Magnetic Levitation Energy-Savinng HVAC

interconnected-pipes-symbolizing-infrastructure-connectivity-plumbing-systems-concept-infr

Magnetic Levitation Energy-Saving HVAC Projects

EZ's new generation of magnetic levitation frequency conversion centrifugal chiller units, integrating the essence of Italian advanced design, adopting magnetic levitation frequency conversion compressor, R134a environmental protection refrigerant and high-efficiency falling film evaporation technology, equipped with microcomputer control technology, can provide green energy-saving solutions for the customer's building environment. All series of EZMW units are far beyond the first grade of national energy efficiency, and all series of EZMW units will pass the test station approved by AHRI and CNAS before leaving the factory, which have the features of high efficiency, reliable system and low noise, etc. They are the first choice for medium and large public buildings and civil buildings such as hotels, commercial buildings, railways, new construction projects or renovation projects, and they can create a green, intelligent and high-efficiency server room for customers.

-Creating Value for Users-
为用户创造价值

Reduced operating costs

· Low equipment maintenance costs

· No necessity of employing professional operation and maintenance personnel

· Dramatic reduction in energy consumption in the central air-conditioning

Reducing Owner Risks

· Quantifiable eficient equipment room energy efficiency commitment

· Project plan and management risks

· Project delay and energy efficiency risks

Optimisation of financial statements

· Reduction in the one-time fixed expenses of enterprises

· Diversification of investment to optimize corporate cash fow

-Applications-
运用

Star Hotels

Metro

Industrial building

Medical and health

Scientific research in education

Gymnasium

Commercial

Government Public Buildings

Applications

-Core Technology-
核心技术

Energy-saving

Adopting permanent magnet synchronous motor, compressor integrated frequency control system, bearing motor control system, with EK new generation frequency converter, and through the frequency converter motor and the inlet guide vane to adjust the load variation of the unit, so that the unit operates at the best state point. Frequency conversion technology combined with micro-channel refrigerant heat dissipation technology, so that the unit saves energy consumption up to 50%, motor speed + inlet guide vane co-adjustment, can achieve the refrigeration load as low as 10% or less.

High-efficiency heat transfer technology

The evaporator adopts full falling film evaporation design with spraying technology and high-efficiency strengthened heat exchanger copper tube to achieve complete film evaporation of refrigerant on the surface of high-efficiency heat exchanger tube, which greatly improves the overall heat exchanger efficiency of the unit, and the unit basically realises zero liquid level in the evaporator, which greatly reduces the refrigerant charging quantity.

Safety

With EZ's new generation of controllers, the compressor's electrical control has been further improved so that it requires only a small amount of current to start, has no impact on the grid, reduces standby generator costs, and is easily expandable. Refrigerant cooling technology for motors and inverters, even and efficient heat transfer, thorough cooling, ensuring the reliability and stability of motors and inverters. The magnetic levitation bearing control system is equipped with position sensors, which can monitor and adjust the position of the magnetic levitation rotor in real time to ensure the safety and stability of the compressor during operation.

Power-off protection technology

Each compressor is equipped with a set of capacitors to store electrical energy and filter DC voltage fluctuations, in the event of a sudden power failure, the capacitors can continue to supply power to the bearings, so that the motor is switched to the power generation mode, power supply itself until it stops, to maintain its operating status and gradually reduce the load, so that the unit can be smoothly shut down.

Dual-stage Enhanced Enthalpy Technology

The unit adopts two-stage closed impeller compression + three-stage highefficiency economiser technology, combined with the best intermediate makeup air technology, which can reduce the compressor speed, improve the compressor aerodynamic efficiency, greatly improve the energy efficiency of the system, and increase the energy efficiency by 6% compared with the single-stage compressor unit, increase the heat-absorbing capacity of the refrigerant, reduce the power consumption of the compressor, and make the unit more energy-efficient.

Environmentally friendly refrigerant

Adopting R134a refrigerant, it has outstanding performance and saves electricity consumption; it does not contain chlorine and has no destructive effect on the atmospheric ozone layer, and has no expiry date for banning.
Effectively reduce CO₂emission, slow down the increasingly serious urban heat island effect, and build a green life building. Combined with the falling film evaporative heat transfer technology, it saves refrigerant and ensures the efficient operation of the unit.

