The working principle of the plate changer, the role and working principle of the plate changer

Working principle: Plate heat exchanger is a large air conditioning system.

Exhaust energy**, high-temperature flue gas waste heat** and an important device for computer CPU heat dissipation. The structure has a vacuum liquid-filled head and a core, the vacuum liquid-filled head is located on both sides of the vacuum liquid-filling channel, one side of the vacuum liquid-filled head is provided with a pipe, and the core body is composed of a vacuum liquid-filled channel and a plurality of plate fin channels overlapped at intervals.

The vacuum filling channel is provided with partitions up and down, and seals are arranged on both sides, and fins can be arranged in the channel. The plate fin channel is provided with partitions up and down, seals are arranged on both sides, and fins are arranged in the channel. Each fin channel is divided into two hot and cold channels in parallel by a strip.

After assembly, the whole is arranged horizontally and vertically.

Plate exchanger is plate heat exchanger, plate heat exchanger.

The plate changer calculates the heat exchange area and heat exchange according to the selection of inlet and outlet temperature, flow rate, nozzle diameter, etc., calculates how many heat exchange plates are needed, and arranges and combines the heat exchange plates into a plate changer according to certain rules.

The medium completes the functions of heat exchange, preheating, cooling and condensation through the geometry of the heat exchanger plate in the plate exchanger.

There is a temperature difference between the medium flowing through the different flow channels of the plate gap, and the heat transfer is carried out through the plate to achieve the heat exchange effect.

Plate change. heat exchanger) is used for efficient heat exchange. The working principle is plates and gaskets.

The four corner holes form a distribution pipe and a collection pipe for the fluid, and at the same time reasonably separate the hot and cold fluids, so that they flow in the flow channels on both sides of each plate, and the heat exchange is carried out through the plates.

Different corrugated plates are inverted with each other to form a complex flow channel, so that the fluid flows in a rotating three-dimensional flow channel between the corrugated plates, which can be used at a lower Reynolds number.

generally re=50 200).

So the heat transfer coefficient.

high, generally considered to be 3 to 5 times higher than the shell-and-tube type.

In the tube agitation lift shell heat exchanger, the two fluids flow in the tube and shell respectively, and the overall flow is cross-flow, and the logarithmic average temperature difference correction coefficient is small, while the plate heat exchanger.

In addition, the flow of cold and hot fluids in the plate heat exchanger is parallel to the heat exchange surface and there is no side flow, so the end temperature difference of the plate heat exchanger is small, and the heat exchange to water can be less than 1, while the shell and tube heat exchanger is generally 5 fff.

The role of a plate exchanger (heat exchanger) is to transfer heat efficiently. The working principle is that the four corner holes of the plate and the gasket form the distribution pipe and the collection pipe of the fluid, and at the same time, the cold and hot fluids are reasonably separated, so that they flow in the flow channels on both sides of each plate respectively, and the heat exchange is carried out through the plates.

Different corrugated plates are inverted with each other to form a complex flow channel, so that the fluid flows in a rotating three-dimensional flow in the flow channel between the corrugated plates, and can produce turbulent flow at a lower Reynolds number (generally re=50 200), so the heat transfer coefficient is high, which is generally considered to be 3 5 times that of the shell and tube type.

In the shell-and-tube heat exchanger, the two kinds of fluids flow in the tube and shell respectively, and the overall flow is cross-flow, and the correction coefficient of the logarithmic average temperature difference is small, while the plate heat exchanger is mostly parallel flow or counter-current flow mode, and its correction coefficient is usually around the right, in addition, the flow of cold and hot fluids in the plate heat exchanger is parallel to the heat exchange surface and has no side flow, so the end temperature difference of the plate heat exchanger is small, and the heat exchange to water can be less than 1, while the shell and tube heat exchanger is generally 5 fff.

Plate exchanger is a machine that is assembled by a series of evenly pressed heat exchanger plates (stainless steel, titanium, etc.) arranged according to a certain regularity.

The functions can be summed up as: heat exchange, preheating, cooling, condensation, refrigeration, and heating.

The role of a plate exchanger (heat exchanger) is to transfer heat efficiently. The working principle is plates and gaskets.

The four corner holes form a fluid sink for this distribution pipe and a collection pipe, while at the same time reasonably placing the cold.

Thermal fluids. Separate so that they are on both sides of each plate.

Runners. Medium flow, carried out through plates.

Heat exchange. Different corrugated plates are inverted with each other to form a complex flow channel, so that the fluid flows in a rotating three-dimensional flow channel between the corrugated plates, which can be at a lower level.

Reynolds number. Generally re=50 200).

Turbulence. So.

Heat transfer coefficient. high, generally considered to be 3 to 5 times higher than the shell-and-tube type.

At. Shell and tube heat exchangers.

, the two fluids are respectively in.

Tubing. and shell flow within the range, in general.

Cross-flow. Flow, logarithmic average temperature difference.

Correction factor. Small, while.

Plate heat exchangers.

Mostly. Parallel streaming.

In addition, the flow of cold and hot fluids in the plate heat exchanger is parallel to the heat exchange surface, none.

Sidestreams. Therefore, the terminal temperature difference of the plate heat exchanger is small, and the heat transfer to water can be less than 1, while the shell and tube heat exchanger is generally 5 fff.

Extended Materials. The plate type or corrugated type should be determined according to the actual needs of the heat exchange occasion. When the flow rate is large and the allowable pressure drop is small, the resistance should be selected.

Small plate type, on the contrary, choose a plate type with high resistance. According to.

Fluid pressure. and temperature situation, determine the choice of detachable, or.

Brazing. Style. When determining the plate type, it is not advisable to choose the plate with too small single plate area, so as to avoid too many plates and too low heat transfer coefficient, and this problem should be paid more attention to for larger heat exchangers.

Process refers to a set of media in parallel in the same flow direction within a plate heat exchanger.

Runners, while streaming.

Dow. In a plate heat exchanger, the medium flow channel composed of two adjacent plates. In general, a plurality of flow channels are connected in parallel or series to form different combinations of cold and hot medium channels.

The form of process combination should be based on heat exchange and.

Fluid resistance. Calculation, determined under the condition of satisfying the requirements of the process. Try to make hot and cold water in the flow channel.

Convective heat transfer coefficient.

equal or close to each other for the best heat transfer. This is because the convective heat transfer coefficients on both sides of the heat transfer surface are equal or close to each other.

Although the flow velocity between the plates of the plate heat exchanger is not equal, when calculating the heat transfer and fluid resistance, it is still used.

Average flow rate. Make the calculations. Because the "U" shaped single-process pipes are fixed on the hold-down plate, it is easy to disassemble and assemble.

The main functions of Banshan starvation are: heat exchange, preheating, cooling, and condensation.

Working principle: It is to have a series of heat exchange plates (at least the material is stainless steel, better titanium material, Harbin alloy, etc.) arrangement and combination, through the heat exchange between water and water, steam and water to completely exchange heat, preheat, cool and condense.