Chiller Solution

Central Air Conditioning Solutions

By chiller to cool water and wind

Overview of Chiller System

 

• • Chiller is a central equipment used to produce chilled water for industrial air conditioning and cooling systems. Instead of delivering refrigerant directly to each area like VRF/MRV systems, chillers use chilled water as a refrigerant carrier, then distribute water to heat exchangers such as AHU (Air Handling Unit) and FCU (Fan Coil Unit).
  • Chiller systems are commonly used in medium and large-scale projects such as:
    • Office Buildings
    • Shopping malls
    • Hotels
    • Hospitals
    • Factory
    • Airport
    • Schools and Public Buildings

Principle of operation

 

• • Chillers operate based on a compressed cold cycle, consisting of basic components:
  • Compressor → Condenser → Expansion Valve → Evaporator
  • In which:
    • Compressor: compresses the refrigerant to high pressure and temperature.
    • Condenser: discharges the heat of the medium into the environment.
    • Expansion Valve: reduces the pressure and temperature of the medium.
    • Evaporator: the refrigerant absorbs heat from the water and cools the water to the required temperature.

Comparison of water and wind cooling chiller systems

Air cooling chiller system details

• • Air-Cooled Chiller uses ambient air to cool the condenser. Air-Cooled Chiller without Cooling Tower and Condenser Water Pump
  • CAA Series Air-cooled scroll chiller hot/cold R32 gas inverter compressor
  • Use environmentally friendly R32 refrigerant
  • Full DC Inverter Spiral Compressor with EVI Technology
  • Wide operating range
  • Wide range of applications: cooling/heating/domestic hot water
  • User-friendly controller
  • Power 65/100/130 kW; up to 16 devices combined (up to 2080 kW)
  • 3-phase/380-415V/60Hz power supply
  • Black fin sea salt corrosion protection (optional)
  • CIA Series Air-cooled screw chiller – chỉ làm lạnh
  • High-efficiency compressor: This equipment adopts high-efficiency twin-screw compressor; High efficiency: the compressor adopts a 5:6 asymmetrical bearing design with large capacity and high efficiency; The high-precision production process avoids any leakage and increases the efficiency of the compressor; The internal refrigerant suction system is cooled by refrigerant, avoiding any capacity loss; The suction side adopts insulation, avoiding condensation and energy loss.
  • Heat exchanger:  A telescopic evaporator has refrigerant on the outside and chilled water inside the tubes. The advantage of this type of evaporator is that it reduces the amount of refrigerant required.
  • Falling Film Evaporator (optional): Patented refrigerant container design, uniform refrigerant distribution; Adopt cluster partition technology to ensure high heat transfer efficiency.
  • High-efficiency axial fan:  Professional flow field optimization design, the fan blade has good aerodynamic performance, low noise and efficient fan operation.
  • Stepless adjustment, adaptive cooling: Classic PID control technology is used to quickly respond to user load fluctuations and ensure water temperature stability for users.
  • EXV Design: The chiller uses an electronic damper (EXV) to precisely control the flow of refrigerant according to demand, which increases the coefficient of performance (COP) and keeps the product more stable.
  • Energy-saving sub-refrigeration design: The chiller uses a high-efficiency plate heat exchanger as an energy-saver, which cools by 18 degrees Celsius on the high-pressure side, increasing the COP coefficient by 3-5%.
  • SE Series Specification Details –Standard Performance
  • Detailed HE Series Specifications –High Performance
  • Centrifugal chiller with magnetic cushion air cooling
  • Overview of the magnetic buffer air cooling centrifugal chiller system
  • The Haier Air-Cooled Magnetic Bearing Centrifugal Chiller is a high-capacity water chiller from Haier, combining Magnetic Bearing centrifugal compressor technology with an Air-Cooled system. The product was developed for buildings that require high energy efficiency, stable operation, low noise and reduced maintenance costs throughout the equipment lifecycle. The highlight of this chiller is the magnetic bearing technology, which allows the compressor rotor to operate on magnetic forces instead of using traditional mechanical ball bearings. Thanks to the significant reduction in mechanical friction, the machine is capable of achieving high efficiency, especially under partial load conditions – a common operating state of HVAC systems in practice.
  • System Characteristic
    • Reduced mechanical friction
    • No need for a traditional lubricating oil system
    • Reduced energy losses during operation
    • Reduction of wear-resistant mechanical parts
    • Reduced maintenance needs
    • Increase compressor reliability and life
    • Low vibration and noise
    • Detailed Specifications Centrifugal Chiller Series Magnetic Cushion Cooling
  • Water cooling chiller system details
    • Water-Cooled Chiller là Chiller sử dụng nước giải nhiệt để lấy nhiệt từ môi chất lạnh tại condenser. Nước giải nhiệt sau đó được đưa đến Cooling Tower (tháp giải nhiệt) để thải nhiệt ra môi trường.
    • Main components of a water cooling chiller system
      • Chiller: It is a central device that performs the water cooling process.
      • Chilled Water Pump – CHWP: Chilled Water Pump from Chiller to AHU/FCU
      • Cooling Tower: The cooling tower is responsible for discharging the heat of the system into the environment through heat exchange and water evaporation.
      • Condenser Water Pump – CWP: Cooling water pump circulates between the chiller and the cooling tower
      • AHUs and FCUs: AHUs and FCUs use chilled water from a chiller to cool the air. AHUs are usually used for large areas that need to handle large volumes of air. FCUs are usually used for smaller rooms or areas.
  • Water-cooled screw chiller
  • The Haier Water-Cooled Screw Chiller is a central water chiller that uses a twin-screw compressor and a water-cooled condenser. It is the right solution for commercial buildings, hotels, hospitals, factories, and HVAC systems with medium to large refrigeration needs.
  • According to the Haier product portfolio, the Water-Cooled Screw Chiller series has a cooling power range of approximately 335–2,085 kW, using a semi-hermetic screw compressor.
  • System Characteristic
    • One-button start/stop – automatic operation
    • Countdown timer – easy to use, easy to observe, saves waiting time.
    • Timer function – automatic operation, increased efficiency.
    • Intelligent memory function: store the abnormal operation fault of the device. Easy to check and handle manually.
    • Self-control function: the device monitors the change of each parameter in real time.
    • Automatically adjusts the operating status to ensure continuous safe operation.
    • Automatically evaluate and intelligently operate limescale cleaning tips, efficient operation and maintenance.

