Compressor Cooler
Compressor Cooler: Efficiency and Dryness in Compressed Air Systems
The process of air compression releases a high amount of heat due to the laws of thermodynamics. Compressor cooler units are critical components that cool this high-temperature compressed air coming out of the compressor, making it suitable for the system, increasing energy efficiency, and extending the lifespan of the installation. The cooling solutions we develop at Fintherm do not just cool the air; they also facilitate the condensation of the moisture within it, thereby reducing the workload of air dryers and pneumatic equipment. In compressor systems, there are two primary cooling points: Inter-stage cooling (Intercooler) and post-discharge cooling (Aftercooler). In both stages, a correctly designed coil structure is the most important factor in reducing operating costs.Types of Compressor Coolers and Operating Principles
Fintherm offers two main cooling technologies based on compressor capacity and site conditions:- Air-Cooled Compressor Coolers: While compressed air passes through finned tube coils, forced airflow provided by a fan absorbs the heat. This is the most common and easiest-to-maintain system used in electric compressors.
- Water-Cooled Compressor Coolers: The heat of the air is removed via water circulating inside a heat exchanger (shell and tube). This provides maximum efficiency in very high-capacity compressors and facilities where the ambient temperature is extremely high.
Technical Specifications and Material Quality
During the compressor cooler manufacturing process, the most durable materials are selected, taking into account the high mechanical stress created by compressed air and corrosive condensate:- Tube Options: Copper for high thermal conductivity, stainless steel for corrosion resistance, or carbon steel tubes for economic solutions.
- Fin Technology: Aluminum or copper fins that maximize surface area. Special fin structures resistant to the high discharge temperatures of oil-free compressors.
- High Pressure Durability: Leak-proof production ranging from the standard 7 bar to high-pressure stages of 40 bar and above.
- Corrugated (Grooved) Tubes: Advanced technology applications that induce turbulence in the airflow within the tube, increasing cooling performance by up to 30%.
Why Fintherm Compressor Coolers?
A correct cooling system increases efficiency in the compressor room in the following ways:- Moisture Separation: Water vapor in the cooled air turns into liquid. This prevents rusting in air lines and failures of pneumatic valves.
- Energy Savings: Inter-stage cooling (intercooler) allows the air to be compressed with less power in the next stage, thereby reducing electricity consumption.
- Compact Design: Compact coil batteries with high surface areas that fit into tight compressor cabinets.
- Low Pressure Drop: Thanks to the internal tube design, it offers minimum resistance to airflow, protecting the compressor’s discharge pressure.
Project Process
01.
Needs Analysis and Technical Evaluation
02.
Engineering Design and Calculations
03.
Production Planning and Material Selection
04.
Manufacturing and Assembly Process
05.
Testing, Inspection and Approval Processes
06.
Delivery, Support and After-Sales Services
Frequently Asked Questions
01.
What are compressor coolers (aftercoolers and intercoolers) and what are the differences between them?
Compressor coolers are heat exchangers that remove heat from the air heated during compression. Intercoolers in multi-stage compressors cool the air between two compression stages, allowing more air to be compressed with less energy in the next stage. Aftercoolers cool the air before it is sent to the system, allowing the moisture within it to condense.
02.
Why does cooling compressed air cause dryness?
Hot air can hold significantly more water vapor than cold air. When the hot air exiting the compressor is cooled in the aftercooler, the amount of moisture it can hold rapidly decreases, and the excess moisture turns into liquid water (condensate). This liquid water is discharged through a water separator, reducing the moisture load going into the air line by 70-80%.
03.
Why is "Krochille" (internally grooved) tube technology used in compressor coolers?
Air is a fluid with a low heat transfer coefficient. In a straight pipe, air flows laminarly (quietly), and the air near the center passes through without cooling. The spiral grooves inside the corrugated pipes constantly rotate the air, creating turbulence. This ensures that all air molecules come into contact with the pipe walls, increasing cooling efficiency by up to 30% compared to straight pipes.
04.
How to choose between air-cooled and water-cooled aftercoolers?
Air-cooled systems are preferred in standard facilities due to their ease of installation and low maintenance costs. Water-cooled systems, on the other hand, are preferred for maximum performance in facilities such as foundries where the ambient temperature is above 40°C, or in very high-capacity (central) compressor stations where air cooling is insufficient.
05.
What kind of damage can neglecting aftercooler maintenance cause to the system?
A poorly maintained chiller cannot cool the air sufficiently. This causes water vapor to enter the air dryer hot, exceeding its capacity. As a result, water accumulates in the piping, pneumatic valves rust, and moisture-related quality defects occur in the final product (paint shops, food packaging, etc.).
