A polyhedral radiative heat exchanger

Abstract

This invention discloses a polyprismatic radiative heat exchanger, comprising a polyprismatic body. The cross-section of the polyprismatic body includes points E, A, B, D, C, F, M, N, Q, K, H, and G in a clockwise direction. Two cavities enclosed by points AEGH and CFMN are heating devices, located on opposite sides of the top of a recessed portion. The facets containing line segments AE and FC are radiative heating surfaces. The cavity enclosed by points ABDCNQKH is a cooling device, and the facets containing line segments AB, CD, and BD are radiative cooling surfaces. This invention can simultaneously provide both heating and cooling, improving the heat exchange efficiency of the radiative heat exchanger.

Description

Technical Field

[0001] This invention relates to the field of radiant heat exchanger technology, and more particularly to a multi-prism type radiant heat exchanger device. Background Technology

[0002] Currently, most radiant cooling heat exchangers on the market utilize the principle of high reflectivity of the high-temperature spectrum and high absorption of the low-temperature spectrum of solar energy to achieve cooling. However, the reflected high-temperature spectrum is not utilized, resulting in only cooling functionality and no heating capability. This makes them unsuitable for applications requiring both cooling and heating simultaneously. Some heat exchanger devices that claim to provide both radiant cooling and heating are simply mechanically combined with radiant heating heat exchangers. In these cases, the reflected high-temperature spectrum in the radiant cooling heat exchanger is not utilized, leading to low heat exchange efficiency and limiting the effectiveness of the radiant heat exchanger. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, this invention proposes a prismatic radiative heat exchange device that can simultaneously provide cold and heat, thereby improving the heat exchange efficiency of the radiative heat exchange device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A polyprismatic radiative heat exchange device includes a polyprismatic body, the cross-section of which includes points E, A, B, D, C, F, M, N, Q, K, H, and G in a clockwise direction.

[0006] Among them, the line connecting points EABDCF forms the concave part of the polygonal prism; line segments AB and CD are arc segments, and line segments BD, AE, CF, GE, FM, GH, HK, MN, NQ, and KQ are all straight line segments;

[0007] The two cavities enclosed by points AEGH and CFMN are heating devices, and the two heating devices are located on the top two sides of the concave part, respectively. The facets where line segments AE and FC are located are the radiant heating surfaces.

[0008] The cavity enclosed by points ABDCNQKH is a refrigeration device, and the facets containing line segments AB, CD, and BD are respectively radiative refrigeration surfaces.

[0009] Furthermore, the facets containing line segments AH and CN are equipped with heat insulation layers.

[0010] Furthermore, line segment AC is a horizontal line, line segments AH and CN are on the same straight line as AB, line segment BD is parallel to AC, line segments EA and FC are perpendicular to AC respectively, and arc segments AB and CD are symmetrical to each other. The center O of arc segment AB is on the extension of line segment CF, and points OAC form an isosceles right triangle, and points OBF form an isosceles triangle.

[0011] Furthermore, the heat transfer medium inside the heating device is preferably water.

[0012] Furthermore, the refrigerant inside the refrigeration device is preferably water.

[0013] The present invention adopts the above technical solution and has a heating device and a cooling device, which can provide both cold and heat simultaneously; in addition, the polygonal prism adopts a special cross-sectional design, which can effectively improve the heat exchange efficiency of the radiative heat exchange device. Attached Figure Description

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments;

[0015] Figure 1 This is a perspective view of the present invention;

[0016] Figure 2 This is a cross-sectional view of the present invention;

[0017] Figure 3 This is one of the schematic diagrams of the method for determining the cross-sectional feature edge line of the present invention;

[0018] Figure 4 This is a second schematic diagram of the method for determining the cross-sectional feature edge line of the present invention. Implementation

[0019] like Figure 1-4 As shown, the present invention provides a polyprismatic radiative heat exchange device, comprising a polyprismatic body 1, the cross-section of which includes points E, A, B, D, C, F, M, N, Q, K, H, and G in a clockwise direction.

[0020] Among them, the line connecting points EABDCF forms the concave part of the polygonal prism 1; line segments AB and CD are arc segments, and line segments BD, AE, CF, GE, FM, GH, HK, MN, NQ, and KQ are all straight line segments;

[0021] The two cavities enclosed by points AEGH and CFMN are heating devices 2. The two heating devices 2 are located on the top sides of the concave part, and the facets where line segments AE and FC are located are the radiative heating surfaces. The heat transfer medium inside the heating device 2 is preferably water.

