When the refrigeration cycle was first developed, natural compounds were the only available refrigerants. Ammonia, carbon dioxide, and even sulfur dioxide were readily available and had useful thermodynamic properties. These refrigerants were great choices because they were easy to manufacture, readily available, and inexpensive to purchase. Unfortunately, due to the toxicity and flammability of these […]
Any refrigeration professional must understand the most common unit used in refrigeration, the “ton of refrigeration”. To properly explain what a “ton” is in a refrigeration context, studying refrigeration history is helpful. When the refrigeration vapor compression cycle was first invented, the most common application of a refrigeration system was making blocks of ice. Once […]
Ammonia Vanishes in this week’s edition of the Ammonia Week in Review… Firefighters Respond to Possible Ammonia Leak, No Injuries – L.A. County firefighters responded to a call about a possible ammonia leak at a building on Avenue Stanford in the Valencia Industrial Center Thursday evening, but were unable to determine whether there was a leak. […keep reading] […]
When a substance changes state from a liquid to a vapor, the process occurs at a constant temperature. When this occurs in a refrigeration system, it is said that the refrigerant is “saturated”. For water, experiments have proven that saturation, or boiling, occurs at 212ºF at 14.7 psia, which is atmospheric pressure. However, if someone were […]
“Saturation” is a term used to describe a substance that is at its boiling point. Water, for example, is said to be saturated when its temperature is 212ºF at sea level. The 212ºF water may be a liquid, a vapor, or a mixture of the two. When a substance is saturated, heat added or removed […]
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