© Fläkt Woods 1

ECONET

© Fläkt Woods 2

Fläkt Woods is a world leader in energy recovery systems for air handling units. The most popular systems are:

Run around coils solutions, ECONET or Ecoterm

No risk of odour and bacteria transfer

Free to separate the supply air unit from the exhaust air unit

Rotary heat exchanger

Good heat recovery efficiency

Risk of odour and bacteria transfer

Plate heat exchanger

Simple solution

Moderate heat recovery

Small risk of odour and bacteria transfer

High Efficient Energy recovery systems

© Fläkt Woods 3

ECONET® The new heat/cooling recovery system

The traditional wayThe ECONET way

Unique for ‘run around coils’ Flexible installation and performance

No leakage between the supply and return air

(no odour and bacteria transfer)

Can also be used for corrossive and polluted air

Unique for the ECONET way1 component, 4 functions

lower pressure drops,shorter AHU

Increased heat recovery efficiency 60…75% performance

Able to use cooling recovery

Allways prepared for cooling and cooling recovery

Possibility to utilize process/waste heat

Perfect for district cooling/heating

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Hospital/pharma applications more than 200 (totally > 950) systems sold.

Janssen Pharmacia: Antwerpen - Belgium

Lindisbergs lasarett: Lindisberg - Sweden

Linköping: Linköping - Sweden

Jyväskylän keskussairaala: Jyväskylä - Finland

Central hospital: Karlstad - Sweden

Hospital Raahe: Raahe - Finland

University hospital: Stavanger - Norway

Turku hospital TYKS: Turku - Finland

Odense hospital: Odense - Denmark

Hospital St Olav: Trondheim - Norway

Raisio hospital: Raisio - Finland

Brönnöysund hospital: Brönnöy - Norway

Seinäjoki hospital, Seinäjoki - Finland

ECONET®

ECONET®

ECONET®

ECONET®

ECONET®

ECONET®

ECONET® ECONET®

ECONET®

ECONET®

ECONET® ECONET®

ECONET®

ECONET®

ECONET®

ECONET®

ECONET®

ECONET® References, hygienical application

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ECONET reduces the investment costs Reduces the size of the chiller Reduced cold water flows, pipe work dimensions

Reduces the size of the boiler Reduced hot water flows, pipe work dimensions

Can utilize cheap waste heat

Reduced energy costs Better energy recovery Possibility to use waste heat

Smaller foot-print 1 component instead of 3 components in the supply air unit

Shorter installation time Pre-fabricated pump unit with pre-programmed control box.

ECONET® Benefits (investment)

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No recovery Ecoterm ECONET® Berlin:

8,8 m³/s, 31 680 m³/h, winter -12°C -> 20 °C summer 32°C -> 16 °C

AHU size EU-53

ECONET® Benefits (impact of heating and cooling network)

Cooling

Chiller size

Cold water flow

Heating

Boiler size

Hot water flow

238 kW

9,4 l/s

338 kW

4,0 l/s

238 kW

9,4 l/s

149 kW

1,8 l/s

167/120 kW

2,6 l/s

99 kW….0 kW

0,6 l/s

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22ºC 11°C

32°C 16°C

18°C 24°C

28°C 19°C 24°C

The exhaust air

The supply air

(95 kW)

Reduction of cooling power by utilizing cooling recovery and IEC

(120 kW)

44% of the cooling power needed taken from cooling recovery

238 kW

ECONET® Case cooling

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50% of the cooling power needed taken from cooling recovery

ECONET® Example, Westend First Frankfurt

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26ºC 11°C

32°C 16°C

18°C 24°C

29°C 24°C

The exhaust air

The supply air

(50 kW)

Reduction of cooling power by utilizing cooling recovery

(167 kW)

23% of the cooling power needed taken from cooling recovery

ECONET® Case cooling

© Fläkt Woods 10

9/20°C, 2,6 l/s

or

9/24°C, 2,6 l/s

ECONET combined with a chiller

•Reduced size of chiller

•Reduced size of pipe work

•Reduced liquid flow

•A higher evaporating temperature in the chiller gives us a smaller and a more efficient chiller

