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shills33
21-10-2007, 01:49 PM
Hi, I am currently studing Refrigeration and was wondering what capacity would be required to reduce 20 tonnes of product from -12 C to -26C in 4 hours if the product specfic heat below freezing is 2.1 kJ/KgK? the cold store is 30,000m3.

Thanks

taz24
21-10-2007, 01:51 PM
Hi, I am currently studing Refrigeration and was wondering what capacity would be required to reduce 20 tonnes of product from -12 C to -26C in 4 hours if the product specfic heat below freezing is 2.1 kJ/KgK? the cold store is 30,000m3.

Thanks


Would this be homework by chance? :D

You work it out then submit your findings and then maybe people will help you with your reasoning.

taz.

shills33
21-10-2007, 01:58 PM
is there a site that could help with my calculations for this
Thanks

Bones74
02-11-2007, 03:45 AM
Hi, I am currently studing Refrigeration and was wondering what capacity would be required to reduce 20 tonnes of product from -12 C to -26C in 4 hours if the product specfic heat below freezing is 2.1 kJ/KgK? the cold store is 30,000m3.

Thanks

Hi, It's in the modern refrigeration manual.
specific heat x weight x amount of heat you are trying to pull out of your product. That is the start then you need to calculate the time period and any heat loss. Doors, etc.:cool: