What kinf of pipes are used for coldstores ?

[eng_ab]

Hi guys;

Please can u tell me what kind of pipes r commonly used in coldstores ? and what standard sizes r used ?

[chemi-cool]

Pipes for what in a cold store, water?, refrigerants?
Be more specific, please.

Chemi

[chillyhamster]

round ones

[Peter_1]

We mostly uses spiral duct for R404a and flexible duct (isolated of course) for R134a.
Till 2 kW you need a duct of 5 inch, from then 8 inch.
If used for freezer application, isolate the duct very good.
A good tip, you can use the inner side of the duct as a cable tray, fits all inside it and it's good looking.
Use a good quality duct-tape, especially with R404a because that gas becomes real cold.

[Brian_UK]

...snip...Use a good quality duct-tape, especially with R404a because that gas becomes real cold.

LOL Peter, you test my rib cage

[coolkev]

generally copper exept for R717 with is steel. Either hard or soft drawn depending on size and application. Soft usually only availible up to 7/8". although over 5/8" is a pain to work.The pipe must be ref. grade which is clean, dehydrated and always capped both ends Standard sizes 1/8", 3/16",1/4",3/8",1/2",5/8",some 3/4",7/8",1 1/8", 1 3/8", 1 5/8".These are most commen, there is of course bigger but im not very familar with these, one of the industrial techs or larger A/C boys will know these I havent done multi storey work since 1989 Dont be put of by the sarcasam of others, bit of a fridgey trait.

[eng_ab]

Appreciate ur help guys, especially coolkev. What about pipes used for ammonia and R22 ? Do u know good pipe manufacturers ? What good certificates are generally achieved to make the manufactured pipe approved from most coldstores ?

[rbartlett]

ammonia will be steel
R22 is copper only

standards for refrigerant quailty pipe are

ASTM B 280 and EN 12735-1

http://www.metalagencies.com/copper_alloy_tubes.htm

best bet is to employ us as consultants to oversee the project.

cheers

richard

[eng_ab]

Thanx 4 ur help rbartlett.
Do u work in metalagencies or u do consulting individually ?

[rbartlett]

check our website

http://www.fridgetech.com

cheers

richard

[eng_ab]

richard, did fridgetech handled some projects in the middle east ?
I am impressed by ur customers. Especially the cafebar, that was neat. Where is the location of this cafebar ? Maybe one day i can visit it .

[rbartlett]

As yet we haven't handled any middle east projects as Fridgetech (although personally I have in my previous company in Saudi btw.)

However fridgetech has had experience in Nigeria for Mobil and Daewoo

Check the bottom of this page...

http://fridgetech.com/subcontracting/


The cafe bar was a project in hinckley ;-)

http://www.hinckley-online.co.uk/about_h.shtml


Cheers

Richard

[eng_ab]

Cool where did u work at saudi arabia ?

[eng_ab]

When speaking of steel pipe used for R717. Do u refer to carbon steel or something different ?

[rbartlett]

Cool where did u work at saudi arabia ?

On the Prince Sultan Air Base
Al-Kharj

cheers

richard