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GEA Bock Semi Hermetic Compressors


These are a high quality range of compressors, suitable for a wide range of applications, including the Atex range for explosive environments and compressors suitable for CO2 and hydrocarbons.

GEA Bock Single Stage Semi Hermetic Compressors - HA Range

Suction gas-cooled HG and air-cooled HA compressors offer a full capacity range of innovative, modern compressor technology with 2, 4, 6 and 8 cylinders. Suitable for all current refrigerants, as well as CO2. For the EX range, GEA is the first European manufacturer to offer compressors certified according to ATEX machinery category 2.

HA Semi Hermetic Compressors

The semi hermetic HA (Hermetic Air-Cooled) series are primarily used for deep freezing.

Special features include:
. Direct intake with external ventilation
. Suction gas intake is done directly into the compressor
. The motor is cooled by an integrated ventilation unit

This reduces the compressed gas temperature and therefore expands the range while at the same time increasing capacity. (Deep freeze, R22, R404A)

Models include: HA12P, HA22e, HA34e, HA4, HA5, HA6

More information at:www.bock.de

GEA Bock Single Stage Semi Hermetic Compressors - HG Range

HG Single Stage Semi Hermetic Compressors

These state of the art, classical, suction gas-cooled compressors provide outstanding running. Special features include:

. Very efficient and reliable
. Service friendly - eg replaceable drive motors
. Oil pump lubrication
. Electronic motor protection
. Suitable for conventional or chlorine-free HFC refrigerants

Models available: HG6, HG7, HG8

HG...e
These are efficiency optimized models.
Technical innovations optimize the motor efficiency, gas flow and efficiency of the valve system.

Models available: HG22e, HG34e, HG44e, HG56e, HG88e

HG...P
With the Pluscom HG12P compressor GEA offers a small capacity compressor for shops and counter installation. High quality machines extremely compact in design and extremely quiet running. A special feature is the option of fully variable speed control with frequency converter technology mounted directly on the compressor.

Models available: HG12P

More information at:www.bock.de

GEA Bock Semi Hermetic Compressors - HG ATEX Range

HG ATEX Compressors

GEA is the first Eurpean manufacturer to offer semi-hermetic compressors certified according to ATEX machine category 2 (zone 1 + 2). In 2014 GEA also included compressors certified according to ATEX machine category 3 (zone 2) in its program. Within the European Union, electrical and mechanical machinery operated in explosive atmospheres must comply with the so-called ATEX ATmospheres EXplosibles) conditions. All ATEX compressors are also approved for operation with the current hydrocarbons.

Based on the HG series compressors the ATEX classification is:

. European explosion protection marking as per directive 94/9/EG
. Machine group II
. Category 2 > zone 1 + 2 for use in explosive atmosphere caused by gas
. Category 3 > zone 2 for use in explosive atmosphere caused by gas
. Ignition source monitoring
. Explosion sub-group IIC or IIB
. Compressor rated for temperature class T3 (max 200 deg C)

Models available:
EX-HG12P, EX-HG22e, EX-HG34e, EX-HG44e, EX-HG56e, EX-HG6, EX-HG7, EX-HG8

More information at:www.bock.de

GEA Bock Semi Hermetic HG CO2 Subcritical Compressors

HG Carbon Dioxide Compressors Subcritical

Based on the well established HG range these compressors are designed specifically for use with CO2 in sub-critical cascade systems, particularly suited to supermarket applications and industrial cooling systems.

