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Hitachi Water-Cooled Industrial Chiller Rcuf470wzy Refrigeration Unit Hitachi Compressors Have 107 Patents1
Refrigeration Equipment, Hitachi Water-Cooled Industrial Chiller, Rcuf470wzy
Suzhou Huantai Electromechanical Equipment Co., Ltd.
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Product Description the specific price will be determined based on the selection.Thank you for your support and trust in Hitachi chillersProduct DescriptionHitachi Water Cooled Screw Chillers:MODEL CODE Hitachi Water Cooled Screw Chillers:UNIT STRUCTURE Hitachi Water Cooled Screw Chillers:HIGH EFFICIENCY AND ECO-FRIENDLY 1. Adopt the latest R134a high efficiency twin-screw compressor with great capability and higher stability.2. Equip refrigerant distributors for both inlet and outlet of evaporator improving refrigerant distributions and heat exchanger efficiency. The sub cooler is installed in the condenser, which could increase condensate depression and cycle efficiency.3. Flooded units equip with efficient oil + scavenge pump + oil level optoelectronic switch, which is simple, reliable and without operating risk of that the compressor is lack of oil.Flooded units equip with Application of Differential Pressure Flow Switches with effective anti-freezing capability Hitachi Water Cooled Screw Chillers:WZY SERIES OPERATION RANGE In 1972 we manufactured the first semi-hermetic twin-screw compressor in refrigeration areas. Until now we have delivered more than 200000 Hitachi twin-screw compressors to countries around the world. WZ Series adopt the latest Hitachi G-type compressors, which provides greater service to clientsINDEPENDENTLY DEVELOPED HITACHI G-TYPE SEMI-HERMETIC TWIN-SCREW COMPRESSOR 1. Independently developed new rotors decrease internal leakage of refrigerant during the compression process as possible.2. The rotors are manufactured by the most advanced abrasive process equipment and 3d measurement technique with high precision, the best operating clearance, the least friction, high plot ratio under the film seal, which could operate efficiently and reduce the vibration and noises. 3. Capacity Control: Stepless Adjustment 100%~25%.4. Double-Casing Design, reducing the operating noises.5. Capacity Adjusting Valve automatically resets to the minimum load decreasing starting current.6. Internal motor, without couplings, prevents discharge of refrigerant, using refrigerant cooling motor to lower fault rate and prolong the service life.7. Installed thermostats, protecting the motor and lube.8. Pressure differential oil supply (no oil pump), with the least components, ensuring operating reliability, easy to maintain.9. Internal exhaust non-return valve, effectively preventing reversion of rotors caused by compressed air back surging when stopping.10. Internal Suction Filter, filtering large grained impurity, protecting screw surface from damages.Compressor equipped with oil heater, oil sight glass, oil, repair hole and exhaust valve, convenient for maintaining. Hitachi Water Cooled Screw Chillers:Characteristics of condenser1. Perfect forced cooling design, enlarge cooling capacity, improve refrigerating efficiency.2. High efficiency warping tube, enlarge heat exchange area, enhance refrigerant disturbed flow of tube, improving heat exchange rate.Hitachi Water Cooled Screw Chillers:CYCLONE OIL SEPARATORThe adoption of centrifugal oil separator is one of the major features of the Hitachi unit. Compared with the traditional filter type oil separator, there is no resistance produced by the oil filter net, and the energy consumption of the compressor is reduced.The oil separation efficiency is greatly improved, the oil entering the heat exchanger is greatly reduced, the COP of the unit is greatly improved, and the lubrication of the compressor is effectively ensured.Hitachi Water Cooled Screw Chillers:100-125RT EVAPORATOR1. Dry Type evaporator, with low quantity of refrigerant sealed, has a good performance of oil return, dispensing with external oil pump or oil return filter. It has no easy damaged parts and has low costs of maintenance.2. The outlet and inlet of the refrigerant appear asymmetric in distribution. By utilizing the refrigerant, it increases efficiency of heat transfer.3. The inlet of the refrigerant, designed to mesh distributor, implement the most reasonable distribution of the refrigerant. 4. Multi-condensing units circulate independently, which makes good performance on standby applicationHitachi Water Cooled Screw Chillers:155-520RT EVAPORATOR1. Flooded-evaporator, with the latest researched heat transfer tube, increases the refrigerant's capability of distributing, and improves the efficiency of heat transfer.2. The outlet and inlet of the refrigerant appear asymmetric in distribution. By utilizing the refrigerant, it increases efficiency of heat transfer.3. The refrigerant distributor in the evaporator implement the most reasonable distribution of the refrigerant.Hitachi Water Cooled Screw Chillers: REFRIGERANT CIRCUITEach compressor can operate independently, with good standby application, including exhaust check valve, safety valve, pipe ball valve, filter, service valve, pressure switch, pressure sensor, thermistor and etc.ADVANCED MICROCOMPUTER CONTROL SYSTEMClear User-friendly LCD touch Console1. 