Plate-type heat exchanger matrix

FIELD: power industry.

SUBSTANCE: plate-type heat exchanger matrix includes intermediate shaped plate-turbuliser with the same relief geometry, which is located between heat release shaped surfaces.

EFFECT: considerable increase in the ratio of flow passages of shaped channels for adjacent heat carriers and their high heat power efficiency.

4 dwg

 

The invention relates to heat-exchange technique and can be used in the establishment and modernization of heat exchangers and devices, energy, transport and industrial use, which are based on different layouts plate surface.

A known design of plate heat exchangers on the basis of "traditional" layouts profile plate surface mesh in-line type with bilateral nodular protrusions and cavities [1, 2] provide high rates of heat and energy efficiency. This is because the complex geometry of the flow sections of the zigzag confused-diffuser channels formed by the surface of the heat transfer plates, synthesizes the structure of the tear-flow positive features of longitudinal flow in a curved channel (internal) and the external flow contacting spheroidal protrusions with chess into the servants ' heads or location, modeling cross streamlined short tubular elements with a variable radius forming and defining a generally favourable conditions for the interaction of the flow with heat transfer surface.

This noticeable lack of heat exchangers with the specified layout is the same value of the flow areas of the channels for different what about the physical properties and operating parameters of the fluids on both sides of the core sheet. Especially sharply this disadvantage manifests itself in heat exchangers with high costs and different densities of gaseous fluids in terms of weight and size restrictions applicable to the units of power plants. The ability to create plate heat exchangers with different size bushing sections to adjacent heat transfer can be achieved using layout plates with intermediate between the heat-release surfaces, the same type of profile plates energizers.

Objectives of the invention are the intensification of the heat transfer plate surface in terms of the new layout of the plates, providing a significant increase in the ratio of flow sections of channels for interconnecting carriers, reducing the metal and reduction of the matrix of the heat exchanger.

The tasks are solved using matrix plate heat exchanger surface in the form of plates mesh in-line type with equal bilateral nodular protrusions and depressions forming in mutual contact spheroidal protrusions isolated channels for adjacent carriers ("hot" and "cold"), characterized in that the channels on the side of one of the fluids is intermediate discontinious who I profiled plate-turbulator geometry splitting and relief, same with being in contact with both sides of the heat-release plate surfaces, which significantly increases the ratio of the flow areas of the channels of adjacent fluids with different thermal and hydrodynamic parameters and provides high heat efficiency of this layout option plate surface by additional turbulence in the flow, and also due to the effect of the fins specified intermediate plate-turbulizer (in particular, from a material with high thermal conductivity), caused by the contact mechanism of thermal conductivity reinforced larger area and density of mutual contact of adjacent plates with spheroidal projections with flat top in one embodiment, the composition or contacting spheroidal protrusions heat-release plate with spheroidal protrusions plates-turbulizer with spherical recesses at their tops in the other.

During implementation of the invention can be obtained from the following technical and economic results.

1. Intensification of heat transfer surfaces by additional turbulence in the flow when interacting with relief elements of complex shape, as well as due to the effect of the fins of the intermediate core plates-turbulizer, obpl is run by the mechanism of contact conductivity.

2. The decrease of metal matrix of the heat exchanger when using layout with plates energizers.

Figure 1 shows a diagram of the "traditional" layout of the plates in contact with spheroidal protrusions, forming a t-section for connecting the coolant (S1/S2=1); figure 2 - the scheme of the new proposed layout of the plates with intermediate between the heat surfaces of the plates energizers that implements raznoporodnye section for connecting the coolant (S1/S2>1); figure 3 shows a fragment of the contacting plates (figure 2) with a larger area of contact spheroidal projections with flat tops; figure 4 shows a fragment of the contacting plates (figure 2) with a larger area of contact spheroidal and vertices with spherical hollows.

During operation of the heat exchanger with the proposed matrix heat from the hot coolant flowing within the channels of the heat-release profile elements, is transmitted through the walls surrounding them cold (related) carrier and at the same time, due to contact of thermal conductivity of the intermediate profile plate-turbulization, in turn implements the effect of the fins in the flow stream. Thus, thermal efficiency of the surface of the profiled channel matrix ODA is stipulated by the turbulization of the flow of fluids spheroidal forges contact plates and further intensification of the process of heat transfer through the contact mechanism of thermal conductivity on the side of the coolant with increased reduced cross-section channels.

Use layouts plate surface with intermediate plates energizers with chess into the servants ' heads or location of the contacting elements of the relief allows for a significant increase in the ratio of the flow areas of the channels to interconnecting carriers to vary their mass flow rates, while providing high performance heat efficiency profiled channels and keeping rigidity, strength and other performance parameters matrix plate heat exchanger.

Sources of information

1. Berman S. Copyright certificate №122567.

2. Andreev M., Berman, S.S., and other Heat exchange equipment of power plants. - M: motor cycle", 1963. - 240 S.

The matrix plate heat exchanger surface in the form of plates mesh in-line type with equal bilateral nodular protrusions and depressions forming in mutual contact spheroidal protrusions isolated channels for adjacent carriers ("hot" and "cold"), characterized in that the channels on the side of one of the fluids is placed intermediate the spacer profile plate-turbulator geometry splitting and elevation, the same being in contact with both sides teplootdayuschey and plate surfaces, significantly increases the ratio of the flow areas of the channels of adjacent fluids with different thermal and hydrodynamic parameters and provides high heat efficiency of this layout option plate surface by additional turbulence in the flow, and also due to the effect of the fins specified intermediate plate-turbulizer (in particular from a material with high thermal conductivity), caused by the contact mechanism of thermal conductivity reinforced larger area and density of mutual contact of adjacent plates with spheroidal projections with flat top in one embodiment, the composition or contacting spheroidal protrusions heat-release plate with spheroidal protrusions plates turbulizer with spherical recesses at their tops in the other.



 

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