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Home appliances are electrical/mechanical appliances which accomplish some household functions, such as cooking or cleaning.

Some types of brown goods were traditionally finished with or looked like wood or bakelite. This is now rather rare, but the name has stuck, even for goods that are unlikely ever to have been provided in a wooden case (e.g. camcorders). White goods were typically painted or enamelled white, and many of them still are. The addition of new items to these categories shows that the categories still serve a purpose in marketing.

This division is also noticeable in the service area of these kinds of products. Brown goods usually require high technical knowledge and skills (which get more complex with time, such as going from a soldering iron to a hot-air soldering station), while white goods need more practical skills and "brute force" to manipulate the devices and heavy tools required to repair them.

There is usually a problem with microwave ovens, because these sell alongside refrigerators and dishwashers, but microwave ovens contain complex electronic boards (the clock and controller) which white-good servicemen refuse to repair (as they don't have the training or tools required to do so). Some brands send whole boards for replacement, and some have them repaired by such technicians.Some types of brown goods were traditionally finished with or looked like wood or bakelite. This is now rather rare, but the name has stuck, even for goods that are unlikely ever to have been provided in a wooden case (e.g. camcorders). White goods were typically painted or enamelled white, and many of them still are. The addition of new items to these categories shows that the categories still serve a purpose in marketing.

This division is also noticeable in the service area of these kinds of products. Brown goods usually require high technical knowledge and skills (which get more complex with time, such as going from a soldering iron to a hot-air soldering station), while white goods need more practical skills and "brute force" to manipulate the devices and heavy tools required to repair them.

There is usually a problem with microwave ovens, because these sell alongside refrigerators and dishwashers, but microwave ovens contain complex electronic boards (the clock and controller) which white-good servicemen refuse to repair (as they don't have the training or tools required to do so). Some brands send whole boards for replacement, and some have them repaired by such technicians.
In the refrigeration cycle, a heat pump transfers heat from a lower-temperature heat source into a higher-temperature heat sink. Heat would naturally flow in the opposite direction. This is the most common type of air conditioning. A refrigerator works in much the same way, as it pumps the heat out of the interior into the room in which it stands.

This cycle takes advantage of the way phase changes work, where latent heat is released at a constant temperature during a liquid/gas phase change, and where varying the pressure of a pure substance also varies its condensation/boiling point.

The most common refrigeration cycle uses an electric motor to drive a compressor. In an automobile, the compressor is driven by a belt over a pulley, the belt being driven by the engine's crankshaft (similar to the driving of the pulleys for the alternator, power steering, etc.). Whether in a car or building, both use electric fan motors for air circulation. Since evaporation occurs when heat is absorbed, and condensation occurs when heat is released, air conditioners use a compressor to cause pressure changes between two compartments, and actively condense and pump a refrigerant around. A refrigerant is pumped into the cooled compartment (the evaporator coil), where the low pressure causes the refrigerant to evaporate into a vapor, taking heat with it. In the other compartment (the condenser), the refrigerant vapor is compressed and forced through another heat exchange coil, condensing into a liquid, rejecting the heat previously absorbed from the cooled space.


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