Because during the cooling cycle, it get's very cold. When it comes in contact with warm air it condenses. This causes it to sweat like a cold drink on your patio in the summer. This reduces efficiency of the system
No, wireless printers do not need a phone line. Wireless printers can be purchased at any large retail stores such as Walmart.Wireless printers do not need a phone line connected to it as long as you have WiFi.
To keep heat out/in and the noise down.
The pips in a steam heating system need to be insulated to prevent condensation. Condensation can lead to mold and or freezing of the steam pipes in the winter.
what happyen to your dad in the moive
Gas water heaters are internally insulated, and need air flow to burn the gas off safely and correctly. There is no need to insulate them, in fact it would be very wrong to do so. Simply put pipe insulation on the exposed copper. Home depot has it in the plumbing section. Electric water heaters are different, and you can insulate them with a fitted sleeve sold at plumbing part shops, or most large hardware stores. be sure to insulate the copper as well.
because it is a safer way of cookingThat isn't an answer. I know the safety device is a glass or transparent insulated door, but I am still trying to find out why they need one.
As camels live in the desert, they need a lot of water to survive. Camels have insulated bodies so as to store water and survive the hot weather in the desert
With great care. For a short distance/time people use specially made plastic bags and air. Sometimes oxygen is added and also the bag may be placed in an insulated or heated container. Large fish need large bags etc.
Yes, PEX pipe does not necessarily need to be insulated for proper installation and performance, but adding insulation can help improve energy efficiency and prevent heat loss in certain applications.
Yes, PEX tubing should be insulated for proper installation and performance to prevent heat loss and maintain efficiency in heating systems.
Soldering the wires together
Some items are double insulated, thus they do not require earthing.