Econet Presentation 2007 Eng
- 1. ECONET © Fläkt Woods 1
- 2. High Efficient Energy recovery systems 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 © Fläkt Woods 2
- 3. ECONET® The new heat/cooling recovery system The traditional way The ECONET way Unique for ‘runECONETcoils’ Unique for the around way 1 component, 4 functions Flexible installation and performance Noleakage between the supply and return air lower pressure drops,shorter AHU Increased heat recovery efficiency 60…75% performance (no odour and bacteria transfer) Able to use coolingfor corrossive and polluted air Can also be used recovery Allways prepared for cooling and cooling recovery Possibility to utilize process/waste heat Perfect for district cooling/heating © Fläkt Woods 3
- 4. ECONET® References, hygienical application Hospital/pharma applications more than 200 (totally > 950) systems sold. ECONET® Janssen Pharmacia: Antwerpen - Belgium ECONET® ECONET® Lindisbergs lasarett: Lindisberg - Sweden ECONET® Linköping: Linköping - Sweden ECONET® ECONET® ECONET® Jyväskylän keskussairaala: Jyväskylä - Finland ECONET® ECONET® Central hospital: Karlstad - Sweden ECONET® Hospital Raahe: Raahe - Finland ECONET ® ECONET® ECONET® ECONET® University hospital: Stavanger - Norway ECONET® ECONET® Turku hospital TYKS: Turku - Finland Odense hospital: Odense - Denmark Hospital St Olav: Trondheim - Norway ECONET® Raisio hospital: Raisio - Finland Brönnöysund hospital: Brönnöy - Norway Seinäjoki hospital, Seinäjoki - Finland © Fläkt Woods 4
- 5. ECONET® Benefits (investment) 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. © Fläkt Woods 5
- 6. ECONET® Benefits (impact of heating and cooling network) Berlin: No recovery Ecoterm ECONET® 8,8 m³/s, 31 680 m³/h, winter -12°C -> 20 °C summer 32°C -> 16 °C AHU size EU-53 Cooling Chiller size 238 kW 238 kW 167/120 kW Cold water flow 9,4 l/s 9,4 l/s 2,6 l/s Heating Boiler size 338 kW 149 kW 99 kW….0 kW Hot water flow 4,0 l/s 1,8 l/s 0,6 l/s © Fläkt Woods 6
- 7. ECONET® Case cooling Reduction of cooling power by utilizing cooling recovery and IEC (95 kW) The exhaust air 28°C 18°C 19°C 24°C 24°C 238 kW 22ºC (120 kW) 11°C 32°C 16°C The supply air 44% of the cooling power needed taken from cooling recovery © Fläkt Woods 7
- 8. ECONET® Example, Westend First Frankfurt 50% of the cooling power needed taken from cooling recovery © Fläkt Woods 8
- 9. ECONET® Case cooling Reduction of cooling power by utilizing cooling recovery (50 kW) The exhaust air 29°C 18°C 24°C 24°C 26ºC (167 kW) 11°C 32°C 16°C The supply air 23% of the cooling power needed taken from cooling recovery © Fläkt Woods 9
- 10. ECONET® Case cooling, impact of chiller and pipework ECONET combined with a chiller Cooling recovery + IEC 120 kW, 9/15°C, 4,8 l/s 9/20°C, 2,6 l/s Or or Cooling recovery 167 kW, 9/15°C, 6,6 l/s 9/24°C, 2,6 l/s •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 238 kW, 6/12°C, 9,4 l/s © Fläkt Woods 10
- 11. ECONET® Case cooling, impact of chiller Chiller size Reduction of the chiller: 100.00 % 90.00 % 80.00 % By 30%, utilizing cooling 70.00 % recovery 60.00 % 100 % 100 % 50.00 % 40.00 % 70 % By 50 %, utilizing cooling 30.00 % 50 % recovery combined with IEC 20.00 % 10.00 % 0.00 % No recovery Traditional energy recovery ECONET ECONET utilizing waste heat or/and IEC Reduction of the chiller size 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) © Fläkt Woods 11
- 12. ECONET® Case cooling, impact of pipe work Cold water flow Reduction of the cold 100.00 % water flow: 90.00 % 80.00 % 70.00 % By approx. 70% by using 60.00 % 100 % 100 % ECONET 50.00 % 40.00 % 30.00 % 20.00 % 28 % 28 % 10.00 % 0.00 % No recovery Traditional energy ECONET ECONET utilizing recovery w aste heat or/and IEC Reduction of cold water flow inside the building Berlin: 8,8 m³/s, 31 680 m³/h, CAV, 8760 h/year, size EU-53, 100% => 9,4 l/s(cold water flow) © Fläkt Woods 12
- 13. ECONET® Benefits (investment) 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. © Fläkt Woods 13
