HVAC engineers

Cooling towers are one of those systems everyone "knows", until performance drops and nobody can clearly explain why. In reality, a cooling tower is not just a heat rejection device. It's a thermodynamic interface between water, air, and ambient conditions - and its performance defines the entire chiller plant efficiency. WORKING PRINCIPLE (What actually happens) A cooling tower removes heat through evaporative cooling: Warm condenser water is distributed over fill media Air is drawn or forced through the tower A small portion of water evaporates That evaporation removes heat from the remaining water Cooled water returns to the condenser Key point from the field: The tower doesn't cool water to ambient temperature, it cools toward wet-bulb temperature, which is the real performance limit. MAIN TYPES OF COOLING TOWERS Induced Draft (most common) Fan at the top pulls air →better efficiency, stable airflow Forced Draft Fan at air inlet →easier maintenance, but more recir...