The Japanese manufacturer said its new heat pumps have a temperature coefficient of up to 3.4 and sizes ranging from 16 kW to 70 kW. The new solution is said to be particularly suitable for hospitals, hotels and residential buildings.
Japanese heating systems manufacturer Daikin this week unveiled the new EWYE-CZ air-to-water inverter heat pump series.
The company says the new products are particularly suitable for residential applications and boiler replacement projects.
“The EWYE-CZ provides heating in various applications and enables the production of hot water for domestic use,” the company said in a statement. “The series is available in eight sizes from 16 kW to 70 kW, all equipped with Daikin Inverter Scroll Compressor technology. The operating range provides hot water temperatures from 20 C to 70 C, functions effectively under a wide range of environmental conditions and operates at ambient temperatures ranging from -25 C to 40 C.”
According to the manufacturer, the systems also include vapor injection with an economizer, which reportedly allows the delivery of high-temperature hot water. They also use hydrofluorolefin (HFO)-based R-454C as a refrigerant, which has a global warming potential of 145.5, as well as Daikin’s inverter scroll compressors and inverter-controlled fans. “The all-inverter design provides greater adaptability to the building’s cooling and heating loads, minimizing the number of on-off cycles and extending unit life,” the company explains.
The smallest system in the series measures 1,878 mm x 1,152 mm x 802 mm and has a cooling capacity of 16.8 kW. The heating power and coefficient of performance (COP) at temperatures from 7 C to 45 C are 19.0 kW and 3.4 respectively.
The largest product measures 1,878 mm x 3,506 mm x 814 mm and has a cooling capacity of 63.5 kW. The heating capacity and COP at temperatures ranging from 7 C to 45 C are 70.0 kW and 3.17, respectively.
The new heat pumps also feature an anti-legionella control function for the external tank, Daikin’s Tube & Fins (Cu/Al) heat exchanger and the company’s proprietary remote monitoring technology.
“EWYE-CZ can contribute to the project credits in evaluating the energy efficiency of the hydronic system, thanks to inverter-controlled compressors,” Daikin said. “It can operate with a significant temperature difference between the water entering and leaving the system, ensuring that hot water can be supplied to various heating applications within the system.”
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