Graphs and tables of trials of Cool Blue Box
The selection of graphs in this document is representative of the trail carried out by the Grimsby Institute into the temperature performance of the Cool Blue box. All fish temperatures are internal fish temperatures with a blue trace the air temperature in the chill.
Authors- William Davies and Robert Giddings
Trials Project Director - Prof Mike Dillon
Date- 30/08/07
Summary
Trials to look at the effectiveness of Cool Blue boxes were carried out during a trial period beginning 25th June 2007. The aims of the trials are to investigate the factors involved in the successful operation of the Cool Blue Box, along an agreed supply chain. The trials are looking at the storage of farmed Atlantic salmon (Salmo salar) in test conditions. The trials were run at Food Dynamo, part of the Humber Institute of Food and Fisheries, Grimsby in collaboration with Cool Blue Box Company. Total weight of fish tested during phase 1 of trials was 2400kgs.
The above graph (Trial 6) highlights that the Cool Blue boxes performance is comparable to polystyrene.
The Cooling ability of the Cool Blue box is shown in the above graph. The red line shows polystyrene boxes used as a comparison.
The above graph 4.3 shows the cooling benefits of the Cool Blue box. The trial was run with one kg and without any ice and shows a benefit using a little ice. This one kg of ice is still a lot less than the 7kg typically used in polystyrene boxes.
The cooling effect of the Cool Blue box with/without ice and a polystyrene box is shown above. The fish cools quickly from ~7ºC to 1ºC. The final temperatures of a Cool Blue box was lower than Polystyrene.
This trial was done with non frozen lids. It was done with two set ups in to give preliminary results before phase two (Marine Harvest - Young's without frozen lids). Two box profiles were used, 18kg fish and 7kg ice and 23kg fish 5kg ice.
| Label |
Box and Ice Amount |
Average Final Internal Fish Temperature |
Number of Results Measured |
Number of Boxes Involved in the Trials |
| 1 |
CB no ice |
1.140 |
16 |
26 |
| 2 |
CB ice |
0.802 |
14 |
26 |
| 3 |
PS 1kg |
1.712 |
1 |
4 |
| 4 |
PS 6kg |
0.431 |
7 |
16 |
|
Phase 2
In the first full supply chain trial Cool Blue box performed better than polystyrene in final temperatures. There was 6 fish in the 3-4kg range with 7kg of ice added. This was despite an inefficient chiller unit in the lorry from Marine Harvest to Bellshill distribution centre.
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