Contrary to what many people suppose, a refrigerator does not produce coldness. Cold and heat, at a basic level, represent different levels of energy, with warmer substances simply exhibiting more in the way of particular motion. What a refrigerator does, then, is to pump some of that heat energy away from the space that it keeps cool. Instead of producing coolness, a refrigerator gets rid of heat, transporting it out of one place and into another.

That turns out to be fairly difficult to do. In fact, virtually every usage of energy to do work results in the production of heat, with heat energy being by far the most common sign of the inefficiency that is necessarily a part of any such process. In other words, while refrigerators are condemned, like all devices, to being less than perfectly efficient, they must account for the fact that this inherent efficiency works precisely against their basic purpose.

In practice, it turns out to be relatively easy to deal with this problem. Refrigerators are invariably well insulated, because this is the single best way of ensuring that the work they successfully do is not wasted unnecessarily. This insulation, it turns out, serves a two-fold purpose: In addition to keeping the coolness within them contained, it also helps to keep the refrigerator's own production of waste heat from intruding within.

In fact, this basic principle lies at the heart of most successful refrigerator designs. In addition to engineers needing to take this fact into account, companies like SRA Commercial Refrigeration regularly do so when they perform repairs, as well. Keeping in mind the ways that refrigerators work and handle the transfer of heat underlies virtually every common repair task.

Some of the most common problems with Commercial Refrigeration Perth businesses encounter, in fact, amount to little more than the most obvious implications of these facts. For example, a commercial refrigerator which exhibits a sudden drop in efficiency quite frequently displays problems in the interface between the cool and hot sides of the system.

A visit from an SRA technician arranged through, then, might turn up an issue with the hoses that normally allow for the clean exhaust of waste heat. If one of these avenues becomes even partially blocked, the heat that builds up within can drastically impact the efficiency of the system as a whole. Many times, then, even a simple cleaning of such an outlet can restore efficiency in a dramatic way.