I took out my 14,000 BTU Kenmore window AC unit and cleaned it. When I
put it back in it moved air better than before and the cooling was fine.
BUT......when the compressor cycles off and the air is being recyled the
humidity rises very fast. Much faster than before. I closed the outside
vent. I am pretty sure it was closed before the cleaning.
How are you measuring humidity?
A lower duty cycle will raise humidity. Too much cooling capacity for the
room means the temperature is lowered before the humidity is condensed out.
You get cool clammy air instead of cool dry air. This is why a lot of
buildings feel "cold", because excess humidity makes the usual comfort
temperature feel too warm, so you lower the temperature to compensate, and
wind up with a "clammy" feel.
I'm using the same hydrometer I have had for the past few years to measure
humidity. The unit has increased it's efficiency since being cleaned
though. (slightly greater airflow) I also use a 14" floor fan to circulate
air to the back of the house the same way I always have. Outside temps and
humidity have remained more or less constant.
A hydrometer measures liquid density, not humidity.
You want a wet-bulb/dry-bulb sling psychrometer. Anything else inexpensive
is inaccurate and unreliable, especially the department store wall-hangers
Then you need a properly sized AC. It is not possible for an AC to add
humidity, but it is very possible for it to not remove enough for comfort.
In very humid weather the difference is more pronounced. No knowing the
present conditions you have of outside temperature, outside humidity, area
you are trying to cook construction and insulation, no one can give a
definitive answer on the proper sized unit. At 14,000 Btu, you can do a
typical entire floor of an average size home. If, however, it is 76 degrees
outside, very humid, and you want to cook down to 72 degrees, you will
probably be left felling damp.
Where do you find as a good place to buy one?
Edmund Scientific used to sell them, but no more.
PS: maybe you could just go to hardware store, buy two
cheap thermometers, attach what?, wadded piece of
paper towell, to bulb of one, glue them together
back to back, securely tie some chalk-line to
the top of it (them) -- and (maybe) you have one?
Problem: where to get that nifty chart for figuring
out the humidity, given the temp and the temp-diff?
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