CN201666674U - Heat pipe compound parabolic collector placed in east-west direction - Google Patents

Abstract

The utility model relates to a heat pipe type compound parabolic heat collector placed east-west, the heat pipe type compound parabolic heat collector comprises a plurality of heat pipe type compound parabolic heat collecting devices (1), heat exchange boxes (2) and several The fixed bracket (3); the heat exchange end of the heat pipe type compound parabolic light concentrating device (1) is connected to the heat exchange box (2), and a plurality of heat pipe type compound parabolic light concentrating devices (1) are symmetrically distributed in the heat exchange The east and west sides of the hot box (2). The east-west heat pipe type compound parabolic heat collector has the advantages of simple structure, low cost, high concentration ratio and good heat collection effect.

Description

Heat pipe compound parabolic collector placed in east-west direction

technical field

The utility model relates to a solar energy concentrating and heat collecting device, in particular to a non-tracking and concentrating light and heat collecting device, which belongs to the technical field of solar energy concentrating and heat collecting.

Background technique

As a clean, non-polluting renewable energy source, solar energy is considered an important part of the world's energy strategy for its development and utilization.

Compound parabolic concentrator (CPC for short) is a non-imaging concentrator designed according to the principle of edge optics. In theory, the incident light within the acceptance angle range will reach the receiver directly or after reflection. For a given acceptance angle range, it can achieve the maximum concentration ratio, so it is applied in solar thermal and photovoltaic systems. In non-tracking, tracking (secondary reflector) systems. The establishment and development of the CPC model began in the late 1970s, and a large number of scholars have done related research. Tubular CPC is the most widely used in photothermal systems. It has the smallest heat dissipation area, reduces costs without tracking devices, and can meet the needs of medium and high temperature heat collection.

Solar water heaters are currently the only large-scale use of solar heat utilization devices. According to the axial direction of the heat collecting tube, they can be divided into two types: north-south direction and east-west direction. For collectors in the north-south direction, the axial direction of the heat collecting tubes has a certain angle with the ground, while for the collectors in the east-west direction, the axial direction of the heat collecting tubes is parallel to the ground.

Because heat pipes have the advantages of high thermal conductivity, excellent isothermal properties, thermal diode properties, not easy to freeze, and fast start-up, their application in solar heat collection is considered to be a major breakthrough in solar thermal utilization. At present, the technology of heat pipe solar water heater is relatively mature, and some manufacturers have already industrialized it.

The heat pipe type CPC vacuum heat collector has the advantages of less heat loss, small heat capacity, thermal diode, and wide working range due to the use of vacuum technology and heat pipe technology at the same time. Due to the use of CPC technology, it can achieve better without tracking devices. Heat collection effect. However, due to the positional relationship between the earth and the sun, when the axis of the compound parabolic collector is in the north-south direction, its concentration ratio can only be designed to be small; when the axis of the compound parabolic collector is in the east-west direction, its concentration The light ratio can be designed to be larger. However, the thermosiphon heat pipe used must have a certain inclination at the condensing end than the evaporating section, so it is difficult to arrange the heat collecting pipes in the east-west direction, so the current heat pipe-type compound parabolic concentrators are placed in the north-south direction.

Contents of the invention

Technical problem: The technical problem to be solved by the utility model is to provide a heat pipe type composite parabolic heat collector placed in the east-west direction with simple structure, low cost, high light concentration ratio and good heat collection effect.

Technical solution: In order to solve the above technical problems, the technical solution of the east-west heat pipe type compound parabolic heat collector provided by the utility model is as follows:

The heat pipe type compound parabolic heat collector includes a plurality of heat pipe type compound parabolic light concentrating heat collectors, a heat exchange box and several fixed brackets;

The heat exchange end of the heat pipe compound parabolic surface concentrating heat collection device is connected to the heat exchange box, and multiple heat pipe type compound parabolic surface light concentrating heat collection devices are symmetrically distributed on the east and west sides of the heat exchange box; the direction of the long side of the heat exchange box It is a certain angle on the north bias; the axial direction of the heat pipe type compound parabolic light concentrating device is perpendicular to the direction of the long side of the heat exchange box, and the end of the heat pipe type compound parabolic light concentrating device in contact with the heat exchange box is larger than the The other end of the device is higher than a certain distance to meet the normal operation of the heat pipe; several fixed brackets are connected with the heat pipe type compound parabolic concentrating heat collector and the heat exchange box to support and fix the heat pipe type compound parabolic light concentrating device and heat exchange box.

