Combi Cooler Integrated SystemEnergy effi cient cooling

The unique, straightforward and energy effi cient method of generating cooling capacity for a chilled beam system The Combi Cooler saves up to 39% energy

Fläkt Woods’ Combi Cooler provides completely new opportunities when planning and specifying cooling systems. The Combi Cooler module can be inte-grated and mounted directly into the air handling unit. It is particularly suitable for use together with chilled beam systems.

Cooling can be provided using chilled beams, fancoils or ceiling-mounted cassette chilled beams. Because the Combi Cooler replaces other compo-nents, such as liquid coolers and external

condensers, the unit takes up little space. The Combi Cooler is integrated into the air handling unit so all components are located in the plant room, avoiding outdoor or roof installation. Because the appearance of a building is not changed, renovation work is easier, and noisy condenser fans are not necessary.

Climate change and energy consumption are our shared responsibility. For many years, product development at Fläkt Woods has aimed at constantly improving

energy effi ciency and indoor air quality. This i³ integrated system represents a good example of our success. In business and offi ce spaces, lighting, apparatus and people all represent a heat load. So for an even and comfortable room temperature of 21–24°C, the need for energy for cooling is greater than that for energy for heating. Supplementary cooling is necessary; and this can be achieved very economically using the Combi Cooler.

An integrated system comprising of an ultra-compact AHU

installation precisely matched to the requirements of room-

mounted Chilled Beams, selected from a comprehensive

range of styles and sizes. Combi-Cooler technology

removes the need for expensive and space-

consuming external condenser units, whilst

integrated Room Controllers monitor temp-

erature and provide an adjustable set point

and seamless connection to the BMS.

Guaranteed performance*

• Cooling Capacity matched to room requirements

• Zero condensation with individual room monitoring

• Controlled velocity within the occupied space

• Guaranteed noise generation

• Temperature gradient in the occupied zone

System components:

• Combi Cooler

• Chilled Beams

• Room Controllers

*Subject to compliance with Fläkt Woods system design guidelines.

Combi Cooler system benefi ts

• Guaranteed system performance

• Fitted liquid cooler

• Heating and cooling coil integrated into the supply air

• One module, integrated into the air handling unit

• Optimised for use with chilled beam systems

• Less installation work indoors and no installation work outdoors

• Greater operating reliability because all compo-nents are designed and sized to work together

• Easy commissioning as the unit is factory tested

• Reduces the need for space in the plant room because the combi cooler only has one cooling coil

• No liquid cooler to install in the plant room

• The air conditioning unit is only marginally longer despite all the cooling equipment being built-in to it

• No condensers on the roof to detract from the appearance of the building

• The perfect solution when refurbishing old buildings

• Energy effi cient solution

Chilled beamsIn systems with Chilled Beams, the indoor air is cooled by means of cold water. Chilled beams create a stable and comfortable environment by supplying draught free cooling. By using Chilled Beams up to 75% of the total cooling capacity will be handled by the water. Apart from the energy saving it also means less ductwork for air, smaller air handling units and lower noise.

Combi CoolersThe Combi Cooler, when integrated in the air handling unit, avoids separate air coolers and condensing units. It therefore offers a small footprint and is particularly suitable for use together with chilled beams.

Fan coilsFan coils are most commonly used in areas where individual room control is essential, such as hotels, private and public offi ce buildings, hospitals and schools. Fläkt Woods can offer classic, cassette and satellite fan-coils.

ControlsFläkt Woods offers a wide range of integrated control solutions for air hand-ling and indoor climate systems. Factory mounted an pre-wired controls will reduce installation time and simplify on-site logistics. Preprogrammed and factory tested control applications based on Fläkt Woods extensive expe-rience also means a fast commissioning process and will secure a reliable and energy effi cient operation of the system. Based on support for open standard communication protocols, integration to a building management system can easily be carried out by an independent system integrator.

With our broad range of products and century-old experience, one thing is obvious to us; You have to look at the big picture. It is by carefully combining products into systems, utilizing smart controls, one can achieve the best energy solutions.

When the pieces fi t, you get the big picture

eamswith Chilled Beams, air is cooled by means

Chilled beams create a onment by

ed

o look at the big picture. It is by carefully combining producsmart controls, one can achieve the best energy solution

Air handling unitsOur comprehensive Air Handling Unit offering allows us to deliver optimised solutions for any customer. Our R&D work focuses on reducing energy con-sumption and creating factory complete air handling system solutions with controls. Our experience in the marine, off-shore, pharma-ceutical and hospital markets makes us the perfect partner for such applications.

Saving energy, money and the environment with Fläkt Woods

If you have a small or medium cooling requirement, choose a Combi Cooler

Smart selection tools for system calculation

In Fläkt Woods’ selection tools you will fi nd product dimensions, technical data, LCC-calculations, technical catalogues, directions for installation, adjustment and maintenance.

ACON, our computer-aided selection program for air handling units, offers rapid selection to specifi c project requirements and provides you with all the information you will need. The program is web based and always up-to date without the need to download patches or program updates.

• Product dimensions• Technical data as noise level ,effi ciency etc• LCC (Life Cycle cost)• Always updated documentation linked to the product selection• Current lead times with accurate delivery time projections• e-CAD to incorporate the air handling unit into most CAD programs• Safe and confi dential storage of project data• Easy to use

ExSelAir is Fläkt Woods’ unique web selection tool for air terminal devices, chilled beams, convectors, fan coils and silencers.

