Energy savings

Why dynamic solar shading: Energy savings

Energy savings through heat gain management

The windows in a façade are the weakest link in terms of energy transfer, both ways. Modern glass has developed in an impressive fashion but still - glass cannot offer the dynamic g, U and LT values needed to cater for the shifting needs during the year in order to optimize both indoor climate and energy performance.

The only way to solve this is an intelligent combination of some basic functions in the building. Dynamic solar shading, correct choice of glass type combined with presence controlled heating, cooling and light. Science has proven it since years and now the market is expressing demand for it. In terms of solar shading the "key to success" comes with how it is controlled.

Principles of Dynamic Insulation™

Dynamic Insulation™ works by positioning the shading devices on the façade in accordance with the need at any given time, day or season to manage the thermal exchange between the outside and inside of the building.

In accordance with the need at any given time, day or season...

Dynamic Insulation™ creates very useful and flexible g-value (SHGC coefficient) and U-values. This can only be obtained by using a properly programmed automation system.

The overall heat transfer coefficient (U-value) measures the rate of heat transfer through a window area; the lower the U-value, the better the insulation. To measure the performance of Dynamic Insulation™, U-values for the glazing and shading devices must be combined: single-glazing with a shading device can actually provide a U-value that is superior to double-glazing.  An example:

     1. Single glazing:  U=5,9

     2. Double glazing:   U=2,7

     3. Triple glazing:   U=1,8

     4. Double glazing with roller shutters: U<1,8

Smart dynamic solar shading brings several benefits

  • Allowing to “right size” installed HVAC equipment
  • Increased occupant thermal comfort
  • Improve U values by reducing heat loss
  • Allows for using less coated glass 
  • Significant reductions of heat gain 
  • Maximizes the use of natural daylight 
  • Reduced requirement/use of for artificial lighting

The solar heat gain coefficient

Use the free heat provided by the sun in a controlled manner!

sub

It is also essential to take advantage of the free heat that is provided by the sun during the colder season. The solar heat gain coefficient (g-value or SHGC) measures the solar energy transmittance through windows. The gtot gives the combined g value for a glass combined with solar shading.

  1. Double glazing :  g = 0,59
  2. Roller shutter :  gtot = 0,05 - 0,1
  3. Outside blinds :  gtot = 0,05 - 0,2
  4. Inside blinds :  gtot = 0,3 - 0,5

Contact us to learn more about the benefits of dynamic solar shading!

* mandatory fields
* mandatory fields