| Customization: | Available |
|---|---|
| After-sales Service: | Local/Official |
| Warranty: | One Year |
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
UNIT STRUCTURENOMENCLATUREVALUE PROPOSITION
Considering that an air conditioning system may use 30%~40% of a building's annual energy consumption, chiller efficiency really matters. During day-by-day operations, it operates up to 99% of the time in off-design conditions. Typically, operating costs will reach 8-10 times the initial chiller cost; investing in real-world efficiency is one of the fastest ways to save money when balancing your building's budget.With advanced, unit-mounted and inverter-driven technology, the RCUF-WVY series is designed for high performance, both at full load and at part load. Its exceptional efficiency performance at part load is up to 9.93, surpassing the top GB in China and ASHRAE standards. The yearly system efficiency is around 20-30% higher than the transitional fixed speed chiller, helping customers to significantly save energy consumption, with the payback year coming in less than 2 years in most cases.
The RCUF-WVY variable speed screw chiller will be factory-packaged and include the evaporator, condenser, compressor, VFD panel, touchscreen central controller and all interconnected unit piping and wiring. The chiller will be painted, pre-charged with oil and R134a refrigerant prior to shipment, and will be packaged to protect the unit during whilst in transit.USER FRIENDLY INTERFACESMART CAPACITY CONTROL
Continuous capacity control
Stepless capacity control is achieved by use of variable speed control and a slide valve in 20-50Hz frequency range to provide fully modulating control from 20% to 100% (single compressor unit) and 15% to 100% (dual compressors unit) of full-load, which allows precise capacity matching of building load and reducing unit power input, especially at part-load.
Balancing compressor operation time
Multiple compressor units automatically balance the running time of each compressor.
Water temperature control
Both entering and leaving water temperature control are available for different application needs. The temperature control accuracy can reach ±0.5°C
| Temp. Control | Features | Application |
| Leaving Water Temp. Control |
Precise leaving water temp. |
Industry application (process cooling) For those require precise temp control |
| Entering Water Temp. Control |
Higher part load efficiency |
Comfortable cooling (Big building load variation) No need precise water temp those have big buffer tank design. |
REMOTE CONTROL / COMMUNICATION
| Model | RCUF155WVY | RCUF210WVY | RCUF260WVY | RCUF310WVY | |
| Capacity | - kW | 548.9 | 732.1 | 914.9 | 1,098 |
| - USRT | 156.1 | 208.2 | 260.2 | 312.3 | |
| Power Input | - kW | 93.6 | 125.3 | 157.6 | 187 |
| Full load COP | 5.864 | 5.845 | 5.804 | 5.873 | |
| IPLV (AHRI condition) | 9.136 | 9.109 | 9.084 | 9.121 | |
| Capacity Control Range | 20-100% | 20-100% | 20-100% | 15-100% | |
| Refrigerant | R134a | ||||
| Compressor | - Type | Inverter driven screw type | |||
| - Quantity | 1 set | 1 set | 1 set | 2 set | |
| - Model | HP 150HP | 200HP | 250HP | 150HP×2 | |
| Evaporator | - Type | Shell-and-Tube Type, Flooded Type | |||
| - Water Flow Rate | 94.41 m³/h | 125.9 m³/h | 157.4 m³/h | 188.9 m³/h | |
| - Pressure drop | 50.4 kPa | 50.4 kPa | 50.4 kPa | 67.6 kPa | |
| - Water Connection | DN150 | DN150 | DN150 | DN200 | |
| - Max. water-side operating pressure | 1.0 Mpa | 1.0 Mpa | 1.0 Mpa | 1.0 Mpa | |
