The difference between direct cooling and air cooling:

1andDirect-cooled refrigerated cabinet

The natural convection from the evaporator surface at low temperature reduces the interior temperature of the box, but the temperature is not uniform. It is more energy-saving, with larger effective volume per unit volume. The advantage of direct cooling technology is low manufacturing cost, good fresh-keeping effect, and low power consumption, but non-drawer refrigerators sometimes require manual defrosting. Direct cooling types consume less electricity, have low noise, low price, and preserve refrigerated food; however, they are slower and the temperature uniformity is slightly worse. They are mainly focused on the Chinese and European markets.

2andAir-cooled refrigerated cabinet

The refrigerator with air-cooling technology does not require defrosting and remains clean and fresh. Cold air is forced into the storage space through the air ducts to create a circular flow, ensuring uniform temperature. However, its drawback is that the air-cooling technology is more expensive and consumes slightly more electricity.";Food is easy to dry and dehydrate, suitable for use in humid areas. The power consumption is higher than that of direct-cooling models, and under the same volume, the effective volume is small. The air-cooling type has a fast cooling speed and no frost.(Automatic defrosting")The refrigerators have good food preservation and temperature uniformity; however, they have high power consumption, high noise levels, and high prices. They are mainly sold in the markets of the United States, Japan, South Korea, and the southern part of China.