• 3D-models of all products• Product performance calculations• Technical catalogues/product information• Product dimensioning in a room• 3D-presentations of fl ow patterns• Directions for installation, adjustment and maintenance

Combi Cooler is suitable for

buildings where the cooling

need is max. 50 W/m2. This

is often enough for offi ces and

business premises.

Offi ces Small industrial units

Refurbishment projects

Shopping centres

Business premises

What makes the Combi Cooler so energy effi cient?

1) The supply air to the air handling unit is only cooled to 18°C instead of the 15°C in traditional systems. This avoids energy-intensive condensation. Because the supply air temperature is slightly higher, areas such as empty meeting rooms with no heat load, maintain a comfortable temperature, and unnecessary cooling is avoided. Electricity consumption is reduced by 14% (including the supplementary power used by the circuit for the chilled beams).

2) Vigorous subcooling of the refrigerant and a higher evaporation temperature reduce the energy required by 29%.

The total energy saving is:100 - (0,71 x 0,86) x 100 = 39%0 =

Cooling for supply air and chilled beams Cooling and heating at the same time

In ”Normal Running” mode, SV2 will adjust the water supplied to the Chilled Beams to 15°C. Combi Cooler can deliver cold water to the chilled beam and heating to the supply air coil at the same time. The supply air coil gets the heat from an inbuilt plate heat exchanger in the main water circuit.

The total available cooling power will be distributed in the most appropriate way to avoid condensation whilst maintaining best possible comfort conditions.

In ”Condense Risk” mode, the water temperature is increased to 17°C, eliminating the risk of condensation. More cooling power can therefore be used in the supply air coil where it can be used without limitation.

+

12°C

15°C

SV2

SV1

Buffer tank

Supplyair

cooling

Combi Cooler delivery border

Chilledbeamcircuit

–

Mode: Normal running

+

6°C

17°C

SV2

SV1

Buffer tank

Supplyair

cooling

Combi Cooler delivery border

Chilledbeamcircuit

–

Mode: Condense risk

+

SV1

Buffer tank

Supplyair

heating

Combi Cooler delivery border

Chilledbeamcircuit

–

SV3

Increasing Temperature and Humidity

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No risk of condensationMode: Normal running

Risk of condensationMode: Condensation risk

Beam Power

Coil Power

SV2

Risk of condensationMode: Condensation risk

Project references

Ramirent

Ramirent is a leading company in the Nordic countries and in Central and Eastern Europe for machinery and equipment rentals used in construction and industry. Fläkt Woods has delivered a system with EU-21 AHU and Combi Cooler to Ramirent’s new offi ce building in Pirkkala. The Air Flow is 1.2 m3/s and the cooling effect is 23 kW.

Raision Villiviini

Fläkt Woods has delivered a ventilation system with EU-22 AHU and Combi Cooler for the refurbish-ment of Raision Villiviini residential houses and offi ces in Helsinki. The Air Flow is 2.3 m3/s and the cooling effect is 46 kW.

Isoroobertinkatu

The Isoroobertinkatu offi ce building in Helsinki was built 1960. In 2009 it was refurbished with state-of-the-art technology. A Fläkt Woods system with EU-31 AHU and Combi Cooler was installed. The Air Flow is 2.5 m3/s and the cooling effect is 59 kW.

Linnan kasarmit

The Linnan Kasarmit offi ce building in Kouvola was refurbished in 2009 and Fläkt Woods delivered a ventilation system with EU-22 AHU and Combi Cooler. The Air Flow is 1.9 m3/s and the cooling effect is 46 kW.

We Bring Air to Life

Fläkt Woods Group SA18, avenue Louis Casaï, CH-1209 Geneva, SwitzerlandTel. +41 22 309 3800email info@fl aktwoods.com www.fl aktwoods.com

See global website for international sales offi ces www.fl aktwoods.com

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Fläkt Woods is a globalleader in air management.We specialise in the design and manufacture of a wide range of air climate and airmovement solutions. And our collective experience is unrivalled.

Our constant aim is toprovide systems thatprecisely deliver requiredfunction and performance, as well as maximise energy effi ciency.

Air Handling Units (AHUs)

Modular, compact and small AHU units. Designed to ensure optimisa-tion of indoor air quality, operational performance and service life.

Air Terminal Devices and Ducts

Supply and exhaust diffusers andvalves for installation on walls, ceilingor fl oor are all included in our largerange and fi t all types of applications.

Chilled Beams

Active induction beams for ventilation, cooling and heating, and passive convection beams for cooling. For suspended or fl ush-mounted ceiling installation – and multi-service confi g-uration. With unique Comfort Control and Flow Pattern Control features.

Residential ventilation

A complete range of products forresidential ventilation. Consists ofventilation units, exhaust air fans andcooker hoods designed to optimiseindoor comfort and save energy.

Energy recoveryDessicant-based product and systems that recover energy, increase ventilation and control humidity.

Fans

Advanced axial, centrifugal andboxed fans for general and specialistapplications. Comprehensive rangeincluding high temperature and ATEXcompliant options. Engineered forenergy effi ciency and minimised lifecycle cost.

Chillers

Air-cooled and water-cooled chillerswith cooling capacity up to 1800kW.Designed to minimise annual energyconsumption in all types of buildings.

Controls and drives

Variable speed drives and controlsystems, all tested to ensure totalcompatibility with our products.Specialist team can advise on energysaving and overall system integration.

Acoustical Products

A complete line of sound attenuating products, including rectangular and round silencers, Media Free silencers, custom silencers and acoustic enclosure panels.

Solutions for all your air climate and air movement needsFläkt Woods is providing solutions for ventilation and air climate for buildings as well as fan solutions for Industry and Infrastructure.