H.Stars Centrifugal Chiller/ Heat Pump Unit

DesignFeaturesandPerformance

H.Stars 5oSTD Centrifugal Chiller has two series: "Centrifugal Water-Cooled Chiller”&“Centrifugal Water Source Heat Pump Unit".14 standard specificationswithcoolingcapacityrange from 600RT

TwoStage Centrifugal Compressor

Surge avoidance two stage centrifugal compressor system; Economizer supply gas refrigerant for two stage centrifugal compressor, to increase cooling capacity up to 1 0 %

Intelligent identify surge area,adjust the rotate speed and IGVin time to avoid surge,more stable and reliable than normal centrifugal chiller.

The higher speed gear driven at,the smaller impeller in size.Small motor startingtorqueand short downtime.

The motor integrated with the compressor to keep low sound level and no riskof leakage.

Themotorcooledbyliquid refrigerantto keep low operating temperature and high efficiency.

Adoptshigh-strength ball bearing orrollerbearings to prevent compressors from emergency shutdown.

Great Compressor Oil System

Adopt independentoil return.system(ejection oil pump) toguaranteetheoilreturnintimeunderanyload.
Built in oil cooler,chilled byrefrigerant to maintain safety and reliability.
Qil pump install into compressor oil sump,eliminating the risk of oil pump leakage.

Integrated Control

Fully automatic microcomputer control system with touch screen,clearly displays various operational dataand timely feedback on various maintenance information,no fulltime operators are needed.Control system available to be connected to the user's central control system for engineers to monitor and operate the chiller freely.

Model Nomenclature

H.StarsCentrifugalChiller/HeatPumpUnit

to 280oRT,and lowest outletchilled water temperature is 5 ^ { \circ } \mathsf { C } .Customized serviceavailable baseon client requirement,suchasanti-corrosion,seawaterchiller with different Power Supply.

Falling Film Heat Exchanger

Adopt self-developed high efficiency FallingFilm Type Heat Exchanger.Electronic expansion valve and liquid level sensor to control the liquid refrigerant level to ensure the evaporator always in the high effciency heat exchange state.

Condenseradopts liquid droplet distribution technology to ensure the condenser heat exchange tubeshighly eficient and sufficientto heat transfer.

COP upto 6.3

HeatRecoverySystem

Own heat recovery patent. The waste heat generated during therefrigeration process isrecovered byadopting ourown patentedheatrecoveryunit.Whenthechillerisadopted heatrecoverysystem,thechillernotonlyprovideschilled Waterbutalsoalargeamountoffreehotwater.

Refrigerant

Adpotcurrentworld'smainstream environmentally friendly refrigerantR134a,the Ozone Depletion Potential (ODP) is 0. Positive pressure refrigerant to prevent air entering the system.
The machine room only needs a general ventilation equipment for cost saving.

Unique Throttling Technology

Adpotself-developedmulti-stagethrottlingdeviceswith self-adaptive function toadjust the refrigerant supply timely undervariable load andworking conditionstomaintain the chiller unit staying at the highest efficiency stage.

Water Cooled Centrifugal Chiller

Standard Configuration

Centrifugal Water-Cooled Chiller,adopt two stage centrifugal compressor,equipped with self-developed high-efficiency falling film evaporator,COPup to 6.3 withRl34arefrigerant.Suitableforlargerindustrialand commercial use.Cooling capacity:20ookW\~10000kW, chilled water outlet temperature range: 5 ^ { \circ } { C } - 2 0 ^ { \circ } { C } Optional voltagesystems:380V/6kV/6.6kV/10kV.

WaterSource Centrifugal HeatPump Unit

Standard Configuration

Water Source Centrifugal Heat Pump Unit,adopting special heat pump centrifugal compressor,equipped with selfdeveloped high-efficiency falling film type evaporator, CoolingCOPcanreach7.7andHeating COPcanreach 6.0 by using Rl34a refrigerant.Suitable for larger industrial and commercial premises.Cooling capacity range: 2000kw\~7000kw,heating capacity range:2000kW-7000kW. Thelowest chilled water outlet temperature:5 ℃,highest hotwateroutlet temperature: 5 0 { \dot { C } } .4 voltage systems:380V, 6kV,6.6kV，10kV.

Compressor

Two-stage compression centrifugal compressor, internal adopts highstrength alloyspindleand high-strength aluminum alloymaterial enclosed impellerand high-precision gear,with high-strength ball/ roller bearing to prevent compressors from emergency shutdown Startup interval shortenedto fO minutes,bearinglifeup to 80,000 hours.

FallingFilm Evaporator

Therefrigerant enters the evaporator spraying downward from the uppersideof the heat exchange tubearray,and the liquid refrigerant formsa film flowing downward on the tube.Sinceonlya layer of liquid refrigerant film is coated on the surface of the heat exchange tube,theheat transfereffectisexcellent.

