The Systems
The combination cornerstone to a winning HVAC system
Displacement Induction and Chilled Beams System Operation
DOAS Unit
- Provides 100% dehumidified outside air for code required ventilation needs
- Delivers verifiable outside air for occupants
- Rooftop or indoor mounting
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Shown with hot water or chilled water
- Packaged DX and gas heat suitable
- Geothermal suitable
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Typically energy recovery based
- Desiccant devices suitable
- Isolates rooms so no room-to-room airside cross contamination occurs
Chiller
- Provides chilled water for QLCI and possibly DOAS chilled water coi
- Air-cooled or water-cooled suitable
- If DOAS unit is packaged DX, dedicated elevated chilled water to QLCI offers high efficiency operation
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Alternatives
- No Chiller Design Option (only HW available) Packaged DX DOAS applied and designed to deliver cool, dehumidified primary air for recognized sensible cooling in space
- Geothermal water applied – Electrification
- Heat recovery chiller – Electrification
Boiler
- Provides hot water for QLCI zone heating and possibly DOAS hot water coil
- Often high efficiency condensing style boilers applied
- Gas fired or electric boiler suitable
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Alternatives
- If existing steam source available, apply a steam-to-hot water conversion
- Some climate designs may not require hot water in the zone
- Geothermal water applied – Electrification
- Heat recovery chiller – Electrification
QLCI
- Receives 100% outside air from DOAS unit to drive room air induction process across integral coil
- Chilled water and hot water flow modulated to control sensible space loads
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Supply air delivered near floor in displacement mode for
- Effective removal of airborne contaminants for better IAQ
- Low velocity, temperate air for enhanced thermal comfort
- No moving parts to maintain, produce noise, or consume electricity
- Provides industry leading system efficiency due to displacement ventilation and fluid-based heat transfer
Chilled Beams
- Utilizes same 100% OA from DOAS unit for ventilation air to spaces
- Utilizes same chilled water and hot water to control sensible space loads
- Keeps the HVAC mechanical system congruent versus applying another technology
- Applied in smaller, less occupied spaces for improved thermal comfort and acoustics
- No moving parts to maintain, just like QLCI in classrooms
Comparative Analysis – System Technologies
The heart of Carson Solutions’ displacement induction ventilation and chilled beams operation is the Dedicated Outside Air System or DOAS (100% OA) unit.
In order to understand the different system approaches, we have put together a comparative analysis between a DOAS-DIV (chilled beam) system and other typical HVAC approach such as AHU-VAV, DOAS-FCU, DOAS-VRF, and stand-alone Unit Vents.
See for yourself the system, operational, and beneficial characteristics of the DOAS-DIV system delivers compared to other systems!
Click on the link below to learn more.