What is convection current and its relation to curtains/pelmets?
Convection currents are the result of differential heating of air. Lighter (less dense), warm air rises while heavier (more dense) cool air sinks.
The combination of pelmet and curtain eliminates the warm air inside being cooled down by the window (or in other words it stops the convection current). As shown in the diagram below.
What curtains are energy efficient?
• Curtains (often called heavy drapes) that are thick, have a lining, touch the floor, have no gaps around the edges and have pelmets are the most energy efficient. • Without a pelmet, hot air rises to the top of the curtain, touches the cold glass ...
Curtains vs blinds?
Heavy lined drapes and pelmets are the most energy efficient.
How do pelmets and heavy drapes help keep the house at a comfortable temperature during summer and winter?
In winter, without a pelmet, hot air rises to the top of the curtain, touches the cold glass of the window, causing the hot air to cool down. This cooled air (which is heavier than warmed air) then drops behind and underneath the curtain entering the ...
How much do pelmets cost?
You can get pelmets from around $65 https://www.bunnings.com.au/cowdroy-white-aluminium-pelmet-set_p3980049 https://www.mydirectblinds.com.au/product-category/pelmets/ https://ecomasterstore.com.au/search?type=product&q=pelmet
Window films vs heavy curtains or blinds?
Window Film • Window film is typically more affordable than blinds and other window treatments including curtains and drapes. • It’s an extremely energy efficient solution. It rejects up to 78% of the sun’s heat, eliminating hot spots and heat ...