
doi: 10.14264/312255
Rising environmental concerns has led to research on reducing energy usage for refrigerated containers when transporting perishable food. Most containers are made of stainless steel which is an excellent conductor of heat and thus increases the energy usage for refrigeration of perishable food. This project investigates the heat transfer and reflectivity of different industrial paint products, colours and additives. Colours are more important in this project compared to paint products and additives because consumers like to have colours which sometimes match their company logo and thus like to have more colour choices. A preliminary experiment was carried out for ‘matt black’ and ‘glossy silver’ to determine how much light is reflected, thus the amount of heat absorbed. The results of this experiment conclude that there are significant differences in heat reflection between silver and matt black. It can be observed from Figure 7.1 that the surface temperature differences for the panels were about 25oC. Therefore, with this result, it justified that black does have low reflectivity as the surface temperature of the black panel was more 100 degree C. Hence, it led to the second part of the colour experiment which included more colour choices. The second part of the colour experiment proved that white had the highest reflectivity even compared with glossy silver and other primary colours. But none of the colours have lower reflectivity compared to matt black. It was also observed that when the reflectivity is high, the temperature inside the insulated box was lower as it can be concluded that when the reflectivity is high, heat transfer is low. With these results, further research is essential to further increase the reflectivity, recommendation for adding glass beads into the paint to increase surface area was proposed.
Cooling effects, Paint, 0904 Chemical Engineering, School of Engineering
Cooling effects, Paint, 0904 Chemical Engineering, School of Engineering
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