| Condenser | - Type | Shell-and-Tube Type | Shell-and-Tube Type | Shell-and-Tube Type | Shell-and-Tube Type |
| - Water Flow Rate | 118.0 m³/h | 157.4 m³/h | 196.7 m³/h | 236.1 m³/h | |
| - Pressure drop | 63.0 kPa | 63.0 kPa | 62.8 kPa | 75.7 kPa | |
| - Water Connection | DN150 | DN150 | DN150 | DN200 | |
| - Max. water-side operating pressure | 1.0 Mpa | 1.0 Mpa | 1.0 Mpa | 1.0 Mpa | |
| Flow Control | Orifice Plate | ||||
| Electrical Data | - Nominal power supply | (AC3Φ) 415V/380V, 50Hz | |||
| - Start-up method | VFD start | ||||
| - Control power supply | (AC1Φ) 240V/220V, 50Hz | ||||
| - Nominal unit current draw | 154 A | 206 A | 259 A | 154/154 A | |
| - Maximum unit current draw | 231 A | 309 A | 389 A | 231/231 A | |
| Dimension | - Length | 3,320 mm | 3,320 mm | 3,320 mm | 4,691 mm |
| - Width | 1,780 mm | 1,780 mm | 1,780 mm | 1,823 mm | |
| - Height | 2,258 mm | 2258, mm | 2,258 mm | 2,318 mm | |
| Net Weight | 3,944 kg | 4,350 kg | 4,510 kg | 6,822 kg | |
| Model | RCUF365WVY | RCUF420WVY | RCUF470WVY | RCUF520WVY | |
| Capacity | - kW | 1,281 | 1,464 | 1,647 | 1,830 |
| - USRT | 364.3 | 416.3 | 468.4 | 520.4 | |
| Power Input | - kW | 221.1 | 253.2 | 277.3 | 318.3 |
| Full load COP | 5.793 | 5.781 | 5.939 | 5.749 | |
| IPLV (AHRI condition) | 9.118 | 9.091 | 9.062 | 9.078 | |
| Capacity Control Range | 15-100% | 15-100% | 15-100% | 15-100% | |
| Refrigerant | R134a | ||||
| Compressor | - Type | Inverter driven screw type | |||
| - Quantity | 2 set | 2 set | 2 set | 2 set | |
| - Model | 200HP+150HP | 200HP×2 | 250HP+200HP | 250HP×2 | |
| Evaporator | - Type | Shell-and-Tube Type, Flooded Type | |||
| - Water Flow Rate | 220.3 m³/h | 251.8 m³/h | 283.3 m³/h | 314.7 m³/h | |
| - Pressure drop | 69.5 kPa | 71.5 kPa | 73.6 kPa | 75.6 kPa | |
| - Water Connection | Flange | ||||
| - DN | DN200 | DN200 | DN200 | DN200 | |
| - Max. water-side operating pressure | 1.0 Mpa | 1.0 Mpa | 1.0 Mpa | 1.0 Mpa | |
| Condenser | - Type | Shell-and-Tube Type | |||
| - Water Flow Rate | 275.4 m³/h | 314.7 m³/h | 354.1 m³/h | 393.4 m³/h | |
| - Pressure drop | 77.3 kPa | 79.3 kPa | 82.1 kPa | 83.2 kPa | |
| - Water Connection | Flange | Flange | Flange | Flange | |
| - DN | DN200 | DN200 | DN200 | DN200 | |
| - Max. water-side operating pressure | 1.0 Mpa | 1.0 Mpa | 1.0 Mpa | 1.0 Mpa | |
| Flow Control | Orifice Plate | ||||
| Electrical Data | - Nominal power supply | (AC3Φ) 415V/380V, 50Hz | |||
| - Start-up method | VFD start | ||||
| - Control power supply | (AC1Φ) 240V/220V, 50Hz | ||||
| - Nominal unit current draw | 156/208 A | 208/208 A | 202/253 A | 261/261 A | |
| - Maximum unit current draw | 234/312 A | 312/312 A | 304/380 A | 392/392 A | |
| Dimension | - Length | 4,691 mm | 4,691 mm | 4,691 mm | 4,691 mm |
| - Width | 1,823 mm | 1,823 mm | 1,823 mm | 1,823 mm | |
| - Height | 2,318 mm | 2,318 mm | 2,318 mm | 2,318 mm | |
| Net Weight | 7,195 kg | 7,510 kg | 7,775 kg | 8,040 kg | |
Notes:
The above parameters are based on: outlet temperature of chilled water: 7 ºC; Chilled water flow rate: 0.172 m ³/(h.kW); Cooling water inlet temperature: 30 ºC,cooling water flow rate: 0.215m ³/(h.kW)- The fouling factor of evaporator is 0.018m²·°C/kW, the fouling factor of condenser is 0.044m²·°C/kWNotes:
1. The steel plate, foundation bolt, nut, bushing and washer required for foundation installation should be prepared by the customer. Please refer to the specifications in the steel plate dimension drawing.
