CHARGED AIR COOLED HEAT EXCHANGER
The tubes which carry the process fluid may be manufactured easily with carbon steel or stainless steel with aluminium high fins to maximize the heat transfer. Airstream can be generated with the use of induced or forced draft fans. Depending on the application fan can be direct or gearbox coupled.
Air-cooled heat exchangers can be utilized for process cooling either stand-alone or in the combination of an air-cooled condenser and air & water-cooled heat exchanger where the process needs to be cooled to a lower temperature. In the air-cooled type heat exchanger process fluid is passed through tubes. Tube with fins can be installed in different passes and circulation movements based on the property of process fluid. Air is circulated to accelerate heat transfer. For air circulation forced and induced type of fan can be installed for the process cooler.
Functions
Air -Water – Oil cooling for diesel engines, transformers and compressors.
WORKING PRINCIPLE
✓ Higher noise in comparison to the cooling water system.
✓ The installation area needs to be properly ventilated.
✓ Higher Size of heat exchanger.
✓ Cooling can be done above 4 Degree C of dry-bulb temperature.
✓ Not suitable for low-temperature cooling application
✓ Increases compressor power consumption in refrigeration application reduced power in power plant etc.
APPLICATIONS
✓ Gas coolers (H2,N2,O2 etc)
✓ Process Heating & Cooling
✓ Waste Heat Recovery
✓ Sand Driers
✓ Dehumidifiers
✓ Electric Rotating Machine Coolers
✓ HVAC
✓ Air cooled Steam condensers for turbines
✓ Economizers
✓ Condensers
