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EWWD 340-C19 CJYNN. EWWD 340-C19 CJYNN. Water Cooled Chiller 334 kW ÷ 1893 kW Single Screw Compressor. TABLE OF CONTENT. Unit position into the range Operating Limits Compressor features Refrigerant Circuit Dry-eXpansion shell & tube evaporator Control & remote control Unit delivery

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Presentation Transcript
slide2

EWWD340-C19CJYNN

Water Cooled Chiller

334 kW ÷ 1893 kW

Single Screw Compressor

table of content
TABLE OF CONTENT
  • Unit position into the range
  • Operating Limits
  • Compressor features
  • Refrigerant Circuit
  • Dry-eXpansion shell & tube evaporator
  • Control & remote control
  • Unit delivery
  • Options summary
    • Standard options
    • Options on request
slide4

A. UNIT POSITION INTO THE RANGE (1/3)

EWWD-CJYNN: unit efficiency level

4.70

550

4.60

C19

950

C15

C18

480

4.50

C14

900

C17

C13

400

C16

C12

800

4.40

C11

EER

750

C10

4.30

4.20

700

340

4.10

4.00

0

200

400

600

800

1000

1200

1400

1600

1800

2000

kW

slide5

A. UNIT POSITION INTO THE RANGE (2/3)

EWWD-CJYNN: cooling range

1 Compressor

2 Compressors

3 Compressors

4 Compressors

2000

0

500

1000

1500

kW cooling @ Evap. 12/7°C - Cond. 30/35°C

slide6

A. UNIT POSITION INTO THE RANGE (3/3)

EWWD-CJYNN: sizes distribution

slide8

C. COMPRESSOR FEATURES (1/3)

EWWD-CJYNN – Single Screw Compressor

“ Frame4 ” single screw compressor

  • axial balanced loads
  • radial balanced loads
  • 2 specular compression cycles
  • infinitely variable cooling capacity control
  • external oil separator
  • direct driven screw (no gear)
  • 6 electrical terminals for Y-D as standard
  • fully semi-hermetic design
  • composite material on gate rotors

compression

suction

discharge

slide9

C. COMPRESSOR FEATURES (2/3)

EWWD-CJYNN – Single Screw Compressor

better chilled water stability

radial balancing

axial balancing

Stepless slide valve (oil controlled) to change compressor capacity to match exactly the plant thermal request

Composite material (carbon base composition) to improve compressor reliability and energy performances

“ Frame4 ”

slide10

C. COMPRESSOR FEATURES (3/3)

EWWD-CJYNN – Single Screw Compressor

External high efficiency (98%) oil separator.

“ Frame4 ”

Fully semi-hermetic design to allow ordinary maintenance and to replace easily each component if necessary

Six electrical terminals to allow as standard a star-delta (Y-D) compressor start

slide11

D. REFRIGERANT CIRCUITS

EWWD-CJYNN with 3 refrigerant circuits: 3 compressors, 3 expansion valves, 3 condensers, 3 evaporating sections in the evaporator’s shell, 3 dry-filters

slide12

E. Dry-eXpansion shell & tube evaporator

copper tube internally enhanced

  • Higher water volume content (Vs PHE Plate Heat Exchanger)
    • More thermal inertia for the chiller
    • Smaller external water tank installation (when required)
    • No freezing risk at any chiller load
    • No “water hammer” phenomena damage
slide13

F. CONTROL & REMOTE CONTROL (1/4)

EWWD-CJYNN – Electrical Panel Features

  • Main switch: only on OFF position, it allows the access inside the panel.
  • Control keypad and display are located outside on the front door.
slide14

F. CONTROL & REMOTE CONTROL (2/4)

EWWD-CJYNN – Microprocessor Control “Microtech II C Plus”

Motherboard with microprocessors

  • Unit Controller fully programmed and engineered by Daikin on Carel hardware
  • P.I.D. logic (proportional, integrative, derivative)
  • Compressor regulated according leaving evaporator water temperature (LEWT) to match customer set-point within ± 0.2°C
  • Easy visual interface with 4 rows and 20 characters display and 15 keypad
slide15

