3 ms·
Another issue is that at pressures below one atmosphere, the system will suck in ambient air, causing condensation to collect inside your refrigeration circuit,
by brilee 4y ago
Another issue is that at pressures below one atmosphere, the system will suck in ambient air, causing condensation to collect inside your refrigeration circuit, which creates ice crystals, etc… nobody does that.
- londons_explore 4y agoPlenty of systems work below atmospheric pressure. For example, Fridge freezers most commonly use isobutane (R600a), and when operating with the freezer at -20C, the pressure will be half an atmosphere (ie. -0.5 bar below atmospheric). The systems are filled using a vacuum pump to ensure there is very little atmospheric air in them, and they also use a 'filter dryer', which is a chemical compound chosen to trap any remaining water and various other common contaminants.