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VAPOUR PRESSURE AND HUMIDITY CALCULATIONS - Coggle Diagram
VAPOUR PRESSURE AND HUMIDITY CALCULATIONS
EVAPORATION
CONDENSATION
DYNAMIC EQUILIBRIUM
RATE OF VAPORIZATION = RATE OF CONDENSATION
VAPOUR PRESSURE OF LIQUIDS
P.P OF VAPOUR = V.P OF THE LIQUID
BOILING POINT
CLAPEYRON EQUATION
\(\frac{dP^{S}}{dT}=\frac{\lambda}{T\Delta V}\)
CLAUSIUS-CLAPEYRON EQUATION
\(\frac{d\ln P^{S}}{dT}=\frac{\lambda}{RT^{2}}\)
\(\ln(\frac{P^{S}_2}{P^{S}_1})=\frac{\lambda}{R}(\frac{1}{T_1}-\frac{1}{T_2})\)
SATURATION PRESSURE (\(P^{S}\))
ANTOINE EQUATION
\(\ln P^{S}=A-\frac{B}{T-C}\)
SOLUTIONS
SOLUTE
SOLVENT
RAOULT`S LAW
\(p_A=y_A.P=p^{o}_A.x_A\)
\(x_A \longrightarrow 1\)
HENRY`S LAW
\(p_A=y_A.P=x_A.H_A\)
\(x_A\longrightarrow 0\)
TOTAL VAPOUR PRESSURE
\(p^{o}_A+p^{o}_B\)
HUMIDIFICATION
DEHUMIDIFICATION
DRY BULD TEMPERATURE
WET BULB TEMPERATURE
DEW POINT TEMPERATURE
ABSOLUTE HUMIDITY
\(H=\frac{\text{kg vapor}}{\text{kg dry gas}}\)
ABSOLUTE SATURATION
MOLAL HUMIDITY
\(H_m=\frac{\text{kmol vapor}}{\text{kmol dry gas}}\)
MOLAL SATURATION
\(H_m=[\frac{p_A}{(P-p_A)}]\)
RELATIVE HUMIDITY
\(\text{% RH} = (\frac{p_A}{p_B})*100\)
SATURATION HUMIDITY
\(H_S=[\frac{p_S}{(P-p_S)}](\frac{M_A}{M_B})\)
PERCENT HUMIDITY
PERCENT SATURATION
\(\text{%H}=\frac{H}{H_S}*100\)
\(\text{%H}=\frac{H_m}{H_ms}*100\)
HUMID HEAT
\(C_S = 1.006 + 1.84H \hspace{0.2cm} \frac{kJ}{\text{kg dry air .K}}\)
HUMID VOLUME
\(V_H=\frac{RT}{(p_A.M_A)}\)
\(V_H=[(\frac{H}{M_A})+(\frac{1}{M_B})]*22.416*[\frac{DB}{273}]*[\frac{101.325}{P}]\)
PYSCHOMETRIC CHART