Preferably, the heat pipe compound parabolic concentrator includes a glass tube, a heat pipe positioned inside the glass tube and a compound parabolic concentrating plate; a vacuum is formed between the heat pipe and the glass tube; the compound parabolic concentrating plate is mounted on the outside of the glass tube, and the compound parabolic There is a gap between the condensing plate and the glass tube and half surrounds the glass tube.

Preferably, the heat pipe type compound parabolic concentrating heat pipe includes a glass tube, a heat pipe positioned inside the glass tube and a compound parabolic concentrating plate; a vacuum is between the heat pipe and the glass tube; the compound parabolic concentrating plate is installed in the vacuum and contacts the glass tube , There is a gap between the compound parabolic concentrating plate and the heat pipe and half surrounds the heat pipe.

Preferably, the fixed bracket adopts a height-adjustable bracket, and the angle between the long side of the heat exchange box and the ground can be changed by adjusting the bracket.

Preferably, the heat exchange box contains a polyurethane insulation layer, the composite parabolic concentrating plate is made of aluminum plate, and the glass tube is made of high borosilicate glass.

Preferably, the half-angle of the light-gathering receiving plate of the compound parabolic surface is in the range of 15°-75°.

Preferably, the direction of the long side of the heat exchange box is at a certain angle to the true north, and the range of the angle is ±30 degrees of the local latitude.

Beneficial effect:

1) The device adopts a compound parabolic heat collector with a certain inclination angle, which can achieve a high concentration ratio and a high total solar energy utilization rate without affecting the normal operation of the heat pipe; In the case of tracking, a better effect of concentrating light and heat is achieved.

2) The device uses a heat pipe as a receiving tube, which has the advantages of high thermal conductivity, excellent isothermal performance, thermal diode performance, not easy to freeze, and fast start-up. The heat collection tube adopts vacuum technology, which can reduce heat loss and achieve higher heat collection efficiency and heat collection temperature.

3) The device is placed in an east-west direction and uses a height-adjustable bracket, which can achieve a higher concentration ratio and collect more solar energy by seasonally adjusting the orientation of the compound parabolic concentrator.

4) The device adopts a symmetrical arrangement on the east and west sides, which can reduce the cost, reduce the size of the heat exchange box, and speed up the temperature increase of the heat-collecting working medium.

5) The external concentrating method of placing the concentrating plate on the outside of the glass tube can be used, which is low in cost and easy to process and manufacture. The method is convenient for transportation, installation and maintenance, with less optical loss and long service life.

6) The device has high concentration ratio, simple manufacture, low cost, good heat collection effect, easy installation and maintenance, beautiful appearance, simple structure and easy industrial production.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the heat pipe type composite parabolic heat collector placed east-west that is adopted in the first embodiment provided by the utility model;

In the figure, there are: heat pipe type compound parabolic surface light concentrating device 1, heat exchange box 2, fixed bracket 3;

Fig. 2 is a schematic structural view of the heat pipe type compound parabolic light concentrating and heat collecting device 1 adopted in the first embodiment provided by the present invention;

In the figure: heat pipe 1-1, composite parabolic concentrating plate 1-2, glass tube 1-3;

Fig. 3 is the three-dimensional structure schematic diagram of the heat pipe type composite parabolic heat collector placed east-west that is adopted in the second embodiment provided by the utility model;

In the figure, there are: heat pipe type compound parabolic surface light concentrating device 1, heat exchange box 2, fixed bracket 3;

Fig. 4 is a schematic structural view of the heat pipe type compound parabolic light concentrating and heat collecting device 1 adopted in the second embodiment provided by the present invention;

In the figure, there are: heat pipe 1-1, composite parabolic concentrating plate 1-2, and glass tube 1-3.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

The heat pipe type composite parabolic heat collector placed in the east-west direction of the utility model includes a plurality of heat pipe type composite parabolic light concentrating heat collectors 1, a heat exchange box 2 and a number of fixed brackets 3;

The heat exchange end of the heat pipe type compound parabolic concentrating heat collecting device 1 is connected to the heat exchange box 2, and a plurality of heat pipe type compound parabolic light concentrating heat collecting devices 1 are symmetrically distributed on the east and west sides of the heat exchange box 2; the heat exchange box 2 The direction of the long side is a certain angle on the true north; the axial direction of the heat pipe type compound parabolic light concentrating heat collecting device 1 is perpendicular to the direction of the long side of the heat exchange box 2, and the heat pipe type compound parabolic light concentrating heat collecting device 1 and One end of the heat exchange box 2 is higher than the other end of the device by a certain distance to meet the normal operation of the heat pipe; several fixed brackets 3 are connected with the heat pipe type compound parabolic light concentrating heat collection device 1 and the heat exchange box 2 for Supporting and fixing the heat pipe type compound parabolic light concentrating heat collecting device 1 and the heat exchange box 2 .

