The first law of thermodynamics teaches us that heat can not be created or destroyed, but it can be moved. The refrigeration cycle leverages this law by “moving” heat from an area or object where it is unwanted to somewhere that it will “do no harm”. In a refrigeration cycle, the condenser is the heat exchanger responsible […]
Ammonia Hops Into Fall in this week’s edition of the Ammonia Week in Review… 1 Hospitalized After Ammonia Leak at Country Fresh Dairy in Wyoming – The Wyoming Fire Department was assisted on scene by the Grand Rapids Fire Department HAZMAT team, Kent County Emergency Management and the Michigan Department of Environment, Great Lakes and Energy. […keep reading] Ammonia […]
Unfortunately, the compression process imparts heat into the refrigerant being compressed. This heat is called the “heat of compression” and is directly related to the compression ratio. A decrease in suction pressure or an increase in discharge pressure will result in a higher theoretical discharge temperature. High discharge temperatures increase friction and cause lubricating oils to break […]
Most refrigeration systems are subject to variable system loads caused by weather and product load fluctuations. For this reason, refrigeration systems must be capable of operating at “part load”. Engineers and plant operators achieve this, in part, by utilizing capacity control in compressors. In reciprocating compressors, capacity control is accomplished by what is called “cylinder […]
Close Call in this week’s edition of the Ammonia Week in Review… Anhydrous-Ammonia Truck Overturns in Devils Lake; No Leak Reported – Authorities diverted traffic as a precaution while crews arranged to transfer the fertilizer to another truck and remove the overturned semi. […keep reading] Sioux City Hospital Conducts Drill for Ammonia Leak Response After Recent Hinton Scare […]
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