V-SHAPE Compact

Condenser GCDC for HFCs and propaneGas cooler GGDC for CO2

Fluid cooler GFDC for water/glycol and other fluids

13 – 560 kW

INFO

Adiabatic pre-cooling – with intelligent control

In a class of its own

Our new V-SHAPE Compact series now also offers V-type units for lower capacity ranges, making them ideal for commercial refrigera-tion applications. These units are available as fluid coolers, condensers or gas coolers, and offer maximum performance on a remarka-bly small footprint even when operated in dry mode.

The diameters of the core tubes and the ma-terials used, together with the fin geometries, provide the best possible combination of max-imum capacity and minimum tube volume. In its performance class, when operated to-gether with the optional adiabatic HydroPad pre-cooling system and the wide range of ac-cessories, the V-SHAPE Compact leaves noth-ing to be desired!

Wet or dry – the decision is yours!

The optional HydroPad humidification pad en-ables refrigeration plants to be operated more efficiently, thereby saving money – without ne-cessitating water treatment, labour-intensive maintenance work and wetting of the coil. The additionally available Güntner Hydro Manage-ment GHM pad determines continuously, if re-quested, whether applying water or increasing the fan speed will be more cost-effective.

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Powerfuland smart

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Technical equipment for the V-SHAPE Compact cooler

Compliant with the well-proven Güntner Compact standard, these units are available for capacities rang-ing from approx. 10 kW up to several 100 kW, and offer all the advantages of our latest heat exchanger geome-tries. During their development, we took particular care that the units would also fulfil stringent sound require-ments, which means that these new V-type units are particularly suitable for noise-sensitive applications in inner cities. Their lower tube volume means that they need less refrigerant. This reduces costs – and also de-lights the environment.

Well thought-out design details ensure quick and easy installation on site and extremely easy maintenance. For example, the new crane lugs literally disappear from view when not needed, and the humidification pads can be very easily removed – even without tools.

These robust units in their compact casings made of powder-coated galvanised steel are thoroughly tested for stability. For example, they are challenged with sim-ulated wind and snow loads and tested for earthquake safety. This guarantees you the safety that you expect from Güntner units.

Extremely easy operation � Robust crane lugs to simplify transport by crane � Easy forklift transport � Factory-fitted assembly groups (switch cabinets, Hydro Management, etc.)

� Retractable crane lugs � HydroPads very easy to remove

Our latest heat exchanger geometries � For CO2-optimised heat exchangers with small tube diameters (120 bar, 150 °C)

� Also available as condenser using HFCs: mature technology with internally grooved special copper tubes

� Tube volume reduced by up to 40 % � Unslotted fins with corrugated surfaces for effective cleaning and long-term high performance

Be on the safe side � Maximum operational safety thanks to Güntner’s well-proven quality � Constructional quality, tested and confirmed externally (snow load, wind load, earthquake safety)

� Guaranteed performance thanks to Eurovent certification � In-house test facilities, also for natural refrigerants

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Designed as fluid cooler

Designed as condenseror gas cooler

*if you use Güntner Motor Management with EC fans

Unbelievable energy efficiency � Unit has optimal air and noise properties � Durable, maintenance-free fans � Available in AC and EC technology � ErP-compliant � Ø 630 and 800 mm � Variable fan speed (0 – 10 V signal)

Modern integration into building management* � Optimal control concept with Güntner Motor Management

� Bus-enabled system � Remote maintenance possible � Energy data capture

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Increased efficiency and higher capacity thanks to the adiabatic HydroPad pre-cooling system

The optionally available adiabatic HydroPad pre-cooling system offers valuable advantages. On the one hand, the wetting system can increase the capacity of the unit, allowing you to operate smaller units with a reduced footprint without falling below the required performance, while on the other hand, these accessories enable you to reduce the condensing temperature, which means you can operate any refrigeration system more efficiently and thus save real money.

Water & energyefficient

Maximum efficiencyThe Güntner Hydro Management GHM pad continually monitors the operating state of your heat exchanger and ensures optimal coordination of fan speed and volume of water applied. This reduces your operating costs as far as permitted by the required load and the state of the ambient air.

This also applies for installations in hotter environ-ments. In such cases, adiabatic pre-cooling can greatly reduce the number of hours of transcrit-ical operation. This means that transcritical CO2 systems are also cost-effective in these regions. You will find details of this on the following page.

EFFI

CIEN

T

many advantages

One system

EASY

SAFE

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Safety

Using humidification pads ensures that the heat exchanger always remains dry. This makes this technology particularly suitable for applications that involve high fluid temperatures, such as CO2 gas coolers. In addition, these units can be operated in a wetted state for long periods – without adversely affecting their service life or performance.

The system was explicitly designed to comply with the hygien-ic requirements specified in VDI 2047-2. Only fresh water is applied – there is no recirculation and excessive water simply drains away, so there is no vapour and there are no aerosol emissions. As a matter of course, all the wa-ter-bearing parts can be easily accessed for visual in-spection and maintenance. In dry operation, the GHM pad ensures that both the unit and the supply are reg-ularly drained for reasons of hygiene.

Plug & play

Safety first

Easy to install and commission

Very little effort is needed for installation and maintenance, because all the components are

pre-assembled in the factory and ready to connect. To benefit from the advantages of the HydroPad, you need

only a power supply and a fresh water connection.

