Cold air stays in - Just simple physics!

It is a Basic Fact That Cold Air is Heavier than Warm Air

Air falls Out

Whenever an Adande unit is opened the insulated tub moves out of the cabinet. Although there is a little spillage the majority of the cold air remains in the drawer with the food.

Cooled air is then very gently dropped into the drawer to bring the temperature back to the set point.

Door Units are Not Great for Your Food

Given the difference in density between the air in a fridge or freezer and that of the kitchen, it is no wonder then that the cold air ends up on the floor every time a door cabinet is opened.

Warm kitchen air rushes in replacing the lost cold air and bringing moisture, containing bacteria, which then condenses as it cools, falling like raindrops onto the food.

Conventional Drawers are Even Worse

Air falls Out Drawer

Unfortunately conventional drawer systems are worse than doors.

There is a syringe effect which drags the cold air out of the cabinet when the drawer is opened and pumps the warm kitchen air back in when it is pushed shut.

Damaged Vertical Seals Leak Cold Air

Even with doors or drawers shut any small cuts, tears, or food deposits on the seals can cause the constant loss of cold air.

Not only are the seals in Adande units horizontal but they are protected from damage and are guaranteed for two years.

The Maths

For the more technically minded the density (d) of the air depends on the temperature and pressure: d = M.p/R.T (in g/m3)

in which
M = (mean) molar mass of air = 28.8 g/mol
p = pressure in Pa
T = temperature in K
R = gasconstant= 8.3145 J/mol.K

Simply put, the air in a freezer cabinet at minus 20°C is about 20% more dense than warm kitchen air at 30°C and the air in a fridge at 5°C is about 10% more dense than warm kitchen air at 30°C