Clearcoil Cleaning of a Medium Sized Air Handling Unit

Clearwater undertook the cleaning of a frost coil on a medium sized roof top air handling unit at an international airport. This was to assist our client with a major energy saving initiative, ensure HVAC equipment was properly maintained, improve system performance and make financial savings for the client.

Prior to the clean the frost coil was visibly contaminated with dust and debris. This can restrict airflow through the coil, affecting energy efficiency.

Data of air flow and temperature measurements were taken from both sides of the coil pre and post cleaning works.

The coils and weather louvres were cleaned using manual vacuuming and jetting with compressed air, before the coils were chemically deep cleaned with our ClearCoil product. The product is specifically formulated to move grease and debris without causing significant damage to the coils themselves.

Following cleaning, the coils were visibly cleaner, as pictured to the right.

The result was a clean and well maintained system with increased energy transfer rates and less energy required to achieve the desired temperature settings. This also meant that there were significant cost savings for the customer.

Air velocity was measured at 2.69m/s before the clean and 5.7m/s afterwards. The inlet air temperature into the coil was 6.8 degrees before the coil and 5 degrees after the clean. Outlet air temperature was measured at 13 degrees before the coil and 11.9 degrees after the coil. Based on the fan efficiency, the area of the coil, the cost of electricity and the hours online per year, the Energy Saving for one year was Estimated at £3037.