F. CONTROL & REMOTE CONTROL (3/4)

EWWD-CJYNN – Microprocessor Control “Microtech II C Plus”

STANDARD

"demand limit" or

"set-point reset"

"current limit"

from external signal

SPN

"soft load"

  • High value control functions implemented as standard into the logic
slide16

F. CONTROL & REMOTE CONTROL (4/4)

EWWD-CJYNN – Microprocessor Control “Microtech II C Plus”

  • Easy integration into building automation systems via separate digital connection for unit start/stop and 4-20 mA signals for chilled water reset and demand limiting;
  • Communications capabilities for remote monitoring, changing of setpoint, trend logging, alarm and event detection, via a compatible IBM-PC with PlantVisor 1.0 software;
  • BMS communication capability via Modbus, BacNet & LonWorks protocol
  • Remote communication via modem/GSM (up to 8 chillers with Gateway)
  • Compatibility with Daikin CSC II (Chiller SequencingControl)
slide17

G. UNIT DELIVERY

EWWD-CJYNN – Unit delivery, moving and lifting

  • Unit is delivered EXW (Ex works);
  • Each unit is tested at full load before shipping;
  • Unit handling must be according to IOM manual.
ewwd cjynn options summary
Standard options

Heatpump version

Brine version

Dual setpoint

Thermal relays compressors

Under/over voltage controller

Victaulic on condenser & evaporator

Flow switch for evaporator

Setpoint reset and demand limit

Alarm from external device

Rubber type antivibration mounts

Main switch

Electronic Expansion valve

EWWD-CJYNN: OPTIONS SUMMARY

Available options

  • OPPF: Power factor 0.9
  • OP12: Suction stop valve
  • OP57: A/V meter
  • OPSS: Soft starter
  • OPNI: Cu/Ni heat exchanger
  • OPTR: Heat Recovery
  • OPPR: Partial Heat Recovery
1 options as standard 1 2
1. OPTIONS AS STANDARD (1/2)

FLOW SWITCH – Supplied separately to be wired and installed on the evaporator water piping (by others).

COMPRESSOR THERMAL OVER RELAYS– Safety devices against compressor motor overloading in addition to the normal protection envisaged by the electrical windings.

ALARM FROM EXTERNAL DEVICE –Microprocessor is able to receive an alarm signal from an external device (pump etc…). User can decide if this alarm signal will stop or not the unit.

UNDER/OVER VOLTAGE CONTROLLER –Phase monitor to control the minimum and maximum voltage value that the user can set.

1 options as standard 2 2
1. OPTIONS AS STANDARD (2/2)

RUBBER TYPE ANTIVIBRATION MOUNTS – Supplied separately, these are positionned under the base of the unit for “floor installation”.

ELECTRONIC EXPANSION VALVE – It proposes features that makes it unique: short openning and closing time, high resolution, positive shut-off function to eliminate use of additional solenoid valve, highly linear flow capacity, continous modulation of mass flow without stress in the refrigerant circuit and corrosion resistance stainless steel body.

2 options on request 1 2
2. OPTIONS ON REQUEST (1/2)

OPSS:Soft start –Electronic starting device to reduce starting current. An overload protection is included (no need of compressors thermal relays).

OP12: Suction line shut off valve – Suction shut-off valve

installed on the suction port of the compressor to facilitate

maintenance operation.

OPPF: Capacitor power factor correction - Installed on the electrical control panel to ensure it conforms to the plant rules (Daikin advises maximum 0,9).

2 options on request 2 2
2. OPTIONS ON REQUEST (2/2)

OP57: Ammeter and voltmeter– Digital meters of unit drawn amperes and voltage values, installed on the electrical control panel.

OPTR:100% total heat recovery – Produced with tube bundle placed in a single shell with the water condensers heads are provided with 2 connections for entering/leaving heat recovery water and 2 separate connections for condensing water.

OPPR:Partial heat recovery – Produced with plate to plate heat exchangers installed on discharge side of compressor gas. These allow hot water to be produced up to a maximum temperature of +50°C