How Window Film Saves Energy

Glass without Film

Glass without Panorama Film

Glass with Film

Glass with Panorama Film

Panorama window film reflects significant solar energy, while absorbing another portion of the energy. The result is that the amount of solar radiation transmitted inside the room is considerably less. Specs will vary depending on the Panorama window film selected.

The movement or transfer of heat from a region of higher temperature to one of cooler temperature is called heat transfer. The transfer of heat always flows from hot to cold. No heat will transfer if there is no difference in temperature.

There are three types of heat transfer: Radiation, Conduction, and Convection. For window film, radiation is the most important method of heat transfer because it moves infrared waves. This is why we refer to solar energy as solar radiation.

Solar energy through a window is transferred or transmitted by infrared waves. Radiant energy is converted to heat when it strikes people or objects. If you block the transfer of this energy you keep it from turning into heat because it never strikes an object. Window film interrupts the transfer of this energy by reflecting the energy back.

Transmission is basically the percentage of Solar energy (UV + Visible Light + Near Infrared) that can passes through a window. Reflection is the ratio of solar energy reflected back to the source, expressed as a percentage. Absorption is the percentage of solar energy absorbed to that of the total solar energy.

With solar window film installed on the inside of a window, the proportions are changed dramatically, with reflected energy and absorption increasing. This corresponds to a reduction in solar heat transmitted inside the room or the automobile. The properties of the window film dramatically influence how and in what way transmission, reflection and absorption change.

How lowering the temperature saves energy

Only a few degrees in temperature reduction can have up to a 25% reduction in cooling costs, due to the laws of thermodynamics. It requires considerable amounts of energy to remove heat from a room through air conditioning. During peak summer times in the middle of the day, loads on air conditioning systems can be reduced enough to turn off entire units or to install a less costly system.

Our Panorama Film products are manufactured to the highest standards in the industry by Solar-Gard, a world leader in film technologies. These films offer the very best in clarity, thermal properties, and color, and they come with the best warranties available.

When heat is transferred from a region of higher temperature to one of lower temperature, the difference in the two temperatures will attempt to move to zero. This is not possible when heat is transferred from the outside into your home through your glass windows. The transfer of heat always moves from a hot area to a cool area with a corresponding rise in temperature in the cool area. Because of this principle, during warm months the inside of your house heats up from the transfer of heat through your windows.

There are three types of heat transfer; radiation, conduction, and convection. When considering window films, radiation if the most important heat transfer process because it moves heat by way of infrared waves. This radiant energy is transmitted through a window and then converted to heat when it strikes an object, such as your couch. The temperature of your couch then rises as does the temperature in the room. If this radiant energy is blocked, it is prevented from converting to heat, and objects remain cool. Window films interrupt the flow of this radiation by reflecting the energy back out into the atmosphere. Your rooms stay cool and nice.

With Panorama film installed on the inside of your window, the percentage of solar energy transferred into your room is significantly reduced, and the percentage of energy reflected is greatly increased. Much less solar energy is then transferred into your rooms. The properties of the specific window film installed on your windows dramatically influence how and in what way transmission, reflection, and absorption of energy changes. Our technical staff is highly skilled in helping you select the proper film for your particular application.