How to Install a Brazed Plate Heat Exchanger

With the wide application of heat exchange, the use of heat exchange in our life is everywhere. In some special cases, when the workers who install the heat exchanger can't come to us, can we install it ourselves? Below we will introduce the installation process of the brazed plate heat exchanger. Hopefully, this will give you some insight into this type of heat exchanger.

Here is the content list:

• Installation

• Brazing connection

• Preventing Ice Formation

• Avoid the water hammer phenomenon

• Water quality treatment

Installation

Before installing the brazed plate heat exchanger should be well insulated with insulation material to eliminate condensation. The heat exchanger must not be supported by connecting piping during installation. The heat exchanger must be placed on a stand and fastened with metal cleats or tie rods.

Brazing connection

A wet cloth is wrapped around the root of the brazed plate heat exchanger stub to protect the heat exchanger. When brazing the connection, the special silver content of 45% or more of the welding rod must be used, and the flame must be weak so that the solder can be evenly fused into the stainless steel, while the heat exchanger connection head only needs to be heated to the minimum temperature required for brazing, brazing should be quickly cooled after. Note that the entire brazing and cooling process must be carried out under the protection of nitrogen, cooling can not be immersed in water to cool the parts, and a wet cloth can be used to wipe the parts to accelerate cooling.

Preventing Ice Formation

Any brazed plate heat exchanger has the potential for water to freeze in the heat exchanger when the temperature is below zero degrees Celsius. To prevent freezing of the heat exchanger due to low temperatures, the air conditioning unit must be equipped with a valve for drainage. Take care to keep the water circulating for heating when in use, and drain the water when not in use. Alternatively, add glycol to the water to prevent the water from freezing. To prevent the phenomenon of internal icing, please pay attention to whether the inlet water temperature inside the evaporator is too low, the water flow is too small or broken (blocked piping), and the refrigerant flush filling is insufficient to cause the evaporation temperature to be too low to prevent the evaporator water side from icing.

Avoid the water hammer phenomenon

The water hammer phenomenon is due to the incompressible fluid flow in the pipeline suddenly changing the flow rate of the phenomenon, usually in the sudden closure of the solenoid valve when the water hammer phenomenon. The water hammer phenomenon may rupture the pipeline, and damage the valve and heat exchanger. This phenomenon can be avoided by delaying the time to open or close the valve. This will extend the life of the brazed plate heat exchanger.

Water quality treatment

Due to the differences in water quality and the application of brazed plate heat exchangers in different places. In the process of daily maintenance, it is necessary to pay attention to the treatment of water quality problems and consult water treatment experts to determine the suitability of water quality if necessary.

If you have a need for a heat exchanger, you can pay attention to Shanghai Jiangxing Chemical Equipment Co.Led. The company has been dedicated to the research of plate heat exchangers for decades and can surely meet all your needs.