How To Reduce Heat Gain Through Windows

How to control heat gain through windows

Air conditioners are designed to cool a room. Windows are designed to let sunlight and air in - but an unfortunate side effect of most windows is that they also let a lot of heat in and out of a room. If you lot're getting an air conditioner, consider how the windows in your room will affect the air conditioner'south efficiency.

Thermal curtains can help reduce heat gain.

According to the Building Lawmaking of Australia (too called the BCA), windows are now legally required in all 'habitable' rooms, and their size must be equivalent to at to the lowest degree x% of the floor area. In some rooms, this will mean a lot of window space, which in plough volition mean a lot of opportunity for unwanted rut to enter the room.

Window orientation and glazing options

When it comes to selecting an air conditioning unit, window size and direction both need to be taken into account. Windows that are due west facing volition exist exposed to hot afternoon dominicus, and volition therefore allow more heat to enter the room than windows that face in other directions. Rooms with large west facing windows unremarkably require a larger capacity air conditioner than the same sized room with south facing windows.

Controlling the heat that comes through windows can make a big deviation to your needs. Some options to exercise then include installing double glazing (especially with depression-e glass), and using solar films. These systems aren't necessarily expensive, are unremarkably quite effective, and don't affect the amount of light coming into the room too desperately.

Awnings and external shading

Another (sometimes cheaper) way to command the heat that travels through windows is to installing awnings or other forms of external window shading. By preventing direct sunlight from hitting a window, these options offer a simple and effective manner to reduce the amount of heat through windows. External window shading is an important role of passive house design, and making sure that the amount of light isn't likewise badly reduced is a dandy manner to help keep heat at bay.

Defunction, blinds and internal shading

Heat gain and loss tin can also be controlled (to a degree) through the employ of blinds and defunction. In fact, the introduction of thermal curtains to an existing holding, or a new property that has east or west facing windows, is probably the cheapest and simplest fashion to control rut gain and oestrus loss - although it's not the almost effective. The best way to expect at thermal defunction is as another form of insulation. In a similar fashion to wall and ceiling insulation batts, thermal curtains also come with an R-value.

An R-value is the measurement used to figure out the insulation'southward thermal resistance, which shows how good of an insulator it is. The college the value, the better the insulator will be. Typically the thicker a cloth is, or the more than 'layers' a cloth has, means it is a better insulator and prevents more transfer of heat.

Tip

• Awnings and other means to shade windows from the outside are more than effective than defunction and blinds, because they foreclose oestrus from being transferred through window glass.

You lot Might Besides Similar

Source: https://build.com.au/how-control-heat-gain-through-windows

Posted by: wellerhatterouble1970.blogspot.com

Share this post