PRODUCT SNAPSHOT
Future-proof compressors for natural refrigerants
A snapshot of the options GEA can off er to support natural refrigerants. R
efrigeration and air-conditioning technology provides signifi cant benefi ts to all mankind. However, adverse eff ects can impact the global environment and climate budget. While there has been considerable success in reducing the energy required for cold generation, another issue has come into sharper focus: Certain fl uorinated hydrocarbons contribute to the climate-threatening greenhouse eff ect when used as refrigerants and released into the atmosphere. That is why natural refrigerants have moved into the spotlight as alternative solutions for sustainable new process plant concepts. As a technology partner for refrigeration, air-conditioning and heating applications GEA off ers comprehensive advice and support for your switch to the natural refrigerants ammonia (NH3), carbon dioxide (CO2
), and hydrocarbons
(HC/R290). An extensive portfolio of compressors is available for any task. For medium and large industrial applications our successful range includes long-proven ammonia systems. For small- and medium-performance requirements our CO2 and HC compressors provide economically effi cient solutions.
Powerful in subcritical and transcritical CO2 applications
GEA off ers a variety of compressors for commercial and industrial cooling or heat pump applications for use with CO2
as a refrigerant.
What these compressors have in common is that they are optimised for use with CO2
not only
with regard to pressures but also in many other ways. Relevant features include a reliable design (to meet the challenges of CO2
operation), very
smooth running thanks to low levels of vibration and pulsation, quiet operation and incredibly low oil carry-over. The design engineers have also made provision for good thermal separation in the compressor, to the benefi t of high effi ciency. The HGX34 CO2
T (4 cylinders) and HGX46 CO2
T (6 cylinders) series of transcritical CO2 compressors are capable of effi ciency performance
data that is unrivalled by any other comparable product on the market, boasting the highest
56 June 2017
EER/COP values in the wide application limits. This effi ciency is verifi ed by certifi cation of the performance data at several displacement stages by ASERCOM. Available in various frame sizes, the transcritical CO2
swept volumes from 6.2m3
series cover a wide range of /h to 38.2m3
Hz) and are designed for operating pressures up to 130 bar.
The portfolio includes the HGX12e CO2 cylinders), HGX22e CO2 CO2
(four cylinders) and HG4 CO2 series for subcritical CO2 (two
(two cylinders), HGX34e (four cylinders)
applications, catering a
range of swept volumes from 1.6 to 48.2m3 50Hz).
/h (at
The whole range is applicable for variable speed drive. With subcritical CO2
/h (at 50 positions compressors
supporting an adjustment range from 25 or 30 to 70Hz and transcritical CO2
compressors (four
and six cylinders) supporting 20Hz to 70Hz, they are able to cover a very wide performance range, giving rise to refrigeration capacity that is fl exible enough to adapt to prevailing requirements. New on the market is the GEA Bock HG56e HC series for the use of hydrocarbons – this combines state-of-the-art technology with GEA design standards, which have proven over decades. The series replaces the previous 4-cylinder series HG5 and a part of the HG6 compressors.
The new 6-cylinder compressors off er higher
effi ciency and a quieter operation compared to their predecessors.
The new GEA Bock HG56e HC also off ers the following advantages: ■ New designed housing with optimized gas fl ow ■ Improved valve plate system ■ Durable engine for demanding applications with hydrocarbons
■ The latest generation of highly effi cient electric motors
■ Standard mounting
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Three sizes of the GEA HG56e series, cover the range from 73.8 m³/h to 100.4 m³/h displacement (at 50 Hz). As a result, the GEA HC series can guarantee the most extensive performance coverage in the industry. The new compressor series for hydrocarbons combines high effi ciency, running smoothness, compactness and a long life cycle. Due to optimised engine components and an adapted specifi c oil fi lling, all models off er highest performance, even under very demanding operating conditions of hydrocarbons. Natural refrigerants are gaining ground The focus is mainly on our compressors that are suitable for the use of natural refrigerants. For the use with the refrigerant CO2
GEA off ers
compressors that are not only optimized with regard to pressures, but also for the use with CO2
in many other respects.
This includes a robust design for the partially demanding operating conditions with CO2
, a very
smooth and quiet operation due to low vibration and pulsation and a very low oil carry over. In the last years hydrocarbons have established themselves as another natural alternative. The GEA compressors of the hydrocarbon series meet all requirements of the F-Gas regulation. Thus, they can be used for the long-term and increase the planning dependability for system manufacturers, users and investors.
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