CN220229601U - PVT heat collector with distributed flow channel structure - Google Patents

Abstract

The utility model is suitable for solar technology, and provides a PVT collector with a distributed flow channel structure, which comprises: a duct board; the pipeline plate is attached to the bottom plate; wherein the duct board comprises a plurality of groups of partitions, a first main runner and a second main runner; when the heat conducting medium enters, the heat conducting medium enters into different subareas under the guidance of the first main runner, and is collected and led out again through the second main runner. The first partition, the second partition, the third partition and the fourth partition are mutually separated, the mobility among the regions is reduced, the temperature gradient is newly reestablished between the first main runner and the second main runner, the flow length of the regions is greatly shortened compared with the straight-through temperature gradient, the temperature gradient value is reduced, and the effect of uniform temperature distribution is enhanced.

Description

PVT heat collector with distributed flow channel structure

Technical Field

The utility model belongs to the technical field of solar energy, and particularly relates to a PVT heat collector with a distributed flow channel structure.

Background

The photovoltaic-photo-thermal integrated assembly (PVT assembly) utilizes solar energy to synchronously realize synchronous power generation and heating by combining the photovoltaic element and the photo-thermal assembly.

However, the photovoltaic element has a negative temperature coefficient, that is, the higher the temperature is, the lower the power generation efficiency is; when the high-efficiency battery and the low-efficiency battery inside the photovoltaic module are connected in series and parallel, the overall efficiency of the system is low and not high enough, so that the power generation efficiency of the whole photovoltaic module can be compromised, and the power generation efficiency of the photovoltaic element is affected by the temperature non-uniformity of the heat collecting plate in the photo-thermal module.

Disclosure of Invention

The utility model provides a PVT (polyvinyl chloride) heat collector with a distributed flow channel structure, and aims to solve the problem that the temperature non-uniformity of a heat collecting plate in a photo-thermal assembly in a photovoltaic-photo-thermal integrated assembly affects the power generation efficiency of the photovoltaic assembly at present.

The utility model is realized in that a PVT heat collector with a distributed flow channel structure comprises:

a duct board;

the pipeline plate is attached to the bottom plate;

wherein the duct board comprises a plurality of groups of partitions, a first main runner and a second main runner; when the heat conducting medium enters, the heat conducting medium enters into different subareas under the guidance of the first main runner, and is collected and led out again through the second main runner.

Preferably, the partitions include a first partition, a second partition, a third partition, and a fourth partition.

Preferably, the first partition, the second partition, the third partition and the fourth partition are spaced apart from each other.

Preferably, the first partition includes:

the first sub-runner is communicated with the first main runner;

a second sub-flow passage communicating with the second main flow passage;

and the branch pipeline is communicated between the first branch channel and the second branch channel.

Preferably, the first and second sub-channels are parallel to each other.

Preferably, the second, third and fourth partitions have the same structure as the first partition;

preferably, a first medium port is arranged on one side of the first main flow passage close to the fourth partition;

preferably, a second medium port is formed in one side, close to the first partition, of the second main flow channel.

Preferably, the number of the partitions is not less than four groups, and the partitions with more partitions can reduce the temperature difference between different partitions and further improve the uniformity of temperature distribution.

Compared with the prior art, the embodiment of the application has the following main beneficial effects:

the PVT heat collector with the distributed flow channel structure is separated from each other through the first partition, the second partition, the third partition and the fourth partition, and newly reestablishes the temperature gradient between the first main flow channel and the second main flow channel, so that compared with the straight-through temperature gradient, the PVT heat collector with the distributed flow channel structure greatly shortens the flow length of the area, reduces the temperature gradient value and enhances the effect of uniform temperature distribution.

Drawings

Fig. 1 is a schematic structural diagram of a PVT heat collector with a distributed flow channel structure according to the present utility model.

Fig. 2 is a schematic diagram of the internal structure of a piping plate of a PVT collector with a distributed flow channel structure according to the present utility model.

Fig. 3 is a schematic diagram of a branch pipe and a bottom plate of a PVT collector with a distributed flow channel structure according to the present utility model.

Reference numerals illustrate:

110. a duct board; 120. a first main flow passage; 130. a second main flow passage; 140. a first media port; 150. a second media port; 210. a first partition; 211. a first sub-flow path; 212. a second shunt; 213. a branch pipe; 220. a second partition; 230. a third partition; 240. a fourth partition; 300. a bottom plate.

Detailed Description

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the applications herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The embodiment of the utility model provides a PVT heat collector with a distributed flow channel structure, as shown in figures 1-3, comprising:

a duct board 110;

a bottom plate 300, wherein the duct board 110 is attached to the bottom plate 300;

wherein the duct board 110 includes a plurality of partitions, a first main flow channel 120 and a second main flow channel 130; the different subareas are communicated through the first main runner 120 and the second main runner 130, when the heat conducting medium enters, the heat conducting medium enters the different subareas under the guidance of the first main runner 120, and then is collected and flows out again through the second main runner 130, the blocking change length of the subareas is utilized to reduce the temperature gradient of the heat conducting medium in the photo-thermal process, and the temperatures of the different areas on the bottom plate 300 are uniformly distributed;

in this embodiment, the surface of the bottom plate 300, which is far away from the conduit board 110, is in fit connection with the photovoltaic cell, so that the heat transfer efficiency is greatly improved, the connection mode between the bottom plate 300 and the conduit board 110 can be processed by adopting inflation or welding, and the bottom plate 300 and the conduit board 110 are made of stainless steel materials;

