ECO-LOGICal Innovations

Winter Position

The Effect

· Sun energy transmission of 70%

· Invisible sunrays are turned into radiating warmth

· Window increases the room temperature even with diffused sunlight

· The entire surface of the window radiates warmth into the room (oven effect)

· Intense winter sun may even warm it over 100 degrees Fahrenheit.

The  critical elements

1: White glass

2: SZR with argon gas

3: Low-E-coat

4: Floatglass

5: Foil

6: Green glass

 

	Winter Position		Summer Position
Air temperature Fahrenheit	Outside = 32	Inside = 68	Outside = 32	Inside = 68
Sun energy (Watt per square meter)	Temp. outside window pane Fahrenheit	Temp. inside window pane Fahrenheit	Temp. outside window pane Fahrenheit	Temp. inside window pane Fahrenheit
0	34.34	61.34	69.62	68.36
100*	35.96	70.34	74.66	69.62
300	37.94	85.46	84.2	71.96
500	40.28	98.60	98.6	74.3
700	42.62	110.84	102.92	77

 

* Example:  Already at 100 watts of solar energy in the winter time (cloudy sky) and at outside temperature of 32 degrees Fahrenheit, the inside window pane heats up to over 70 degrees.  As a result a thermal barrier is created and no energy is lost through the window, effectively reaching a U rating of zero.