A psychrometic chart, constructed for a pressure of 100 kPa, has an overall scale factor S of 1800 kJkgí1 . The constant dry-bulb temperature line at 60°C is drawn vertically in the chart. Calculate...

A psychrometic chart, constructed for a pressure of 100 kPa, has an overall scale factor S of 1800 kJkgí1 . The constant dry-bulb temperature line at 60°C is drawn vertically in the chart. Calculate the angles of (i) the enthalpy-humidity ratio protractor for ǻh/ǻȦ (kJkgí1 )- values of 4000 and 1400, and (ii) the SHR-protractor for the SHR-values of 0.4 and í1.2.