For commissioning, you only need to specify the desired set-points, using the familiar and straightforward plain-text display on the controller.

EFFI

CIEN

T

many advantages

One system

EASY

SAFE

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37 °C 27 °C 35 °C

90 °C

29 °C

Bisherige Einsatzgrenze für

transkritische CO2-Anlagen

Erweiterter Einsatzbereich für

transkritische CO2-Anlagen

Let’s head southwards –

with the newly developed adiabatic gas cooler with HydroPad system for transcritical CO2 booster systems

Until recently, it was cost-effective to use transcritical CO2 systems only in Europe in regions north of the Alps. The limitations of use depend on the average annual temperature of the respective location. This determines what we call the CO2 equator. The peri-ods of high air temperature in Mediterranean regions led to excessively long transcritical operating times, meaning that transcritical systems were not cost- effective.

Güntner has now come up with a solution that can shift the CO2 equator further south, thus opening up new markets:

The V-SHAPE Compact gas cooler is fitted with the Güntner HydroPad system; adiabatic pre-cooling of the ambient inlet air significantly reduces the sys-tem’s transcritical operating times.

Tem

pera

ture

in °C

High temperatures+ low humidity = huge adiabatic potential!

transcritical CO2 systems

Previous border for the use of

Expanded zone for the use of

transcritical CO2 systems on

account of gas coolers with HydroPad

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40

35

30

25

20

15

10

5

0

-5

Bisherige Einsatzgrenze für

transkritische CO2-Anlagen

Erweiterter Einsatzbereich für

transkritische CO2-Anlagen

Annual temperature

Air inlet heat exchanger

Poly. (annual temperature)

Poly. (air inlet heat exchanger)

Tem

pera

ture

in °C

Temperatures in Madrid, Spain, over the course of a year

Reduction of the max.air inlet temperatureat the heat exchangerfrom 40 °C to 28 °C

Reduction of the annual transcritical operating hours from approx. 1,920 h/a to approx.300 h/a (-84 %)

Switch point 23°C

January February March April May June July August September October November December

Month

High temperatures+ low humidity = huge adiabatic potential!

transcritical CO2 systems

The chart above shows the temperatures in Ma-drid over the course of a year. On the assump-tion that a CO2 booster system is transcritically operated from an ambient temperature of approx. 23 °C and is equipped with a conventional dry cooler, the transcritical operating hours amount to approx. 1,920 h/a. However, if the ambient air that is sucked in is pre-cooled during these approx. 1,920 h/a before it flows through the heat exchanger,

there will be only approx. 300 h/a with temperatures ≥ 23 °C and hence only approx. 300 h/a of tran-scritical operation of the CO2 booster system.

The use of transcritical CO2 booster systems is therefore cost-effective and the CO2 equator is pushed considerably further south as a result.

Previous border for the use of

Expanded zone for the use of

transcritical CO2 systems on

account of gas coolers with HydroPad

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T P T RH

bar

M

GHM pad – efficient regulation made easy

The humidification control GHM pad controls the wet-ting of the humidification pads. The volume of water needed is determined as a function of the current load requirement and the measured ambient temperature and humidity. Necessary information for this, such as the fan speed, is read out from Güntner Motor Man-agement GMM via the bus communication. This speed data can alternatively be transmitted using a 0 – 10 volt signal.

The system continuously records the amount of wetting water applied, the speed of the fans and the state of the ambient air. This provides the basis for an integrat-ed cost management function that continually decides whether applying water or increasing the fan speed will provide the more efficient mode of operation. This re-duces your operating costs without any loss of perfor-mance, thus saving you real money.

Under partial load, the volume of water is continuously controlled, thus ensuring that the condensing tempera-ture is always held at its setpoint.

GMM Motor Management

GHM padHydro Management

Solenoid valve drain

Connecting to the customer’s system. � Modbus � Profibus � BACnet � ...

Speed

Spee

d

Control valve

Water meter

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Technical details

Available accessoriesOrientation

Fans

Technology: AC/EC Quantity: 1 – 4Arrangement: single-rowØ: 630 / 800 mmAir-flow direction: draw throughVoltage: 230 V/400 VFrequency: 50 – 60 Hz

Condenser HFCs 17 – 425 kW 32 bar46 bar (R-410A, R-32)

2.1 mm

Propane 25 – 557 kW 32 bar 2.1 mm

Gas cooler CO2 25 – 550 kW 120 bar 2.1 mm

Fluid cooler Glycol 13 – 330 kW 16 bar 2.1 / 2.4 / 3.0 mm

Materials

Fluid Casing Fins Core tube Oulet / inlet header

Connections

HFCs/fluids

Galvanised steel,powder-coated

Al (standard)Al epoxy

Copper Cu/VA Copper

CO2 Galvanised steel,powder-coated

Al (standard)Al epoxy

Cu alloy VA Cu (standard)VA

HFCs, CO2 Fluids

� Epoxy resin-coated fins

� Multiple circuit coil

� Fans wired to terminal boxes

� Fans wired to safety switches

� Speed controller

� HydroPad – adiabatic pre-cooling

� Flange connection

� Threaded connection

� Ventilation/drain with ball valve

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KAT

257.

2 / E

N /

01.0

7.20

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