Although poor air quality is a perennial problem, it gets intensified during the winter months in Delhi-NCR. Explain. Evaluate the efficacy of existing measures to control air pollution.

Linked PYQ

In an air-conditioning plant, an air handling unit supplies a total of 4000 m/min of dry air which comprises by mass 20% of fresh air at 39°C DBT and 26°C WIT and 80% re-Circulated air at 24°C DBT and 50 RII. The air leav19 the Cooling coil at 12°C saturated: Using Psychometric chart calculate (i) Total cooling load and (ii) Room heat gain. Also slicow the process on Psychometric chart.