Working principle and advantages of volumetric heat exchanger

In our daily life, in the engineering projects of hospitals and hotels, in order to provide good domestic hot water, there will be the phenomenon of selecting and designing positive displacement heat exchangers. Then, let's take a look at the working principle and advantages of positive displacement heat exchanger.

I. What is a positive displacement heat exchanger?

Volumetric heat exchanger is a heat exchanger that exchanges heat by alternately flowing cold and hot fluids through the surface of heat accumulator (filler). Wall-to-wall volumetric heat exchanger separates cold and hot fluids, and performs heat exchange between walls. Therefore, it is also called surface heat exchanger.

Volumetric heat exchanger is formed by increasing the volume on the basis of the usual float heat exchanger. It consists of a main body, a steam coil device in the main body, a steam inlet and outlet, a cold water inlet and outlet, and a hot water outlet. It is characterized in that the inner surface of the main body is coated with a high-temperature molten anticorrosive alloy layer, which is mainly used for hot water supply systems.

Volumetric heat exchanger is a pressure vessel, which can bear pressure according to actual use. According to the form of heat exchange tubes, volumetric heat exchangers can be divided into floating coil heat exchangers and U-tube heat exchangers; According to the appearance of products, volumetric heat exchangers are divided into vertical volumetric heat exchangers and horizontal volumetric heat exchangers.

II. Working principle of positive displacement heat exchanger:

A device in which a high-temperature medium (water or steam) and another low-temperature medium (water) transfer heat through the wall of a heat transfer tube, and the low-temperature medium is heated to a specified temperature. Cold water enters the equipment barrel from the bottom of the equipment, becomes domestic hot water after heating, and flows out through the outlet at the top of the equipment.

3. What are the advantages of positive displacement heat exchanger?

1. The positive displacement heat exchanger has the functions of heat exchange and heat storage. The heat storage capacity is large, which can be heated in advance, and the hot water can be stored in the heat exchanger. With the increase of heating time, the heat consumption of heating medium time can reduce the peak value.

2. Volumetric heat exchanger is suitable for real estate with large and uneven consumption of hot water, such as domestic water in hotels.

3. The resistance loss of hot water through the water tank is small.

4. Simple structure, convenient management, ability to bear water pressure and low noise.

5. Large heat exchange area and high heat exchange rate.

6. Water pressure and water temperature are stable, safe, water-saving, comfortable and long-lived.

IV. Application scope of positive displacement heat exchanger: Because of its own advantages, positive displacement heat exchanger is widely used in hot water system, and is widely used in hotels, hospitals, universities and other projects.

The above is the working principle and advantages of positive displacement heat exchanger. For more information, please feel free to contact us! Our company has many years of experience, and we are always looking forward to your joining.