🔍 Key Concepts

• heat of compression in air compressors • difference between intercoolers and aftercoolers • how water jackets remove heat from machinery

💭 Think About

• Think about when the air is actually being compressed inside the cylinders or stages: which device is in direct contact with the cylinder walls? • Which coolers are placed between stages, and which are placed after the final discharge? How does each one affect the temperature of the compressed air? • Ask yourself: are all these methods removing the same type of heat at the same time, or do some mainly cool the machine itself rather than the air mass being delivered?

✅ Before You Answer

• Verify which devices directly cool the compressed air flowing through the system, not just the metal parts of the compressor. • Check whether intercoolers act between stages, aftercoolers act after final discharge, and water jackets cool the cylinder walls. • Confirm whether the question is asking about "compressed air" being cooled, or any part of the compression process being cooled.