Question

(a) Explai in, using reference to appropriate gas laws why it is possible to treat water and air at atmospheric pressures and temperatures as a mixture of perfect gases. (6 marks) ( Explain the difference between the terms relative humidity and specific (6 marks) (c) An air conditioning unit is to supply air at 20°C, 1 bar, and relative humidity as means of quantifying the amount of water in air humidity 50% to a lecture theatre. Ambient conditions are 30°C, 1 bar, on and relative humidity 75%. Calculate, (C) the dew point temperature of ambient air. (3 marks) (i) the amount of moisture that must be removed from an air flow of 100,000 m3/hr measured at ambient conditions. (10 marks)

Answer 1

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Ansient onditions ae condit7.mt- Cer Aげ s-rp -1 Pa= Pre ssure of dry air. s Satyra resse a T r's Nous ero Faint ?s q te-par 나te.ch wahr StRAJ- to ん) 后 ユ 96.8182.

O-2-27 x 303 fs 2-D 6-622-Y 1-168S

Lu, emio んと-