Stretch wrote:

Nick

Hiya Stretch,

define your terms!

OK.

What is coolth?

Btu/h of cooling.

What is xrho? Or is that x rho?

x means times, Rho is a density.

Please put spaces around your =, +, /, * (operators)

You might consider mentally adding such spaces as you require.

...I use grains, you use decimal fractions, eg 0.012 vs 84 grains.

w = 0.012 is a humidity ratio, eg pounds of water per pound of dry air.

If it's 90 F outdoors with w = 0.012 and 80 F with w = 0.012 indoors
and we move 400x60xRho = 2400Rho pounds per hour of air into a room
with 0.24 Btu/lb of specific heat and 2400Rhox0.24(80-T) = 12K Btu/h and
Rho = 39.38/(460+T) lb/ft^3, T = 53.9 F, with HVAC business as usual.

...I would not recomment using a "mister"... here in South Carolina.

I might, in conjuction with a low-flow AC that mainly dehumidifies.
You might think of this as an alternative to variable air volume, or
"dynamic balancing," with less blower power and duct and house heat
losses. Why cool a room if nobody's in it?

If we move C cfm of 40 F saturated air with ws = 0.005216 into a room
and mist a pound to wr = 0.012, that makes 1000(wr-ws) = 6.78 Btu of
coolth. Raising a pound makes 0.24(80-40) = 9.6 Btu. The total is 16.38,
and 40 F air weighs 0.07876 lb/ft^3, so 60Cx0.07876x16.38 = 12K Btu/h
makes C = 155 vs 400 cfm, with smaller ducts or (400/155)^3 = 17 times
less blower power...

Nick