–Hitachi VRF: the technology defining the future of air conditioning
One of the most notable advances in the HVAC industry is Variable Refrigerant Flow (VRF) technology. This innovation makes it possible to deliver cool air to rooms only when they are occupied, which can lead to energy savings of up to 50%. This technology, which dynamically adapts to the air conditioning needs of a building, has become a key pillar in the quest for energy efficiency.
Hitachi VRF Air Conditioning Solutions: Innovation and Energy Efficiency
Hitachi's VRF air conditioning solutions represent the pinnacle of innovation and energy efficiency in the air conditioning industry. With a wide variety of indoor units and a focus on customisation and sustainability, its commitment to indoor air quality and energy efficiency ensures a comfortable and environmentally friendly environment for its users. Hitachi offers a complete range of VRF products to meet a wide variety of air conditioning needs.
VRF design innovation
Innovation in the design of VRF systems has been instrumental in improving their efficiency and sustainability. In particular, the focus on optimising the compressor, which consumes most of the energy. These advances include more precise regulation of refrigerant flow and smooth compressor operation, even in part-load conditions, thus reducing waste.
In addition, other features have helped to improve the efficiency and sustainability of the systems such as:
- Automatic cleaning of filters and coils
- Cloud-based management through mobile applications
- More environmentally friendly refrigerants
- The modular lateral flow VRF that saves space, costs, and energy.
- Quick Configuration and Centralised Control
How to choose a VRF system according to different criteria
For HVAC professionals, architects and commercial decision makers looking for an unrivalled range of VRF equipment, Hitachi offers unique solutions designed to suit any building or interior décor function:
VRF Indoor Units:
Our wide range of VRF indoor units offers flexible solutions for a variety of spaces and budgets. With options including cassettes, floor standing units, wall mounted, ducted systems, etc. you can tailor the power of the units to your specific needs. Our 4-way cassettes have been refined over time to reduce the required ceiling height and improve airflow performance. In addition, we offer advanced features such as the TwinSense panel for automated comfort and temperature sensors that improve energy efficiency. Our VRF indoor units ensure precise temperature control and superior energy efficiency, maximising occupant comfort and reducing costly energy expenses.
VRF Mini:
Our Mini VRF solution is the ideal choice for narrow spaces and balconies. Offering optimal comfort and efficiency, this system is highly versatile and adaptable. It allows the installation of up to 39 indoor units, each with independent temperature control, and offers the possibility of using heat recovery systems to achieve simultaneous cooling and heating in different areas. This is especially beneficial in buildings with varying solar exposure or uneven occupancy in different zones. In addition, the compact models require minimal space, making them an excellent choice for narrow balconies and small roofs...
Top Flow VRF:
Hitachi's Superior Flow VRF systems are ideal for projects that demand high standards of energy efficiency and simple, efficient installation. These systems offer a wide range of capacities, from 5 hp to 96 hp, and allow both simultaneous cooling and heating in different zones through waste heat transfer. This is particularly beneficial in buildings with seasonal variations in solar exposure and uneven occupancy in different areas, such as meeting rooms, public areas, classrooms and rooms of different sizes. In addition, these systems significantly reduce energy consumption and carbon emissions compared to older VRF technologies, thanks to innovations such as the sigma heat exchanger and gas injection scroll compressor.
Centrifugal VRF:
Hitachi's Centrifugal VRF is a revolutionary air conditioning system that can be installed completely indoors.
This unique system uses Hitachi reverse displacement compressors and a reverse-drive centrifugal fan for exceptional energy efficiency and long service life. Its ability to operate quietly and efficiently for long periods makes it ideal for high power applications. This system provides installation flexibility by allowing for changes in air supply and return sides. Complying with the latest European regulations, the Centrifugal VRF can be completely concealed indoors, solving potential planning permission issues. In addition, its ability to be combined with different types of indoor units and its integration with advanced control systems make it a versatile and effective solution for a wide variety of HVAC projects.
Energy Efficiency Highlight
Compared to VRF technology 15 years ago, Hitachi's high-performance VRF systems use half the electricity and emit half the CO2. This translates into outstanding efficiency, with an EER (Energy Efficiency Ratio) of 5.50 for cooling and 5.21 for heating. In addition, Hitachi's direct control technology reduces compressor on/off cycling under part-load conditions, achieving energy efficiency 39% above regulatory ratings.
A green future with Hitachi
As we continue to move towards a more sustainable future, the HVAC industry will continue to evolve with the introduction of new technologies and approaches. From the use of AI for fault diagnosis to the implementation of artificial neural networks in the management of electronic expansion valves, innovation is constantly developing.
This new wave of H VAC systems will focus on operation and maintenance throughout the system lifecycle. As part of this, researchers and engineers are applying IoT sensors and AI algorithms to a range of HVAC performance metrics, ensuring a more efficient and sustainable future for building air conditioning.
by Hitachi Cooling & Heating
