⊙ CEEWS(Controlled Environment Extreme Weather Simulator)

CONSTRUCTION
* Exterior dimension: 15'-9½" × 15'-5" × 13'-8" (4,810 mm W × 4,700 mm D × 4,165 mm H)
* Interior dimension: 13'-1½" × 12'-9½" × 11'-1¼" (4,000 mm W × 3,900 mm D × 3,380 mm H)
* Area: 15.6 ㎡
* System constricted of 5" formed-in-place urethane panels.
* Interior skins to be stuco embossed aluminum with white baked-on finish.
* Exterior panel skins to be to be stuco embossed aluminum with white baked-on finish.
* Exterior roof to be galvanized steel.
* 42" × 84" (1,070 x 2,135) clear open door with 14"x 24" (355 x 610) observation window and light tight
* Window cover. Door jamb and window are heated.
* Water Spray nozzles mounted below lamp canopy.
* Ceiling mounted unit cooler containing main cooling coils.
* Drain fan.
* Recirculating air fans
* Condensate drain to be routed floor drain inside.
* Air walls with perforated metal to provide airflow uniformity.
* Canopy cable penetration.
* 39" (1,000 mm) minimum clear height required above system for equipment access and service.
* Control console with clear locking cover.
* Breaker panel.
* Vent damper system for CO₂circulation.

Dual water cooled condensors
* Dual water cooled condensing(7.5 PH) unit located next to system.
* Centralized Multi-Stack chilled water system.
* Refrigeration lines from conditioning equipment to condensing unit.
* Sporlan modulating valve located on condensing unit.
* Transformer and fused disconnect for condensing unit.
* Coolant: R 404A
* Side wall heat exchangers utilized.
* Fans and coils mounted inside a false wall.
* Temperature control range
-10 to 35℃ lights off ( resolution: ±0.1℃ )
- 5 to 40℃ light on ( resolution: ±0.1℃ )
* Air circulation be from the sides to middle and up.

Multi-stack chiller system
* Multi-Stack chiller supply chilled water the following : Water-cooled condensing unit.
Light conditioning module. / Rain water / Soil temperature control(option)
* Modular system.
* Module capacity : 25 ton.
* LCD screen display.
* Simple keypad provides control of unit operations.
* Wide array of module combinations.
* Install only the capacity required at the time.
* Automatic diagnostic recording of fault conditions.
* Manual switch allows redundancy control as each modulehas a processor allowing it to run even if master controller fails. * Compressor type: Scroll
* Refrigerant: R410A　

LIGHTING CONTROL SYSTEM
* Lighting intensity provide 1,500 micromoles/㎡·s at 1m distance.
* Lighting intensity control range: 200 to 1,500 micromoles/㎡·s
* Control step: ±1 micromoles/㎡·s
* Resolution: ±1 micromoles/㎡·s
* Lights controlled via PLC based control with input from a quantum sensor.
* Light Canopy is covered with clear plexiglass.
* Desiccant dryer.
* Roof mounted ballasts.
* (4) 4' x 8' (1,220 mm x 2,440 mm) fixtures each containing either (16) HID lamps in pyramidal reflectors.
* Lamp conditioning modules located within lamp canopy area, containing (2) blowers, coils, and drain pans. Condensate drain to be routed to floor drain inside system.
* Lamp pyramidal reflectors increased the photosynthetic photon flux density(PPFD) from 650 to 1,200 micromoles/㎡·s.

RAINFALL CONTROL SYSTEM
* Nozzles and Hoses in the system mounted under the light canopies.
* Rain droplet size will be constant due to nozzle collection.
* Outside rain gather tank(5-ton overflow protected) included pipe line, filter, valve.
* (2) Water filter : Compound: Silver based anti-microbial compound.
                                Maximum Flow: 15 L/hr
                                Operating water temperature: 4.4 to 38℃
                               Easy to install and maintain
* Rain Preconditioning tank included Sump Pump and Coil for cooling and heating.
* Rain Temperature control range: 5 to 35℃
* Rain Temperature resolution: ± 0.5℃
* Rain control range: 0 to 50 mm/hr
* Rain control resolution: ± 5 mm/hr
* Water mass flow meter: 0 to 1,000 mm/hr
* Floor drain.

CARBON DIOXIDE CONTROLLER
* Carbon dioxide range
: Additive only ambientot 2,000 ppm.
* CO₂transmitter
: CO₂measurement range 0 to 2,000 ppm
- Accuracy : ±2%
- Long term stability: ±5% of range/5 years
- Temperature dependance : -0.35% of readin℃g/
- Pressure dependance: +0.15% reading/hPa
* Flow control meter.
* Solenoid valve.
* 1/4" flexible clear poly tubing.

SOIL BINS
* Be mounted in the floor of the module.
* Two rows of bins provided per module.
* Dimension: 3,000 mm W x 900 mm D x 1,000 mm H
* Bins have glass viewing panes on one side along the length.
* With hole tab for soil sampling and sensing.
* Bins movable down side for soil change.
* (2) Lift table for Load Cell.
* Quick disconnects pipe line and valve.
* Water mass flow meter: 0 to 1,000mm/hr

RELATIVE HUMIDITY CONTROL SYSTEM
* To control dew point and minimize condensation.
* Desiccant dryer.
* RH during rain cycle not be controlled.
* Relative humidity control range: 0% to 90%
(Light ON: 5 - 75% RH, Light Off: 10 - 90% RH)

IRRIGATION SYSTEM
* Supports up to 64 zones.
* Soil humidity sensor.
* Irrigation mode
- Timed mode.
- Reference mode.
- Sensor mode.
- Fertilizer mode.

* Intuitive user interface is completely customizable.
* Interface is expandable to 16 closed-loop and 64 open-loop control channels.
* Ability to accept additional analog or digital inputs.
* Real-time digital and graphical display of all control parameters.
* Data for user selected period up to 24 hours displayed for each closed-loop control channel.
* Real-time, 24 hour programming for all channels.
* Automatic data logging of all control parameters.
* Built-in security features for control over unit functions.
* Relative and absolute alarms and Local and remote diagnostics.
* Ability to network any number of controllers via an ethernet network.
* Communicate with multiple workgroups of the micro controllers with up to 32 units each.
* Full centralized programming and download support to individual unit controller.
* Real time viewing of process and set point data from any unit in the network.
* Centralized collection, logging, and reporting of process data from all units.
* On screen display of alarm conditions from any unit on the network.
* Full programming and reconfiguration from central computer.
* Capability to interface with other I/O boards for additional data collection.
* Facility for remote monitoring and diagnostics of connected devices.
* Multi-level password control with complete flexibility to configure user group access.

* High/Low Temperature Alarm.
* The PLC is programmed such that a High/Low Temperature Alarm willcause a System Shutdown output.
* PLC(Programing logic controller)
- Intergrated configuration, data management, and communication.
- Reliable and ergonomic operation by touch screen.
- TCP/IP via PROFINET/Ethernet.