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For a sample of air having $22^0C$ DBT, Relative humidity 30% at barometric pressure of 760mm of Hg. Calculate i) Vapour pressure ii) Vapour density iii) Humidity ratio iv) Enthalpy.
written 7.9 years ago by gravatar for ajinkyabhausahebjadhav ajinkyabhausahebjadhav • 80 modified 4.0 years ago by gravatar for sagarkolekar sagarkolekar ★ 11k
refrigeration and air conditioning
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written 4.0 years ago by gravatar for Sharad Sharad • 160

Given: $t_{d}=22^{\circ} \mathrm{C}, p_{b}=760 \mathrm{~mm}$ of $\mathrm{Hg}=0.755 \mathrm{mof} \mathrm{Hg}, R H=30 \%$, $$ p_{b}=\rho g h=13.6 \times 1000 \times 9.81 \times 0.760=101.4 \mathrm{kPa} $$ i) Vapour pressure: Finding the partial pressure of saturated air at same DBT: $$ \begin{array}{c} p_{v s}=p_{s a t}=0.02642 \text { bar }(\text { from steam …

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