- 14. ECONET® Benefits (impact of heating and cooling network) Berlin: No recovery Ecoterm ECONET® 8,8 m³/s, 31 680 m³/h, winter -12°C -> 20 °C summer 32°C -> 16 °C AHU size EU-53 Cooling Chiller size 238 kW 238 kW 167/120 kW Cold water flow 9,4 l/s 9,4 l/s 2,6 l/s Heating Boiler size 338 kW 149 kW 99 kW….0 kW Hot water flow 4,0 l/s 1,8 l/s 0,6 l/s © Fläkt Woods 14
- 15. ECONET® Case heating Reduction of heating power by utilizing superior heat recovery (239 kW) The exhaust air +23°C 18°C (99 kW) 149 kW 27°C -12°C +20°C The supply air 75% of the heating power needed taken from heat recovery © Fläkt Woods 15
- 16. ECONET® Case heating, impact of boiler size Boiler size Reduction of the boiler: 100.00 % 90.00 % By 71%, by using ECONET 80.00 % instead of no heat recovery at all 70.00 % 60.00 % 100 % 50.00 % By 40 %, by using ECONET 40.00 % instead of traditional heat 30.00 % 44 % recovery 20.00 % 29 % 10.00 % By 100%, by using ECONET 0% 0.00 % No recovery Traditional energy recovery ECONET ECONET utilizing waste heat combined with ‘waste heat’ or/and IEC Reduction of the the boiler size 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) © Fläkt Woods 16
- 17. ECONET® Case heating, impact of pipe work Hot water flow Reduction of the hot 100.00 % water flow: 90.00 % 80.00 % By 85%, by using ECONET 70.00 % instead of no heat recovery at all 60.00 % 100 % 50.00 % 40.00 % By 76 %, by using ECONET 30.00 % 44 % instead of traditional heat 20.00 % recovery 10.00 % 15 % 0.00 % No recovery Traditional energy recovery ECONET Reduction of hot water flow inside the building 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) © Fläkt Woods 17
- 18. ECONET® Benefits (LCC, investment/running costs) 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. © Fläkt Woods 18
- 19. ECONET® Benefits (impact of running costs) EU-53 (8,8 m³/s, 31 680m³/h) No recovery Ecoterm ECONET® 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 Heating energy 769 MWh 211 MWh 136 MWh Cooling energy 155 MWh 155 MWh 129 MWh © Fläkt Woods 19
- 20. ECONET® Cas e he ating , impact of e ne rg y cons umption Heating Reduction of the heating 100.00 % energy: 90.00 % 80.00 % 70.00 % By 72%, by using ECONET instead of no heat recovery at all 60.00 % 100 % 50.00 % 40.00 % By 36 %, by using ECONET 30.00 % instead of traditional heat 20.00 % 27 % recovery 10.00 % 18 % 0% 0.00 % Reduction of 100% of primary No recovery Traditional heat recovery ECONETFWG energy ECONET utilizing w aste heat recovery or/and IEC energy, by using ECONET Primary heating energy combined with ‘waste heat’ Berlin: 8,8 m³/s, 31 680 m³/h, CAV, 8760 h/year, size EU-53, 100% => 769 MWh/year © Fläkt Woods 20
- 21. ECONET® Cas e he ating , impact of e ne rg y cons umption Cooling Reduction of the cooling 100.00 % energy: 90.00 % 80.00 % 70.00 % By 17%, utilizing cooling 60.00 % recovery combined with IEC 50.00 % 100 % 100 % 100 % 83 % 40.00 % 30.00 % 20.00 % 10.00 % The warmer the climate is the 0.00 % more You save in cooling No recovery Traditional heat recovery ECONETFWG energy recovery ECONET utilizing waste heat or/and IEC energy consumption Primary cooling energy Berlin: 8,8 m³/s, 31 680 m³/h, CAV, 8760 h/year, size EU-53, 100% => 155 MWh/year © Fläkt Woods 21
- 22. ECONET® Benefits (Space requirements for AHU) 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. © Fläkt Woods 22
- 23. 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) …+1204 mm © Fläkt Woods 23
- 24. ECONET® Applications Hospital, Pharma (offices) No odour,bacteria, virus transfer Easy to use cooling recovery High heat recovery ratio, 60-75% Perfect for VAV system Utilization of waste heat (condensate heat from chillers) Smaller foot-print for AHU Supermarkets, shopping centres Utilization of waste heat (condensate heat from chillers) Easy to use cooling recovery High heat recovery ratio, 60-75% Perfect for VAV system Smaller 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 © Fläkt Woods 24
- 25. ECONET® Summary Up to 85-90% of the costs for the customer during the life time of the system are related to the running costs. Energy 85% Investment 10% Maintenance 5% Something to think about during 20 years! © Fläkt Woods 25