View Full Version : Blast chiller sizing

09-05-2014, 05:09 PM
Can someone help me sizing a system for chilling food product. I normally work in the process heating side not refrigeration.

I'm looking to chill sliced Onions loaded on trays from 100C to 5C in 90mins, the product is on trays supported on wheeled racks. Product weight is 768Kg and tray and rack weight total is 350Kg what size Air blast and main chiller unit would i need to achieve this.

I would appreciate it if anybody can help or point me in the right direction so i can learn about the art of refrigeration.

Many thanks


10-05-2014, 10:36 PM
(95 x 768) + (95 x 350) x 1.16 / (90/60) /1.000 = +/- 82 kW. This is an estimate. Proper airflow is as important as the capacity

22-05-2014, 02:46 PM
Many thanks for your assistance, you are a star.

Thank you again..

23-05-2014, 04:25 AM
this is products loads do not forget other loads

23-05-2014, 07:02 PM
@mbc, such as? I took water to cool, so there's enough margin. All the rest of the loads (wall, fans, lights, peoples,...)is extremely small compared to product load.