Refrigerators

Today, refrigerators are more of a necessity than a luxury. With needs for preservation, manufacturing, construction and comfort, refrigeration can be applied mainly to three different applications - domestic, commercial, and industrial refrigeration. Domestic refrigerators are used at home or offices to preserve food and keep drinks cool. Commercial refrigerators tend to be used at hotels, restaurants, stores, and large businesses. These facilities store, display, process, and dispense their products in refrigerators. Industrial refrigeration usually deals with manufacturing processes such as heat treatment, processing of food and textiles, photographic material and construction engineering. Applications such as ice plants, large food plants, oil refineries, and chemical plants are typically preserved or manufactured in industrial refrigerators. Often mistaken, many people believe that refrigerators lower original temperatures to cool the items in the fridge. Refrigerators actually contain an evaporating gas called a 'refrigerant'; this gas draws the heat away making the items, leaving them much cooler. A refrigerator typically includes two storage compartments, a frozen compartment and another compartment that requires refrigeration. Surrounded by heat-exchanging pipes and powered by a compressor, pure ammonia runs through the entire system. While the ammonia evaporates, the gas absorbs more heat, making the temperature rise. The cool ammonia then draws heat from the warmer items in the fridge but not as much from the freezer. After the gas is drawn back into the compressor, the entire cycle is run again. With numerous refrigerator manufactures such as Whirlpool, LG, Samsung and many more, several types of refrigerators are available in various sizes, colors, and designs. Portable refrigerators are also popular and are used in home bars, RVs, etc to store items in smaller quantities.