5.1 Practical Applications
Some uses where we can apply our results is when we want to drinking water. Instead of always taking water from the tap, we can take a relatively large amount of sea water and leave it over a few days to let it evaporate. This may seem like a very cumbersome process, but our objective is to save water, and as much as we would like it to be convenient for people, it cannot always be achieved.
This process may only provide a day's, or maybe even less, worth of clean drinking water, but imagine Singapore's population, around 5 million, doing that and the amount of water we can save and recycle.
That evaporated water need not only be used for drinking. If people do not trust the water, they can use it to clean their homes or water their plants.
The above application can also be useful to people in other countries that are truly suffering from water shortage. From the dirty water that they have, they can leave it to evaporate. Although it will be very slow, as mentioned above, over a long period of time it is expected that there will be an increase, if only a little, in the amount if clean water that they have.
In countries that suffer constantly from droughts, they can apply the knowledge to prevent the factors from affecting the water that they have, thus decreasing the rate of which their water will evaporate away.
Evaporation can also be used to get salt. Salt is retrieved from sea water evaporating. This can be used together with the above mentioned used, getting clean water from dirty water, just that in this context we will be using sea water instead. By leaving the sea water to evaporate, we ca get both get clean drinking water and salt for our food as well. It's killing two birds with one stone.
Evaporation is also important in the use of cooling, such as refrigeration or air-conditioning. The reason why we sweat is so that the liquid drops on our skin can evaporate the heat away from our bodies. The same concept is applied in refrigeration and air-conditioning.
5.2 Areas for Further Study
Evaporation is only a part of the water cycle, which is shown in the image below.
(U.S. Department of the Interior and U.S. Geological Survey, 2014)
We can study on the water cycle itself, on how and why it occurs. The most basic reasoning for the water cycle is to keep a constant supply of fresh water on Earth for the use of living organisms, but what is the deeper concept of the water cycle? By finding out the factors that affect the other parts of the water cycle, we will be able to combine the knowledge of the different factors and increase or decrease the speed of the water cycle altogether.