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Figure 3 APARTMENT MVHR OPERATIONAL SCHEMATIC

MVHR (MECHANICAL VENTILATION WITH HEAT RECOVERY) PROVIDES FRESH FILTERED AIR INTO A

BUILDING WHILST RETAINING MOST OF THE ENERGY THAT HAS ALREADY BEEN USED IN HEATING

THE BUILDING. HEAT RECOVERY VENTILATION IS THE SOLUTION TO THE VENTILATION NEEDS OF

ENERGY EFFICIENT BUILDINGS. MECHANICAL VENTILATION WITH HEAT RECOVERY (MVHR), HEAT

RECOVERY VENTILATION (HRV) OR COMFORT VENTILATION ARE ALL NAMES FOR THE SAME

THING. A HEAT RECOVERY VENTILATION SYSTEM PROPERLY FITTED INTO A HOUSE PROVIDES A

CONSTANT SUPPLY OF FRESH FILTERED AIR, MAINTAINING THE AIR QUALITY WHILST BEING

PRACTICALLY IMPERCEPTIBLE.

MVHR WORKS QUITE SIMPLY BY EXTRACTING THE AIR FROM THE POLLUTED SOURCES E.G. KITCHEN,

BATHROOM, TOILETS AND UTILITY ROOMS AND SUPPLYING AIR TO THE 'LIVING' ROOMS E.G.

BEDROOMS, LIVING ROOMS, STUDIES ETC. THE EXTRACTED AIR IS TAKEN THROUGH A CENTRAL

HEAT EXCHANGER AND THE HEAT RECOVERED INTO THE SUPPLY AIR. THIS WORKS BOTH WAYS, IF

THE AIR TEMPERATURE INSIDE THE BUILDING IS COLDER THAN THE OUTSIDE AIR TEMPERATURE

THEN THE COOLING IS MAINTAINED IN THE BUILDING.

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