Alfa Laval Brazed Plate Heat Exchangers
Working principle of brazed plate heat exchangers
Brazed plate heat exchanger is a new type of high-efficiency heat exchanger made of a series of metal sheets with a certain corrugated shape stacked and brazed. Thin rectangular channels are formed between various plates to exchange heat through the plates. Brazed plate heat exchanger is an evolution of detachable heat exchanger. The sealing material is changed from rubber pad to copper or nickel. All the plates are combined by copper solder or nickel solder. All contact points of the brazed heat exchanger must also be completely welded together to ensure that the heat exchanger has the highest heat exchange efficiency, pressure resistance and service life.
The Specification of brazed plate heat exchangers
Preventing freezing of brazed heat exchangers
When the temperature of any heat exchanger is lower than zero degrees Celsius, the water in the heat exchanger may freeze.In order to prevent the heat exchanger from freezing due to low temperature, the air conditioning unit must be equipped with a drain valve.Please pay attention to let the water circulate and heat continuously when using, and drain the water when not in use. You can also add ethylene glycol to the water to prevent the water from freezing. In order to prevent the phenomenon of internal icing, please pay attention to whether the temperature of the inlet water in the evaporator is too low, the water flow rate is too small or the water is cut off. Insufficient refrigerant flushing will also cause the evaporation temperature to be too low and freeze the evaporator.
Installation of brazed plate heat exchanger
Before installing the brazed plate heat exchanger, heat insulation materials should be used to do heat insulation treatment to eliminate condensate. When installing the heat exchanger, you cannot use the connecting pipe to support and fix it. You must place the heat exchanger on the stand and tighten it with a metal clamp or pull rod.