Hitachi Air VRF provide flexible & energy-efficient HVAC for building

For investors and contractors of building projects, optimizing energy efficiency and ensuring comfort in commercial spaces are constant challenges. Finding solutions to address these urgent issues, and with the increasing emphasis on green building trends, the shift towards smart Hitachi VRF air conditioning systems for large-scale projects such as office buildings, luxury hotels, schools, and hospitals is becoming increasingly strong. In the Vietnamese market, U.P Tech has introduced Hitachi VRF systems, providing flexible and energy-efficient air conditioning solutions for buildings, most notably the air365 Max (TopFlow VRF) generation.

Overview of the Hitachi Air VRF air365 Max System

The Hitachi Air VRF air365 Max system inherits decades of technology from the renowned SET FREE generation. The system offers specialized product lines, flexibly meeting the demanding needs of various projects, and includes three types: Cooling Only Type, Heat Pump Type, and Heat Recovery Type.

• Cooling Only Type: This type of system optimizes cooling efficiency, making it extremely suitable for areas with year-round hot tropical climates.
• Heat Pump Type: This two-way cooling/heating system operates efficiently, automatically adjusting according to the season to deliver ideal temperatures.
• Heat Recovery Type: This advanced heat recovery technology allows for simultaneous heating and cooling in different areas at the same time, intelligently redistributing excess energy.

Hitachi Air VRF emphasizes creating harmony between the air and the user's interior environment. All technological advancements are focused on achieving an ideal balance of productivity, learning, happiness, and well-being.

Breakthrough Technology Helps Hitachi VRF Air Conditioners Achieve Superior Energy Savings

SmoothDrive 2.0 Technology for Superior Compressor Control

SmoothDrive 2.0 technology, with its superior compressor control, is key to energy savings in partial load mode. In a conventional VRF system, this power control can be complex, involving both the control of refrigerant evaporation temperature and compressor operation. However, Hitachi Air VRF have developed a superior SmoothDrive method. This operating mechanism utilizes direct power control technology, allowing the compressor to operate continuously and stably even at partial load. This results in a 39% energy saving when operating in partial load mode.

Practical Effectiveness: By minimizing the compressor's on/off cycles, this technology reduces energy waste and maintains absolutely stable room temperature. The actual performance is significantly improved, proven to reduce energy consumption by up to 39% at a 33% partial load. The system's maximum Energy Efficiency Ratio (EER) reaches 5.40.

Most of the time, HVAC systems operate at partial load due to ambient conditions, set temperatures, number of users, and the system being designed to exceed its required capacity. As organizations seek to improve energy efficiency and reduce carbon emissions by regulating set temperatures within a reasonable range, partial load operation becomes even more important. The Hitachi Air VRF air365 Max utilizes direct power control, combining precise temperature sensing with precise compressor control to balance load and power with less fluctuation. Its effectiveness in energy consumption has been formally verified at a third-party testing facility.

Under cooling mode test conditions, load factor: Approximately 33%, average power consumption without SmoothDrive is 2.46kW, and with SmoothDrive is 1.49kW.

VRF Outdoor Unit: (RAS-AP280DG3 = RAS-10FSNS).
VRF Indoor Unit: Hitachi 4-way Cassette Indoor Unit (RCI-AP140K5 = RCI-5.0FSRP).
Ambient temperature in high airflow mode: 23°C (dry temperature).
Paint length between indoor and outdoor units: 15 meters.

Hitachi Air VRF in buildings experiencing all sorts of changes throughout the day can still operate at over 70% of the time in partial load mode, with most systems at 50% or lower capacity. Actual energy efficiency is improved. Temperature stability is enhanced through continuous monitoring and adjustment of capacity based on compressor speed, allowing for more precise maintenance of indoor temperatures. Smoother compressor operation is achieved with a more accurate and stable compressor rotation frequency. On/off cycles are minimized, and peaks and troughs are reduced, minimizing compressor wear.

Intelligent Sensor System

Integrated motion sensors automatically detect the density of people in the room. The system will automatically adjust power consumption or temporarily shut off after 30 minutes when the room is empty, completely eliminating wasted electricity in spaces with inconsistent usage.

Compatible indoor units (IDUs) can automatically detect presence and automate their operation accordingly. The presence sensor allows for control based on the number of people present in the conditioned space. If a Hitachi VRF system indoor unit is installed in a room with intermittent human presence, the sensor allows for automatic control to reduce consumption and save energy.

Peak Power Management Feature

Allows operators to easily limit power consumption during peak hours (setting limits from 40% - 90%). Demand Control helps businesses proactively optimize operating costs without impacting the overall user experience. The Demand Response Enabling Device (DRED) allows your power provider to control the system at multiple pre-programmed levels to manage your power demand on the grid during peak hours. The goal is to reduce total power consumption for the supply network during critical peak load times. This feature can be enabled and disabled on individual or centralized Hitachi air conditioner controllers. No additional equipment is required.

