Bitzer showcased its next generation of reciprocating compressors at Chillventa Rossija in Moscow in February.
It is the fourth year the international trade fair has been held in Russia and highlights included Bitzer's new Ecoline series.
Bitzer has managed to optimise the coefficient of performance (COP) by up to 12 per cent across the entire series, particularly when it comes to applications with lower condensing temperatures. Over 100,000 semi-hermetic reciprocating compressors have already been sold since they were launched in April 2013.
In addition to R134a, reciprocating compressors are also compatible with the refrigerants R404A, R407A, R407C, R407F, R507A, R290 and R1270.
Thanks to the suction gas-cooled frequency inverter, the varispeed reciprocating compressors can be infinitely adjusted for maximum efficiency at part-load, making it possible to reduce fluctuations in suction pressure and cycling rates and thus minimise energy costs.
Using suction gas cooling ensures that electrical components remain at optimum temperature, rendering a fan superfluous.
With cooling capacities ranging from 27 to 51 kilowatts at 50 hertz, the Orbit 6 series of scroll compressors offer a high degree of isentropic efficiency, and according to the manufacturer, are up to five per cent more efficient than competitor models.
The five models of the Orbit series support a host of applications for air conditioning systems with condensing temperatures of up to 68°C and low sound levels. They are available in five capacity steps: 10, 12, 13, 15 and 20 hp.
Bitzer also showcased a cutaway model of the CSH series, which boasts exceptional part-load efficacy thanks to optimised oil management.
The three screw compressors of the CSV series were designed for use in air conditioning systems, heat pump applications and industrial as well as process cooling.
With an exceptionally high ESEER value of over five, Bitzer says the CSV series is unrivalled among air-cooled water chillers with dry expansion.
One of the compressor’s unique strengths is its high energy efficiency.
With its OS series, Bitzer offers compressors for the natural, carbon-neutral refrigerant ammonia (R717).
The universal OSKA8591 screw compressors were designed for use in large-scale commercial and industrial applications and make it possible to combine tried-and-tested OS technology with the innovative characteristics of the CSH series.
And that offers plenty of benefits, Bitzer says, such as a high cooling capacity and, from the OS.85 model onwards, a three-scale or infinitely adjustable slide control.
The performance range of the individual compressors enables up to 10 displacement volumes, and parallel operation is possible with up to six compressors.
The OS.85 series offers displacement volumes between 315 and 535 cubic meters per hour. For more information, see www.bitzer.de