2 Mr. and Mrs. Moodley plan to install air conditioning in the open plan section of their home.
i.e. This includes the entrance, living room, dining room and kitchen. The air conditioning
expert recommended and specified an aircon unit that has an ACH value of 554 m3 / h.
Air Changes per Hour (ACH) tells you that the unit expels (output) 554 cubic meters of
air from the rooms in one hour. Normal domestic air conditioners typically have a value
between 2 and 8 times an hour. How many times an hour will this device change the air in
the open plan section in one hour. To apply this data to the open plan section, follow the
point form instructions from i. through to iii.:
i. Calculate the volume of the open plan section
i. Measure the length, width, and height of each room in the open plan section (entrance, living room, dining room, kitchen).
ii. Calculate the volume of each room by multiplying the length by the width by the height.
iii. Add all the volumes of the rooms together to get the total volume of the open plan section.
Once you have the total volume of the open plan section, you can then calculate how many times the air conditioning unit will change the air in that section in one hour based on the ACH value of 554 m3 / h.