[Greenbuilding] vent waste heat recovery

[David Lewis]

To make plumbing waste stacks work and for water/sewage to flow in pipe,
air must be drawn into the piping, which is the purpose of the "open to
the air" vent stacks. To terminate all vents indoors on the roof could
create problems. Also, although a technicality, terminating indoors is
against all Plumbing Codes.

 

David L Lewis

Clayco

Phone: 314-422-1020

Computer Fax: 314-890-4938

lewisd at claycorp.com

www.claycorp.com

 

-----Original Message-----
From: greenbuilding-bounces at listserv.repp.org
[mailto:greenbuilding-bounces at listserv.repp.org] On Behalf Of Michael K.
Lough
Sent: Monday, July 09, 2007 12:56 PM
To: greenbuilding at listserv.repp.org
Subject: [Greenbuilding] vent waste heat recovery

 

vent waste heat recovery

 

A condo unit with vent stacks fed by hot water all day

and every day of  must produce a rising heat effect

.What if the vents were clustered within a greenhouse

on the flat roof and they actually vented to the

inside of a greenhouse (perhaps just in Winter 8^) ) 

 

 I wonder if the vent "draught" from such a level of

human activity in the condo below would heat a space

sufficiently to eliminate freezing through the winter

in the green house before exiting  through the roof of

a "growing chamber"...This is all in line with urban

green roof strategies and heat from stacks in multi

unit buildings should probably be looked at as a

resource to be saved or used in some way, on the roof.

 

 

I would think a monitoring project might be a good

start. I'm not sure of the technicalities but

measuring the air temp at the opening in February

might be a good start and the air flow pressure

upwards. 

 

It comes down to whether to save the heat from the

vent casings ( pricy) or from the openings of the

vents?

 

Michael Lough

 

 

 

 

 

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