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 […]
Most compressors are configured with an oil separator downstream of the compressor. An oil separator is a vessel that is specially designed to “separate” any oil in the discharge vapor and return it back to the compressor where it is wanted. Oil that escapes the separator is unwanted and results in fouling on heat exchange surfaces and […]
Ammonia Diluted in this week’s edition of the Ammonia Week in Review… Ammonia Leak at Williamson Cold Storage Prompts Emergency Response – Firefighters used portable master streams and an aerial waterway from a ladder truck, operating on a fog pattern to help knock the ammonia out of the air. […keep reading] Dozens Suffer Ammonia from Gas Leak, Police […]
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