- Increased cooling coil latent (dehumidification) capacity
- Lower achievable supply-air dew point
- Decreased need for reheat
- Lower unit cooling sensible heat ratios
- Warmer required chilled water temperatures
- Improved energy efficiency for dehumidification
- Decreased required cooling capacity when dehumidifying
- Eliminates exhaust air as a requirement
CDQ® Desiccant Dehumidifier
Overview
Trane CDQ regulates and maintains your building's humidity levels, improving occupant comfort and building energy efficiency.
- Available on CSAA sizes 3-50, two wheels available per unit size
- Airflow capabilities ranging from 1000 to 25,000 cfm
- 20-300% improvement in dehumidification
- 5-15F lower dew point temperature
- 20-80% reduction in cooling and reheat energy
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Improved Dehumidification Levels
With CDQ technology, critical dehumidification levels can be improved 20% to 300% by delivering dew-point temperatures 5°v to 10°F lower than traditional cooling coil systems.
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Reduced Supply-Air Dew Point Temperature
The CDQ Desiccant Dehumidifier enhances the dehumidification performance of the cooling coil. The latent (dehumidification) capacity of the cooling coil increases without increasing the required cooling capacity. With the addition of the CDQ, a lower supply-air dew point temperature can be achieved.
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Cooling and Reheat Energy Savings
The CDQ Desiccant Dehumidifier can save cooling and reheat energy requirements, and can even allow for downsizing of the cooling equipment. The cooling coil sensible heat ratio is also lowered with CDQ without using reheat. This helps the unit provide up to 200% better part load dehumidification and reduces the need for reheat.
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Energy Efficiency Improvements
The CDQ Desiccant Dehumidifier can help improve the energy efficiency of chilled-water systems, as it may reduce the pumping power by allowing reduced chilled-water flow rates, and may reduce the need for glycol. This allows building areas requiring lower dewpoints to use the same water temperature as the rest of the facility.
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Extends the Dew Point Temperature of Traditional Chilled Water Systems
A cooling coil can typically dehumidify air to a dew point that is 5°F to 10°F above the temperature of the fluid or refrigerant that flows through its tubes. By adding a CDQ desiccant dehumidifier to the process, the supply-air dew point can be 0°F to 10°F below the chilled-water temperature.
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Reduces Path Noise Control Options
The CDQ desiccant wheel features a blow-thru design, making it significantly quieter than a standard draw-thru unit.
Product Information
- Available on CSAA sizes 3-50, two wheels available per unit size
- Airflow capabilities ranging from 1000 to 25,000 cfm
- 20-300% improvement in dehumidification
- 5-15F lower dew point temperature
- 20-80% reduction in cooling and reheat energy
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FAQs
Your CDQ dessicant dehumidifier questions, answered.
The Trane Cool Dry Quiet CDQ Desiccant Dehumidifier is an option for Trane Performance Climate Changer® Air Handlers that is used to enhance the dehumidification performance of a traditional cooling coil.
The CDQ is configured in series with the coil (see Figure 1) such that the “regeneration” side of the wheel is located upstream of the coil and the “process” side of the wheel is located downstream of the coil. The CDQ Desiccant Dehumidifier adsorbs water vapor from the air downstream of the cooling coil and then adds it back into the air upstream of the coil where the coil removes it through condensation. This process is accomplished without the need for a second regeneration air stream.
The Trane Cool Dry Quiet CDQ Desiccant Dehumidifier is used to enhance the dehumidification performance of a traditional cooling coil. The CDQ is configured in series with the coil such that the “regeneration” side of the wheel is located upstream of the coil, and the “process” side of the wheel is located downstream of the coil.
The CDQ Desiccant Dehumidifier adsorbs water vapor from the air downstream of the cooling coil, and then adds it back into the air upstream of the coil, where it is removed by the coil through condensation. This is accomplished without the need for a second regeneration air stream.
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