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  2. Minot train derailment - Wikipedia

    en.wikipedia.org/wiki/Minot_train_derailment

    The Minot train derailment occurred just west of Minot, North Dakota, United States, on January 18, 2002, when a Canadian Pacific Railway freight train derailed, spreading ammonia gas across the city, delaying rescue operations. The cause was found to be small fatigue cracks in the rails and joint bars, not detectable by the inspection routines ...

  3. Air conditioning - Wikipedia

    en.wikipedia.org/wiki/Air_conditioning

    Air conditioning, often abbreviated as A/C (US) ... The units went on sale in 1932 at US$10,000 to $50,000 (the equivalent of $200,000 to $1,100,000 in 2023.) ...

  4. Condenser (heat transfer) - Wikipedia

    en.wikipedia.org/wiki/Condenser_(heat_transfer)

    A condenser unit used in central air conditioning systems typically has a heat exchanger section to cool down and condense incoming refrigerant vapor into liquid, a compressor to raise the pressure of the refrigerant and move it along, and a fan for blowing outside air through the heat exchanger section to cool the refrigerant inside. A typical ...

  5. London Underground cooling - Wikipedia

    en.wikipedia.org/wiki/London_Underground_cooling

    Conventional air conditioning was initially ruled out on the deep lines because of the lack of space for equipment on trains and the problems of dispersing the waste heat these would generate. Different systems were proposed to cool Underground trains, including the use of large blocks of ice inside the train.

  6. List of defunct Canadian railways - Wikipedia

    en.wikipedia.org/wiki/List_of_defunct_Canadian...

    This line opened for traffic on July 21, 1836, although there are cases of animal-drawn mining tramways in Nova Scotia from the 18th century onward. Thousands of railways followed the C&SL and were given a charter by the federal or provincial governments, although in most cases these charters never resulted in an actual line being constructed.

  7. Condensate pump - Wikipedia

    en.wikipedia.org/wiki/Condensate_pump

    The output of small condensate pumps is usually routed to a sewer, plumbing drain, or the outside world via PVC plastic tubing (condensate drain line). In some locales, condensate water is not permitted to enter a sewer system and must be directed to the outside of the house, usually into the leader/gutter downspout system, or the stormwater ...