NATURAL VENTILATION SYSTEM The Complete Solution - Gilberts ...

Heat output against temperature differenceWater flowrate against water temperature rise (cooling)100.3590.38Heat output (kW)76543per m2coil faceWater flowrate (litres/s)0.250.20.150.12˚C4˚C6˚C8˚C20.0510Mean water - outside air temperature (°C)00 0.5 1 1.5 2 2.5 3Duty (kW)1.4Cooling output against temperature difference70Water pressure drop against flowrate (heating)60Cooling output (kW)1.210.80.60.4per m2coil faceWater pressure drop (kPa)50400.3020100.2000.1 0.2 0.3 0.4 0.5 0.6Water flowrate (litres/s)0Water pressure drop against flowrate (cooling)Outside air - mean water temperature (°C)40Water flowrate against temperature drop (heating)35Water flowrate (litres/s)0.50.450.40.350.30.250.20.150.15˚C10˚C15˚C20˚C25˚CWater pressure drop (kPa)3025201510500 0.05 0.1 0.15 0.2 0.25 0.3 0.35Water flowrate (litres/s)0.05001 2 3 45 6 7 8 9 10 11 12Duty (kW)2.001.80Coil airside pressure drop1.60pressure drop (Pa)1.401.201.000.800.60Htg CoilHtg/Clg coil0.400.200.000 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5Face velocity (m/s)19