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Thread: Subcooling
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18-04-2008, 03:42 AM #51
Re: Subcooling
Last edited by Gary; 18-04-2008 at 03:45 AM.
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18-04-2008, 08:34 AM #52
Re: Subcooling
Thanks Gary i'll give that a go
By the way i checked all my thermistors and thermometers yesterday so i know there right.
CB
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20-04-2008, 04:42 AM #53
Re: Subcooling
Hi Gary,
where can I buy your books? Do you have web site? You may like to answer via email to colin@reeson.net
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20-04-2008, 05:23 AM #54
Re: Subcooling
Click on my name (to the right of my picture), then click on "Visit Gary's Homepage".
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05-05-2008, 08:38 AM #55
Re: Subcooling
hi can any one explain me about the different process take place when refrigerant flows through a condenser with a picture?
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05-05-2008, 12:24 PM #56
Re: Subcooling
Hi Gary
Would you be kind enough to explain how I would be able to partially close part of a condenser off, as per your explanation earlier in this thread.
sparrow.Always easy on the eye.
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05-05-2008, 12:49 PM #57
Re: Subcooling
chilly blue
.
Remember, just because you
don’t have bubbles in your sight
glass doesn’t mean you have subcooled
liquid at the inlet to your
expansion valve!
Measure it using your gauge,
thermometer and comparator
Service Matters. This one is
dedicated to subcooling and a
clever device that can
measure minute levels of
flash gas, an early indicator of
loss of subcooling.
Often in the winter
months you hear the term
‘over condensing’. This is a
myth, as you cannot over
condense a refrigerant. The
problems related to low ambient
are often due to logging of
refrigerant in the condenser
leading to low liquid levels in the
receiver.
The Gaslok is a clever device
which can tell the state of the refrigerant
in the liquid line. It
does not require invasive installation
- it is just clamped around
the outside of the pipe. It passes
and minutely analyses ultra sonic
signal through the pipe and
refrigerant.
It can detect even a very small
amount of flash gas in the liquid
and thus give a good warning
that the system is not
performing efficiently.
Cambridge
Refrigeration Technology.
These tests showed that the
Gaslok can detect down to 5%
gas in the liquid line - you would
barely be able to see these few
bubbles in a liquid line sight
glass.
The device could be used in
two ways:
To continuously monitor a system
and to provide an alarm in
the event of subcooling disappearing;
As a commissioning tool, for example
to check that a system is
adequately charged.
Gaslok is currently being field
trialled by A B Technology on its
own test rig. Further field trials
are planned.
The information produced
will be evaluated to determine
how the device can be used as a
useful indicator of system
problems.
Whatever the results of the
trial, we know that this is a useful
commissioning and diagnosis
tool because you don’t usually
get a sight glass where you need
it - at the expansion valve.
Service Matters is produced for the IOR Service Engineers Section by Cool Concerns Ltd
If you have any feedback please contact Stephen Benton
Email: steve@coolconcerns.co.uk Phone & Fax: 01323 768768Always easy on the eye.
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05-05-2008, 09:48 PM #58
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11-09-2008, 05:22 PM #59
Re: Subcooling
Hi all
What effects on subcooling would you expirence if
1. the systems condenser was oversized.
2. the systems condenser was undersized
CB
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