Quick facts How to use Eurovent Guidelines 4/11
Details about Eurovent 4/11
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How to calculate the average Dp? 1) Find the average pressure drop a) Find the EN779:2012 report b) Find the pressure drop as a function of dust feed curve c) Estimate the average pressure drop at the defined amount of dust G4
350g
M5-M6
250g
F7-F9
100g
Note: The data is from �standard� use in an air handling unit with 6000 hours per year. E.g. an Opakfil has a dust loading capacity of around 100g and should not be used up to 400g as indicated in the test reports.
d) For fine filters a straight line can be used as an approximation of the pressure drop up to 100 g. The average pressure drop is therefore: Dp = A+(B-A)/2 2) Calculate the energy consuption Using the average pressure drop the energy consumption can be calculated using the following formula:
3) Calculate the Energy Efficiency Classification Using the filter class and the energy consumption the Energy Efficiency Classification can now be found
Where: qv=air flow=3400 m3/h=0,944 m3/s p=average pressure drop in Pa t=time in hours=6000 n=fan efficiency=0,5 (according to Eurovent) w ww.camf ilfar r.c om
CA M F I L FA RR | H OW TO U S E E U ROV E N T GU I DE L I N E S 4 /1 1 / 1