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NR Koeling BV

HKCI Seminar. HKCI Seminar. HKCI Seminar. Hongkong 28 . December 2012. NR Koeling BV. NR Koeling BV. NR Koeling BV. I mproving Concrete Quality by cooling, to prevent damages, complains and follow-up-costs. NR Koeling BV. NR Koeling BV. NR Koeling BV. NR Koeling BV.

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NR Koeling BV

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  1. HKCI Seminar HKCI Seminar HKCI Seminar Hongkong 28 . December 2012 NR Koeling BV NR Koeling BV NR Koeling BV

  2. Improving Concrete Quality by cooling, to prevent damages, complains and follow-up-costs NR Koeling BV NR Koeling BV NR Koeling BV NR Koeling BV

  3. NR Koeling BV

  4. Methods of Cooling CONCRETE - Heat - Balance • Chiller plant • Flake Ice plant • Aggregate cooling by ►spraying cold water - on a special conveyor belt - inside a special storage silo - Aggragate cooling by► blowing cold air into storage silo • Sand Cooling by► blowing cold air • Complete solution • Configuration of the concrete cooling plant - Discussion NR Koeling BV

  5. Heat - Balance NR Koeling BV

  6. Heat Balance Mix Formula1 m3 concrete 9.555 Wet-Belt 10°C 2.730 6.615 15°C 2.835 Sand Cooling Cement 55°C 3.168 65 kg 5°C 125 kg 5°C 750 1.050 Chilled water 60 kg -4°C -4.920 Flake Ice Mixer 400 36,9°C Temp. After cooling 7,7°C 4.963 13,6°C 8.743 24,2°C 32,3°C 15.568 20.788 * Heatload = mass (kg) x specified heat ( kcal) x temp (°C) = kcal/hr Concrete temperature 8°C Mixing capacity 220 m³/h Daily production 3.100 m³/day NR Koeling BV

  7. Heat Balance : water + ice NR Koeling BV

  8. Heat Balance : water + ice + aggr + sand NR Koeling BV

  9. Heat Balance : CoolingCapacities NR Koeling BV

  10. ChilledWater NR Koeling BV

  11. ChilledWater Largeair-coolerchiller plant (Ethiopia) SmallChiller plant NR Koeling BV

  12. Water basin Panama Channel Project Water cooledchiller unit NR Koeling BV

  13. Flake - Ice NR Koeling BV

  14. Flake-ICE Ice makers (NH3) Cold water: 5°C Ice Maker No1 Ice Maker No2 Ice Maker No3 Ice Maker No4 Bin Cooling Ice Ice Ice Ice -7°C Elevating crew conveyor FLAKE ICE Rake System Ice Day-Tank IsolatedIcestorage NH3: Liquid +37°C Air Air Evaporating condenser NH3: Suction -34°C Compressor Compressor Unit Ammonia (NH3) Air NR Koeling BV

  15. Flake-ICE Ice Maker FlakeIce Plant Flake Ice NR Koeling BV

  16. Flake-ICE Capacity of the FlakeIce plant for the Panama project • Total capacity 330 Ton/24Hr • Number of Ice makers 6 pc • Number of Compressor units 3 pc • Compressor capacity (each) 526 kW • Evaporating temperature -34°C • Refrigerant Ammonia • Rake system capacity 2x 72 Ton • Volume Isolated Ice storage 900 m3 • Number of Day-tanks 4 pc • Number of elevating crew conveyors 2 pc NR Koeling BV

  17. Flake-ICE Rake systemunderconstruction Rake system under construction Flake Ice Plant Tocoma Dam Venezuela Ice makers installed NR Koeling BV

  18. Aggregate Cooling Concept Spraying cold water the aggregates handled on a special Conveyor Wet - belt NR Koeling BV

  19. AggregateWet-Belt AGGREGATE FROM STOCK PILE, 28°C ISOLATING TUNNEL 4°C WATER SPRAY-SYSTEM 28°C 10°C RETURN WATER WATER COLLECTOR 8°C CONVEYOR BELT AGGREGATE TO BATCHING PLANT, 10°C 10°C FRESH-WATER 28°C COLLECTING BASIN MIXING BASIN PUMP 4°C 4°C SETTELING BASIN 10°C 12°C SEDIMENT SPRAYPUMP COLD WATER BASIN CHILLER UNIT PUMP AIR AIR AIR AIR 12°C 4°C NR Koeling BV

