Im trying to cool a room only to keep the well water tanks from condensing and rotting out again. Is there an equation in T3000 software to calculate dewpoint from dry bulb and RH and then keep the room below 60 degrees dewpoint? Thats about where the tanks start to get wet. Right now if the room AC is set to 75 and the humidity stays fair but I wonder if there is a better or more efficient way to do it?
The HUM series sensors have dewpoint and enthalpy features built in, we should add it to T3000 too. We will also work up a control basic program to do the same thing. Lijun will report back shortly.
Our Airlab series products already have WGBT function, HUM will be available soon, and dew point and enthalpy are already available. Use a T3 controller to connect these sensors and you can program them to achieve the desired function.
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Lijun, we are talking about the math used to get enthalpy and dewpoint. You have done the routines in the HUM, now we need to do something similar in control basic, if the forumula is not too compicated please show an example here.
And for extra points, build some new commands in the control basic. Get with the team and add these two new commands:
VAR1 = ENTAHLPY( TEMP , HUM)
VAR2 = DEWPOINT( TEMP , HUM )
You can refer to the following two codes, which are DEWPOINT and ENTHALPY respectively.
DewPoint
10 REM USE YOUR TEMPERATURE "T" IN DEGREE C
20 REM USE YOUR HUMIDITY "RH"
30 A = 17.27
40 B = 237.7
50 C = A * T
60 D = B + T
70 E = C / D
80 F = 0.1 * RH
90 G = F / 100
100 H = E + G
110 I = B * H
120 J = A - H
130 DEWPOINT = I / J
Enthalpy:
10 REM USE YOUR TEMPERATURE "T" IN DEGREE C
20 REM USE YOUR HUMIDITY "RH"
30 A = 1.006 * T
40 B = 0.622 * RH
50 C = B / 100
60 D = 2501 + 1.84 * T
70 E = C * D
80 H = A + E
90 REM ENTHALPY "H IN kJ/kg"