The heat pipe type compound parabolic concentrating heat collection device 1 includes a glass tube 1-3, a heat pipe 1-1 located inside the glass tube 1-3 and a compound parabolic concentrating plate 1-2; between the heat pipe 1-1 and the glass tube 1-3 It is a vacuum; the compound parabolic concentrating plate 1-2 is installed outside the glass tube 1-3, and there is a gap between the compound parabolic concentrating plate 1-2 and the glass tube 1-3 and half surrounds the glass tube 1-3.

The heat pipe type compound parabolic concentrator tube 1 includes a glass tube 1-3, a heat pipe 1-1 located inside the glass tube 1-3 and a compound parabolic concentrator plate 1-2; between the heat pipe 1-1 and the glass tube 1-3 is Vacuum; the compound parabolic concentrating plate 1-2 is installed in the vacuum and is in contact with the glass tube 1-3, there is a gap between the compound parabolic concentrating plate 1-2 and the heat pipe 1-1 and half surrounds the heat pipe 1-1.

The fixed bracket 3 adopts a bracket whose height can be adjusted, and the angle between the long side of the heat exchange box 2 and the ground can be changed by adjusting the bracket.

The heat exchange box 2 contains a polyurethane insulation layer, the composite parabolic concentrating plate 1-2 is made of aluminum plate, and the glass tube 1-3 is made of high borosilicate glass.

The range of the light-gathering receiving half-angle of the compound parabolic light-gathering plate 1-2 is 15°-75°.

The direction of the long side of the heat exchange box 2 is at a certain angle to the true north, and the range of the angle is ±30 degrees of the local latitude.

Example 1

The heat pipe type compound parabolic heat collector placed in the east-west direction includes 24 heat pipe type compound parabolic light concentrating heat collectors 1, heat exchange box 2, and fixed bracket 3; The heat box 2 is connected, and 24 heat pipe-type composite parabolic concentrators 1 are symmetrically distributed on the east and west sides of the heat exchange box 2; the direction of the long side of the heat exchange box 2 is 32° from the north; The axial direction of the parabolic surface concentrating and heat collecting device 1 is perpendicular to the direction of the long side of the heat exchange box 2, and the end of the heat pipe type compound parabolic surface concentrating and heat collecting device 1 in contact with the heat exchange box 2 is higher than the other end of the device by a certain amount. distance, so that the axial direction of the device is at an angle of 20° to the ground; the fixed bracket 3 is connected with the heat pipe type compound parabolic light concentrating device 1 and the heat exchange box 2, and is used to support and fix the heat pipe type compound parabolic light concentrator Thermal device 1 and heat exchange box 2. The heat exchange box 2 contains a polyurethane insulation layer. The fixed bracket 3 adopts a bracket whose height can be adjusted, and the angle between the long side of the heat exchange box 2 and the ground can be changed by adjusting the bracket.

The heat pipe type compound parabolic concentrating heat collection device 1 includes a compound parabolic concentrating plate 1-2, a glass tube 1-3, a heat pipe 1-1 located inside the glass tube 1-3; between the heat pipe 1-1 and the glass tube 1-3 It is a vacuum, and the compound parabolic concentrating plate 1-2 is installed on the outside of the glass tube 1-3. The composite parabolic concentrating plate 1-2 is made of aluminum plate, and the glass tube 1-3 is made of high borosilicate glass 3.3. The heat pipe 1-1 has a length of 1.5 meters. The half-angle of receiving light of the compound parabolic concentrating plate is 30°

Example 2

The east-west heat pipe type compound parabolic heat collector provided by the utility model includes 24 heat pipe type compound parabolic light concentrating heat collecting tubes 1 , a heat exchange box 2 and several fixed brackets 3 . The heat exchange end of the heat pipe type composite parabolic concentrator tube 1 is connected to the heat exchange box 2, and 24 heat pipe type composite paraboloid concentrator tubes 1 are symmetrically distributed on the east and west sides of the heat exchange box 2; the length of the heat exchange box 2 The direction of the side is 32° upward from the true north; the axial direction of the heat pipe type compound parabolic concentrator tube 1 is perpendicular to the direction of the long side of the heat exchange box 2, and the heat pipe type compound paraboloid concentrator tube 1 and the heat exchange box 2 One end of the contact is higher than the other end of the tube by a certain distance, so that the tube is at an angle of 20° to the ground; a number of fixed brackets 3 are respectively connected with the heat pipe type compound parabolic concentrator tube 1 and the heat exchange box 2, and are used to Support and fix the heat pipe type composite parabolic concentrating heat collector tube 1 and the heat exchange box 2. The heat exchange box 2 contains a polyurethane insulation layer. The fixed bracket 3 adopts a bracket whose height can be adjusted, and the angle between the long side of the heat exchange box 2 and the ground can be changed by adjusting the bracket.

