Shandong Zhilin Environmental Protection Technology Co., Ltd.

The powerful advantages of plate heat exchangers

Release time:

2021-04-14 17:13

Source:

The characteristics of plate heat exchangers are obvious compared to other heat exchangers: plate heat exchangers have a high heat transfer coefficient, small footprint, compact structure, and are easy to maintain.

The advantages of plate heat exchangers compared to other heat exchangers are obvious: plate heat exchangers have a high heat transfer coefficient, small footprint, compact structure, and easy maintenance. Under the condition of equal heat transfer, the space occupied is only 1/2 to 1/3 of that of a shell and tube heat exchanger. And unlike shell and tube heat exchangers, which require a large space to pull out the tube bundle for maintenance, plate heat exchangers only need to loosen the clamping screws to 100% access the surface of the heat transfer plate within the original space, making disassembly and cleaning convenient. They are small, lightweight, and easy to install in confined spaces. Through the above analysis and comparison, it can be seen that plate heat exchangers have many advantages over shell and tube heat exchangers.

In addition, plate heat exchangers have the following advantages:

(1) Small temperature difference

Due to the high heat transfer coefficient and strong turbulence of the plate heat exchanger, after heat exchange in the heat exchanger, the temperature difference between the primary and secondary hot water in the heat exchanger can be very small, sometimes approaching 1℃～3℃. This can greatly increase the thermal efficiency and improve the economic efficiency of the heat exchange equipment.

(2) Small heat loss

Because the plate edges and peripheral seals are exposed to the atmosphere, the heat loss is extremely small, generally about 1%, and no insulation measures are needed. Under the same heat exchange area, the heat exchange loss of a plate heat exchanger is only 1/5 of that of a shell and tube heat exchanger, while the weight is less than half that of a shell and tube heat exchanger.

(3) Strong adaptability

On the one hand, when assembling the heat exchanger, heat transfer plates can be easily added or removed according to production and process requirements, and the plates can be rearranged, and the process combination can be reselected. On the other hand, its adaptability is also reflected in its use. Plate heat exchangers are widely used. At present, they are widely used in various engineering fields such as chemical industry, machinery, cement, petroleum, power, and hot water heating. They are specifically used in heating, cooling, evaporation, condensation, and waste heat recovery processes to achieve the purpose of application through heat exchange between media in the plate heat exchanger.

(4) Flexible operation and convenient maintenance

The heat transfer plates and movable pressure plates are hung on the machine's beams, and a rolling device is installed above the pressure plate, which allows the equipment to be easily opened for cleaning, and a plate can be removed for inspection or gasket replacement.

Through a comparison of shell and tube and plate heat exchangers, the following conclusions can be drawn: plate heat exchangers have high heat transfer efficiency, small size, light weight, and easy disassembly and assembly. When the cooling water quality is good, it is a relatively ideal heat exchanger equipment. Combining the specific situation of the community heat exchange station, it is suitable to choose a plate heat exchanger as the heat exchange equipment for the community heat exchange station.

Common classification methods for plate heat exchangers

Three common types of plate heat exchangers