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  • Ammonia Pressure Measurement using Thermal Flash Protection (.pdf)
    Situation: Ammonia offers refrigeration pump and compressor manufacturers an improved efficiency over Freon based systems. However, the thermodynamic behavior of ammonia is very different from Freon. When the refrigeration pump turns on, the ammonia temperature rapidly changes from 100°F to -70°F
  • The refrigerator revolution
    . For example, Michael Farady, in the early 1800s, liquefied ammonia to cause cooling. In 1889 and 1890, warm winters created natural-ice shortages that accelerated the use of mechanical refrigeration. Also in the 19th century, much effort was made to find a suitable gas to undergo compression and provide