Freezing tunnel evaporators

[lana]

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]

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]

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]

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]

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

[rrahan]

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]

salut rrahan

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

[Peter_1]

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
-40°C is evepaorting at -46°C to -48°C
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]

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]

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]

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]

Try with ECO and Alfa laval!

Renato

[Peter_1]

All fine but what capacity he needs now?

[Servicefrigo]

RRAHAN
Salut
What cooling time do you need?
I will try to help you