Torres de Refrigeración EWK
Water and air are brought in close contact, for which a
fan sucks in air in counter-flow to the water, as a consequence
of which part of the water evaporates.
The necessary heat for this, approx.597 Kcal. For every litre
of water, is taken from the circuit itself thus producing its
cooling. In addition to this, the temperature drop between the
hot water and the external air temperature is also used for
the cooling. The efficiency of a cooling tower depends mainly
on the heat exchange surface that has been assembled, on the
good distribution of the water, on the amount of intake air
and on the external air conditions. The theoretical limit of
cooling is the temperature in the wet bulb. This temperature
can be determined on the Molier i-x diagram if the air temperature
and relative humidity are known. The difference between the
required cold water temperature and the wet bulb temperature
(called cooling limit distance), is significant to determine
the size of the tower. The bigger the cooling distance is, the
smaller the tower becomes and therefore the more economical.
The limit distance must be of at least 3-4º C.
La diferencia entre la temperatura de agua fría deseada y la
temperatura del termómetro húmedo (llamada distancia límite
de enfriamiento), es significativa para el tamaño de la torre.
Cuanto mayor sea dicha distancia límite de enfriamiento, más
pequeña se hace la torre y, por consiguiente, más económica.
La distancia límite debe ser, como mínimo, de 3-4º C. a
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