Page 47 - Climate Control News Magazine May 2019

New products
Humidifier with ultra hygienic performance
THE NEW CONDAIR DL in-duct adiabatic hu- midifier offers the accurate humidity control normally only available from steam humidifiers, but with the low energy performance and evapo- rative cooling benefit of a cold water system.
It also incorporates many anti-microbial fea- tures that make it one of the most hygienic hu- midifiers available.
The Condair DL is a hybrid humidifier that combines spray and evaporative technologies to maximise moisture absorption and provide hu- midity control at ±2%RH.
A water treatment system provides pure water to a grid of nozzles located inside the duct.
The nozzles spray towards a ceramic droplet separator, which has the dual action of prevent- ing aerosols from travelling down the duct and offering secondary evaporation through its po- rous surface. This increases efficiency of the sys- tem with 95% of the spray water evaporating during both processes.
meet a required output and humidity demand. Following the initial stage control, fully modu- lating control is then achieved by increasing the water pressure to the nozzles. By responding to humidity demand and output control in this way, the humidifier can deliver the type of hu- midity accuracy typically only available from a steam humidifier.
The humidifier incorporates an RO water treatment system that ensures only pure water is introduced to the AHU. It then treats the pure water with a patented silver ionisation process that actively inhibits microbial growth and has a residual effect throughout the humidifier.
Flush and drain cycles prevent water from re- maining in the system to stagnate and optional compressed air drying guarantees moisture cannot remain in the humidifier’s water lines. In addition to these features, optional H2O2 disin- fection can be incorporated into the system and initiated via the control panel.
Condair DL is a hybrid humidifier that combines spray and evaporative technologies to maximise moisture absorption and provide humidity control
at ±2%RH.
gienic humidifiers in the world and have earned the unit accreditation by the SGS Institut Frensenius in Germany for hygienic operation.
The system was independently tested under real-life operating conditions for a six-month period. Part of the investigation included purposeful microbial contamina- tion to assess the effect. Through- out the test the Condair DL fulfilled all requirements and outperformed the VDI 6022 industry standard for microbial growth, achieving a max- imum CFU/ml microbial count 85% less than the recommended limit.
The Condair DL offers both the control accuracy of electric steam humidifiers and extremely hygien- ic operation but without the high
electrical energy costs.
By pre-heating the airstream prior to the Con-
dair DL with gas-fired heating, the same volume of moisture can be absorbed by the air as steam humidification provides, but at one third the en- ergy cost due to the economy of gas.
If a building’s waste heat can be used for the pre-heating process, the humidification energy savings are even greater.
As with all adiabatic humidifiers, the Condair DL also offers the additional benefit of evapora- tive cooling during the warmer months.
As 1kg of absorbed moisture provides 0.68kW of evaporative cooling to the air, the Condair DL can provide over 680kW of cooling per hour from as little as 1kW of consumed electrical energy.
Condair Group is the world’s leading specialist in humidification and evaporative cooling, and offers advice in system design, supply, commis- sioning, maintenance and spares.
Visit: www.condair.com.au.
The spray nozzles initially operate in stages to
All these features make it one of the most hy-
CLIMATE CONTROL NEWS MAY 2019
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