- +36 30 411 3455
- info@humanex-tech.com
Online finned-tube cleaning with NPJ dry technology — no water, no aggressive chemicals, no shutdown. The cooler returns to near-factory capacity, and fan energy demand drops by 15–20%.
The same finned tube before and after cleaning. Drag the slider to see what a bare-metal surface means — on request, we verify the efficiency gain with a measurement report.
Request a sample report →
We remove deposits from the external fins of finned-tube air coolers without water, so the cooling system regains its performance — without interrupting production.
On-site condition assessment: we record the cooler's baseline performance and the degree of fouling.
We clean the finned tubes from below, during operation — without water, using a biodegradable, non-corrosive abrasive.
After cleaning we repeat the measurement, so the result can be compared in numbers with the baseline.
You receive a measurement report with maintenance and cleaning-interval recommendations.
| NPJ dry | High-pressure water | Active foam | Dry ice | |
|---|---|---|---|---|
| Can be performed during operation | Yes, even above 100 °C | No | No | Limited |
| Water consumption | None | Significant | Significant | None |
| Utilities required from the plant | None | Plant water | Plant water | None |
| Insulation getting soaked | Impossible | Risk | Risk | Impossible |
| Risk of fin damage | Zero — with expert execution | High | Low | High |
| Residual waste | Biodegradable, non-hazardous | Contaminated water | Chemicals | None |
| Cleaning efficiency | Bare-metal surface | Partial | Compromise | Surface-dependent |
Limescale
Improper cleaning
Corrosion
Improper cleaning
Fouling
Fouling
“We didn't expect such a clean surface. What we had accepted as a compromise with active foam technology — now we've seen a cooler can be much cleaner. I had only ever seen a cooler this clean when it was new.”
“The technology makes online cleaning possible even on equipment above 100 °C. If the cooler is clean, the plant doesn't lose 10% of its production capacity.”
“The timing was perfect and the team worked to a high standard. The remaining material decomposes — no hazardous waste is left after the work.”
“It is highly likely that if all air coolers were cleaned with NPJ dry technology, the parameter excursions would stop. These coolers could not be cleaned during operation with any previous technology.”
“We used to wash the coolers with fire water, but the efficiency was far below NPJ dry cleaning. All rules were followed, with no HSE issues. I would recommend it to other plants!”
“Thanks to the dry technology, cleaning the insulation cladding doesn't soak the rock wool. Effective, widely applicable technology — it could even be an alternative to dry ice cleaning.”
“The process is visibly effective, confirmed by the measurement results recorded in the report. It can be done in a short time and causes no harmful pollution of the environment.”
In any plant where air cooling can become a production bottleneck — including explosive (ATEX) zones.
NPJ dry cleaning works on every finned-tube, lamellar heat exchanger design — regardless of manufacturer.
The cleaning head adapts to every common installation geometry, and we reach coolers at heights of up to 200 m.
We don't make promises — we deliver measurement results. The report covers the measurement and cleaning conditions, a before–after comparison of the cooler's performance, and recommendations for maintenance and the cleaning interval.
Request a sample report →Yes. NPJ dry cleaning is performed online, during operation, even on equipment with surface temperatures above 100 °C. No shutdown or production loss is needed.
No. The pressure and abrasive combination was developed specifically for finned-tube coolers: it removes only the deposits and does not abrade the base material. The abrasive is non-corrosive and biodegradable.
A work permit and an air cooler. We bring everything else: our teams are self-supporting and require no utilities from the plant. With VCA/SCC certification and ATEX-rated equipment we also work in explosive zones.
With a clean cooling surface the cooler returns to near-factory capacity, and fan energy demand typically drops by 15–20%. We verify the exact value with a measurement report.
It depends on the environmental load (dust, pollen, industrial contamination). In the measurement report we provide a site-specific cleaning interval recommendation, typically a 1–3 year cycle.
No. The abrasive used is environmentally friendly, dissolves in water and decomposes — we hand the work area back clean.
Tell us what kind of air cooler you operate — we'll propose an online dry cleaning solution.
Tell us what you're working with — our engineers will propose the right solution.
