World News

Industry news and insights from Europe and around the World

UK News

Latest news and developments in the United Kingdom


Keep up-to-date with the latest new products and technology


General articles, applications and industry analysis

Daikin chiller offers advanced options


EUROPE: Daikin’s next generation EWAD-TZ B chiller is available as a single- or dual-circuit unit, with cooling capacities from 170kW up to 700kW.

Building on its predecessor – the EWAD-TZ launched in 2013 – the latest model combines a screw compressor design and integrated inverter technology with Variable Volume Ratio technology (VVR). This is said to allow compressors to modify their own geometry, varying the condenser pressure charge to maintain the highest compression efficiency.

Daikin says its compressor motors have been optimised to operate at different speeds, with selection of the most efficient motor according to the nominal frequency of the chiller, to ensure the highest unit performance. Improved control logic for the economiser cycle control offers even more advantages and greater reliability.

The advanced design of the heat exchangers uses the latest available technology to deliver a high heat transfer coefficient while minimising pressure drops. 

A number of options and accessories allow end users to adjust the new system to their specific needs, says Daikin. Three efficiency levels are offered with ESEERs from 4.4 to 5.5 and three sound levels: standard; low, with special connections at the suction of each compressor to reduce vibration transmission; and reduced with the special compressor connections and the compressors enclosed in a soundproof cabinet.

The EWAD-TZ B chiller incorporates a new epoxy-coated microchannel condenser coil, using R134a and operating with a two-pass process. In the first pass, the high-pressure superheated refrigerant is de-superheated and condensed into a liquid. The second pass sub-cools the liquid refrigerant below its saturation temperature prior to entering an expansion device. This construction is said to provide a coil that is typically 50% lighter and uses, on average, 50% less refrigerant when compared to a traditional copper-tube/aluminium-fin coil design. Heat transfer is also enhanced. 


Latest News

4th March 2024

Copeland to relocate recip production to India

USA/MEXICO: Copeland is to relocate its CRi reciprocating compressor production from its plant in Reynosa, Mexico, to its existing compressor factory in Atit, India.
4th March 2024

AHT launches Vento multideck for CO2

AUSTRIA: AHT Cooling Systems has launched a CO2 version of its well-established Vento refrigeration multideck.
4th March 2024

UK adds 8,000 heat pump installers in 2023

UK: The number of qualified heat pump installers in the UK grew by nearly 8,000 last year, a 166% increase on 2022.
3rd March 2024

Green Skills Hub opens in Stockport

UK: A new Green Skills Hub has opened its doors at Stockport College in a bid to tackle the UK’s green skills gap.
2nd March 2024

Creating an alternative showcase

UK: A relocation to new premises by UK Alternative Energy Ltd has enabled the Lincoln-based renewable energy specialist to incorporate heat pumps, solar PV and battery storage solutions.
1st March 2024

Heat pump grant requests up 39%

UK: Applications for the UK’s boiler upgrade scheme in January were up 39% on January last year, according to figures from the Department for Energy Security and Net Zero.