  20. Diagram showing the cooling effect against time and aggregate size. NR Koeling BV

  21. Wet-Belt Aggregate sprayed with cold water on a Belt NR Koeling BV

  22. Tocoma Dam Venezuela Wet-Belt Isolating Tunnel Water Spray on belt Width ofbelt 1600 mm; v = 0,35 m/s Sprayingwith 3° to 4° coldwater At a distanceof 20 m the lateral roller areleft out toallow Wet-Belt under construction NR Koeling BV

  23. Conveyor Wet-Belt Capacity of the WET-BELT for the Panama Canal project • Belt lenght : 220 m • Belt width 2 m • Belt capacity 800 Ton / hour • Belt speed 0,3 m/s • Coolingcapacityinstalled 5375 kW • Water flow 500 m3/h NR Koeling BV

  24. Aggregate Cooling Cold Water Inundation - Sedimentation into the Silo NR Koeling BV

  25. Aggregate hopper coolingby cold water in Silo 28°C 28°C 4°C 8°C 8°C 7°C NR Koeling BV

  26. NR Koeling BV

  27. Sedimentation System Free flow system water flow ~ 1000 m³/h Cleanwater Result Sludge

  28. Aggregate cooling by blowing cold air into storage silo NR Koeling BV

  29. Aggregate hopper cooling by cold air 28°C 28°C 9°C 4°C 9°C -2°C 4°C NR Koeling BV

  30. Diagram showing the cooling effect against the remaining time and aggregate size NR Koeling BV

  31. Aggregate cooling in Silo Aggregate cooling by cold air Sadi Said Marocco Air-blast unit NR Koeling BV

  32. Largeaggregatecooling system by cold air withseparatedstoragesilos, (Gibe III Ethiopia) NR Koeling BV

  33. Capacity: Aggregate: 700 Ton/Hr Temp. :29°C  9°C Refr.cap.: 4.100 kW Aggregate silo’s for air cooling Chilled water plant Large aggregatecooling system by cold air withseparated storage silos, (Gibe III Ethiopia) NR Koeling BV

  34. Howto cool the Sand by ROTATING SAND COOLER NR Koeling BV

  35. Sand Cooling 24°C SAND COOLER SAND FROM STOCKPILE, 28°C Rotating Drum Air: 2°C Supply conveyor COOLED SAND TO BATCHINGPLANT, 14°C Feeding conveyor 8°C Return AIR : 24°C Discharge conveyor Coolingcoil Supply AIR : 2°C 2°C 24°C Fan Air-Blast unit Sand filter -2°C 4°C Air Air Chiller unit PUMP Air Air -2°C 4°C Water/Glycol NR Koeling BV

  36. Sand Cooling Innerview Sand cooler rotating drum Sand cooler on job site Tocoma Dam Venezuela NR Koeling BV

  37. Sand coolingpanamachannelproject NR Koeling BV

  38. Sand Cooling Capacity of the Sandcoolerfor the Panama project • Number of sand coolers 2 pc • Sand capacity (each) 210 Ton / hour • Diameter of sand cooler 2500 mm • Length 11.000 mm • Cooling capacity installed 2x 775 kW NR Koeling BV

  39. Sand coolingSogamosoColombia NR Koeling BV

  40. Sand Cooling Rotating drums Sand Cooler NR Koeling BV

  41. Complete solution NR Koeling BV

  42. General Layout NR Koeling BV

  43. General Layout Inline silowithweighingsystem Aggregate storage Ice plant(for safety) Wet belt Mixing plant Sedimentation Cement and fly-ashstorage Chiller plant Sonla – Dam Vietnam

  44. NR Koeling BV

  45. Yewa – Dam Myanmar General layout Mixing plant Ice plant Sedimentation-tanks Material storage Sand Wet belts Materialstorage-aggregates Conveying belts Charginghopper

  46. NR Koeling BV

  47. Configuration of the ConcreteCooling Plant NR Koeling BV

  48. Selection Criteria • Concrete temperature at mixer outlet • Plant Layout • Energy consumption NR Koeling BV

  49. Concrete Temperature Achievable concrete temperatures NR Koeling BV

  50. Plant Combinations 8°C Concrete only achievable with Plant combination H and I NR Koeling BV

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