[0022] The cavity enclosed by points ABDCNQKH is the refrigeration device 3, and the facets containing line segments AB, CD, and BD are the radiative cooling surfaces, respectively. Water is the preferred refrigerant inside the refrigeration device 3.

[0023] The facets containing line segments AH and CN are equipped with heat insulation layers.

[0024] The cross-sectional edges of the polygonal prism 1 have the following characteristics: line segment AC is a horizontal line, line segments AH and CN are on the same straight line as AB, line segment BD is parallel to AC, line segments EA and FC are perpendicular to AC respectively, arc segments AB and CD are symmetrical to each other, and the center O of arc segment AB is on the extension of line segment CF, and points OAC form an isosceles right triangle, and points OBF form an isosceles triangle.

[0025] Methods and steps for determining characteristic edges: (e.g.) Figure 3-4 Determine the length of line segment CA and the distance h between line segments AC and BD. Construct an isosceles right triangle ACO with line segment AC as one leg. With point O as the center and the length of line segment OA as the radius, construct line segment AB. Construct the perpendicular bisector of line segment OB, intersecting OC at point F. Construct an isosceles right triangle ACO' with line segment CA as one leg. With point O' as the center and the length of line segment O'C as the radius, construct line segment CD. Construct the perpendicular bisector of line segment O'C, intersecting O'A at point E.

[0026] The working principle of this invention is as follows: The radiative cooling surface in this invention has high emissivity, allowing for radiative heat dissipation from the low-temperature outer space, while the cooling device dissipates heat. The radiative cooling surface in this invention has high reflectivity, reflecting most of the heat directly hitting the curved surface back to the radiative heating surface. The radiative heating surface in this invention has high absorptivity, absorbing most of the heat directly hitting and reflected onto it. The radiative heating surface in this invention has low emissivity, resulting in minimal radiative heat dissipation from the low-temperature outer space. When sunlight directly hits the radiative cooling surface, a portion of the sunlight scattered onto the curved surface is reflected back to the radiative heating surface, where the heat is further absorbed by the heating device, thereby effectively improving heat exchange efficiency.

[0027] Several radiant heat exchange devices of this invention are arranged side by side to form a heat exchange unit. The return port of each heating device is connected to the hot water return main pipe, and the outlet of each heating device is connected to the hot water outlet main pipe; the return port of each cooling device is connected to the cold water return main pipe, and the outlet of each cooling device is connected to the cold water outlet main pipe. Each heat exchange device simultaneously collects heat and cold for user use, and the used cold and hot water returns to the radiant heat exchange device to absorb and generate heat. This cycle continues.

[0028] In addition, several heat exchange units can also form a heat exchange system.

[0029] The implementation of the present invention has been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are illustrative and not intended to limit the present invention. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A polyhedral radiative heat exchanger, characterized in that: The prism includes a cross-section of which, in a clockwise direction, includes points E, A, B, D, C, F, M, N, Q, K, H, and G in sequence. Among them, the line connecting points EABDCF forms the concave part of the polygonal prism; line segments AB and CD are arc segments, and line segments BD, AE, CF, GE, FM, GH, HK, MN, NQ, and KQ are all straight line segments; The two cavities enclosed by points AEGH and CFMN are heating devices, and the two heating devices are located on the top two sides of the concave part, respectively. The facets where line segments AE and FC are located are the radiant heating surfaces. The cavity enclosed by points ABDCNQKH is a refrigeration device, and the facets containing line segments AB, CD, and BD are respectively radiative refrigeration surfaces.

2. The polygonal radiant heat exchanger according to claim 1, characterized in that: Both the surfaces containing line segments AH and CN are equipped with heat insulation layers.

3. The polygonal radiant heat exchanger according to claim 1, characterized in that: Line segment AC is a horizontal line, line segments AH and CN are on the same straight line, line segment BD is parallel to AC, line segments EA and FC are perpendicular to AC respectively, arc segments AB and CD are symmetrical to each other, the center O of arc segment AB is on the extension of line segment CF, and points OAC form an isosceles right triangle, and points OBF form an isosceles triangle.

4. The polygonal radiative heat exchanger according to claim 1, characterized in that: The heat transfer medium inside the heating device is water.

5. The polygonal radiant heat exchanger according to claim 1, characterized in that: The refrigerant inside the refrigeration device is water.

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