Because if you don't have a cooling tray could easily burn your work surface with a hot thing like chicken in a baking tray which is really hot so you could put the food on the try and put it to the side and wait for it to cool down
A use of a cooling tray. Is to cool whatever you have cooked,and so that it doesnt melt on to what you cooked it on,and the condesation of the heat will sometimes make it soggy.
The wire tray allows cooling from all sides, including from underneath.
Running a cooling tray off the battery will put an additional load on the battery causing it to run down faster
Laptops should be put on a "Cooling Tray" or "Cooling Pad" as most people call it. If you do not wish to invest in a "Cooling Tray/Pad", do not set your laptop on a bed or carpet during use. A laptop, without a "Cooling Tray/Pad" should be on a desk or table at all times, so there is good ventilation. Failure to have ventilation can cause problems within the laptops hard drive. (Over heating) With a "Cooling Tray/Pad", a laptop may be placed anywhere, as long as the vents have space to maintain air flow to prevent over heating.
Oh, yeah. Buy a cooling tray.
sieve tray
A bar tray is used to serve tea
supply tray is used in served for food and other food
It is a tray that you use when you dissect something.
as long there is a bread pan on top of the baking tray, yes bead can be baked on a baking tray
a dutch serving tray is used for serving food
The popularity of the USB cooling tray is do to their ease of use. You do not have to hunt around for a wall outlet to plug into; the outlet is right on the laptop. You just plug it in an turn it on
Air cooling ,hydrogen gas cooling ,water cooling