Maureen:
Low e
glass does cut down the amount of solar radiation passing through the glass for
passive solar heating. However it
also cuts down on the heat loss through the glass in winter and the heat gain
through the glass in summer.
In most
cases low e glass will permit a net gain in solar heating for the winter. I have low e glass on my south windows
and on a sunny winter day the heat gain is considerable even when it is only 10
or 20 degrees F outside.
One way to
satisfy oneself about how much net gain or loss you will have is to run a
computer simulation. Some software
is available online. If you do not
have access to a simulation program or do not feel you have the knowledge to
run one yourself, contact the window company and see if they can run one for
your climate.
Cheers,
Ralph
Bicknese
-----Original
Message-----
From: Richard Averett
[mailto:averettr@norwich.net]
Sent: Monday, December 31, 2001
9:59 AM
To: greenbuilding@crest.org
Subject: [GBlist] Low E glass
We are
building a house in Upstate New York,(42 North latitude). Does anyone
have an opinion on whether Low-E glass on the South side will interfer
with solar gain in the winter? Thanks.
Happy New
Year!
Maureen
