Big Green: White roof water temp runoff?

[Heather Walters]

Maybe I'm missing something, but if it is raining (to feed the cistern)
the roof will not be at its maximum temperature and the plants will not
require irrigation for a while.

 

So the water should not be used for a while and would have a chance to
cool off even if it was hot...  

 

I would imagine the cistern design would be more important.  Could you
put a temp sensor in the cistern and not irrigate when the temperature
is more than X degrees, that may force night time irrigation which is
better for plant health and water use (less evaporation) anyway...

 

 

Heather Walters , LEED AP
Doty and Miller Architects 



 

 

From: biggreen-bounces at lists.biggreen.org
[mailto:biggreen-bounces at lists.biggreen.org] On Behalf Of John E. Beeson
Sent: Thursday, May 22, 2008 9:04 AM
To: Barrie Moore
Cc: biggreen at lists.biggreen.org
Subject: RE: Big Green: White roof water temp runoff?

 

My hands are tied.  I'm thankful to at least get the white roof and to
get the water from the roof to feed a cistern for irrigation.  But now,
I have to make sure the water temperature isn't dangerous to plants
during the summer.

QUINN EVANS | ARCHITECTS 
John E. Beeson, LEED AP 
d 734 926 0425

________________________________

From: Barrie Moore [mailto:merlon at gn.apc.org] 

	Why are you interested in temperature and not kiloWatts ?  Why
have you got a white roof ? Why is the water not in a pipe ?

	 

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