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High Performance Two Stage Compression Centrifugal Water Chiller With PID Control

Categories Centrifugal Chiller
Brand Name: EuroKlimat
Model Number: EKDC
Certification: ISO9001, ISO14001, OHSAS18001, CRAA, CQC
Place of Origin: China
MOQ: 1
Price: Negotiation
Supply Ability: 100pcs per month
Delivery Time: 45 working days after received your payment
Packaging Details: Plywood
Product Name: High Efficiency Water Cooled Falling Film Centrifugal Chiller
Refrigerant: R134a
Cooling Capacity (kW): 4302-5378
Start Type: Directly (High voltage)
Power Supply: 6kV/3Ph/50Hz, 10kV/3Ph/50Hz
Control Panel: Touch screen
Control: PID
Modbus-RTU Communication: Option
Compressor Type: Centrifugal
Evaporator Type: Spray type (Falling film)
Condenser Type: High efficiency shell-tube
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    High Performance Two Stage Compression Centrifugal Water Chiller With PID Control


    High Efficiency Water-cooled Falling Film Centrifugal Chiller


    Specification


    Model EKDC1200EKDC1300EKDC1400EKDC1500
    Nominal CoolingCooling CapacityU.S.RT1223132514271529
    kW4302466150195378
    x104kCal/h370401432463
    Input PowerkW698760822879
    COPkW / kW6.166.136.116.12
    Chilled Water Flowm3/h740802863925
    Chilled Water Pressure DropkPa95959698
    Cooling Water Flowm3/h86093210051076
    Cooling Water Pressure DropkPa97989898
    Cooling*Cooling CapacityU.S.RT1194129313931492
    kW4199454948995249
    x104kCal/h361391421451
    Input PowerkW721785849908
    COPkW / kW5.825.795.775.78
    Chilled Water Flowm3/h722782843903
    Chilled Water Pressure DropkPa90909293
    Cooling Water Flowm3/h8469179891059
    Cooling Water Pressure DropkPa94959595
    CompressorType Two Stage Semi-hermetic Centrifugal
    Start Type Directly(High Voltage)
    Power Supply 6kV/3Ph/50Hz, 10kV/3Ph/50Hz
    CondenserType Shell-Tube
    Qty. 1111
    EvaporatorType Spray ( Falling Film)
    Qty. 1111
    Refrigerant R134a
    Control Type Water Temp. PID Control
    Chilled Water Pipe SizeDN350350350350
    Cooling Water Pipe SizeDN350350350350
    Insulation Material Rubber flexible closed foam insulation materials
    Unit Net Weightkg15500165001800018000
    Operating Weightkg17500186002000020000
    Rated Current
    (Nominal Cooling)
    6kVA768797104
    10kVA46525963
    Rated Current
    (Cooling*)
    6kVA7990100107
    10kVA48546165
    Starting Current6kVA494524555555
    10kVA319338359359

    Note:

    ■ Nominal cooling conditions: Chilled water entering/leaving Temp.:12/7℃,cooling water entering/leaving Temp.:30/35℃;

    ■ Cooling* conditions :Chilled water entering/leaving Temp.:12/7℃,cooling water entering/leaving Temp.:32/37℃;

    ■ Water side standard bearing pressure 1.0MPa;

    ■ Above evaporator and condenser water side pressure drop not including external water pipe and the other parts resistance;

    ■ Evaporator and condenser water pipe is flange connection;

    ■ Refer to unit nameplate or manual for job site power supply arrangement.


    Description


    EKDC series water-cooled falling film centrifugal chiller adhering to energy saving and environmental protection of the brand concept, can provide chilled water for central air conditioning system in hotel, hospital, pharmaceutical, theater, stadium, recreation center, commercial building, office building, industrial and mining enterprises; also can for textile, chemical, food and electronic research to provide chilled water for process usage.


    Features


    Environment Friendly Refrigerant


    R134a is environment friendly refrigerant, zero ozone depletion, safety & non-poison, un-burnable, green & environment friendly, comply with current development trend of international environmental protection.


    High Efficiency two-stage Compression Design


    Using high efficiency two-stage hermetic impeller compression increases efficiency more than 6%, lower relative speed, lower noise level, small vibration, higher reliability. Adopting three-dimensional flow high efficiency aluminum hermetic impeller design, greatly decrease air leakage; five-axis machining with higher precision, so can effective reduce impeller axis loss and separate loss, and greatly increase impeller efficiency. Than unit efficiency is better than national standards for energy conservation.


    Reliable Oil Recovery Device-Induced Jet Pump


    Through induced jet pump, on the condition of no energy loss make use of middle pressure steam flashing to achieve low pressure side oil recovery function.


    Refrigerant Flow Control Kit-Orifice Plate


    • Use orifice plate to control refrigerant flow. Each set orifice plate is designed and produced according to Centrifugal Chiller performance; so that can get the best match.

    • Orifice plate without any moving part, so that it is more reliable than the other throttle valves that need mechanical transmission


    Spray Type (Falling Film) Evaporator


    • The refrigerant into the evaporator is a heat exchange tube array on the spray direction. The liquid refrigerant in the tube wall to form a thin film flow down, also known as the falling film evaporator. Because only in the surface of the heat exchanger tube is covered with a layer of liquid refrigerant film, so the heat transfer effect is excellent

    • Using refrigerant circulation pump as the refrigerant throttling device from economizer to the evaporator, meanwhile pump out liquid refrigerant in evaporator bottom for recycling; in order to improve the refrigerant supply for evaporator upper copper pipe, so that can make sure that all copper pipes are covered by liquid refrigerant. Unit no need precise water level correction, only for general positioning, evaporator can play high normal performance.

    • Only evaporator bottom has a small amount of liquid refrigerant so that refrigerant charge is less, complying with environment protection.

    • After a large amount of refrigerant evaporation, lubrication oil concentrate in evaporator bottom; and then oil pump can draw out lubrication oil smoothly and then oil back to compressor oil groove.


    High Efficiency Advanced Centrifugal Compressor


    Centrifugal compressor has two-stage compression, internal using high strength alloy main shaft and hermetic impeller, using high precision gear, using non-flat high strength ball/roller bearing; so that emergency stop is ok. Unit start interval can be shortened to 10 minutes, and bearing life can up to 80000 hours.


    High Efficiency Condenser


    Condenser is divided into two parts, guide plate installed in the middle that can guide liquid refrigerant to the shell edge, can greatly improve lower copper pipe heat exchange efficiency. For large tonnage unit, this design is very effective, can reduce condensing Temp. 0.5~1℃.


    Authority Certificate


    We have industry’s most advanced test room for centrifugal chiller, this test room has passed China National Accreditation Committee audit qualification (CNAS L5123), strictly complying with GB/T10870-2001, GB/T18430.1-2007; testing capacity up to 3000RT. Before delivery, each unit has done strict full performance test to ensure unit performance.


    Advanced Control


    • Micro Computer Control

    • Touch Screen Panel

    • PID Control

    • Perfect Protection Function

    • Multiple Anti Surge Function

    • Reserve Connecting Port for Use


    Applications


    Hotel, Hospital, Pharmaceutical, Theater, Stadium, Recreation Center, Commercial Building, Office Building, Industrial & Mining Enterprises, Textile, Chemical, Food and Electronic Research.


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