The traditional way

Cooling recovery + IEC 120 kW, 9/15°C, 4,8 l/s

Or

Cooling recovery 167 kW, 9/15°C, 6,6 l/s

238 kW, 6/12°C, 9,4 l/s

ECONET® Case cooling, impact of chiller and pipework

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Reduction of the chiller:

By 30%, utilizing cooling recovery

By 50 %, utilizing cooling recovery combined with IEC

Berlin:

8,8 m³/s, 31 680 m³/h, CAV, 8760 h/year, summer 32°C -> 16 °C, size EU-53, 100% => 238 kW (chiller)

100 % 100 %

70 %50 %

0.00 %10.00 %20.00 %30.00 %40.00 %50.00 %60.00 %70.00 %80.00 %90.00 %

100.00 %

No recovery Traditional energy recovery ECONET ECONET utilizing waste heator/and IEC

Reduction of the chiller size

Chiller size

ECONET® Case cooling, impact of chiller

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100 % 100 %

28 % 28 %

0.00 %

10.00 %

20.00 %

30.00 %

40.00 %

50.00 %

60.00 %

70.00 %

80.00 %

90.00 %

100.00 %

No recovery Traditional energyrecovery

ECONET ECONET utilizingwaste heat or/and IEC

Reduction of cold water flow inside the building

Cold water flow

Berlin:

8,8 m³/s, 31 680 m³/h, CAV, 8760 h/year, size EU-53, 100% => 9,4 l/s(cold water flow)

ECONET® Case cooling, impact of pipe work

Reduction of the cold water flow:

By approx. 70% by using ECONET

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ECONET reduces the investment costs Reduces the size of the chiller Reduced cold water flows, pipe work dimensions

Reduces the size of the boiler Reduced hot water flows, pipe work dimensions Can utilize cheap waste heat

Reduced energy costs Better energy recovery Possibility to use waste heat

Smaller foot-print 1 component instead of 3 components in the supply air unit

Shorter installation time Pre-fabricated pump unit with pre-programmed control box.

ECONET® Benefits (investment)

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No recovery Ecoterm ECONET® Berlin:

8,8 m³/s, 31 680 m³/h, winter -12°C -> 20 °C summer 32°C -> 16 °C

AHU size EU-53

ECONET® Benefits (impact of heating and cooling network)

Cooling

Chiller size

Cold water flow

Heating

Boiler size

Hot water flow

238 kW

9,4 l/s

338 kW

4,0 l/s

238 kW

9,4 l/s

149 kW

1,8 l/s

167/120 kW

2,6 l/s

99 kW….0 kW

0,6 l/s

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-12°C +20°C

+23°C

27°C

18°C

The supply air

The exhaust air

Reduction of heating power by utilizing superior heat recovery

(239 kW)

(99 kW)

75% of the heating power needed taken from heat recovery

149 kW

ECONET® Case heating

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Berlin:

8,8 m³/s, 31 680 m³/h, CAV, 8760 h/year, winter -12°C -> 20 °C, size EU-53, 100% => 338 kW (boiler)

100 %

44 %29 %

0 %0.00 %10.00 %20.00 %30.00 %40.00 %50.00 %60.00 %70.00 %80.00 %90.00 %

100.00 %

No recovery Traditional energy recovery ECONET ECONET utilizing waste heator/and IEC

Reduction of the the boiler size

Boiler size

ECONET® Case heating, impact of boiler size

Reduction of the boiler:

By 71%, by using ECONET instead of no heat recovery at all

By 40 %, by using ECONET instead of traditional heat recovery

By 100%, by using ECONET combined with ‘waste heat’

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Berlin:

8,8 m³/s, 31 680 m³/h, CAV, 8760 h/year, winter -12°C -> 20 °C, size EU-53, 100% => 4 l/s (60/40°C, hot water flow)

100 %

44 %

15 %

0.00 %

10.00 %

20.00 %

30.00 %

40.00 %

50.00 %

60.00 %

70.00 %

80.00 %

90.00 %

100.00 %

No recovery Traditional energy recovery ECONET

Reduction of hot water flow inside the building

Hot water flow

ECONET® Case heating, impact of pipe work

Reduction of the hot water flow:

By 85%, by using ECONET instead of no heat recovery at all

By 76 %, by using ECONET instead of traditional heat recovery

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ECONET reduces the investment costs Reduces the size of the chiller Reduced cold water flows, pipe work dimensions

Reduces the size of the boiler Reduced hot water flows, pipe work dimensions

Can utilize cheap waste heat

Reduced energy costs Better energy recovery Possibility to use waste heat

Smaller foot-print 1 component instead of 3 components in the supply air unit

Shorter installation time Pre-fabricated pump unit with pre-programmed control box.