in this embodiment, the multiple groups of partitions include a first partition 210, a second partition 220, a third partition 230 and a fourth partition 240, where the first partition 210, the second partition 220, the third partition 230 and the fourth partition 240 are all in independent closed states except for being communicated through the first main flow channel 120 and the second main flow channel 130, and after the heat-conducting medium enters, the heat-conducting medium cannot move freely in each partition, and can only be communicated through the fixed first main flow channel 120 and the second main flow channel 130, so that the fluidity between the regions is reduced, the temperature gradient in each region is kept relatively consistent, and the temperature gradient between the whole pipeline boards 110 is obviously reduced compared with that in the through mode due to the reduced region;

as a preferred implementation manner in this embodiment, the first partition 210 includes:

a first sub-flow path 211, the first sub-flow path 211 communicating with the first main flow path 120;

a second sub-flow channel 212, the second sub-flow channel 212 and the first sub-flow channel 211 being parallel to each other, the second sub-flow channel 212 communicating with the second main flow channel 130;

a branch pipe 213, the branch pipe 213 being communicated between the first and second branch pipes 211 and 212;

in this embodiment, the heat-conducting medium enters the first sub-channel 211 from the first main channel 120, and enters the second sub-channel 212 along with the different branch channels 213; and then flows from the second sub-flow channel 212 to the second main flow channel 130 to form an internal flow; the second, third and fourth partitions 220, 230 and 240 have the same structure as the first partition 210, the first main flow channel 120 transmits the heat transfer medium into the first, second, third and fourth partitions 210, 220, 230 and 240, and the second main flow channel 130 collects the heat transfer medium flowing out of the first, second, third and fourth partitions 210, 220, 230 and 240, and a new temperature gradient is re-established between the first and second main flow channels 120 and 130 by separating from each other, a new temperature gradient pattern is established, and the through-type temperature gradient is prevented from being established at one side of the first and fourth partitions 210 and 240; compared with the prior art, the method has the advantages that the flow length of the area is greatly shortened, the temperature gradient value is reduced, and the effect of uniform temperature distribution is enhanced;

as a preferred implementation manner in this embodiment, a first medium port 140 is disposed on a side of the first main flow channel 120 near the fourth partition 240, and a second medium port 150 is disposed on a side of the second main flow channel 130 near the first partition 210;

in this embodiment, the first medium port 140 and the second medium port 150 are used as an inlet and an outlet of the heat-conducting medium, and the inlet and outlet directions can be adjusted according to the situation;

as a preferred implementation manner in this embodiment, the number of the partitions is not less than four groups;

in the embodiment, the partitions with more partitions can reduce the temperature difference between different partitions and improve the uniformity of temperature distribution;

in a further preferred embodiment of the present utility model, the branch pipe 213 is arranged in parallel with both the first main flow passage 120 and the second main flow passage 130;

in a further preferred embodiment of the present utility model, openings penetrating through the bottom plate 300 and the conduit board 110 are provided on the bottom plate 300 and the conduit board 110 for circuit arrangement of the photovoltaic module, the positions of the openings can be preset according to the structure of the photovoltaic module, and the openings avoid the conduit board 110 as much as possible;

it should be noted that, for simplicity of description, the foregoing embodiments are all illustrated as a series of acts, but it should be understood by those skilled in the art that the present utility model is not limited by the order of acts, as some steps may be performed in other order or concurrently in accordance with the present utility model. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required for the present utility model.

The above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the scope of the present utility model. It will be apparent that the described embodiments are merely some, but not all, embodiments of the utility model. Based on these embodiments, all other embodiments that may be obtained by one of ordinary skill in the art without inventive effort are within the scope of the utility model. Although the present utility model has been described in detail with reference to the above embodiments, those skilled in the art may still combine, add or delete features of the embodiments of the present utility model or make other adjustments according to circumstances without any conflict, so as to obtain different technical solutions without substantially departing from the spirit of the present utility model, which also falls within the scope of the present utility model.

Claims (9)

1. A PVT collector of a distributed flow channel structure, comprising:

a duct board;

the pipeline plate is attached to the bottom plate;

wherein the duct board comprises a plurality of groups of partitions, a first main runner and a second main runner; when the heat conducting medium enters, the heat conducting medium enters into different subareas under the guidance of the first main runner, and is collected and led out again through the second main runner.

2. The PVT thermal collector of claim 1 wherein the partitions comprise a first partition, a second partition, a third partition, and a fourth partition.

3. The PVT collector of claim 2 wherein the first, second, third, and fourth partitions are spaced apart from one another.

4. A PVT collector having a distributed flow channel structure according to claim 3 wherein the first partition comprises:

the first sub-runner is communicated with the first main runner;

a second sub-flow passage communicating with the second main flow passage;

and the branch pipeline is communicated between the first branch channel and the second branch channel.

5. The PVT collector of claim 4 wherein the first and second flow-through channels are parallel to each other.

6. The PVT collector of claim 4 wherein the second, third and fourth partitions are identical in structure to the first partition.

7. The PVT collector of claim 6 wherein the first main flow channel has a first medium port on a side adjacent to the fourth section.

8. The PVT collector of claim 7 wherein the second flow channel has a second media port on a side thereof adjacent to the first section.

9. A PVT collector having a distributed flow channel structure as described in claim 1 wherein the number of partitions is not less than four.