 

• • Detailed Specifications
    • Product Code
  • AHRI Certification
  • Gas Use R134a
  • Power Supply 3ph/380V-415V/50Hz
  • Screw Compressor
  • Fixed frequency screw chiller type
    • Refrigeration capacity from 117 Ton to 577 Ton
    •         Starting Current: 450A – 1389A
    •         Control Level: 25%-100%
    •         COP from 5.76 to 6.31 Kw/Kw

 

• • Inverter Screw Chiller Type
    • Refrigeration capacity from 160 Ton to 620 Ton
    • Starting Current: 240A – 844A
    • COP from 5.92 to 6.35 Kw/Kw

 

• • Water-cooled centrifugal chiller
  • Water-Cooled Centrifugal Chiller is a water chiller system that uses a centrifugal compressor and water as a cooling medium at the condenser. This is one of the popular central chiller solutions for buildings with large cooling needs, long operating time and high energy efficiency requirements. In this system, the chiller generates chilled water to supply heat exchangers such as AHUs, FCUs or industrial refrigeration systems. The heat taken from the building is transferred to the refrigerant, which is then discharged through the cooling water ring and the Cooling Tower.
  • The centrifugal water cooling chiller system has the following characteristics
    • High-efficiency energy saver. Three-stage separator improves chiller performance.
    • Haier’s patented high-efficiency evaporator design improves chiller performance and operational efficiency.
    • Control cabinet separates strong and weak currents. 10 inch HD touch screen.
    • Semi-hermetic centrifugal compressor. The efficient impeller is designed based on aeronautical research technology.
    • The high-performance condenser’s externally threaded copper heat exchanger tube increases the efficiency of super-fast cooling.
    • Hole shield (flow regulating device): After installation, no lifetime maintenance is required.
    • Disassembled electrical cabinet installed at the project.
    • Detailed Product Specifications
  • Product Model Designation

 

• • Power Supply: 3Ph/380V/50Hz or 3Ph/10Kv/50Hz
  • Gas Use R134a
  • AHRI Certification
  • High Voltage Fixed Frequency Chiller Series
    • Refrigeration capacity from 800 Ton to 1600 Ton
    • COP 6.55 to 6.66 Kw/Kw
    • Starting current from 194A to 340A
    • Power control level from 30% to 100%
    • Inverter High Voltage Chiller Series
  • Refrigeration capacity from 800 Ton to 1600 Ton
  • COP 6.4 Kw/Kw
  • Starting current from 2A
  • Power control level from 20% to 100%
    • Low Voltage Fixed Frequency Chiller Series

 

• • Refrigeration capacity from 600 Ton to 1300 Ton
  • COP 6.66 Kw/Kw – 6.8 Kw/Kw
  • Starting current from 1284A to 2567A
  • Power control level from 30% to 100%
  • Inverter low voltage chiller series
  • Refrigeration capacity from 600 Ton to 1300 Ton
  • COP 6.57 Kw/Kw to 6.72 Kw/Kw
  • Starting current from 32A – 58A
  • Power control level from 20% to 100%

 

