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A mini-fridge-bar is a small private snack and beverage bar, that is defined as a fridge with a capacity of less than , often found in high-priced Western-style hotel rooms. Typically, a minibar comes in the form of a counter and small absorption refrigerator stocked with a precise inventory. The room's guests can take a beverage or snack at any time during their stay. The bar is commonly stocked with small bottles of alcoholic beverages, juice, and soft drinks. It may also include candy, cookies, crackers, and other small snacks. Some hotels offer non-food items, such as socks, toiletries, and condoms. Prices are generally very high compared to similar items purchased from a store, because the guest is paying for the convenience of immediate access and also the upkeep of the bar. Prices vary, but it is not uncommon for one can of non-alcoholic beverage to cost between $4–$10. Some mini-bars use infrared or other automated methods of recording purchases. These detect the removal of items, even if the items are not consumed. This is done to prevent loss of product, theft and lost revenue. The world's first mini-bar was introduced at the Hong Kong Hilton Hotel by manager Robert Arnold in 1974〔http://www.hk-magazine.com/city-living/column/ask-mr-know-it-all-what-history-hotel-minibar/〕 In the months following its introduction in-room drink sales skyrocketed 500%, and the Hong Kong Hilton's overall annual revenue was boosted by 5%. The following year (1975) The Hilton group rolled out the mini-bar concept across all its hotels.〔http://priceonomics.com/the-rise-and-fall-of-the-hotel-mini-bar/〕 == From absorption cooling unit to compressor == Typically the minibar cooling unit was different from standard refrigerators, using absorption technology. An Italian company was the first manufacturer to install a compressor mini-refrigerator in the (NASA ) Space Shuttle in 1982. In 2012 the first A+++ class compressor minibar was produced. A compressor refrigeration unit, in addition to a timer and a eutectic plate, allow saving more energy, compared to a traditional absorption minibar. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「minibar」の詳細全文を読む スポンサード リンク
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