HEAT EXCHANGE IN EVAPORATORS SYSTEM | Alaquainc
Evaporator systems are the heart of many industries. And its efficiency depends upon the efficiency of its heat exchange process. For the good working of the evaporator, it has a heat exchanger. What it is?
The heat exchanger is equipment in the evaporator system used for perfect heat exchange between two separated medium. Whether the two media are separated by a plate or tube. They are greatly used in evaporation plants, wastewater plants, chemical plants, food industry, etc. One common use of the heat exchanger is in a car radiator. Let’s see how the heat exchange process happens in the evaporator system:
Plate evaporator– A plate evaporator has a heat exchanger in which heat exchange occurs through metal plates placed between two mediums. Plate evaporator is much efficient over the conventional way of evaporation by providing greater surface area for heat exchange. Greatly effect heat exchange.
Film evaporator– evaporation occurs in the tubes and sometimes outside the vertical or horizontal tubes. The fluid will make a film along the walls of the tube, progressing upwards or downwards. In film evaporators, the efficiency of heat exchange is determined by liquid properties (viscosity), film layer thickness, and the difference in temperature across the layer of film. Thin-film evaporator aid inefficient heat exchange. The advantage of having a horizontal film evaporator heat exchanger is it provides a high heat exchange coefficient and thus compact structure.
This process of heat exchange in the film evaporator system is the same in falling film, rising film, vertical tubes or horizontal tube evaporators.
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