jesse hull on thu 3 nov 05
Ron said:
"Perhaps an air exchanger system would be the best and
cheapest in the
end. They use the exhaust air to heat or cool fresh
air coming in."
Ron, could you explain that last sentence more? I'm
in the process of building a new studio and tightening
up a vent system I've designed.
~jesse.
Michael Wendt on thu 3 nov 05
Jesse,
the device Ron is referring to is an air to air heat exchanger somewhat
similar to the heat exchanger in a furnace. Exhaust air passes over the
inner (or outer) surface of the exchanger and the incoming air passes over
the other.
As you might expect, the efficiency is less than 100% so there is additional
cost associated with heating (or cooling) the makeup air and the surfaces on
the heat exchanger must be kept very clean since dirt will act like an
insulator and slow heat transfer dramatically. They also cost very little
money to buy and operate. See one at:
http://www.smarthome.com/3033.html
Before you spend the money on an air cleaner or heat exchanger system,
compare the total cost of operation and maintenance to the crossflow
ventilation scheme Sam Yancy described. Most of the year, if outside
temperatures are within a few degrees of desired, it might be far cheaper to
invest in box fans placed in the windows on one side and leave the windows
open on the other if the outdoor air is fairly clean.
Institutions have other rules they have to meet but air to air heat
exchangers are great for them as well.
Regards,
Michael Wendt
Wendt Pottery
2729 Clearwater Ave
Lewiston, Idaho 83501
USA
wendtpot@lewiston.com
www.wendtpottery.com
Ron Roy on fri 4 nov 05
Hi Jesse,
Air exchangers are quite common now - if you build a "tight" house - like
R2000 - you need to expel stale air and bring in fresh.
An exchanger takes the temperature of the inside air you are sending out
and transfers it to the incoming air - so if you are heating you don't lose
the heat - or if you are cooling you don't lose the that.
That good enough?
RR
>Ron said:
>"Perhaps an air exchanger system would be the best and
>cheapest in the
>end. They use the exhaust air to heat or cool fresh
>air coming in."
>
>
>Ron, could you explain that last sentence more? I'm
>in the process of building a new studio and tightening
>up a vent system I've designed.
>
>~jesse.
>
>______________________________________________________________________________
>Send postings to clayart@lsv.ceramics.org
>
>You may look at the archives for the list or change your subscription
>settings from http://www.ceramics.org/clayart/
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>Moderator of the list is Mel Jacobson who may be reached at melpots@pclink.com.
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513
jesse hull on fri 4 nov 05
Hi Jesse,
Air exchangers are quite common now - if you build a
"tight" house -
like R2000 - you need to expel stale air and bring in
fresh.
An exchanger takes the temperature of the inside air
you are sending
out and transfers it to the incoming air - so if you
are heating you don't
lose the heat - or if you are cooling you don't lose
the that.
That good enough?
RR
>>Good enough Ron... and I've just heard that my
Parent's friends have one in their new home. I'm
gonna check it out when I visit for the holidays.
They did mention something about a filter being used
in the exhaust part of the system as well as the
intake. I could only think that it would be necessary
to protect whatever is used (eg coils, conductive
metal sheet, etc) from dust accumulation, thus
insulating it and preventing the transfer of heat.
Since the small micron dust that is so dangerous to us
would quickly build up in a heat transfer device,
you're right back into the same problem of supplying
HEPA filters. Of course, if the coils are readily
accessible and easily wiped or hosed clean, then it's
a great solution. I'm eager to find out!
I've been interested in heat transfer systems for
awhile now. I'd just never heard of it as an "air
exchanger".
I designed a greenhouse for a friend a few years ago
which employed borosilicate glass coils to cool the
lights (extract the heat from around the bulbs). The
heated water is pumped through the coils and then
through a radiator equipped with an in-line fan. The
air from that fan blew from the greenhouse, through
insulated ducting, and into the main heater duct of
his house. What was once an expensive hobby saved him
about 30-40% on his heating costs per year.
Speaking of expensive hobbies:
Although one could never suggest heating your home
with the air vented from even an electric kiln due to
toxic vapors and monoxide, the idea of an exchanger/
transfer system would be a neat concept. The amount
of heat that is cast off (wasted) from even the most
well insulated kiln is too much to not think about.
jesse hull on fri 4 nov 05
Micheal,
I like the smarthome model alot, but it doesn't look
that easy to clean. That lends me to believe that the
exhaust would have to employ a filter, leaving the
same problem.
As Ron stated, the most efficient way of removing
airborne dust is by exhausting it completely... if
there was a system that could exhange the heat/ cold
efficiently and be cleaned easily, it would be
invaluable to us clay-eaters.
~jesse.
steve graber on sat 5 nov 05
"Torit" is the name behind industrial air filters & they supply filters down to the smaller studio room size (from as big as your house to shop vacuum size). you'll note these outside industrial buildings. they are THE source for idustrial air control. they also can discuss your set up & make recomendations to you.
i've used these at work filtering out dusts down to the micron levels. HEPA & smaller. some are just *regular* filters, some include water trap designs.
where i currently work they are using Torit's to draw the air from a large fiberglassing operation for a room some 5,000' long by 5,000' wide by 12 foot tall.
http://www.donaldson.com/en/industrialair/
see ya
steve
jesse hull wrote:Hi Jesse,
Air exchangers are quite common now - if you build a
"tight" house -
like R2000 - you need to expel stale air and bring in
fresh.
An exchanger takes the temperature of the inside air
you are sending
out and transfers it to the incoming air - so if you
are heating you don't
lose the heat - or if you are cooling you don't lose
the that.
That good enough?
RR
>>Good enough Ron... and I've just heard that my
Parent's friends have one in their new home. I'm
gonna check it out when I visit for the holidays.
They did mention something about a filter being used
in the exhaust part of the system as well as the
intake. I could only think that it would be necessary
to protect whatever is used (eg coils, conductive
metal sheet, etc) from dust accumulation, thus
insulating it and preventing the transfer of heat.
Since the small micron dust that is so dangerous to us
would quickly build up in a heat transfer device,
you're right back into the same problem of supplying
HEPA filters. Of course, if the coils are readily
accessible and easily wiped or hosed clean, then it's
a great solution. I'm eager to find out!
I've been interested in heat transfer systems for
awhile now. I'd just never heard of it as an "air
exchanger".
I designed a greenhouse for a friend a few years ago
which employed borosilicate glass coils to cool the
lights (extract the heat from around the bulbs). The
heated water is pumped through the coils and then
through a radiator equipped with an in-line fan. The
air from that fan blew from the greenhouse, through
insulated ducting, and into the main heater duct of
his house. What was once an expensive hobby saved him
about 30-40% on his heating costs per year.
Speaking of expensive hobbies:
Although one could never suggest heating your home
with the air vented from even an electric kiln due to
toxic vapors and monoxide, the idea of an exchanger/
transfer system would be a neat concept. The amount
of heat that is cast off (wasted) from even the most
well insulated kiln is too much to not think about.
______________________________________________________________________________
Send postings to clayart@lsv.ceramics.org
You may look at the archives for the list or change your subscription
settings from http://www.ceramics.org/clayart/
Moderator of the list is Mel Jacobson who may be reached at melpots@pclink.com.
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