DHA Series Externally Heated & DBA Series Blower Purge Adsorption Dryers
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DHA Series Externally Heated & DBA Series Blower Purge Adsorption Dryers ENGINEERING YOUR SUCCESS. aerospace climate control electromechanical filtration liquid & gas handling hydraulics pneumatics process control sealing & shielding

Compressed Air - The 4th Utility Compressed air is a safe and reliable power source that is widely used throughout industry. Approximately 90% of all companies use compressed air in some aspect of their operations, however unlike gas, water and electricity, compressed air is generated on-site, giving the user responsibility for air quality and operational costs. Without proper treatment, compressed air systems suffer from performance and reliability issues. Almost all of these issues can be directly attributed to contamination, the main sources of which are: Water Vapor Condensed Water...

What is adsorption drying? Drying compressed air through adsorption represents a purely physical process in which water vapor (adsorbate) is bound to the drying medium (adsorbent) through binding forces of molecular adhesion. Adsorbents are solids in spherical and granular form which are permeated by an array of pores. The water vapor is deposited onto the internal and external surface of the adsorption medium, without the formation of chemical compounds taking place, therefore the adsorption medium does not have to be replenished but only periodically regenerated. Externally Heated With...

Behind the scenes of a DHA Series Externally Heat Reactivated & DBA Series Blower Purge Dryer domnick hunter DHA Series Externally Heated Reactivated Desiccant Dryers use the adsorption method to remove moisture from compressed air. Pressure dewpoints ranging from -40¢ªF (-40¢ªC) to -100¢ªF (-70¢ªC) are achieved by directing the flow of saturated compressed air over a bed of desiccant. The most commonly used desiccant is activated alumina, a spherically shaped, hygroscopic material, selected for its consistent sizes, shape and extreme surface to mass ratio. This physically tough and...

domnick hunter patented Multi-Port Regeneration System (DHA Series) ensures superior desiccant bed regeneration and, as a result, provides better and more consistent dewpoint. The Multi-Port Regeneration System injects heated purge air at precise points up and down the length of the towers to provide a more balanced distribution of heat. This system prevents the desiccant on top from prematurely deteriorating while providing the bottom of the chamber with enough heated purge air to allow complete regeneration on every cycle. The energy saving temperature monitoring system senses the exiting...

High performance components Full-flow angle seat valves Dryers up to 800 scfm are equipped with Parker’s time-proven and dependable non-lubricated full-flow angle seat valves, which carry a Five Year Warranty. (through 2”) Rotary actuated valves High performance, rotary actuated switching valves are standard on dryers 1000 scfm and larger. These premium, air operated butterfly valves are specifically designed for compressed air. They provide more opening and closing force compared to other types of valves. An indicator shows the “opened/closed” position of the valve and service can be...

eControl Center domnick hunter’s eControl Center for Heat Reactivated Desiccant Air Dryers features a full complement of data acquisition functions. The easy to use eControl affords superior dryer control along with digital telemetry for remote analysis of performance. Software included for virtual control, diagrams and graphics purecare SmartWatch ready with 68 channels of data & over 60 process valves Temperature & pressure instrumentation package Dewpoint Dependent Switching (DDS) - Optional 4-20mA input with setpoint and alarm for connection to your flow meter Intelligent display with...

eControl operational status Dewpoint Dependent Switching (Optional) Compressed air systems are rarely constant and the dryer regeneration cycle frequency is dependent upon the actual inlet flow, pressure and temperature. Operation under inlet conditions where there is lower than design flow and temperature and or higher pressure, will result in less regeneration cycles and a maximum in the cost of utilities. Dewpoint Dependent Switching (DDS) provides a precision demand cycle control which terminates the adsorption (drying). This results in the full adsorptive capacity of the desiccant bed...

An overview The adsorption capacity of the desiccant within the dryer is essentially constant whereas the moisture loading and the air flow through the dryer are continuously varying as ambient and plant conditions change. In order to maintain the specified air quality downstream of the dryer, it has to be sized for the worst case conditions, namely the lowest pressure, highest flow and highest inlet temperature. These conditions may only occur for a small part of the service life of the dryer, for example, the highest inlet temperatures may only be present during the summer months. This...

OIL-X EVOLUTION pre & after filters are included as standard on DHA & DBA Series. OIL-X EVOLUTION filters provide air quality in accordance with ISO 8573.1:2001, the international standard for compressed air quality. OIL-X EVOLUTION coalescing filters are the first range of filters specifically designed to deliver air quality in accordance with ISO 8573.1:2001 when tested with the stringent requirements of the new ISO 12500-1 international for Compressed Air Testing. OIL-X EVOLUTION filter performance has been independently verified by Lloyds Register. OIL-X EVOLUTION coalescing and dust...