2. This Chiller has a vibration isolation pad. You may refer to the drawing to install two vibration isolation pads, one on the top of the other.
3. Please keep the foundation flat and apply proper waterproofing. Refer to the foundation drawing to design your drainage system.Notes:
1. The steel plate, foundation bolt, nut, bushing and washer required for foundation installation should be prepared by the customer. Please refer to the specifications in the steel plate dimension drawing.
2. This Chiller has a vibration isolation pad. You may refer to the drawing to install two vibration isolation pads, one on the top of the other.
3. Please keep the foundation flat and apply proper waterproofing. Refer to the foundation drawing to design your drainage system.Notes:
1. Refer to table for recommended clearance for inspection, commissioning and maintenance on jobsite.
2. The front side of the unit refers to the display side of the control box.
3. For special design units, please contact your local sales team for further information.
Huantai Electromechanical Equipment Co., Ltd. is a first tier agent and maintenance provider of Hitachi chillers (ice water units) established by Hitachi Group in China.
Our main product include: Water cooled screw chillers, Air cooled screw chillers, Scroll type air cooled water chillers, scroll type water cooled chillers, glycol chillers, low temperature industrial chillers, cooling tower, pumps and etc professional refrigeration equipment. Widely used in Plastic injection, Extrusion, Blow molding, Brewing, Chemical, Pharmaceuticals, Food process, Dairy Process, Beverage, Concrete mixer, CNC, Laser and etc field. Hitachi chillers are exported to America, Europe, Southeast Asia, the Middle East, Africa and other regions and countries, have won unanimous praise from our users. As the sales representative of Hitachi Group in the field of central air conditioning and chillers in China, we have grown into a professional Hitachi chiller sales enterprise. Our company′s products are based on Hitachi technology, especially the heart of the chiller system - the compressor, which uses Hitachi vortex, screw, and large centrifugal compressors developed with unique Hitachi technology. We continuously provide customers with various advanced products known for high reliability, energy saving, and environmental protection.
"Quality first, technological innovation" is our product concept, which requires us to be extremely responsible to customers, with zero tolerance for product defects, and requires us to focus on product optimization. We believe that by adhering to the business philosophy of "quality for survival, service for development" to build the company into a strong enterprise in the industrial refrigeration industry!
Huantai and Hitachi chillers (B2B strategic partner)
Since its establishment, the company has focused on the sales of complete machines (Sale), spare parts (Sparepart), after-sales service (Service), and information feedback (Survey) of Hitachi chillers, and provided 24-hour uninterrupted service response. It is an important strategic partner of Hitachi chillers that integrates product agency stocking, channel development, information exchange, and the only 4S standard service.
In the future, we will continue to uphold Hitachi′s "harmony, " "sincerity, " and "pioneering spirit, " and continue to work hard.
Warranty service commitment:
1. Free repair and replacement of parts during the warranty period;
2. Lifetime maintenance;
3. Paid services are provided outside the warranty period and spare parts are provided at preferential prices.
Warranty period:
The free warranty period for the whole machine is 1 year from the date of delivery.
Warranty certificate:
In the event of a fault during the warranty period, the user must provide the purchase contract (or purchase invoice) and the project completion acceptance data for warranty. If there is no purchase contract (or invoice) or project completion acceptance data, it will be calculated based on the product number. If there is no such data, paid maintenance service will be provided.