Water-cooled magnetic bearing centrifugal chiller

• • Starting the production of the first magnetic field chiller in 2003, after more than 20 years, Haier has obtained more than 100 patents, 3 world-leading scientific and technological achievements, recognized by 14 certification bodies, 19 leading certifications in the industry. Haier has made the history of magnetic central air conditioning systems in China and continues to lead the oil-free chiller era. Oil-free magnetic chillers have the following characteristics
  • Stable and Reliable Operation: Low Attenuation- The service life of the magnetic suspension is up to 30 years, and the attenuation in 10 years is only 1/10 that of conventional chillers and 1/30 of that of absorption chillers; Precise Temperature Control -2%-100% stepless adjustable magnetic suspension system, accurate temperature control, and can still meet the requirement of ±0.1°C accuracy in the transition season

• • More energy-saving under different working conditions: Haier Magnetic IPLV can reach 13.18, and the maximum energy efficiency ratio of partial load can reach 23.58 which makes the device more energy-efficient; Higher energy efficiency at different inlet coolant temperatures and different outlet chilled water temperatures under full load

• • Oil-free operation technology: The equipment is completely oil-free, does not require oil system, oil pump and other parts, has higher reliability; There is no lubricating oil in the refrigerant, the energy efficiency of the equipment is improved by more than 8% (see the picture on the right); This equipment does not require the same oil pressure difference as conventional compressors, especially in spring, autumn and winter when the ambient temperature is very low, the magnetic buffer device is more stable in operation, while the conventional equipment needs to keep the condenser inlet water temperature above 20°C; Do not heat before starting the magnetic lifting process. In general, the compressor needs to be preheated for 24 hours before starting; Eliminate mechanical friction, be more durable than ordinary bearings, and double the operating life of the equipment; Small size and light weight
  • Simple structure and low maintenance cost: Simple structure, direct drive (no secondary drive such as acceleration gear); No oil circuit system, no need to change oil, save maintenance costs; No mechanical wear; eliminate oil circuit and transmission failures of conventional equipment.

• • Multi-head redundancy design: The equipment adopts a modular design, each compressor has an independent refrigeration circuit and independent power supply. Compared with the ordinary single centrifugal compressor design: If one module is broken, the other modules can still work and provide no less than 75% of the cooling capacity; When one compressor is broken, the other compressor can start running quickly, and the start-up time is less than 30 seconds; The multi-head synchronous frequency regulator can work at higher energy efficiency.

• • Anti-Intelligent “Load Reduction Vibration”: Normally when running a semi-load, vibration and loud noise will be harmful to the compressor. The magnetic field variable frequency centrifuge provides a control curve for safe compressor operation in the compressor control module. By real-time monitoring of the parameters of the two devices (cold water/cooling water supply and return water temperature, flow), the speed and opening of the guide vane are adjusted in time after calculation and judgment to ensure that the compressor always works in a safe area and avoid surge problems. At the same time, for the high-capacity magnetic hanging centrifuge, adopt the multi-compressor refrigeration system design to solve the shaking problem of the low-load centrifuge, and at the same time expand the minimum operating load of the equipment and maintain high performance.
  • Wider Operating Range: The outlet temperature of the normal magnetic field chilled water is 3~20°C, while the lowest outlet temperature of the low-temperature magnetic field can reach -6°C, with a wider output range. The highest inlet coolant temperature is 43°C, the lowest can go down to 10°C, the lowest temperature can be as low as 8°C, which can adapt to year-round cooling conditions.
  • Smaller starting current: The starting current of a single compressor of a magnetic field chiller is only 2A, compared to the 1200-1400amp of a traditional machine.
  • Low operating noise and small vibration: Noise level as low as 70dB, structural vibration close to 0
  • Equipped with intelligent cloud platform services: remote monitoring, intelligent maintenance reminders, automatic fault warnings, automatic analysis of big data to optimize energy use, real-time online interaction.

    Detailed Specifications of Magnetic Water Cooling Centrifugal Chiller

• • Product Model Designation

• • Types of gas used: R134a (P symbol), R513A (U symbol), 515B (V symbol), R1234ze(E) (R symbol)
  • Power supply: 3Ph/380V/50Hz (N-symbol), 3Ph/380V/60Hz (K-symbol), 3Ph/400V/50Hz (B-symbol), 3Ph/400V/60Hz (L-symbol)
  • AHRI Certification
  • For the R134a gas series, Haier will provide products that meet the refrigeration capacity from 125 Ton to 2500 Ton, COP from 6.01 to 6.5 Kw/Kw.
  • For the 513A gas series, Haier will provide products that meet the refrigeration capacity from 125 Ton to 800 Ton, COP from 6.01 to 6.68 Kw/Kw.
  • Refrigeration Capacity/COP For the R1234ze (E) gas series, Haier will provide products that meet the refrigeration capacity from 95 Ton to 520 Ton, COP from 5.75 to 6.22 Kw/Kw.
  • For the R515B gas series, Haier will provide products that meet the refrigeration capacity from 95 Ton to 520 Ton, COP from 5.75 to 6.22 Kw/Kw.
  • Buffer compressors from the Danfoss brand
  • 2A Compressor Starter Series