The shell is made of Q345R steel,the heat exchange copper tube is double-sided enhanced high-efficiencytubewith optional variable tubematerialsand thicknesses.Thespraytrayismadeof stainless steel andis produced by self-owned CNC machine to ensure the quality of liquid distributor structure of falling film evaporator.

It only needs a small amount of liquid refrigerant at the bottom of evaporator, so the refrigerant charging capacity of the unit issmall and meets environmental protection requirements.

Therefrigerant vapor does not need to be superheated,and the evaporationtemperaturecanbegreatlyimproved.

After the refrigerant evaporates and returnsto the compressor, the compressoroilwillalwaysflowdownwardand gatheratthebottom of the evaporator to easily return oil.

HighEfficiencyCondenser

The shell is made of Q345R steel and the heat exchange copper tube isdouble-sided enhanced high-efficiencytube used to condense the high-temperature and high-pressure refrigerant in the refrigeration system into liquid,with certain degree of sub-cooling,to improve the efficiency of the chiller.

The built-in liquid refrigerant distributor device ensures the liquid refrigerant after condensation automatically separated from the heat exchange tube,ensuring sufficient contact between the heat exchange tubeand the gaseousrefrigerant,and greatly improving the heat exchange efficiency of the copper tube.For large capacitychiller units,thistechnologyis veryeffective,reducingthecondensation temperature 1 ^ { \circ } { C }

Economizer

Theshell is made of Q345R steel and the heat exchange copper tube adopts internal grooved copper tubes also knownas“micro fin tube” to facilitate more efficient heat transfer than smooth coils.Adopt part ofrefrigerant from evaporation tocool the liquid refrigerant after condensing to increase the effect of super cooling and make it more efficient and energy saving.

HMI(HumanMachineInterface) Control Center

Product Features and Functions

Adopts high-integration single-chip microcomputer greatly improvestheanti-interferenceabilityof thesystem.

TheHMI directly displays the fault content to cooperate with thesimple operationinterfacetotimely feedback various maintenance information.

The control system can be connected to the user's central control system (BMS) to monitorthechillerrunningsituation freely.

Protection control on the external power supply system with Over-voltage,under-voltage, three-phase unbalance,and lackphase protection.

And the chiller has built in more than 3O protection functions toprovide comprehensive protection for the safe operation of the unit.

The chiller has advanced multi-anti-surge function,which combines prevention, control and alarm to guarantee the unit meet the customer's cooling capacity within the safe operation range.

Reserveuserconnectioninterface toprovidecloud services.

Control center

Equipped with 10-inch touch panel.

Built-in electronic expansion valve drive module to ensure accurate liquid supply.

Three-phase voltage and current are displayed and highly integrated with the controller.

Theunit can be connected to each other to form module control,group control orsingle control,it is freely switch to each control mode.

Accurately detect the operating current of the compressor and keep abreast of the operating status of the unit.

The control logic changes to different operating strategies based on the detected information to ensure stable operation of the unit.

The high-precision temperature and pressure detecting device hasatemperature detectionaccuracy at 0 . 0 1 ^ { \circ } { C } and a pressure accuracyat 0 . 0 0 1 { M P a }

Integrated communication interface foraccess to cloud servers.

StandardMODBUSinterface，compatiblewithvarious engineering building control systems.

InnovativeLANinterfaceenablesmultipleunittobe connectedintoanetworktooptimizeunitoperation andextendthe lifeof thechiller.

R_LAN IPaddress knobisadopted,differentmodule IPaddressesareeasiertochangethroughtheknob at thesite.

Thewire controller can achieve switching without stoppingthechillerwhich ismore flexible.

English/Spanish/French orother language display available,and it displays the content of unit operation, fault conditions,built-in operating instructions,etc.to facilitate the use of the unit.

Optional hydraulc module control for engineers,easy to operate and use friendly.

HMI Control Center (continued)

Controllerinterface

Adpots1O inch touch screen,the display withalarge screen and true color quality is more delicate and clear for operators to use.The operation screen is simple and exquisite,showing alarge amount of information and easy to operate.And it's designed with USB interface,easy to upgrade or download the chiller history running data chart.