The following situations are not covered by the warranty:
1. Damage caused by poor power supply and improper use, storage, transportation and maintenance by the user;
2. Expiration of the warranty period;
3. Damage caused by installers/service providers not authorized by our company;
4. Damage caused by self-repair or disassembly of the product by the user;
5. Counterfeit brand products;
6. Damage caused by force majeure;
7. Uncommitted warranty service content.
Supply of repair parts
1. The contracted repair service provider has a certain amount of repair parts in stock, and provides users with full-time after-sales repair and maintenance services at the fastest speed.
2. The supply of repair parts outside the warranty period is provided to users at the fastest speed according to the parts supply process during the warranty period, and the price of repair parts is implemented according to the market price.
Maintenance after the warranty period
After the warranty period, paid maintenance services can be provided to users and a "Unit and Engineering Maintenance Contract" can be signed. This fee is negotiated with the user in accordance with the prescribed standards. The repair technical service personnel of the contracted repair service provider will conduct regular routine inspections and maintenance on the user's unit according to the contract requirements, and provide original spare parts and preferential repairs. At the same time, the user's unit will be listed and designated for maintenance, computer system testing and computer file management.
Service content and methods during the warranty period
a. Regular on-site inspection.
b. Regular technical training.
e. Free service commitment during the warranty period. Very low-cost inspection and maintenance agreement.
A Maintenance content during the warranty period
1.Whether the high and low pressure gauges of the fluorine system are normal and whether the high and low pressure protection is effective.
2.Check the fluorine system of the unit to see if there is any leakage.
3.Whether the chilled water sensor is normal.
4.Whether the anti-freeze sensor can work normally.
5.Whether the oil heater can work normally.
6.Compressor inspection: the quality and quantity of lubricating oil, the working current of the compressor, and whether various protection devices can work normally.
7.Whether the power supply voltage is within the normal range and whether the phase deviation is within the normal range.
8.Whether the unit overcurrent protection and phase sequence protection are effective.
9.Check other circuits, contactors, and relays to see if there are any problems such as incorrect connection.
10.Routine inspection of the evaporator to see if the configuration of the chilled water system is reasonable.
11.Routine inspection of the condenser and whether the configuration of the cooling water system is reasonable.
B Annual maintenance content of the third year
I. Refrigeration system
1. Recover or discharge the refrigerant into the condenser
2. Pressurize with the nitrogen system and check for leaks; and carefully check the tightness of each valve in the refrigerant circuit.
3. Check all safety valves for corrosion, rust, dust accumulation, scaling, and leakage.
II. Evaporator
1. Chemically clean the evaporator water circuit, check the corrosion and scaling of the evaporator, and put forward corresponding treatment opinions if necessary.
2. Check whether the temperature sensor related to the evaporator is normal and whether the pressure gauge thermometer is normal.
III. Condenser
1. Open the condenser end cover and clean the condenser cooling water heat exchange tube with chemicals
2. Check the corrosion and scaling of the heat exchanger, and put forward corresponding treatment opinions if necessary.
3. Check whether the temperature sensor related to the condenser is normal and whether the pressure gauge thermometer is normal.
IV. Electrical and control inspection
Check whether the motor insulation is good.
Check all circuits for looseness or overheating, and take appropriate measures if necessary.
Check and adjust all pressure/temperature sensors.
High and low pressure controllers
Motor winding temperature protection switch
Fusible plugs
Antifreeze protection temperature controller
Check and calibrate water flow switches.
V. Dehumidify and vacuum the refrigeration system, add refrigerant, debug the unit, and issue a debugging report.
C Regular inspection work content
1. Interpret and analyze the operation records, point out abnormal data, and make corresponding improvement suggestions
2. Check whether there are signs of leakage of refrigerant and refrigeration oil. If so, deal with it in an emergency.
3. Check whether the refrigeration system has obvious abnormal temperature and pressure.
4. Check whether the control is normal and whether the thermal expansion valve is working well.
5. Whether the unit operating voltage and current are normal.
6. Whether the control system functions normally, adjust if necessary.
7. Whether the power supply line and control wiring are tight and clean.
8. When the unit is running, whether the temperature and pressure of the cooling chilled water system are normal.
9. Whether the unit has abnormal noise and vibration.
10. Submit inspection report or suggestions for acceptance by the owner.
D. Maintenance instructions:
Due to the large number of unforeseen items in the material part of the maintenance work of Hitachi water-cooled screw chillers, the quotation for the materials that must be used is as above. During the maintenance process, if parts (not included in the quotation materials) need to be replaced, the parts and materials fee will be added separately after confirmation by the on-site person in charge of Party A.
