Heat pump evaporator with forced circulation and external shell and tube heat exchanger.
Designed to produce the best distillate quality with minimum capital and operating costs.
E series evaporators have to be connected to an electric power supply and to have highly available cooling air, like all heat pump equipment. Each model in the E series is a compact module that can be handled and connected to the utilities simply and easily, by means of standard connections. All the models of the E series are controlled by a PLC that controls the functioning of the evaporator, including water-to-be-treated feeding and evaporation products discharge. All models have a wide range of sensors that enable the PLC to manage the evaporator automatically, even in a critical situation. This assures long life for the components and very high quality products (distillate and concentrate). All models are designed to function continuously, 24/7, with minimum supervision. E series evaporators operate in high vacuum conditions to recover a large part of the thermal energy produced by the heat pump. The pressure in the boiling chamber is set at 5-6 kPa (absolute), so that the boiling temperature of the water is around 35°C, much lower than that at atmospheric pressure.
Under these conditions the phenomena that may reduce performance are either prevented or slowed down. Such phenomena are:
- evaporation of undesired substances.
The forced circulation circuit plus the shell and tube heat exchanger differentiate EVALED™ PC E series evaporators from other products on the market.