7-inch LCD touch console, visual, simple, intuitive.2. The display makes it easy to view the current operating status and simplify the setting procedure.Various parameters can be confirmed at a glance. Regardless of operating status, the console allows you to set a variety of operation modes.3. A warning log function makes it possible to recall the latest 10 recent warning events.4. The user interface is provided in both English and Chinese, suitable for domestic and international market demand. Hitachi Water Cooled Screw Chillers: ACCURATE UNIT CONTROLCONTINUOUS CAPACITY CONTROLThe combination of Microcomputer Control System and Continuous Compressor Technology makes continuous capacity control and temperature adjustment more stable, partial load regulation more accurate. BALANCED COMPRESSOR OPERATIONMultiple compressors automatically balance operating time by each of themselves. EXTENSIVE FUNCTIOINSSupport linkage between the main machine and water pumps. Ensure operating safety. TEMPERATURE CONTROLAvailable to choose the inlet or outlet water temperature. Set point of control accuracy: ±0.5°C Satisfied various needs CENTRALIZED-CONTROL SYSTEM (SATISFYING INTELLECTUAL USAGE NEEDS ) MODBUS-RTU IS ALTERNATIVE, WHICH CAN CONNECT WITH THE BUILD MANAGEMENT SYSTEMThe thermostat delays the compressor starting time, avoiding starting frequently so as to protect theCOMPLETE PROTECTIONS SAFETY VALVEIf the pressure of condenser is too high, and all the other protectors are out of work, the safety valve will start to protect the units from being damaged. THREE-SECTION OVER-CURRENT PROTECTIONWhen the current of the compressor is higher than its set value, the overcurrent relay will turn off the circuit and the compressor will stop the service. OVER-HIGH EXHAUST TEMPERATURE PROTECTIONIf the temperature of the exhausting is too high, the liquid-side refrigerant will start to protect the compressor. DIFFERENTIAL WATER PRESSURE SWITCH PROTECTIONWhen the chilled water flow is too low or even cutoff, the water pressure differential will start to work and the unit will stop working. It will protect the evaporator from being frozen. COMPRESSOR MOTOR TEMPERATURE PROTECTIONThe thermostat is installed into compressor motor and could shut the motor down when its temperature is higher than normal.OIL HEATEREnsure the great lubricating performance. Prevent the oil foaming induced by Starting AVOIDING FREQUENTLY STARTING AND STOPPING OF COMPRESSORSThe thermostat delays the compressor starting time, avoiding starting frequently so as to protect the compressor. PROTECTION FOR OPTOELECTRICAL OIL LEVEL SWITCHStop and alarm when the compressor operates beyond 1min with oil shortage, which avoids risks caused by oil shortage. HIGH - PRESSURE PROTECTION& LOW - PRESSURE PROTECTIONThe protector turns on to make the compressor stop when the discharge pressure exceeds the set point or suction pressure is lower than set point. ANTI-FREEZING PROTECTIONThe anti-freezing protector turns on when the compressor temperature is lower than the set point, which avoids crystallization of refrigerating fluid in evaporator. REVERSING PROTECTING DEVICEThe device inducts the phases of power supply, which protects compressors from reversing operation caused by wrong phase of the power supplyProduct Parameters ModelRCUF125WZYRCUF155WZYRCUF210WZYRCUF260WZYRCUF310WZYRCUF365WZYRCUF420WZYRCUF470WZYRCUF520WZYNominalCoolingCapacitykW443.1548.9732.1914.91,0981,2811,4641,6471,830RT126.0156.1208.2260.2312.3364.3416.3468.4520.4CompressorQuantity211122222Starting current(A)211/211392509599392/392509/392509/509599/509599/599Ratedcurrent(A)154166221276166/166 166/213213/213213/267267/267Totalpower(kw)86.9198.19130.9163.7196.4221.1252.7284.4316.0Maximum current(A)230 400/400249331415249/249240/320320/320320/400400/400CondenserChilledwaterflow(m3/h)95.26118.0157.4196.7236.1275.4314.7354.1393.4water-sidepressure drops(kPa)54.787.890.192.387.891.093.395.697.8EvaporatorChilledwaterflow(m3/h)76.2094.41125.9157.4188.9220.3251.8283.3314.7water-sidepressure drops(kPa)70.350.250.250.259.261.263.265.367.3Unit capacity range %0,25-1000,25-1000,25-1000,25-1000,25-1000,25-1000,25-1000,25-1000,25-100RefrigerantTypeR134aQuantity ofcircuit211111111DimensionLength(mm)3,2163,3203,3203,3204,6934,6934,6934,6934,693Width(mm)1,0971,7001,7001,7001,7661,7661,7661,7661,766Height(mm)1,5682,2582,2582,2582,3182,3182,3182,3182,318Dry weightKg2,1903,4943,900 4,0607,0117,2937,5717,8128,052External dimensions RCUF310/365/420/470/520WZY DIMENSIONAL DATA
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