Mikael Börjesson Product manager Commercial air handling units Ventilation functionality Building management system integration
Topics • Presentation of the new generation of compact air handling units, when standardization meets adaptation • What performance will you have if you integrate the production of heating and cooling inside an air handling unit? • How to ventilate with minimal risk of contamination from extract air?
Background and purpose
Purpose GOLD PX Several tasks: • Transport • Impurities • Over/under-temperature • Provide fresh air • Balance pressure in building • Recover heat and cold Impurities As energy effective as possible! Fresh air
Characteristics GOLD PX Different components and combinations of… • Fans • Energy exchangers • Casing • Controls • Modularity/flexibility …will make products suited for different applications GOLD SD
Air handlig units (AHU) GOLD PX • Different combinations gives different product categories • One piece units • Modular units • Supply- and extract air units • Residential units • Room units GOLD SD
Todays focus: One piece unit GOLD PX Key components and controls in one casing • Benefits: • Compact sizing • Integrated functionality and controls • Serie produced & quality tested • Energy effective • Optimized costs • Easy to configure GOLD SD
Performance – hard facts • What are included in “high performance”? • Two main aspects: 1. Ability to recover energy from air 2. Ability to transfer air in an streams effective manner: - Air pressure in system - Pressure drop in unit - Air flow - Fan performance - Unit size
Performance – Energy recovery • Target: Find an optimal balance between energy recovery and internal pressure drop Effective energy exchanger Low pressure drop High temperature recovery The air streams will pass the between supply- and extract air exchanger easily, which will demands high density which decrease the needed fan energy means more material that can transfer energy Decreases the energy recovery Increases pressure drop Recommendation! Compare different annual energy calculations
Performance – Effective air movement • Low electrical consuming per unit transported air • Index key: • SFP v : Ventilation units specific fan effect, kW/(m 3 /s) • Depending of: Low pressure drop internally Fan efficiency
Performance – Effective air transport • The unit is not everything – it has to match the system Airflow that matches fan capacity/unit size Low duct pressure
Performance To consider: 10% airflow increase 20% increase of duct pressure 40% increase of motor effect Try to plan for future changes when dimensioning the unit/system
Performance • Important to balance all this aspects! • Low SFP v -number for normal condition • High annual energy efficiency for energy exchangers • Low duct pressure • Correct size for the ventilation unit
• Presentation of the new generation of compact air handling units, when standardization meets adaptation The new GOLD air handling unit crosses the border for what we know about One piece units with compact design
The formula behind a good indoor climate Hardware Software Performance Knowledge 16
More then 20 years… GOLD ventilation + controls 94 96 98 00 02 04 06 08 10 12 14 16 18
Constant development New generation GOLD Intelligence Eco Design Flexibility Safety Comfort Economy New challenges
More freedom • Modularity • Adaptability 2017 1994 New platform 3 sizes 1 cover
ANIMATION MODULARITY
The best of two worlds Serial produced compact unit + Extended flexibility = Everyday benefits
Casing performance • Excellent casing • Improved design for outdoor installation Handles & connection hood adapted for outdoor use Composite hinges New sheet Recessed metal quality doors
Casing performance • Outstanding performance data
• What performance will you have if you integrate the production of heating and cooling inside an air handling unit? Presentation of the new GOLD air handling unit with integrated reversible heat pump.
An unbeatable combination for ventilation, heating and cooling
ANIMATION RX/HC
GOLD RX/HC • Performance • Air flow up to 23400 m3/h • Cooling output up to 110 kW • Heating output up to 44 kW • Operation down to -25 ° C and +35 ° C • Energy efficient • Sorption rotor • Inverter controlled compressor • High COP/EER
Performance
Functionality • Cost efficient • Defrosting options according to climate zone • Simple system design • Ventilation, cooling and heating in a single package • Simple installation and operation • Unbeatable compact dimensions • Prefilled • One common GOLD control interface
• How to ventilate with minimal risk of contamination from extract air? Introducing the GOLD air handling unit with rotary exchanger and counter flow exchanger for different applications.
How to choose the right solution… • Minimize contamination risk • Keep or increase efficiency
Rotary heat exchanger Optimized space
RECOnomic rotary exchanger • Temperature efficiency above 85% • No need for defrosting • Patented solution Conventional solution Patented Swegon’s turbulent solution
Contamination control • Purging sector separates supply and extract air Without purging sector With purging sector renblåsningssektor
Contamination control Through… • Pressure measurements • Adjustments plates P • Purging sector • Carry-over control • Secured airflow Reliable for VAV/DCV! Extreme low internal leakage, only 0,45%
GOLD RX - Rotary heat exchanger • High annual temperature efficiency • No need of defrost • Small footprint • Most contamination is reduced
RECOflow Counter flow heat exchanger • Temperature efficiency above 85% • Demand controlled adaptive defrosting • Compact design • Internal leakage L2
ANIMATION GOLD PX
RECOfrost • High temperature efficiency when defrosting Exchanger/damper Exchanger/damper • Less need for post heating Bypass • Unique demand control of defrosting • Handles cold climates without pre heating
Spring and autumn optimization • Automatic pressure reduction • Reduces pressure up to 64% • Energy savings
RECOflow and RECOfrost • Compact footprint • Temp efficiency up to 88% • High annual energy efficiency • Tight – fulfil class L2 • Reduces pressure drop
How to choose the right solution… • Minimize contamination risk Advantage: • Annual energy efficiency • Keep or increase efficiency • Needed space • Depending of odour you can choose both solutions • Each solution has its Advantage: • High tightness class advantage and disadvantage • Demand controlled defrosting
GOLD air handling unit GOLD PX Key components and controls in one casing • Adaptable • Integrated cooling and heating production • Energy efficient exchangers with solutions to handle contamination between air streams GOLD SD
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