Function Display

Variable Working Condition Curve (Cooling)

Cooling Capacity Curve

Variable Working Condition Curve(Heating)

Heating Capacity Curve

Power Supply Curve

50STDSeriesStandard Centrifugal ChillerTechnical Parameters

Refrigerant: R134a Powersupply:380V-3N-50Hz

50STD series Centrifugal Water Source Heat Pump Technical Parameters

tefrigerant:R134a Powersupply:380V-3N-50Hz

50STDSeriesStandard Centrifugal ChillerTechnical Parameters

Refrigerant:R134a Powersupply:460V-3N-60Hz

50STD series Centrifugal Water Source Heat Pump Technical Parameters

lefrigerant:R134a Power supply: 460V-3N-60Hz

Single Compressor Unit

Double CompressorUnit

Electrical CabinetControl

Non-standardVoltageunit

HighVoltageUnitElectricalParameters

Note:
1.Above wiring diameter according to the chiller standard working conditions under ambient temperature 3 5 ~ ^ { \circ } { C } ；Cableworking temperature at 6 5 ^ { \circ } { C } ,erect surface wiring.
2.Cablematerialhastobecoppercable.Whentheworkingconditionorenvironmentchanges,thecoppercableshouldbeproperly enlarged.
3.High-voltagechillercableshouldcomplywithICE183andDL401ofHigh-voltagecableselection guidelines standard. 4.Above electrical parameters are theoreticalcalculationvalues;Please refer to the actual parameters.
5. Grounding resistance { < } 8 \Omega _ { \mathbf { λ } } （204号

Non-standard Voltageunit

High voltage wiring instructions

(1)Cablelisthepowersupplycable(three-phasefour-wire)fromthecustomer'shig-voltagepowerdistributioncabinettothe powercabinet.Forthecable specificationsandcablediameterrequirements,pleaserefertotheelectricalparametertable.

(2)Cable2isthepowercablefromthepowercabinettothemainmotorofthecentrifugalunit.Forthecablespecificationsandcable diameter requirements,please refer to the electrical parameter table.

(3)Cable3istepowercordthrephasefve-wire)fromteclienttoteentrifugalunitcontrolcabinetItisrequiedtobeafive coresheathedwirewithacablediameterof 2 . 5 {mm } 2

Note:The control cabinet power supply is provided by the customer.

(4)Cable4isthesignalcontrolinefromthepowercabinettothemaicontrolcabinetofthecentrifugalunit.Itisrequiredtobea shieldedwireortwisted pairwithawirediameterof 1 . 0 {mm } 2 ormore.

(5)Cable5isasignalcontrolinefromthemaicontrolcabinetofthecentrifugetothewaterpumpcontrolcabinetandremote switchgear.It isrequiredtobeashieldedwireortwistedpairwithawirediameter of 1 . 0 {mm } 2 ormore.

Note:The pump control cabinetis provided by the customer.

(6)Thepowercableandpowerlead mustbeconfiguredseparatelywithsignalcontrolcableand mustnotplaceinthesamecable duct.
(7) The power cabinet wiring should be in and our from the top.
(8)All the above wiring is provided by the customer.

H.StarGroup/SuperiorHVACProductsManufacturedbyH.Stars

Optional Parts (continued)

(VFD)VariableFrequencyDrivercentrifugal unit

VFD Centrifugal chilleradoptsa variable frequency drivermotor to achieve variable frequency operation of the compressor.Significantly improves the energy efficiencyofthechilleratpartial load.Theunitcan

Energy Efficient

Adopt international brand variable frequency drive technology, integrated partload value (IPLV) up to10.

StableandReliable

The VFD centrifugal unit adopts the motor speed to control the output to achieve true stepless control to improve compressor reliability.Liquid coolingVFDrunsatlowtemperature,more stable.

Small startingcurrent

VFD water chiller with soft starting to reduce the impact of starting current;

TheVFD has its own DC reactorto minimize harmonic interference;

Optional low-harmonic filter.VFD input power meets the IEEE-519 specification forharmonicdistortionwith harmonic filter over-temperature protection and capacitance switching.

Precisetemperaturecontrol

The water temperature control within ± 0 . 3 ^ { \circ } { C } to maintain a high-precision temperature control standard.

VFD parameters

reachahighervalueatboth full loadcoefficient of

Starting current curve comparison between VFD and Star Delta

Optional Parts (continued)

HeatRecovery Unit

Heatrecoverytechnology,istorecycle partoforall.oftheheat.capacity produced during therefrigeration processbyheatrecoveryunit,toprovide customers free hotwater from 4 5 ^ { \circ } \mathsf { C } to 5 5 ^ { \circ } \mathsf { C } ，suitable for hotels,hospitals, schools and other places of large public institutions.

Green to environment and energy saving.

H.StarsCentrifugalChiller/HeatPumpUnit

Heatrecovery unit、patent number:ZL03223588.7

Heat Recovery technology

H.Stars Group has been engaged in researchand practiceofheatrecovery technologyandapplicationforalongtime andhasaccumulated alotof experience inheatrecoveryandobtainedanational patentofheatrecovery.

