Daikin EWAH240TZ-SSB1 Технические данные онлайн [5/102] 531214

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GENERAL CHARACTERISTICS

Single screw compressor with integrated Inverter and Variable Volume Ratio technology

The EWAH~TZ B is equipped with the latest technology of screw single compressors. Thanks to the careful

design, result of years of experience, the single screw compressors by DAIKIN are characterized by highly

balanced load resulting in reduced stress for the components extending the useful life and improving reliability.

Vibration and sound emission are also reduced. The high volumetric efficiency of single screw compressors makes

them an ideal solution for variable speed applications. Thanks to the Variable Frequency Drive (VFD) technology

the EWAH~TZ B is able to match the actual load required from the plant in every circumstances continuously

modulating the speed of the compressor's motor, which is the most efficient way to perform the capacity control

of the compressor.

The VFD provides lower starting current compared to typical starters such that the inrush current does not

exceed the full load operating current. This feature can help to reduce electrical installation costs, and allows to

meet eventual local requirements on maximum possible inrush current.

The VFD drive is installed directly on the compressor and contained in a specifically designed sealed housing.

The temperature of the electronic circuit is kept constant thanks to the refrigerant cooling system resulting in:

more compact electrical panel

extended life

improved reliability

The compressors for Gold and Platinum series of EWAH~TZ B are equipped with the new brushless DC motors.

These motors are characterized by even higher efficiency and improved reliability.

Variable Volume Ratio Technology

Screw compressors increases the refrigerant pressure by forcing it into a progressive smaller volume, from the

suction to the discharge port. Once that the geometry of the compressor is defined the volume ratio of the

compressor is also defined. The pressure ratio and the Volume ratio are defined as follow and linked through the

equation of state of the gas.

As result the geometry of the compressor define the characteristic pressure ratio. On the market are available

compressors optimized for different pressure ratios to be used according to the application. A compressor

optimized for low compression ratio will not be efficient in operations with high compression ratio and vice versa.