Ammonia Swirls in this week’s edition of the Ammonia Week in Review… Cold Storage Facility in New Bedford Evacuated After Tier 2 Ammonia Leak – According to the New Bedford Fire Department, Engine 1, Engine 6, Ladder 1, Unit 2, Hazmat 1, Inspector 2, and Chief 2 responded to the scene. […keep reading] Firefighters Respond to Ammonia Leak […]
Just as the second law of thermodynamics states, there must be a temperature difference for heat exchange to occur, so there must be a pressure difference for fluid flow to occur. Because of friction, as a fluid moves through a pipe, it will lose some pressure, which results in a ΔP. ‘Δ’ (pronounced “Delta”) is […]
The ideal vapor compression cycle assumes that pure refrigerant is being used, such as ammonia. Unfortunately, in the “real world,” noncondensable gases can find their way into a system. A “noncondensable gas” is an undesired foreign gas that is in the system. It travels through the cycle with the refrigerant, but it does not assist […]
“Compression ratio”, which is the ratio of the absolute discharge pressure to the absolute suction pressure, is an important concept for a refrigeration professional. Compressors are limited in the pressure differential that they can impose on a vapor. Screw compressors have the highest potential and can achieve compression ratios as high as twenty to one. […]
Anyone that has operated a refrigeration system knows that a significant amount of energy is required to run a compressor. “Heat” and “energy” are measured using the same units, and much of the electrical energy required by the compressor is transformed into heat energy in the refrigerant vapor. Think about it this way. When any […]
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