When I was a child I used to have a lot of curiosity while using a Thermos (or vacuum flask). It was always like magic that it used to keep hot things hot and cold things cold all the time. It neither had fire in it to keep things hot nor ice to keep things cool. Later in high school we learnt the basics of heat transfer, and that was when the theory behind the thermos became clear to me. After so many years, when I think of it, a lot of it can be applied to saving
We all love to have windows in our house. They infuse beauty and warmth of natural light and brighten every small and little space alike. They improve the ambience of the room and make us feel better. Unfortunately they also let a lot of heat exchange from outside the room. During summers, heat through the window can increase the temperature inside and in winters it can let the heat through the room escape impacting units consumed (of electricity) for air conditioner
Thermal insulation is a very important aspect which has to be thought about when putting an air conditioner or heater in a room. Significant amount of heat is exchanged with the outside environment through walls and windows and the best way to improve air conditioner or heater efficiency is by putting right thermal insulation in the room. Double glazed glass or Insulated glass is the best way to protect heat loss through windows.