HDI refrigeration dryer
Air flow 12m³/h to 23000 m³/h
Hankison’s direct expansion refrigeration dryers are the latest addition to our product line and stand for reliability and efficiency. These dryers have been specially developed to ensure consistently high performance and optimum efficiency in various industrial compressed air applications.
They use advanced cooling technology to provide effective compressed air drying solutions and are available in a wide range of models covering an air flow of 12 m³/h to 23,000 m³/h (at a pressure dew point of 3°C). All models in this series meet ISO class 4. In addition, the HDI 12-260 models use the environmentally friendly refrigerant R513A, enabling our customers to achieve their environmental goals.
Air flow
12 to 23,000 m³/h
Pressure dew point
3 °C
Compressed air quality
ISO class 4
Protection rating
IP42
The advantages of the HDI direct expansion refrigeration dryer
- Air-cooled condensing (standard) – water and seawater versions are optionally available from 600 m3/h.
- Victaulic connections (optional) – for quick and easy connection of piping.
- Reliable design – scroll compressors with corrosion-resistant materials. They have fewer moving parts, are fully instrumented and monitored, and are protected by IP42-rated electrical enclosures.
- Smaller footprint – 30 % smaller than the previous model.
- Innovative control panel – with all the important functions you would expect for controlling and monitoring the unit:
- Anti-frost mode – switches the dryer off to prevent icing
- Alarm display: dew point, high/low temperature, high ambient temperature
- Remote ON/OFF (optional)
- Alarm history
- Condensate drain management
- New heat exchangers – designed and developed in our laboratories to achieve maximum performance with minimal pressure loss. Using the new Hankison heat exchanger made it possible to eliminate the inlet and outlet manifolds.
- Innovative zero-loss drain – with a sensor installed directly in the moisture separator and control logic managed via the main control panel .
Overview of the Hankison HDI dryer range
HDI 12-480
The compact HDI series refrigeration dryers are specially designed for maximum efficiency and reliability. Each model is equipped with a high-efficiency heat exchanger and an integrated condensate separator. The heat exchangers developed in-house by Hankison meet the highest market standards and are characterised by a particularly low pressure drop. Thanks to patented technology, the programmable control board automatically adjusts the fan speed to the load. This adaptability ensures consistently high performance under all operating conditions, optimises energy consumption and increases system efficiency, so our dryers perform convincingly in every situation.
HDI 600-6650
The medium-sized HDI refrigeration dryers offer an optimum solution for applications requiring efficient moisture removal from systems with large air flows. Every model in this series features a completely new design, specially developed for easy inspection and maintenance under any conditions. Equipped with an advanced electronic control board, a hot gas bypass valve and a zero-loss drain, these dryers offer all the functions needed to ensure reliable operation in any working environment. These refrigeration dryers are built to deliver lasting performance and reliability even under the most demanding conditions.
HDI 8800- 23000
The new HDI series of large refrigeration dryers has been completely redeveloped to offer an optimum combination of high efficiency, minimal pressure drop and compact dimensions. This redesign aims to significantly reduce management costs and installation time. Particular attention was paid to simplifying operation by rationalising the number of circuits and electronic controls, which improves user-friendliness and access for maintenance work. In addition, all units come with a zero-loss drain as standard, further increasing efficiency and reducing operating costs.
Frequently asked questions
What air flow do the HDI refrigeration dryers cover?
From 12 m³/h to 23,000 m³/h at a pressure dew point of 3 °C. The range is divided into the HDI 12-480, HDI 600-6650 and HDI 8800-23000 series.
What compressed air quality do the units achieve?
All models in the series meet ISO class 4.
Which refrigerant is used?
The HDI 12-260 models work with the environmentally friendly refrigerant R513A.
Are there water-cooled versions?
As standard, the dryers are air-cooled. Water and seawater versions are optionally available from 600 m³/h.
How much space does an HDI need?
The units are 30 % smaller than the previous model. The new Hankison heat exchanger does without inlet and outlet manifolds.
How is the condensate drained?
Via a zero-loss drain with a sensor directly in the moisture separator, controlled from the main control panel. The large HDI 8800-23000 models have it as standard.
What functions does the control panel offer?
Among other things, an anti-frost mode, alarm displays for dew point and temperatures, an alarm history and condensate drain management. Remote ON/OFF is optional.
How do the small models adapt to fluctuating load?
On the HDI 12-480, the programmable control board automatically adjusts the fan speed to the load. This optimises energy consumption.
How is the piping connected?
Optionally with Victaulic connections for quick and easy connection.
Who can help me with sizing?
We can. The right size depends on flow rate, compressed air inlet temperature and ambient temperature. Call us or write to us.
Which refrigeration dryer suits your application?
The sizing of the right Hankison HDI direct expansion refrigeration dryer varies depending on flow rate, compressed air inlet temperature and ambient temperature. Let us advise you to find the optimum model for your needs.