Design Calculations
Saturation pressure as a function of temperature: Ref: ASHRAE, input T in [K], output pSAT in [kPa]
c1 = -5800.22, c2 = -5.51626, c3 = -0.0486402, c4 = 4.17648E-5, c5 = -1.44521E-8, c6 = 6.54597pSAT = e[c1 / T + c2 + c3 * T + c4 * T2 + c5 * T3 + c6 * Log(T)]
The dew point temperature based on TDEW = [Log(Pv / 610.78) * 241.88] / [17.558 - Log(Pv / 610.78)] where Pv in [Pa] is the vapour pressure of water in air.
Field variables: | Unit | Stream-1 | Stream-2 |
Volume flow rate - moist air: | [m3/hr] | ||
Relative Humidity: | [%] | ||
Dry Bulb Temperature: | [°C] | ||
Saturation pressure: | [Pa] | ||
Vapour pressure: | [Pa] | ||
Humidity ratio: | [g-vap/g-d.a.] | ||
Specific enthalpy: | [J/kg-d.a.] | ||
Mass flow rate - dry air: | [kg-d.a./s] | ||
Mass flow rate - vapour: | [kg-vap/s] | ||
Air (moist) properties after mixing | |||
Mass flow rate (moist air): | [kg/s] | ||
Specific enthalpy: | [J/kg-m.a.] | ||
Humidity ratio: | [J/kg-d.a.] | ||
Dry-bulb temperature: | [°C] | ||
Relative humidity: | [%] |
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