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+--- Thread: Dew Point (/showthread.php?tid=1990)
Dew Point - Allesreinwasgeht - 26.03.2019
Hi There,
this will be my first post.
I cant find a solution for a dew point calculation by using homelync.
my system is collecting inside and outside humidity plus inside and outside temp. all in 0-255 coming from an analog input. so dont bother about units.
1/15/1 Hum.i (0-255)
1/15/2 Temp.i (0-255)
1/15/11 Hum.o (0-255)
1/15/12 Temp.o (0-255)
the aim is to start vents in case of a good result (max drying) only. the trigger is the dewpoint of air coming from outside.
1/3/1 Vent.start (1Bit)
maybe there is a workaround.
best
(as you can see, my native language is german
RE: Dew Point - admin - 26.03.2019
Dew point calculation:
Code:
hum = 60 -- 0..100% range
temp = 10 -- temperature in deg C
dew = ((hum / 100) ^ (1 / 8)) * (112 + (0.9 * temp)) + 0.1 * temp - 112
log(dew)RE: Dew Point - Allesreinwasgeht - 26.03.2019
(26.03.2019, 10:33)admin Wrote: Dew point calculation:
Code:hum = 60 -- 0..100% range
temp = 10 -- temperature in deg C
dew = ((hum / 100) ^ (1 / 8)) * (112 + (0.9 * temp)) + 0.1 * temp - 112
log(dew)
Thanx.
whats the log(dew) for?
best
RE: Dew Point - admin - 26.03.2019
This way you can see variable contents in Logs tab: http://openrb.com/docs/lua.htm#log
RE: Dew Point - Allesreinwasgeht - 26.03.2019
(26.03.2019, 14:35)admin Wrote: This way you can see variable contents in Logs tab: http://openrb.com/docs/lua.htm#log
THX