1 Peer-reviewed (refereed or scholarly) journals-Articles are written by experts and are reviewed by several other experts in the field before the article is published in the journal in order to insure the article's quality.
One key component to an efficient walk-in cooler is its insulation. A standard walk-in cooler will have between 2 and 4 inches of Styrofoam insulation within its walls and a rubber sealing gasket around its door to help ensure that it is both airtight and well-insulated against the temperature of the air outside.
Types of Refrigeration Systems Used in Walk-Ins. Refrigeration systems consist of a condensing unit and an evaporation coil. The condensing unit is located outside the walk-in and the evaporator is located inside the walk-in. The compressor compresses gas to a liquid.