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lana
13-01-2006, 10:24 AM
Hi there,
Can anyone introduce an evaporator manufacturing company for freezing tunnels (-35°C room) with R22?
I need the required coil surface area with the capacity.
Appreciate any comment.
Cheers:)

D. Sergius
15-01-2006, 08:39 PM
What capacity of coil are you looking for? Is it a direct expansion or pumped liquid over-feed application?

Aerofreeze and Krack are a couple of manufacturers that build both.

lana
16-01-2006, 01:54 PM
What capacity of coil are you looking for? Is it a direct expansion or pumped liquid over-feed application?

Aerofreeze and Krack are a couple of manufacturers that build both.

Hi Sergius,
Thanks for the reply. I have checked the companies you mentioned but there is no catalogue available!!
I need a blast freezer evap. for R22 DX. The capacity is 20kW @ -40°C TD=5°C.
Cheers.:)

rrahan
26-01-2006, 01:01 PM
pls help me
Hello
who can help me with some documentation to make a refrigeration tunel/fast refrigeration, or a software(or just the formulas) for the calculation of refrigeration power
TNX

afeef
26-01-2006, 01:18 PM
hi lana

this is a good and famous company in industrial refrigeration
www.grasso-global.com
they do ice skatting feild in dubai (3 football stadum large)
thanks:D

rrahan
26-01-2006, 01:47 PM
i have one freezing tunnel with 12x 5.5 x 3.5 m (Lxlxh).
I have 3000 kg meat(pork/chicken/beef), polyuretan 150 mm insulation, i don't know how long is the procces.
What reffrigered power is required? i need -40°C in the tunnel , R404 or R134

cruzeiros
26-01-2006, 01:52 PM
salut rrahan ;)

give me your e-mail adress..maybe i can help you...and welcome to ref-eng

Peter_1
26-01-2006, 07:25 PM
i have one freezing tunnel with 12x 5.5 x 3.5 m (Lxlxh).
I have 3000 kg meat(pork/chicken/beef), polyuretan 150 mm insulation, i don't know how long is the procces.
What reffrigered power is required? i need -40°C in the tunnel , R404 or R134

You're missing or forgetting some very important things to consider:
3.000 kg doesn't say anything?
Available time for freezing? This is the most important factor for your project (will take at least half a day)
Entering temperature and desired temperature after freezing?
Cutted meat or carcasses?
In boxes or open in trolleys or on a belt?
If boxes, type of box?
Feed through tunnel (FIFO)?
-40°C with R134a:eek: :eek: :confused:
-40°C is evepaorting at -46°C to -48°C :eek: :D
For me 150 mm PU is not enough for -40°C inside.

Estimated capacity (I'm taking water, counts easier) of (3000 x 10 x 1) + (3000 x 85) + (3000 x 20 x 1)/10hours or 37 kW + 10 kw for the fans = +/- 45 to 50 kW or 50 HP.
Preferable with a pack.

Don't forget also that a freezing tunnel is not such an easy project as it seems on the first sight, especially if you don't have enough experience with it.

Tycho
27-01-2006, 01:00 AM
Hi Sergius,
Thanks for the reply. I have checked the companies you mentioned but there is no catalogue available!!
I need a blast freezer evap. for R22 DX. The capacity is 20kW @ -40°C TD=5°C.
Cheers.:)


dont know if you found what you were looking for, but anyways, Fincoil has a wide range of evaporators, we use them from time to time and They are pretty good quality.

http://www.fincoil.fi/products.html


-Cheers


Tycho

Mark Sanchez
28-01-2006, 09:33 PM
Lana,

Please email me directly @ msanchez@ams-pmt.com
I will forward your request to Krack / Evapco/ Frick-Imeco and Colmac.
These are all Industrial Evaporator manufacturers.
I deal with these people daily in th US.
They should all have websites that you can visit.

Many industrial coils are custom designed.

I am involved with IIAR / ASHRAE & RETA

Mark

Josip
31-01-2006, 02:13 AM
Hello, you can visit
http://www.guentner.de/

they also have a GPC calculator to download. Their products are very good, I'm working with them for a long time. From calculator you can choose DX evaporator and condenser.
From http://www.bitzer.de you can dowload software for compresor. I do believe that you are going to make a charging freezing tunnel (cold room) what is much easier than to make a good continuous freezing tunnel.
Anyhow, this is not a simple project and if you don't have a good experience ....do not start.
Best regards!
Josip

Renato RR
31-01-2006, 12:28 PM
Try with ECO and Alfa laval!

Renato

Peter_1
31-01-2006, 05:46 PM
All fine but what capacity he needs now?

Servicefrigo
31-01-2006, 07:24 PM
RRAHAN
Salut
What cooling time do you need?
I will try to help you