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Thread: Blood freezing
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20-10-2009, 11:49 AM #1
Blood freezing
Help! I need to calculate coldroom for blood freezing, can't find physical characteristics (laten heat of fusion, freezing temperature) someone can help me?
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20-10-2009, 12:36 PM #2
Re: Blood freezing
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
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20-10-2009, 12:49 PM #3
Re: Blood freezing
What additives I need? and what is the freezing point of this....
Thanks
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20-10-2009, 07:37 PM #4
Re: Blood freezing
Some description here...
http://en.wikipedia.org/wiki/Blood_bankBrian - Newton Abbot, Devon, UK
Retired March 2015
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20-10-2009, 08:52 PM #5
Re: Blood freezing
as far as I can rememeber you can't freeze red blood cells without addition of additives because they rupture
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20-10-2009, 08:59 PM #6
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21-10-2009, 06:29 AM #7
Re: Blood freezing
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.
CheersEven Einstein Asked Questions
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21-10-2009, 07:29 AM #8
Re: Blood freezing
Ok sent it, igor.baranovskij@rolvika.lt , thanks.
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21-10-2009, 08:03 AM #9
Re: Blood freezing
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.
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21-10-2009, 08:26 AM #10
Re: Blood freezing
HI,
As I said, usually plasma is frozen very quickly by other means than cold room.
If you want to calculate use water properties.
CheersEven Einstein Asked Questions
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21-10-2009, 10:09 AM #11
Thank You very much.
Last edited by chillin out; 03-11-2009 at 04:00 PM.
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21-10-2009, 12:19 PM #12
Re: Blood freezing
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
mmm to beer or not to beer...........lets drink breakfast
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13-01-2010, 03:33 PM #13
Re: Blood freezing
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.
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13-01-2010, 04:33 PM #14
Re: Blood freezing
Удельная теплоемкость крови, 3,9 кДж/(кг* °k)=0,93 кал/(г* °С).
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08-03-2010, 03:30 PM #15
Re: Blood freezing
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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10-03-2010, 06:43 AM #16
Re: Blood freezing
hii guys
in blood bank freezing Plasma only @ -65 -80C
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