Blood freezing

[Rolvika LT]

Help! I need to calculate coldroom for blood freezing, can't find physical characteristics (laten heat of fusion, freezing temperature) someone can help me?

[Samwitch]

Is this for storage of plasma?

as far as I can rememeber you can't freeze red blood cells without addition of additives because they rupture

[Rolvika LT]

What additives I need? and what is the freezing point of this....
Thanks

[Brian_UK]

Some description here...

http://en.wikipedia.org/wiki/Blood_bank

[chemi-cool]

as far as I can rememeber you can't freeze red blood cells without addition of additives because they rupture


If you mix equally a pint of blood with a pint of bitter it should be OK.;)

[mad fridgie]

If you mix equally a pint of blood with a pint of bitter it should be OK.;)
Totally disagree, whisky or vodka, much better solution:D
A body has 8 pints of blood then 8 pints of bitter, s*** my bladder aint that big

[lana]

Hi there,

I think it is for plasma storage.
Plasma comes in the cold room only for storage. It has been frozen by another system like -60°C alcohol tub.

If you want to calculate assume water properties.
Your capacity will be higher than required but it is a good assumption.

I have a power point presentation about plasma. I don't know if it will help you but if you want I can mail it to you.


Cheers

[Rolvika LT]

Hi there,

I think it is for plasma storage.
Plasma comes in the cold room only for storage. It has been frozen by another system like -60°C alcohol tub.

If you want to calculate assume water properties.
Your capacity will be higher than required but it is a good assumption.

I have a power point presentation about plasma. I don't know if it will help you but if you want I can mail it to you.


Cheers


Ok sent it, igor.baranovskij@rolvika.lt , thanks.

[Rolvika LT]

Thanks, found some interesting things. But I need calculate coldroom capacity for plasma with conditions: coldroom temp. -35C, storage quantity 8000 kg, daily product loading about 200l/day, frizeeng from ~20C to freezing point (I dont know exactly ?C), per 6-8 hours. And i don't know: Specific heat above freezing, Specific heat below freezing, Latent heat of fusion this are missing parameters for calculate capacity by myself.

[lana]

HI,
As I said, usually plasma is frozen very quickly by other means than cold room.
If you want to calculate use water properties.

Cheers

[Rolvika LT]

Thank You very much.

[lowcool]

brian,chemi and madfridge have got the answer,me i prefer stolichnya and schweppes bitter lemon on a hot day or any other day not that it matters

[grizwold50]

best way to freeze plasma bags to to build an horizontal contact shock freezer, design for -50 then store the plasma at an minimum of -30, it is possible ive had service training on them in luxemburg.

[Genady]

Удельная теплоемкость крови, 3,9 кДж/(кг* °k)=0,93 кал/(г* °С).

[tom.smart71]

I also agreed with Grizwold.
To freeze plasma bags you need to construct an horizontal contact shock freezer, design for -50 C then store the plasma at an minimum of -30 C that will definately help for your plasma storage.
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[shmo]

hii guys

in blood bank freezing Plasma only @ -65 -80C