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Lindab Pascal - Simplified VAV solution with full potential. Constant pressure solution. Solution based on constant pressure regulation Active diffusers with built-in damper plate, which is controlled by a room regulator with 0-10V signal

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slide1
Lindab Pascal

- Simplified VAV solution with full potential...

slide2
Constant pressure solution
  • Solution based on constant pressure regulation
  • Active diffusers with built-in damper plate, which is controlled by a room regulator with 0-10V signal
  • Exhaust air flow regulation by measuring airflow in supply duct
  • Pressure regulation in supply distribution duct
slide3
Constant pressure solution
  • Exhaust balance with flow measurement – master/slave function
  • Measuring unit has a minimum flow rate limit
  • Measuring unit requires straight duct before the unit
  • Addition of several supply to control one exhaust is difficult
  • FRU/VRU settings must be done special from factory
  • Extra components for flow measurement
slide4
Constant pressure solution
  • Active diffusers
  • Diffusers with high impulse even at low airflows
  • Diffuser settings must be done individually from factory
  • Not possible to put on stock
  • Labelling with ID must be done for each room
  • Airflow settings are based on theoretical calculated pressure (no airflow regulation)
    • Correct pressure = correct airflow
    • Higher pressure = higher airflow
    • Lower pressure = lower airflow
slide5
Constant pressure solution
  • Pressure regulation
  • Areas with constant flow balanced with simple balancing damper
  • Limited pressure allowance in diffuser
  • Size of pressure zone not to big
  • Difficult keeping constant pressure in all parts of a zone
  • High demand on duct design
  • Limited flexibility when reconstructed
  • Exact placement of pressure sensor
  • Higher energy consumption due to higher minimum pressure
  • Fan optimizer only on zone dampers
  • Extra components for pressure regulation
slide6
Vision
  • Our vision is:
  • Install a standard VAV system with room temperature regulation
  • Make settings of air flow in room regulator
  • Indicate which supply diffusers that affects the exhaust damper
  • This is done by:
  • Installing a motorized plenum box that can handle high pressure with low sound
  • Installing a suitable diffuser that can handle 0-100% airflow without the risk of draft
  • Making sure the pressure in the system is not exceeding 200 Pa
  • Measuring actual air flow regardless of pressure
  • Setting all parameters in displays on Regula units
  • Total air flow for supply diffusers is being added up and exhaust air flow is regulated
  • The fan uses only necessary pressure for each diffuser
slide7
Constant pressure solution
  • Active diffusers
  • Constant pressure
  • Measuring for exhaust
  • Pascal
  • Active boxes
  • Variable pressure
  • Calculation for exhaust
slide9
Pascal components
  • Diffusers
  • Suitable diffusers for 0-100% airflow
    • LCP
    • LKP
    • LCC
  • Diffusers with integrated presence sensor for Demand control
    • LCP-P
    • LKP-P
    • LCC-P
  • No draft risk with suitable diffuser
slide10
Pascal components
  • MBBV
  • Standard MBB box with integrated actuator
  • Volume flow regulation with flow measurement in box
    • Correct airflow independent of pressure
    • No minimum limit – can regulate 0-100%
    • Can handle up to 200 Pa with low sound level
    • Characteristic curves pre-programmed for each size
    • Translates a voltage to an airflow
    • Indicates damper position by a voltage signal
    • Demounting of damper is possible
    • 7 sizes available
    • MBBV is delivered with 0-100% settings
    • (never set actual airflows in MBBV, since Regula Combi
    • will adjust the signal according to flow)
    • Regula Connect VAV integrated
    • Plugin play solution for easy wiring
slide11
Pascal components
  • VRU-2
  • With new sensor technology from Belimo
  • Used for regulation of exhaust air
  • Controlled by Regula Combi with special exhaust program
  • Indicates damper position to Regula Combi
  • Can be used for supply as alternative to MBBV boxes, typically used in rooms with multiple diffusers
  • Requires straight duct in front the unit
  • Requires silencer after the unit
  • In a Pascal system VRU is delivered with 0-100% settings
  • (never set airflows in VRU, since Regula Combi will adjust the signal according to flow)
slide12
Pascal components
  • Regula Combi
  • Special designed VAV program (program 6)
  • Special designed exhaust program (program 7)
  • Display and pushbuttons
  • Exoline communication
  • Flexible setup – adjustable parameters
  • Regulation of temperature in sequence; heating and cooling
  • Output signal for flow 2-10 V – 0 V closes damper
  • CO2 overrules temperature regulation resulting in higher airflows
