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<p>and <a href="page.php?w=HVAC">HVAC</a> systems for cooling buildings. The classification is based on the type of air induction into the tower: the main types of cooling towers are <a href="page.php?w=Natural_convection">natural draft</a> and <a href="page.php?w=Forced_convection">induced draft</a> cooling towers.</p>

<p>Cooling towers vary in size from small roof-top units to very large <a href="page.php?w=hyperboloid_structure">hyperboloid structure</a>s that can be up to 200 m tall and 100 m in diameter, or rectangular structures that can</p><p>
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