ECONET® Benefits (LCC, investment/running costs)

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EU-53 (8,8 m³/s, 31 680m³/h) Running time: 24 hour/day, 365 d/y, CAV system Duration curve: Berlin Supply air temperature: 20°C…16°C Exhaust air temperature: 22°C…24°C Efficiency variants for the coils ECONET Ecoterm 5/supply air coil 2/supply air coil 3/exhaust air coil 3/exhaust air

ECONET® Benefits (impact of running costs)

No recovery Ecoterm ECONET®

Heating energy

Cooling energy

769 MWh 211 MWh 136 MWh

155 MWh 155 MWh 129 MWh

© Fläkt Woods 20

Berlin:

8,8 m³/s, 31 680 m³/h, CAV, 8760 h/year, size EU-53, 100% => 769 MWh/year

100 %

27 %18 %

0 %0.00 %

10.00 %

20.00 %

30.00 %

40.00 %

50.00 %

60.00 %

70.00 %

80.00 %

90.00 %

100.00 %

No recovery Traditional heat recovery ECONETFWG energyrecovery

ECONET utilizing waste heator/and IEC

Primary heating energy

Heating

ECONET® Case heating, impact of energy consumption

Reduction of the heating energy:

By 72%, by using ECONET instead of no heat recovery at all

By 36 %, by using ECONET instead of traditional heat recovery

Reduction of 100% of primary energy, by using ECONET combined with ‘waste heat’

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Berlin:

8,8 m³/s, 31 680 m³/h, CAV, 8760 h/year, size EU-53, 100% => 155 MWh/year

100 % 100 % 100 %

83 %

0.00 %

10.00 %

20.00 %

30.00 %

40.00 %

50.00 %

60.00 %

70.00 %

80.00 %

90.00 %

100.00 %

No recovery Traditional heatrecovery

ECONETFWG energyrecovery

ECONET utilizing wasteheat or/and IEC

Primary cooling energy

Cooling

ECONET® Case heating, impact of energy consumption

Reduction of the cooling energy:

By 17%, utilizing cooling recovery combined with IEC

The warmer the climate is the more You save in cooling energy consumption

© Fläkt Woods 22

ECONET reduces the investment costs Reduces the size of the chiller Reduced cold water flows, pipe work dimensions

Reduces the size of the boiler Reduced hot water flows, pipe work dimensions

Can utilize cheap waste heat

Reduced energy costs Better energy recovery Possibility to use waste heat

Smaller foot-print 1 component instead of 3 components in

the supply air unit

Shorter installation time Pre-fabricated pump unit with pre-programmed control box.

ECONET® Benefits (Space requirements for AHU)

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…+1204 mm

ECONET® Case space in the equipment room

Reduction of the AHU length:

By 1,2 meter

Reduction of the AHU foot-print:

By 3,1 m²

Reduction of the AHU weight:

By 418 kg (3288/3706 kg)

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Hospital, Pharma (offices)No odour,bacteria, virus transferEasy to use cooling recoveryHigh heat recovery ratio, 60-75%Perfect for VAV systemUtilization of waste heat (condensate heat from chillers)Smaller foot-print for AHU

Supermarkets, shopping centresUtilization of waste heat (condensate heat from chillers)Easy to use cooling recoveryHigh heat recovery ratio, 60-75%Perfect for VAV systemSmaller foot print for AHU

Industry

Utilization of waste heat (process heat)High heat recovery ratio, 60-75%Can be used with corrosive and polluted exhaust air

ECONET® Applications

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Up to 85-90% of the costs for the customer during the life time of the system are related to the running costs.

Something to think about during 20 years!

Energy 85%

Investment 10%

Maintenance 5%

ECONET® Summary