Can anyone think of a reason an old condenser and fan from a commercial air
con unit wouldn't be suitable as a hot air blower using hot water from a
conventional heating system?

AJH

andrew wrote:
Can anyone think of a reason an old condenser and fan from a commercial air
con unit wouldn't be suitable as a hot air blower using hot water from a
conventional heating system?

AJH
Depends if you can get a high enough flow rate of hot water through it.
I would expect the resistance to flow compared with the rest of your
system to be too high for it to work.

Bob

On Thu, 02 Jun 2011 21:38:31 +0100, andrew
wrote:


Can anyone think of a reason an old condenser and fan from a commercial air
con unit wouldn't be suitable as a hot air blower using hot water from a
conventional heating system?

Susceptibility to corrosion?

On Jun 3, 2:46*pm, Peter Parry wrote:
On Thu, 02 Jun 2011 21:38:31 +0100, andrew
wrote:



Can anyone think of a reason an old condenser and fan from a commercial air
con unit wouldn't be suitable as a hot air blower using hot water from a
conventional heating system?

Susceptibility to corrosion? *

If you can cut and break out the pipe half way, you can run 2 pipes in
parallel, improving flow somewhat. Corrosion is another matter.
Bleeding is easily dealt with. Is it worth doing?


NT

In article ,
Peter Parry writes:
On Thu, 02 Jun 2011 21:38:31 +0100, andrew
wrote:


Can anyone think of a reason an old condenser and fan from a commercial air
con unit wouldn't be suitable as a hot air blower using hot water from a
conventional heating system?

Susceptibility to corrosion?

They're usually (if not always) copper, so much less likely
to corrode than a standard radiator, I would have thought.

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]

Tabby wrote:

Is it worth doing?

Dunno but I need a heat sink and this one already has a 240V blower
attached, my alternative is a lorry rad but that would need a hefty 24V
supply for the fan. If it works it can heat the workshop.

Power isn't a problem I have 150kW to spare.

AJH

Peter Parry wrote:

On Thu, 02 Jun 2011 21:38:31 +0100, andrew
wrote:


Can anyone think of a reason an old condenser and fan from a commercial
air con unit wouldn't be suitable as a hot air blower using hot water from
a conventional heating system?

Susceptibility to corrosion?

I can used fernox or antifreeze to sort that can't I? Heat eachanger in
boiler is steel.

AJH

On Jun 3, 7:05*pm, andrew wrote:
Tabby wrote:
Is it worth doing?

Dunno but I need a heat sink and this one already has a 240V blower
attached, my alternative is a lorry rad but that would need a hefty 24V
supply for the fan. If it works it can heat the workshop.

Power isn't a problem I have 150kW to spare.

AJH

If you did go for the 24v fan, you could run it off much lower
voltage. Vehicle fans are pretty frantic at rated voltage. Given
Andrew's point about it being copper, and given either enough flow as
is, or more by parallelling pipes, it does sound doable. Maybe you
could add a sludge trap on the rad inlet, to avoid the rad clogging.


NT

On Fri, 3 Jun 2011 17:17:49 +0000 (UTC),
(Andrew Gabriel) wrote:


They're usually (if not always) copper, so much less likely
to corrode than a standard radiator, I would have thought.

I've seen a few which were aluminium alloy. I used the (aluminium)
condenser from a dehumidifier coupled to an old beer cooler to keep a
large fridge with a failed refrigeration unit cool and that certainly
had corrosion problems.