1.Q:How to installation the air cooled chiller
A:The air-cooled chiller's condenser is finned, and the fan is installed on the top of chiller, it's used to dissipate heat to achieve heat exchange.
Compare with water cooled chiller, air cooled chiller's installation is much simpler, as long as the air-cooled chiller and user equipment connect through pipes.
The specific installation procedure is as follows:
1. Before installation, should choose a flat open space. It is best to re-build the cement foundation to ensure the levelness of the ground. After the installation, there must be a free space for future maintenance, and ensure that the ground can withstand Maintain the operating weight of the chiller.
2.Different chiller model with different inlet and outlet diameters. When installing, should choose water pipes with matching diameters and connect them correctly.
3.No matter under any load conditions, should ensure that the chiller's water flow is normal and stable.
4.The design and installation of water pipes should be carried out in accordance with relevant standards, and the water pump should be located higher than water inlet pipe, to ensure the positive pressure and flow of the unit.
5. Water pipe should have a firm support independent of the chiller, avoiding the force exerted on components of an air-cooled chiller. To reduce noise and vibration, it is best to install vibration isolators on the piping.
6. In order to the air-cooled chiller can running safely and stably, to ensure the normal use of each component, the poor water quality can be treated to avoid various sundries or corrosion deposits and the existence of pipes, evaporators, and condensers that affect the heat exchange effect , increasing maintenance costs in the later period.2.Q:What's The Difference Between R22 And R410a Refrigerant
A:The normal water chiller manufacturer make the chiller usually use R22 refrigerant in China, but R22 is not friendly with environment, will bring Ozone layer destruction, so the eco-friendly type refrigerant be request more and more by the customers from different country.
R410a is one of the choose.
With the increasing use of R410A refrigerant, can we directly replace R22 with R410a in the chiller system?
NO. because the physical and chemical parameters of the two kinds of refrigerant are different, which should be paid attention to in the system design.
The difference about R22 and R410a:
1. R410a request POE, with high hygroscopicity and easy hydrolysis, so compared with R22, The R410A system has more stringent requirements for moisture content.
2. Filling volume. after the structure of heat exchanger is reduced, the filling volume of R410a system is reduced about 20%~30%, compared with R22 system, it has greater heat transfer characteristics, with higher heat transfer efficiency, the heat exchanger can be miniaturized.
3. R410a is mixed refrigerant by HFC-32(R32) and HFC-125, the running pressure higher 50~70% than R22, so it's with the higher requirements for copper pipe than R22.
4. R410A with low toxicity, does not burn and spread, and does not damage the ozone layer,R22 is deadly to the ozone layer. R410a cooling efficient is higher 47% than R22.
5. R410A has a higher vapor density than R22, so the vapor flow rate of R410A is about 30% slower than R22. R410A is more soluble than R22. When the residue floats in R410A, it circulates smoothly through the system.
Announcements when choose R410a refrigerant:
1. R410A copper pipe must use high strength pressure special copper pipe, spare parts must also use special. You can use R410a copper pipe instead of ordinary R22 copper pipe, but can't use ordinary R22 copper pipe instead of R410a copper pipe.
2. When installing the R410A new refrigerant split, it must not be confused with the connecting pipe and refrigerant used in the R22 air conditioner.
3. During maintenance, if the refrigeration system is cut, the filter dryer must be replaced, and the refrigeration system should not be exposed to the air for more than five minutes.
4. The R410A refrigerant must be stored at an environment lower than 30°C. If it has been stored at an environment higher than 30°C, it must be stored at an environment lower than 30°C for at least 24 hours before use.