High strength and quality bearings

Adopting high strength material bearings, zero friction design, long bearing life.
With the wear and tear of the bearings of ordinary centrifugal compressors, the operating noise of the unit will increase continuously, while the magnetic levitation unit components are completely suspended, the noise and vibration generated by the unit is extremely small, and the noise of the compressor is as low as 70dB(A), which brings a better experience to the users, and at the same time, it is not necessary to do the relevant vibration reduction and noise reduction and soundproofing measures, which reduces the cost of installation and noise reduction

The control interface includes

10’ true colour graphic display interface
Main interface of the unit
User menu interface
Status query screen
Parameter setting interface
System Failure Screen

-Unit Selection / Instructions-
单位选择 / 说明

Waterside pressure-bearing

Evaporator: The standard machine is designed for 1.0MPa water side pressure, and 1.6 MPa and 2.0MPa specifications are available.

Condenser: The standard design water side pressure is 1.0MPa, 1.6MPa and 2.0MPa are available.

Shock absorber

The unit can be equipped with optional high elasticity rubber damping pads or spring damping devices to further reduce the vibration transmission of the unit to the load-bearing surface.

Evaporator insulation wool

The unit comes standard with 19mm insula tion wool, wi th an op tional 38mm insulation thickness, to cope with projects where the humidity of the cold storage and storage and operating environment is greater than 90%.

Refrigerant isolation valve

The optional refrigerant isolation valve allows the refrigerant to be stored in the condenser so that the unit can be serviced without transferring the refrigerant.

Ultra-high-rise office building

Efficient central air conditioning creates a comfortable office environment In office buildings, the load of central air conditioning is large and relatively stable during weekdays, which requires efficient and reliable air conditioning solutions to ensure its effectiveness and low operating costs. At the same time, when the load is lower in the evening and on weekends, the central air conditioning needs to be operated to ensure comfort, which requires central air conditioning units and systems with a wide range of adjustment, which can be automatically and intelligently adjusted according to the load demand, avoiding energy wastage and realising energy saving in the building.

Hotel

Adapt to Seasonal Occupancy Rates with Floating Load Capability Given the seasonal nature of the hotel industry, EZ central air conditioners offer an excellent solution. With its amazing low load capability, a single central air conditioner can easily cope with the electrical load requirements of changing occupancy rates. The central air conditioner operates at such a low noise level that no central air conditioning can be heard outside the room, and EZ's easy maintenance procedures and proven stability allow maintenance staff to concentrate on other tasks.

Hospital

Ensuring Reliability and Non-Interference with Internal Redundancy In a hospital environment, a reliable air conditioning system is important not only for patient comfort, but also for the environmental safety of the equipment and laboratories. With very low starting currents, starting the central air conditioning system from a standby generator ensures that the central air-conditioning system will continue to operate in the event of a power failure. The use of multiple compressors also ensures a continuous supply of cooling water and provides internal redundancy at a very low cost.

Commercial premises

Reduced Power Consumption and Maintenance Costs EZ central air conditioners are highly reliable and reduce maintenance costs by around 50 per cent compared to conventional technologies. This reliability provides year round comfort, and EK's oil free variable-speed central air conditioners have the unique ability to adjust the temperature according to the load, which makes it easy for users to control the room temperature according to their needs. The resulting low energy consumption and maintenance costs also reduce operating costs in commercial premises.

Process refrigeration

By using oil-free and frictionless technology, EZ central air conditioners ensure that the compressor does not wear out over long periods of time. So when the central air conditioner is in constant use, maintenance costs are low. Compared to conventional technology, EZ central air conditioners can be restarted at a very low power level even after a power failure, thus reducing interruption times. At the same time, the multiple compressor design provides internal redundancy for the central air conditioner and ensures the supply of cooling water at a constant and precise temperature.

Data centers

Uninterrupted year-round operation; For a data center that operates year-round, a tightly controlled continuous supply of chilled water is critical, and EZ's central air conditioners offer a superior solution through their high reliability and short downtime for maintenance. The most significant operating cost of a data center is power consumption, so the substantial energy savings offered by these central air conditioners can reduce overall operating costs. Internal redundancy with multiple compressors can help free up more space in the data center. Central air conditioning can be tailored to meet future needs, as it can operate efficiently and continuously at partial loads if required.

Magnetic Levitation Energy-Saving HVAC Projects

-Creating Value for Users- 为用户创造价值

-Applications- 运用

-Core Technology- 核心技术

10’ true colour graphic display interface Main interface of the unit User menu interface Status query screen Parameter setting interface System Failure Screen

-Unit Selection / Instructions- 单位选择 / 说明

Evaporator: The standard machine is designed for 1.0MPa water side pressure, and 1.6 MPa and 2.0MPa specifications are available. Condenser: The standard design water side pressure is 1.0MPa, 1.6MPa and 2.0MPa are available.