  • Air volumes for standby (unoccupied), min. occupied and max occupied can be set
  • Transforms damper position to Exoline communication
  • Transforms exhaust damper signal from Exoline to 2-10 V (exhaust program)
  • All settings can be done with REGIO Tool
slide13
Pascal components
  • Regula Master
  • Standard hardware from Regin – known in the market
  • Special designed software for Pascal
  • One standard unit with three modes
    • Single Regula Master (SRM)
    • Local Regula Master (LRM)
    • Global Regula Master (GRM)
  • Three basic functions in the system
    • Exhaust control
      • Summary of supply air volumes which affect the exhaust damper
      • Summary of constant flows which affect the exhaust damper
      • Factor for more/less exhaust than supply
    • Fan optimizer
      • Secures that the most open damper is open to 85%. If the damper is more open, accelerate the fan – if less slow down
    • Operating control
      • Monitors damper behavior in the system
      • Gives alert if a damper does not move over time
  • All communication between Regula units with Exoline
  • Communication to overall BMS via Exoline or via an OPC solution (BMS contractor)
slide14
Pascal overview
  • Volume flow regulation / variable pressure system
  • Suitable diffusers 0-100%
  • Room regulation with special programs
  • Demand control
  • Exhaust control
  • Fan optimizer – on room level
  • Operating control
  • Exoline communication
  • Plug n’ play with Regula Connect
slide15
VAV study
  • Rehva Journal article October 2011 from Oslo University
  • Problem: Energy consumption for fans in VAV systems
  • Solution 1 – standard pressure controlled system
  • Solution 2 – fan optimizer on zone dampers
  • Solution 3 – fan optimizer on room dampers/boxes
slide16
Exhaust strategy
  • Central regulation and exhaust diffuser in rooms
  • Central regulation and overpressure valve in rooms
  • Room balanced exhaust with parallel signal
  • Room balanced with exhaust control in each room
slide18
Project Phases Pascal
  • Designing
  • No special demands for duct design
  • No pressure zones
  • Few standard components
  • Easy selection of components
  • Total system unchanged when redesigning one part
  • High accuracy in flow and sound
  • Simple and safe
  • Installing
  • Few components
  • Less dampers in the system
  • No pressure regulation
  • Components from stock
  • Easy wiring standardized with Regula Connect
  • No labelling with room ID needed
  • Configuration to be done after installation
  • Commissioning
  • Adjustable parameters
  • Technical manual with step-by-step guide available
  • Settings can be done directly in displays in Regula Combi and Regula Master
  • Possibility to use Regio Tool
  • No IT expertise needed
  • Can be done by installer
  • Operating
  • Operating control
  • Fan optimizer on room level
  • Demand control – with 3 airflows for energy saving
  • Easy maintenance with supply access points from diffuser
  • Flexible for future changes
  • Additional diffusers – no need for re-balancing
  • New room set-up can easily be configurated
slide19
Summary
      • Simple Design
  • Variable pressure system
  • Plenum box with flow regulation to secure correct airflow
  • No need for pressure regulation in duct system
  • No need of dampers between fan and diffuser
  • No special demands for duct design
  • Flexible system layout
  • No need for zoning
  • Plenum box with low sound even at high pressure
  • Flexible diffusers that handles 0-100% airflow
  • Can handle low airflows with new D3 sensor technology
  • No need for airflow measurement for exhaust control
  • Extra diffusers can be added without re-balancing
  • Change of room set-up can be easily be done
      • Easy Construction
  • Standard installation
  • Few standard components
  • Less dampers and silencers
  • No settings from factory
  • No need for ID labeling products for each room
  • Available from stock
  • Plug n´Play wiring with Regula Connect
  • All configuration to be done after installation
  • Easy commissioning
  • No balancing, only configuration
  • Configuration can be done by installer
  • Special Pascal programs in Regula Combi
  • Adjustable parameters
  • Simple addition of supply to control exhaust
  • All configuration can be done directly in Regula units or Regio Tool
  • Exoline is an open Protocol
  • Step-by-step guide available
  • Communication with overall BMS is possible
      • Low Energy consumption
  • Low fan pressure
  • Lower pressure drop due to variable airflows
  • Fan optimizer to secure only necessary fan pressure
  • Fan optimizer on room level
  • Low pressure drop in MBBV box
  • Demand control
  • Integrated presence sensor in diffuser
  • Low standby airflow at non-occupancy in room
  • CO2 control possible
  • Lower airflows means lower energy consumption for cooling
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