THE NEW SEMI- HERMETIC PRODUCT PORTFOLIO OF GEA
A NEW CAREL SOLUTION FOR HEAT PUMPS : THREE-PHASE INVERTER WITH ACTIVE PFC
www . refrigerationandaircon . co . za RACA Journal I June 2023 51
Products
THE NEW SEMI- HERMETIC PRODUCT PORTFOLIO OF GEA
A NEW CAREL SOLUTION FOR HEAT PUMPS : THREE-PHASE INVERTER WITH ACTIVE PFC
GEA
CAREL
GEA has launched the new GEA Grasso X semi-hermetic screw compressor packages . For the GEA BluX chiller , there will be major technical enhancements and adaptations for optimal implementation of the compressors .
Highlights of the new GEA CompaX series include a wide , stepless adjustable variable internal volume ratio , a wide speed range and the highest safety and reliability through decades of experience in developing screw compressors .
The two GEA CompaX models 350 and 400 have a flow volume of 321 and 372m ³/ h ( at 2 940 rpm ). By using a speed of up to 6 000 rpm and the possibility of a multi-compressor arrangement , the two compressor sizes are suited for small , medium and larger capacity requirements . The volumetric efficiency of ammonia paired with engineering assets such as a wide , stepless adjustable variable internal volume ratio and the wide speed range have taken the screw compressor development to the next level .
Combined with the wide speed range of each screw compressor , the GEA Grasso X package setup provides industry-leading availability , redundancy and efficiencies at the highest level over nearly the entire full and part load range . Refrigeration capacities range from approximately 200 to 1 900 kW ( NH3 , -10/+ 35 ° C ).
The new GEA CompaX series and the other product lines described are developed by GEA Heating & Refrigeration Technologies .
For more information , call : + 27 ( 0 ) 21 555 9000
The innovative power + three-phase inverter with active PFC developed by CAREL is a power converter for applications with variable-speed compressors and permanent magnet synchronous motors , ensuring full compatibility with IEC 61000-3-2 (< 16A ) at any current value .
The unique feature of this inverter – one of the first in the sector – is that it can absorb a sinusoidal input current , making it fully compliant with EN61000 in any load condition and without needing additional passive filtering components . Furthermore , the harmonic distortion of the input current remains less than 5 % across the range .
The electronic architecture of the inverter is designed to increase the available voltage , keeping it stable with lower power consumption and unit performance compared to the traditional configuration is increased thanks to a higher speed reached under the same thermodynamic conditions . The benefits of these features across the entire structure of the solution include better sizing of the wiring and the unit protection systems , as well as greater stability when operating in areas exceeding the compressor voltage limit . The inverter is available in a new metal casing that increases heat exchange and improves EMC performance , in three different versions : with passive heatsink , coldplate adapter or coldplate with water circulation . In each version , the new plug-in connectors make it possible to eliminate additional wiring , making installation quick , simple and flexible , reducing the weight of the electronics in the application as well as using superior materials such as copper .
For more information , call : + 90 530 708 3030
www . refrigerationandaircon . co . za RACA Journal I June 2023 51