Technical Details

* Gas-cooled semi-hermetic piston compressor
* Subcritical CO2 operating conditions
* Displacement from 1.6 - 48.2 m3/h (50 Hz)
* Operating pressures up to 130 bar
* Designed for transcritical CO2: LP 40 bar / HP 55 bar
* Highest efficiency at low temperature applications (< - 15 deg C)

Special Features
* High compressor efficiency for low operating costs
* High durable compressor design
* Wide operating limits and wide frequency range for different applications
* Continuously variable speed control system variable as a plug and play accessory
* Consumes up to 25% less energy compared to compressors using the usual capacity regulator
* Good operational characteristics with low vibration, pulsations and low noise levels
* High stand still pressure for best operating conditions
* Suitable for commercial and industrial refrigeration applications

Models available: HGX12e, HGX22e, HGX34e and HGX4

More information at:www.bock.de

GEA Bock Semi Hermetic HG CO2 Transcritical Compressors

HG Carbon Dioxide Compressors Transcritical
Based on the successful HG series these semi hermetic transcritical CO2 compressors use R744 as natural refrigerant and are ideally suited for use in transcritical CO2 appications.

Technical Information

* Gas-cooled semi-hermetic piston compressor
* Displacement from 6.2 - 38.2 m3/h (50 Hz)
* Operating pressures of up to 130 bar
* Designed for transcritical CO": LP 100 bar / HP 150 bar
* Highest efficiency in the market with COP of more than 1.85 (50 Hz)(1450 U/min), evaporating - 10 deg C, gas cooler outlet 35 deg C/90 bar, superheat 10 K

Special Features
* Highest compressor efficiency for low operating costs
* High durable compressor design
* Reliable and safe oil supply through pump lubrication
* Good operational characteristics with low vibration, low pulsation and low noise level
* Wide operating limits and wide frequency range for different applications
* One of the biggest capacity ranges ( > 38 m3/h transcritical)
* High stand still pressure for best operating conditions
* GEA-Bock has the longest experience with carbon dioxide compressors on the market, going back to 1993
* Applications include heat pumps, commercial refrigeration and industrial refrigeration

Models available: HGX2, HGX34 AND HGX46

More information at:www.bock.de

GEA Bock Hydrocarbon HG HC Semi Hermetic Compressors

HG HC Semi Hermetic Compressors for Hydrocarbons


Hydrocarbons have established themselves as another natural alternative refrigerant besides CO2 in various applications, such a supermarket refrigeration.

Based on the HG series GEA offer a low cost compressor option for use with hydrocarbons. Due to the flammability of hydrocarbons the compressor has some safety related modifications and the design features include:

* Special oil charge
* Motor protection supplied separately for an external installation (eg in the switch cabinet)

These compressors are specially produced to order and GEA stress that the hydrocarbon filled compressors must only be operated by trained personnel. An additional agreement to this effect has to be signed (Art. No. 09996) prior to delivery.

Models available: HG12P, HG22e, HG34e, HG44e, HG7 and HG8

(NB Anyone requiring hydrocarbon training should visit our sister company's website at www.prtc.co.uk - PRTC regularly run one day Hydrocarbon courses leading to the City and Guilds 6187-21 qualification.)

More information at:www.bock.de

GEA Bock Semi Hermetic Two-Stage HGZ Compressors

HGZ Two Stage Semi Hermetic Compressor


Based on the 6 cylinder HG7 compressor a selection of two stage variants are available for extended use in intense cooling. The selection of the liquid intercooler unit is available for three different refrigerants: R404A (R507), R410A and R22, basically involving different expansion valve assemblies.

The optional two stage system is composed of:

* Liquid supercooler
* Expansion valve
* Solenoid valve
* Sight glass
* Filter dryer

The HGZ7 is available in two options:

Option 1
Intermediate pressure line mounted and insulated.
Liquid supercooler, expansion valve, solenoid valve, two sight glasses, filter dryer, everything enclosed separately for individual, external mounting.

Option 2
Liquid supercooler, expansion valve, solenoid valve, two sight glasses, filter dryer attached directly to the compressor, lined and insulated.

Special Features:

* Six cylinder construction
* Stages divided into LP / HP at the ratio of 2 : 1
* Two stage operation with liquid supercooler
* Expansion valve adjusted to refrigerant and application
* Extremely economical and reliable

Models available: HGZ7, HGZX7



More information at:www.bock.de