water. Other factors such as air flow and agitation can also impact the cooling time.
The larger the volume of water, the longer it will take to cool down. This is because there is more mass to cool and it takes longer for heat to dissipate from a larger body of water.
The higher the starting temperature of water, the longer it will take to cool down. This is because there is a larger difference in temperature between the water and its surroundings, causing heat to dissipate at a slower rate.
The surrounding temperature plays a significant role in the cooling time of water. If the surrounding temperature is lower than the starting temperature of the water, it will cool down faster. However, if the surrounding temperature is higher, it will take longer for the water to cool down.