Know how
ENERGY EFFICIENCY
Total cost calculation:
The whole operating expenses of an air conditioning system consist to a large part of energy expenses for the heating and motor drive plus maintenance costs. The expenses for filters are proportionately very low.
A practical example of a hotel in Vienna – Austria is shown in the diagramme. This shows the calculation for a hotel with three air handling units, each operating with 24,000 m ³/ hour, recirculation air 20%, heat recovery with 50% efficiency. The filter expenses (filter plus additional costs to waste disposal) are only 3% of the total costs.
But the filter quality can have a very big effect also on the other cost shares. In this example out of the optimisation by filtex resulted total cost savings of 2,800€/year.
Total cost shares:
- Energy costs for heating
- Electrical Energy costs for motor drive
- Maintainance costs (Serviceing, check ups, cleaning...)
- Filter (Filter costs, purchasing, stock keeping, filter change, waste..)
Energy efficiency:
The higher the pressure drop of filters, damper register etc., the higher is the required electric energy for the engine / ventilating fan driving. The overall pressure drop is the sum of the pressure drops of the channel system, heat exchanger, heat recovery, ventilation flaps, sound absorber, other parts and finally the air filters. With increasing pollution in particular the pressure drop of the filters rises (however, also heat exchanger and heat recovery).
Empirical formula ((V [m³/h] x dP [Pa]) / (3600 x 1000 x N)) xT [h] x P [€/kWh]
Example: Pocket filter with 3.400m³/h per filter and common life time... from this follows energy expenses on pressure drop of 1-1,8 €/Pa.
Energy efficient filters:
The pocket filters of the product line “durotex” show the highest energy efficiency. The diagramme shows the clear difference to customary filters.
By substitution with energy-efficient "durotex" pocket filters you can save 20,- € to 36,- € per each single filter.
This expands the life time and reduces the operating expenses significantly.
It is also a valuable contribution to the environment protection - so the “durotex” filters are recommended for ecological profit certificated companies.
As a final pre filter before a HEPA filter, we recommend compact fiters product line "ripac". This provides improved filtration efficiency and high energy efficiency at the same time. CLEAN ROOM
filtex® offers filters with high energy efficiency for every product group (pocket filters, filter cells, HEPA filters, etc.)
Choose filters with the highest energy efficiency.
Our specialists will advise you.
