Daikin Applied achieves the highest peak in chiller technology, the new VZ inverter water cooled chiller

Daikin Applied UK has launched the next generation of high efficiency chillers. The new inverter screw water cooled EWWD-VZ chiller, offers the highest ESEER ratings in its class, minimising running costs and CO2 emissions to make it the most efficient chiller in the market.

The launch is the latest in a range of innovative products developed by Daikin Applied to support specifiers and end users to stay one step ahead of EU legislation and rising energy costs.

The extremely compact VZ chiller series incorporates a number of advanced technology features that are unique in the market. The new chiller unit offers a 40% reduction in footprint as well as offering a low noise solution with outstanding flexibility to match any specific application.

James Henley, Chiller Product Manager for Daikin Applied UK says, ‘with the changes in the UK energy performance requirements the new VZ inverter water cooled chiller has been designed to exceed all market expectations. Having been part of the launch event at the top of Mont Blanc we have set the precedent for the VZ product being at the pinnacle of chiller design. Client feedback has been fantastic and some can be viewed on the launch event video on the Daikin Applied UK YouTube channel. We have had some instant response and we are already working on a number of interesting performance driven projects’’

Top class efficiency

The advanced design of the new VZ delivers perfect balance of achieving high cooling capacities with reduced power inputs and is especially efficient while running at partial load conditions, typically 97% of the operating time. Operating up to 15% more efficiently than other systems on the market, the new chiller achieves an EER of 5.7 at full load, with an ESEER of up to 8.5 at part load, whilst considering a site specific SEER can be even higher.

Green building design

The new VZ chiller series has been developed to achieve maximum efficiency and is future-proofed to comply with existing design and regulatory standards as well as the long-term EU energy goals. With the EU low carbon roadmap now targeting an 80% reduction overall in CO2 emissions by 2050 and F-Gas legislation driving a reduction in direct emissions, there is more demand than ever for high efficiency HVAC systems that reduce consumption in use.  With up to 50% of building energy usage accounted for by HVAC equipment, the new VZ can help boost the environmental credentials of buildings to achieve a high BREEAM or LEED score with lower running costs, making assets more attractive to building owners and tenants.

Driving technology advances

The new chiller is the result of applied innovation combined with new technology advances. The new chiller’s unique design uses Daikin Applied’s single screw compressors together with Inverter technology and a high efficiency flooded type heat exchanger that offers a 60% improvement in heat transfer if compared to previous chiller series. The series offers a wide range of capacity with single compressor models from 450kW to 1,100kW and the larger dual compressor dual circuit models with an output between 1,200kW to 2,100kW at nominal Eurovent conditions.

Compact design

The width of the new VZ has been greatly reduced to offer a compact solution, this is thanks to a unique design with new single pass counter-flow condenser and an oil separator integrated into the condenser shell. The slim line design of the unit is also available with an optional removable control panel; this makes it ideal for installation through existing doorways less than 900mm in width.

Flexible application

The new VZ chiller boasts the widest operating conditions in its range, offering not only cooling, but hot water production up to 65ºC. Its unique design incorporates Daikin Applied’s Variable Volume Ratio (VVR) technology, which optimises unit performances by adjusting the discharge pressure of the compressor to the condensing pressure. This eliminates both under or over-compression, thus efficiency losses are reduced to minimum, saving energy. Suitable for use, even in noise-sensitive environments a high performance sound proof compressor cabinet option offer noise levels as low as at 81 dBA at full load and 66 dBA at part load at a distance of one metre.With active harmonic filtration and an automatic transfer switch to backup generator, the new chiller series offers a comprehensive solution for critical installations such as data centre applications. Enabled for operation via the Daikin On Site platform the VZ inverter water cooled chiller can be monitored remotely, allowing the system to be accessed with one click for system optimisation and preventative maintenance.

 Efficiency that makes business sense

With an environmental profile that out performs the market competition and delivering outstanding versatility, the new VZ inverter water cooled chiller also delivers on cost-effectiveness, as well as innovation. If compared to a traditional non-inverter product, the VZ can achieve a 25% reduction in running costs with return of investment in less than two years.