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Munters - Dehumidification / Humidification / Cooling

Desiccant Rotor - PowerPurge™ - Adiabatic Humidification - Oasis™ - GLASdek

Munters Desiccant Rotor Technology

Munters desiccant dehumidifiers attract moisture from the air by creating an area of low vapour pressure at the surface of the desiccant. The pressure exerted by the water in the air is higher, so the water molecules move from the air to the desiccant and the air is dehumidified.

Munters desiccant dehumidifiers make use of changing vapour pressures to dry air continuously in a repeating cycle described by the simple diagram below.

As the desiccant picks up moisture from the surrounding air, dry air is discharged to the process area and the reactivation air stream discharges the wet air outside.

Munters units can operate in a wide range of temperatures, including at low temperatures down to -40°C.

Munters PowerPurge™ - Save up to 35% Energy

PowerPurge works in a similar way to the standard desiccant rotor, yet it has its own small fan that circulates the air between the two additional sectors. PowerPurge saves energy in two ways:

The unique patented PowerPurge acts as an energy recovery system, collecting waste heat off of the hottest section of the desiccant wheel and using it to help with the regeneration by pre-heating the coolest part of the rotor. This reduces the energy required for reactivation while also reducing the discharge temperature of the process air, resulting in lower energy costs for post-cooling;

PowerPurge can also save on first cost. Equipping a desiccant system with PowerPurge can reduce the size of the desiccant rotor without diminishing the dehumidification capacity.

Benefits of Munters PowerPurge™:

  • Reduced reactivation energy
  • Reduced post cooling energy
  • Energy savings
  • Improved drying performance

Munters Adiabatic Humidification & Cooling

Water is circulated through a pump station and supplied to the top of the cooling pad via a distribution manifold. A distribution pad on the top of the cooling pad ensures an even water distribution. The water flows down the corrugated surface of the GLASdek evaporative cooling pad.

Part of the water is evaporated by the warm and dry air that passes through the pad. The heat that is needed for the evaporation is taken from the air itself. The air that leaves the pad is therefore cooled and humidified simultaneously without any external energy supply for the evaporation process. This is nature’s own cooling process.

Modular design fits all AHUs, for airflows from 0.5 to 30m³/s.

Munters Direct and Indirect Evaporative Cooling systems reject heat without adding moisture to data centres, hospitals, airports, correctional and power facilities. Munters award winning Oasis™ Indirect Evaporative Coolers can provide energy savings in excess of 70% when compared to traditional chiller cooling systems.

Evaporative cooling is an energy efficient solution for industry, where hot indoor climates lead to low yields, reduced productivity and unsatisfied working staff.

Munters Oasis™ Indirect Evaporative Cooler (IEC)


  • Industry leading energy efficiency down to 280kWh/kW
  • Cooling Zero particulate & gaseous contamination
  • Fully packaged, compact systems
  • Configurable design
  • Multi stage water operation
  • Low maintenance
  • Munters heat exchanger technology – EPX
  • Suitable for all types of fresh water
  • Proven award winning core technology

Plug Fan Upgrades

EC fan technology has been proven to reduce energy consumption, lower CO2 emissions and improve AHU efficiency (compared to older belt driven fans). On average, this saves 40-50% power on an AHU and provides fans that deliver greater levels of control.

The new designs can provide higher air flow for the same or lower energy use, or be used to reduce energy bills, which lowers operating costs and cut CO2 emissions. Modular design enables quick and easy replacement of future fans.

Munters is committed to providing the best service, including data logging before and after to highlight the savings made and provide evidence of the savings.

Click the PDF image to view the technical information in full


Request Munters Info

Munters Ltd
Knowledge Centre
Great North Road
MK44 3BY

Email Munters

Tel: 01480 410211

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