Air Fin Cooler (AFC) cleaning involves removing debris like dust, sand, or insects from the finned tube bundles to maintain thermal efficiency, typically using chemical spraying (15–25% concentration), foam washing, or high-pressure air cleaning. Proper maintenance requires shutting down fans and using low-pressure, non-corrosive chemicals to avoid damaging aluminum fins.
Air Fin Coolers (AFC), also referred to as Air-Cooled Heat Exchangers (ACHE), are critical heat rejection systems widely used in refineries, petrochemical plants, power plants, marine workshops, and industrial facilities across the Middle East. Their performance is directly linked to the cleanliness of finned tube surfaces, which are highly susceptible to fouling from airborne contaminants, oil vapors, salts, and industrial pollutants.
Why AFC Cleaning is Critical?
In regions like the UAE, Saudi Arabia, and Oman, AFC units operate in extreme environmental conditions-dust storms, high salinity, and hydrocarbon exposure. These conditions accelerate fouling and scaling on fin surfaces.
- Fouling acts as an insulating layer, drastically reducing heat transfer efficiency
- Deposits such as dust, oil, soot, and salts block airflow and increase energy consumption
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Severe fouling leads to:
- Higher outlet temperatures
- Increased fan load and power consumption
- Premature corrosion and equipment failure
Regular chemical cleaning is therefore not optional-it is a core maintenance requirement.
AFC Cleaning Challenges in Workshops & Field Maintenance
Workshop and on-site AFC cleaning operations must address:
- Delicate aluminum fins prone to corrosion and bending
- Complex geometry (dense fin spacing)
- Mixed fouling: hydrocarbon deposits + dust + salts
- Need for low-foam, non-corrosive, biodegradable chemicals
- Safety requirements (low odor, non-toxic formulations)
Improper cleaning methods-especially aggressive alkaline or high-pressure cleaning—can damage fins or cause long-term corrosion issues .
RXSOL Range of AFC Cleaning Chemicals by DUBI CHEM
DUBI CHEM Marine International offers a specialized range of RXSOL AFC Cleaning Chemicals, engineered for both workshop and on-site maintenance operations across the Middle East.
1. RXSOL Heavy Foam Cleaner
Application: Severe fouling / oil & grease-loaded AFC units
- High-adhesion foam penetrates deep into fin bundles
- Emulsifies heavy hydrocarbons, sludge, and sticky contaminants
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Ideal for:
- Refineries
- Marine engine room coolers
- Petrochemical plants
Technical Advantage: Foam-based cleaning enables deep penetration into inaccessible areas, effectively dissolving deposits without mechanical damage
2. RXSOL Light Foam Cleaner
Application: Routine maintenance / light to moderate fouling
- Controlled foam generation for easy rinsing
- Safe on aluminum, copper, and alloys
- Maintains airflow efficiency and prevents buildup
Best Use: Preventive maintenance schedules in workshops and HVAC/AFC service units
3. RXSOL Air Cooler Cleaner
Application: General-purpose AFC and fin-fan cooler cleaning
- Water-based, non-corrosive formulation
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Removes:
- Dust
- Salt deposits
- Organic and inorganic fouling
- Suitable for both online and offline cleaning
Key Benefit: Restores heat transfer efficiency without affecting metallurgy
4. RXSOL Fore & Aft Cleaner
Application: Multi-purpose industrial degreasing + AFC cleaning
- Strong emulsifier for oil, grease, and carbon deposits
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Used in:
- Ship engine room coolers
- Offshore platforms
- Industrial maintenance workshops
Advantage: Dual-use chemical reduces inventory complexity for maintenance teams
Cleaning Methods Using RXSOL Chemicals
1. Foam Cleaning (Preferred in Middle East)
- Apply foam cleaner across fin surfaces
- Allow dwell time for penetration
- Low-pressure rinse
✔ Deep cleaning
✔ Minimal fin damage
✔ Ideal for heavy fouling
2. Spray Cleaning (Workshop Maintenance)
- Diluted chemical sprayed using low-pressure systems
- Suitable for routine cleaning
✔ Quick and economical
✔ Suitable for service contractors
3. Online Cleaning (Operational Plants)
- Cleaning without shutdown
- Improves efficiency while maintaining production
✔ No downtime
✔ Immediate performance recovery
Key Benefits of Using DUBI CHEM RXSOL AFC Chemicals
- Enhanced Heat Transfer Efficiency
- Reduced Energy Consumption (fan load reduction)
- Extended Equipment Life
- Lower Maintenance Costs
- Safe for Aluminum Fins & Alloys
- Environmentally Compatible Formulations
Clean AFC systems can even allow partial fan shutdown, resulting in direct energy savings and improved process efficiency .
Target Industries in UAE & Middle East
DUBI CHEM AFC cleaning solutions are widely applicable in:
- Oil & Gas Refineries
- Petrochemical Plants
- Power Plants
- Marine & Offshore Industry
- HVAC & Industrial Cooling Systems
- Maintenance Workshops & Service Contractors
Best Practices for AFC Chemical Cleaning
- Always identify fouling type before selecting chemical
- Use low-pressure application to avoid fin damage
- Ensure proper rinsing to avoid residue buildup
- Prefer neutral or mildly alkaline formulations for aluminum compatibility
- Follow PPE and safety protocols during cleaning
In the harsh climatic and industrial conditions of the Middle East, AFC units demand specialized chemical cleaning solutions to maintain performance and reliability. DUBI CHEM Marine International, through its RXSOL product range-Heavy Foam Cleaner, Light Foam Cleaner, Air Cooler Cleaner, and Fore & Aft-offers a comprehensive, field-proven solution for workshop and on-site AFC maintenance.
By integrating the right chemical with the correct cleaning methodology, operators can achieve maximum efficiency, reduced downtime, and extended equipment life, ensuring optimal plant performance in demanding environments.
For AFC CLeaning chemicals, feel free to reach out to DUBI CHEM at support@dubichem.com
