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lana
12-10-2009, 07:27 AM
Dear all,

I am sure that this thread is very basic for the HC experts but since I have no experience in this field, I would like to start this thread for myself and others who are like me :eek:.

As HCs are growing in our industry therefore, I think it is something we need to learn.

Can anyone explain :

1- Major difference with DX system with HCFC,...
2- Design differences
3- Equipment differences
4- Safety issues

And anything you think a beginner must know.

Again forgive me if this is very simple for you guys.

Appreciate your help.
Cheers

Brian_UK
12-10-2009, 11:39 PM
Hi Lane, don't work with HCs myself but this BOC tech file might be of interest...

http://www.bocindustrial.co.uk/bocindustrial/attachments/refrigerants/Technical_Info.pdf

US Iceman
13-10-2009, 04:49 AM
Working with hydrocarbons should be based on several design assumptions to meet.



The fluids are refrigerant grade. Various lighter components can separate and act as non-condensable vapor.
The electrical systems/wiring are per code (usually explosion-proof.
The proper oil is selected. Hydrocarbons tend to thin out the oils and result in loss of adequate lubrication/viscosity.
The proper materials of construction are used. Non-sparking on external rotating devices (fans, couplings, etc.)

Other than these, it's just a refrigeration system.;)

lana
13-10-2009, 05:14 AM
Thanks everybody for your reply.

Any quantity restriction for residential applications? US And Europe.

Cheers

Brian_UK
13-10-2009, 09:04 PM
Any quantity restriction for residential applications? US And Europe.

Cheers
Section 5 of the above BOC document details some of that.

Quality
13-10-2009, 09:21 PM
Thanks everybody for your reply.

Any quantity restriction for residential applications? US And Europe.

Cheers

Check out BS EN 378 2008

Not to sure which part but I am sure refrigerant charge is restriced based on occupancy of the building

lana
14-10-2009, 08:09 AM
Thanks everybody,

I found the restriction.

Cheers