Managing power consumption during peak hours:
- Peak-hour load reduction control
- Moderate consumption control

Maximum flexibility in system design and installation optimizes investment costs.

Diverse outdoor unit capacity range and record-breaking pipe length. The Hitachi air365 Max VRF air conditioning system boasts a flexible modular structure with single unit capacities up to 30HP and combined units up to 120HP. The outdoor unit cabinet size is reduced by up to 36%, significantly saving installation space on rooftops or balconies. The system allows for a total refrigerant pipe length of up to 1,000m, with a maximum actual distance between the outdoor and indoor units of up to 200m. The height difference between the outdoor and indoor units is up to 110m, perfectly accommodating the architectural structure of skyscrapers. High external static pressure (ESP) of up to 80Pa allows for installation of the outdoor unit directly in the building's ventilation technical rooms.

With a wide range of indoor unit options, including over 18 styles and 100 different models, the system caters to every architectural style. Ducted concealed ceiling units (High/Medium/Low ESP), 4-way cassette ceiling units (with optional award-winning Silent-Iconic premium grille), and wall-mounted units are available.

Hitachi VRF Air Conditioning Solutions for Specific Building Categories

Office Spaces

- Energy Saving: SmoothDriv 2.0 maintains a stable temperature throughout the 8-hour workday.

- Comfort: GentleCool cooling technology allows for customizable airflow temperature in addition to room temperature, preventing direct cold air drafts that can cause discomfort to employees and improve work efficiency.

- Quiet Operation: Night-shift mode reduces outdoor unit noise by an average of 3dB(A), ensuring a quiet environment for the surrounding area.

Hotels and Resorts

- Optimized Heat Recovery: Transfers excess heat energy from cooling rooms to power the central hot water system or heat other rooms, reducing overall energy costs.

- Smart Control: The Hotel Setback feature connects directly to the room card system. When guests leave, the air conditioner automatically switches to energy-saving mode while maintaining a comfortable room temperature.

Schools

- Fresh Ventilation Solutions: The system flexibly combines with a clean air processing unit (Dx-kit and Fresh Air Processing Unit) to continuously supply filtered, oxygen-rich fresh air from outside into the classroom, helping students stay alert and maintain high concentration.

- Operational Safety: Individual controller lock mode prevents students from accidentally pressing the wrong settings.

Hospitals and Healthcare Facilities

- Antibacterial and Germicidal Technology: Integrated ViroSense Z2 advanced filter (optional) containing Zinc ions capable of inhibiting SARS-CoV-2 virus up to 99.9%, eliminating over 99% of bacteria and PM2.5 fine dust.

- For concealed ceiling models, the integrated AQtiv-Ion Kit actively releases negative ions to neutralize odors and minimize harmful substances such as Formaldehyde, providing absolute protection for the health of patients and healthcare workers.

Hitachi Air VRF Conditioning System: Intelligent Monitoring, Control, and Operation

Central Control System

Advanced controllers such as the 8.5-inch touchscreen Central Station EZ allow for intuitive management of up to hundreds of indoor units. Combined with the airCloud Pro application, building managers can easily monitor, schedule weekly on/off times, and track energy consumption anytime, anywhere via phone or computer.

Super-fast Maintenance with airCloud Tap - NFC Technology

Thanks to built-in NFC short-range wireless connectivity technology, technicians only need to lightly touch their phone to the symbol on the outdoor unit or controller to read/write all operating data and configuration settings. This solution reduces maintenance data check time by up to 80% and speeds up system setup by four times compared to manual methods.

Featuring a range of groundbreaking technologies, the Hitachi air365 Max VRF air conditioner is more than just a simple cooling device; it's a comprehensive, sustainable, and intelligent climate solution for the future. With superior energy efficiency, a flexible design that adapts to any building architecture, and an air filtration system that provides maximum health protection, it represents a strategic investment delivering long-term economic value for offices, hotels, schools, and hospitals. It's considered the perfect combination of cutting-edge energy-balancing technology and superior comfort, embodying the philosophy of "The beauty of balance."

U.P Tech - the exclusive authorized distributor of Hitachi VRF air conditioners in Vietnam, boasts 25 years of experience in providing air conditioning solutions for all types of projects. Aiming to deliver high-quality cooling at the most economical cost, U.P Tech promises that every product delivered to our customers is guaranteed to be 100% genuine, accompanied by expert design consultation, installation according to Hitachi's technical standards, and reliable long-term warranty and maintenance services.

U.P. TECHNOLOGY AND TRADING CO., LTD.

Hotline: 1800 6202

Email: vu@uptech.com.vn

Website:  https://uptech.com.vn

Transaction Office: 370 Cach Mang Thang 8 Street, Nhieu Loc Ward, Ho Chi Minh City

Head Office: A13, Thuan Viet Commercial Area, 319 Ly Thuong Kiet Street, Phu Tho Ward, Ho Chi Minh City.