Free hot water supplied all year around, costand energysaving,itnotonlyreduces the heat pollution totheenvironment causedby condensation heat from the chiller,butalsodecreasestherunningcost and the noise from the cooling tower.

China machinery industry science and technologyaward

Chinamachinery industryscienceand technologyaward

Heatrecoverychart

Optional Parts (continued)

HeatExchangerTube

Condenser HeatExchangerTube

EvaporatorHeat ExchangerTube

ImportantNotice:

Heat exchanger is the key components of the chiller unit,itsmanufacturing technologydirectlyaffects the qualityof the product.Also,the heat exchange tube, whichis the only component of the heat exchanger in contactwiththeambient,closelyaffectsthelifeofthe unit.The thickness and material of the heat exchange tubeare very important.Customers can choose the suitable material and thickness of heat exchanger tube according to the air and water quality.

Cloud service (remote monitoring)

CentralA/Ccloudservicesystem

Cloud service value:
Remote control adjustment
Remote monitoring
Remote upgrade
Fault warning
Remote diagnosis
Product distribution management
Historical data analysis

InstallationEnvironment

1.Theunitshouldavoidaccess tosourcesofignitionandflammablematerials.If it isinstalled together withaheating elementsuchasaboiler,payagreatattentiontothe influenceofheatradiation.

2.Itisbesttoinstallinawell-ventilatedroomwhichtemperaturebelow 4 5 ^ { \circ } \mathsf { C } and the relative humidityof the environment should bebelow 90 % .Installed or stored outdoors in the openairare strictlyprohibited.

3.Install ina place with less dust (dust is the cause ofElectrical fault).

4.The installation site should be well lit for easy maintenance and inspection.

5.Inordertomeet theneedtomaintain,overhaulandcleantheevaporator-condenserheatexchange tubes,asuffcientspace around theunitare verynecessary.

6.Inordertofacilitatetheliftingandoverhaulofthemachine,acraneorajibcraneshouldbeinstalldandmakesurethat themachineroomisofsufficientheight.

7.There should be a good drainage system around the unit and throughout the machine room.

8.Avoid direct sunlight.

Single Compressor chiller Connection Diagram

Double Compressor Chiller Connection Diagram

Wiring Diagram

H.Stars Group

H.Stars(Guangzhou) RefrigeratingEquipmentGroupLtd., establishedin1992,inEconomic&TechnologicalDevelopment ZoneofGuangzhou,China,composedof8subsidiariesto provide one-stop solutionto HVAC customers, specializing inR&D,iogaoA grows,H.Starsgroup expandsitsbusinessglobally and has soldto53differentcountries.H.StarsGroupisawardedwith "NewandHighTechnologyEnterpriseinGuangzhou"andhas become the trainingbaseof many universities both inChinaand abroadviatechnologycooperation.

H.StarsGroupsuppliesan extensivelineofCommercial and Industrial Energy SavingHVAC products including: AirCooledChiller,WaterCooledChiller,IndustrialChiller, CentrifugalChiller,Magneticoilfreecentrifugalchiller,MultifunctionChiller,HotWaterUnit,HeatRecoveryUnit,Heat PumpUnit,ondensingUnit,GlycolChiller,hellandube HeatExchanger,AirHandlingUnit,FanCoilUnit,ooling Tower,etc.alltypeofHVAC products.

H.Stars Group has beendedicated in qualityand innovationand istechnically strongincommercial and industrialapplicationasaHVACmanufacturer.Apartfrom obtainingplentyofenergy-savingproductpatents,H.Stars GrouphasachievedCEcertificationsforPressureVesseland standardchillers,BR1,ASME,IO9001:2000,IO14001:2004 and other certifications.

A goodreputationofH.StarsGrouphasbeenbuiltand deliversa full HVAC servicetocustomersworldwide.Our productsarewidelyapplied inindustriesforcoolingofLaser generators,Weldingelectrodes,Cuttingmachines,Eectric sparkmachines,Extrusion process,Hydraulic System, Electroplating,Ultrasonic Cleaning,IonPlatingfilm,Electronic facility,Electrical appliance components,CompressedGas Dehumidification,Dairyand BeverageCoolingprocessing, Pharmaceuticaland Biological products,Medical equipment, GlassCoating,TemperedGlassandCultivationSeaFood.

H.StarsGroupwillcontinuetodevelopenergysavingand environmental friendly equipment to create "The Eficiency Planet"as our obligation.By focusing on customers'needs and wantsinordertocontributemoreourpotentials,fromnowon, H.StarsGroupwill hand in handwith youto bea shining star in theforeseeable future.

H.Stars (Guangzhou) Refrigerating Equipment Group Ltd

Address:No.1Guoyuan4thRoad,Guangzhou Economic&Technological Development Zone,HuangPuDistrict,Guangzhou,China ZipCode510530