Thermal Properties
The graph to the right shows the temperature rise within a cargo of butter during three controlled trials in the Cambridge Refrigeration Technology (CRT) heat chamber. When the effects of daytime temperature rise was simulated over a four day period. The tests were ended when an increase of +8ºC were reached.
Factors Influencing Product Temperature
Rate of heat loss/gain will vary dependent on the temperature difference between product and ambient during transit.
- Container colour – lighter colours will reduce solar gain. A white roof may
- reduce the solar gain by up to 30%.
- Container position and exposure on desk/below deck/ in a stack.
- “Cargo hold” temperatures.
- Wind chill factors.
- Correct installation of Thermoliner
- Product loading temperature.
- Product packaging.
- Transit time.
It is strongly recommended that a trial is carried out over a short period and this is extended if the results are successful.
Thermal Efficiency Information
(W/mk) Kcal/hr/Celsius
Standard 4mm 0.042 0.036
Super 7mm 0.031 0.031
Test method BS 4745 1990
Test conditions 20+/-2C 65+/-2%rh