5. The four-way valves used in the R410A system have clear requirements on cleanliness, while the four-way valves used in the R22 system have no requirements on cleanliness.
6. The maximum design working pressure of the globe valve is different. The use of refrigerant R22 is 3.0MPa, and the use of refrigerant R410A is 4.3MPa. The R22 is 3.0MPa brass and the R410A is 4.3MPa stainless steel.
7. The pressure switch value is different. 3.0/2.4MPa is usually selected for R22 system, 4.2/3.6MPa is usually selected for R410A system.
8. At the rated voltage, the compressor of the R22 system has about 175W per displacement (1cc). The compressor of the hot R410A system has about 245W per displacement (1cc), which is about 65% to 70% of that of the R22 system
3.Q:What are the main functions of water-cooled screw chillers:
A:The main functions of a water-cooled screw chiller include refrigeration, heating, heat recovery, and cold recovery. These features make it an efficient and reliable refrigeration device, widely used in various industrial and commercial fields.
Double head water-cooled screw chiller unit
Firstly, the cooling function of the water-cooled screw chiller can reduce the temperature of the target object to the desired value. This function makes it a key equipment in many industrial production processes, such as food processing, chemical, pharmaceutical and other fields. In these fields, the production process needs to be maintained within a certain temperature range, and water-cooled screw chillers can accurately control the temperature to ensure the stability of the production process and product quality.
Secondly, the heating function of the water-cooled screw chiller can raise the temperature of the target object to the desired value. This feature makes it an important equipment in many commercial places, such as shopping malls, hospitals, hotels, etc. In these places, it is necessary to maintain indoor temperature within a comfortable range, and water-cooled screw chillers can provide stable heat sources by heating as needed.
In addition, the heat recovery function of water-cooled screw chillers can recover and reuse the thermal energy in the system. This feature makes it an ideal choice for many high energy consuming fields, such as data centers, hospitals, etc. In these fields, a large amount of energy is consumed for heating and cooling, and the heat recovery function of water-cooled screw chillers can recycle and reuse this energy, reducing energy costs.
Finally, the cold recovery function of the water-cooled screw chiller can recycle and reuse the cold energy in the system. This feature makes it an ideal choice for many fields that require a large amount of cooling, such as data centers, laboratories, etc. In these fields, a large amount of energy is consumed for cooling equipment, and the cold recovery function of water-cooled screw chillers can recycle and reuse this energy, reducing energy costs.
In summary, the main functions of water-cooled screw chillers include refrigeration, heating, heat recovery, and cold recovery. These features make it an efficient and reliable refrigeration device, widely used in various industrial and commercial fields.
4.Q:Working principle of screw chiller unit
A:When the unit is cooling, the compressor sucks the low-temperature and low-pressure refrigerant from the evaporator into the cylinder. After the compressor does work, the refrigerant vapor is compressed into high-temperature and high-pressure gas,
Enter the condenser through the exhaust pipe. The high-temperature and high-pressure refrigerant gas exchanges heat with the cooling water in the condenser, transferring heat to the cooling water and taking it away, while the refrigerant gas condenses into high-pressure liquid. The high-pressure liquid coming out of the condenser is throttled and depressurized by the thermal expansion valve before entering the evaporator. In the evaporator, the low-pressure liquid refrigerant absorbs the heat of the chilled water and vaporizes, causing the chilled water to cool down and become the required low-temperature water. The vaporized refrigerant gas is sucked back into the compressor for compression and discharged into the condenser, repeating this cycle to achieve cooling of the chilled water.
The chilled water coming out of the unit enters the end devices such as fan coil units and variable air volume air conditioning units indoors, where it exchanges heat with convective air. During this process, the water absorbs heat from the indoor air (dissipating heat to the indoor air), causing the temperature to rise. The indoor air, after passing through the indoor heat exchanger, decreases in temperature and is driven by the fan to enter the room, thereby reducing the indoor air temperature. The chilled water, which has risen in temperature, enters the unit again under the action of the water pump and circulates in this way to achieve continuous cooling.
){kind=link}