I'd have to guess you live in an area that isn't very humid. Otherwise
you wouldn't have to ask. :-)
First, the books on the bookcases in the livingroom stop growing mold on
their spines if you drop the humidity. (Otherwise, here in the Ottawa
River Valley, they sure do, just sitting there during the summer.)
Second, you stop feeling constantly sticky.
Third, if you're hot (like, you exercise or something) instead of just
getting soaked with sweat which refuses to evaporate, you actually cool
off a bit.
An aside: Many years ago, back in college, I repainted apartments as a
summer job. With the air conditioner running, the paint wouldn't dry
(or wouldn't dry before we left, anyway). To get it to dry fast enough
to allow us to do touchups and whatnot before we left, we consistently
had to shut the AC off. (So much for an AC drying things out.) Which
leads to our next point:
Used in conjunction with a conventional airconditioner a dehumidifier
can make things "feel" much more pleasant. Make no mistake --
conventional air conditioners reduce the *absolute* humidity
substantially but their impact on the *relative* humidity (which is what
makes everything feel sticky) is considerably smaller, as they reduce
the temperature of the air at the same time they remove moisture from
it. Their impact on the *relative* humidity is only as large as the
difference between the internal temperature of the air (as it comes off
the evaporator coils) and the final temperature of the air in the room
(after it mixes with uncooled air).
Some air conditioners may not cool the air significantly below the
target temperature, in which case the relative humidity may actually be
raised as a result of their operation.
Dehumidifiers, OTOH, are designed to have a large temperature drop at
the evaporator before the air is warmed again by the condenser, and they
always reduce the relative humidity.
On 07/24/2016 01:59 PM, David Jonsson wrote:
Hi
How does dehumidifiers like this one work?
http://www.conrad.com/ce/en/product/1377991/Dehumidifier-20-m-0011-lh-White-Blue-renkforce-HD-68W
I assume that my personal experience of room temperature will decrease
if I run one (provided I have sufficiently high humidity). But I also
realize that the temperature of the air rises after being
dehumidified. What is the net subjective human effect?
David
