4500 m³/hr of air at 45 °C DBT and 10% RH enters an evaporative air cooler. The air leaves the air cooler at 80% RH. Find, (1) Minimum water temperature at the basin of the air cooler. (2) The moisture rate added to the air. (3) The sensible and latent heat exchange. (4) The effectiveness of the air cooler.

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