I just wondered if there are any air-conditioners that can also
control the humidity levels as well as the temperature?
And what level of humidity would you say is personally right for you?
ASHRAE has done a lot of research in the regards to temperature,
humidity, and comfort. Typically, you have to calculate the "Operative
Temperature" which takes into account the heat effects of both
convection and radiation. Then you have to take into account of what
the room will be used for (i.e. exercise room vs sedentary activity).
This data was collected from an uncondioned school room in Southern
CA. The study included unconditioned spaces in over 30 schools and
over 180 spaces. (I have a years worth of this data.) The survey
allowed the district to prioritze the order for conditioning the
I wrote the software to collect and graph the data. It was a fun job.
I've always wanted to turn this into an 'active' controls function,
based on the premise that - In a conditioned space, if you are not
riding on the left or right edge of the 'Comfort Zone', you are
supplying too much energy. This could take advantage of
dehumidifiers/humidifiers as well as temperature controls.
Here's another link showing the Heat Index:
Many industrial applications require a narrow range of humidity control
reflecting the processes used: computer rooms, laboratories, manufacturers,
etc. these require humidity to be controlled irrespective to and separate
from thermal requirements. So in these cases the answer is YES they do "add"
humidity during cooling.
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