The heat pipe type composite parabolic concentrator tube 1 includes a composite parabolic concentrator plate 1-2, a glass tube 1-3, and a heat pipe 1-1 located inside the glass tube 1-3; between the heat pipe 1-1 and the glass tube 1-3 is Vacuum, the compound parabolic concentrating plate 1-2 is installed in the vacuum and is in contact with the glass tube 1-3, there is a gap between the compound parabolic concentrating plate 1-2 and the heat pipe 1-1.

The composite parabolic concentrating plate 1-2 is made of aluminum plate, and the glass tube 1-3 is made of high borosilicate glass. The heat pipe 1-1 has a length of 1.5 meters. The receiving half angle of the light concentrating of the compound parabolic concentrating plate 1-2 is 45°.

The utility model can also have other implementation modes, and any technical solutions formed by any minor modification, equivalent transformation, and substitution based on the technical essence of the present invention all fall within the protection scope of the utility model.

Claims (7)

1. the heat pipe type composite parabolic heat collector placed of an East and West direction is characterized in that:

This heat pipe type composite parabolic heat collector comprises a plurality of pipe type composite parabolic heat light-condensing and heat-collecting devices (1), heat exchange box (2) and plurality of fixed support (3);

The heat-exchange end of pipe type composite parabolic heat light-condensing and heat-collecting device (1) is connected with heat exchange box (2), the thing both sides that are distributed in heat exchange box (2) of a plurality of pipe type composite parabolic heat light-condensing and heat-collecting devices (1) symmetry; The direction on the long limit of heat exchange box (2) is that positive north deflection goes up certain angle; The direction on the long limit of the axial and heat exchange box (2) of pipe type composite parabolic heat light-condensing and heat-collecting device (1) is vertical, and the end that pipe type composite parabolic heat light-condensing and heat-collecting device (1) contacts with heat exchange box (2) exceeds certain distance than the other end of this device, to satisfy the normal operation of heat pipe; Plurality of fixed support (3) is connected with pipe type composite parabolic heat light-condensing and heat-collecting device (1) and heat exchange box (2), is used for supporting and fixedly pipe type composite parabolic heat light-condensing and heat-collecting device (1) and heat exchange box (2).

2. the heat pipe type composite parabolic heat collector that East and West direction according to claim 1 is placed is characterized in that: pipe type composite parabolic heat light-condensing and heat-collecting device (1) comprises glass tube (1-3), is positioned at glass tube (1-3) inner heat pipe (1-1) and composite parabolic solar panel (1-2); Between heat pipe (1-1) and the glass tube (1-3) is vacuum; Composite parabolic solar panel (1-2) is installed in the outside of glass tube (1-3), the slit is arranged between composite parabolic solar panel (1-2) and the glass tube (1-3) and glass tube (1-3) semi-surrounding is lived.

3. the heat pipe type composite parabolic heat collector that East and West direction according to claim 1 is placed is characterized in that: pipe type composite parabolic heat light-gathering heat collection pipe (1) comprises glass tube (1-3), is positioned at glass tube (1-3) inner heat pipe (1-1) and composite parabolic solar panel (1-2); Between heat pipe (1-1) and the glass tube (1-3) is vacuum; Composite parabolic solar panel (1-2) is installed in this vacuum and with glass tube (1-3) and contacts, and the slit is arranged between composite parabolic solar panel (1-2) and the heat pipe (1-1) and heat pipe (1-1) semi-surrounding is lived.

4. the heat pipe type composite parabolic heat collector that East and West direction according to claim 1 is placed is characterized in that: fixed support (3) adopts the support that can regulate height, can change the long limit of heat exchange box (2) and the angle on ground by regulating this support.

5. according to the heat pipe type composite parabolic heat collector of claim 2 or 3 described East and West directions placements, it is characterized in that: heat exchange box (2) contains polyurethane insulation coating, and composite parabolic solar panel (1-2) adopts aluminium sheet, and glass tube (1-3) adopts high-boron-silicon glass.

6. according to the heat pipe type composite parabolic heat collector of claim 2 or 3 described East and West directions placements, it is characterized in that: the scope that the optically focused of composite parabolic solar panel (1-2) receives half-angle is 15 °-75 °.

7. the heat pipe type composite parabolic heat collector that East and West direction according to claim 1 is placed is characterized in that: the direction on the long limit of heat exchange box (2) goes up certain angle for positive north deflection, the scope of this angle be local latitude ± 30 spend.

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