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variable refrigerant flow (vrf)

A multi-split solution, VRF systems can connect up to 64 indoor units to a single modular outdoor unit system. The system calculates the refrigerant required by each indoor unit and adjusts the amount provided to the fan coil units based on the space’s operating conditions. In other words, it controls and varies the refrigerant flow to ensure the desired comfort level of each space without over cooling or over-heating.
How? VRF system outdoor units have all inverter-driven compressors. This means their speed can be varied simply by changing the frequency of power supply to that compressor. As the speed changes, so does the amount of refrigerant delivered, allowing the compressor to operate continuously rather than repeatedly cycle on and off.
There are two types of VRF systems: heat recovery and heat pump. The biggest difference is that heat recovery units can heat and cool at the same time, while heat pump units can only heat or cool at once. So, heat recovery systems, which improve efficiency by taking heat from one space and redistributing it to another, are ideal for anywhere you need zone-by-zone control—like a hotel or assisted living facility. And heat pump systems are great for spaces where only one mode of operation is needed, like a bank.

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FLEXIBILITY

■ From the system options to the ability to connect several indoor units to a single outdoor unit, VRF systems provide flexibility to accommodate almost any building requirement.

■ Zoned comfort control from a central location and independent from each zones

■ No need for maintenance rooms or service shafts, freeing up valuable space

■ Elimination of distribution fans, water pumps and large hydronic pipes

■ Smaller equipment footprint paired with long piping lengths means more application options

PERFORMANCE

■ System performance is significantly enhanced because of the heat transfer properties of refrigerant over other mediums.

■ Inverter-driven technology allows users to precisely dial into the compressor operation to deliver optimal capacity

EFFICIENCY

■ VRF systems use no-to-minimal ductwork, depending on the application. Not only does this make installation and maintenance easier, but it also eliminates any energy waste associated with central duct systems.

■ Energy savings from moving conditioned refrigerant only to the needed units

■ High Integrated Energy Efficiency Ratio (IEER) achievement

Advantages

Environment Friendly

Refrigerant R410A(HFC), low carbon footprint, no harm to Ozone.

Cross Flow Fins
-Has low air resistance and great heat transfer coefficient.
-Frosting improved, frost on the heat-exchanger will be well-distributed, easy for defrosting.

Full DC inverter technology

At the heart of our system is a highly intelligent inverter driven compressor. This advanced technology enables the output of the outdoor unit to be modulated by the cooling or heating demands of the zone that it controls. This advanced system ensures precise temperature regulation and highly efficient energy usage, making a significant contribution to the limiting the impact on the environment.

DC Fan Motor
According to the running load and pressure, the outdoor unit controls the speed of DC fan to achieve the minimum power consumption. High efficiency DC fan motor saved power up to 50%.

High performance heat exchanger

The new designed window fins enlarge the heat-exchanging area, decrease the air resistance, save more power and enhance heat exchange performance. Hydrophilic fins and inner-threaded copper pipes optimize heat exchange efficiency.

 

VRF Cotologue

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