CN1316633A

CN1316633A - Solar energy absorbing surface with conic slots aggregation

Info

Publication number: CN1316633A
Application number: CN01116707A
Authority: CN
Inventors: 叶孙础
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-04-19
Filing date: 2001-04-19
Publication date: 2001-10-10

Abstract

A heat absorption surface with cone type ditches for solar energy can convert the solar light immediately into collecting solar energy heat. Its surface facing to incoming light made into a collecting ditch shape can abosrb the diffusing energy several times. The media to be heated will be arranged in the high temperature zone of the plate core to shorten the distance between the high temperature zone of heating collector and the media heat conduction. It can be used as heating absorption surface for many kinds of solar energy heating collectors since is can absorb immediately the heat converted from solar energy and can reduce the loss by the supperheating to ensure the heat efficiency of the heat collector.

Description

Solar energy absorbing surface with conic slots aggregation

The invention belongs to new energy technology, it has related to and a kind ofly can be immediately sunshine have been converted to the conic slots aggregation heat sink that the solar energy heating of available heat is used; Especially the heat collector surface structure that can efficiently absorb heat.

The energy is the important substance basis of development national economy, provides the motive power of material production and life, and demand sharply increases.In the past 100 years, human to the energy research and use from the single structure of fossil fuels such as coal, oil, develop into based on fossil energy, the diversification general layout of other energy complementations is slowed down this state of emergency with this; Fossil can resource be that our " home " earth accumulates through tens years slow growth process, non-renewable reserved resources, and resource will dug exhaustion in the very of short duration time, abuse this reserved resources simultaneously, can bring huge pollution to the earth, and let alone satisfy the environmental quality demand of increasingly stringent, these factors all impel people to pay attention to seeking clean and new forms of energy sustainable use more.Heliotechnics has obtained considerable progress in recent years, produced diversified solar thermal collector in the past few decades, as: vacuum tube, closing-sunning type comprise honeycombed, and heat collector such as tube-sheet type, because vacuum tube cost height and complex process are for example: should increase design reflectivity plate etc. in order to reduce by two vacuum tube gap losses, accommodation be subjected to certain limitation as: just solar boiler, wall heat collector use honeycombed, tube-sheet type etc.; On collection flat heat, increase honeycombed as everybody knows and do not increase the thermal efficiency; Because it has only increased the order of reflection of light, but it has reduced the amount that first effectively luminous energy arrives the effective district of heat collector.Sunshine converts heat to and the time will allow the medium in the heat collector take away this heat immediately as everybody knows, could reduce convection current and the conduction to external world of diffuse radiation and heat, because it is to have increased honeycombed on thermal-arrest plate top, therefore it does not suppress the heat loss at top, increases the heat loss at top on the contrary; And it has only increased saturation temperature.Its efficient of copper aluminum composite belt at present common in tube-sheet type is not high, be because; The heat that obtains on the band wing can not immediately be taken away by medium, thereby has improved the temperature at band wing edge, has increased convection current and the conduction to external world of diffuse radiation and heat.The pyroconductivity of general heat pipe is the hundred times of copper as everybody knows, thereby is very terrible in the loss of edge heat of the band wing.

The purpose of this invention is to provide a kind of, can convert sunshine to the solar energy absorbing surface with conic slots aggregation of available heat immediately, it is when effectively receiving sunshine, can also increase the reception number of times of light, absorb the diffusion energy, sunshine is converted to effective heat, reduce heat loss to ensure the high efficiency of heat collector.

The present invention is daylighting face (heat-absorbent surface) plate core, makes the gathering channel shaped side to light of band point, for example: cherry rifle shape or other optically focused flute profile; The point of cherry rifle is upwards formed the conic slots aggregation side to light, and side to light is towards identical with conventional heat collector; Since its face be not the plane but the conical surface (inclined-plane), therefore the inside not parallel light probability that receives is high, can receive repeatedly reflection ray and absorb the diffusion energy; Thereby can gather effective photo-thermal transition region to diffused ray, and the bottom (bottom) of the poly-awl of heat-absorbent surface ditch; At the gathering ditch shape plate in-core of band point, be connected with the medium that needs heating, so it can immediately take away heat, reduce the top heat loss and ensure the heat collector thermal efficiency.

Because its face is not the plane, can converts sunshine available heat to, can receive repeatedly reflection ray absorption diffusion energy immediately; Because it is not pipe, bar, belt shape, must not set up reflecting plate, there is not the light loss of walking; Thereby can reduce heat loss, applicable multiple heat collector range of application wide, can carry fast (early) and heat up, can improve serviceability temperature; Simultaneously compare with vacuum tube and can reduce cost with honeycombed.

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1: be cherry rifle shape heat-absorbent surface schematic cross-section of the present invention.

Fig. 2: be conventional honeycombed heat-absorbent surface schematic diagram.

Fig. 3: be conventional tube-sheet type composite band schematic cross-section.

Fig. 4: be optically focused trough plate core schematic cross-section of the present invention.

In the drawings: 1 medium, 2 high-temperature regions, 3 light, 4 base plates, 5 cavitys.

In Fig. 1, find out, of the present invention need heat medium (1) be to be placed in the regional extent of high-temperature region (2), again by conventional honeycombed heat-absorbent surface schematic diagram of Fig. 2 and the conventional tube-sheet type composite band of Fig. 3 schematic cross-section, in, find out that medium (1) and high-temperature region (2) distance are distant, so the heat loss of high-temperature region is relatively more outstanding.This: shortening heat conduction distance is one of technological means of the present invention.The needs that next just can reach different environments for use and different temperatures as the angle and the distance between the two cherry rifles of change cherry rifle; But the distance of general L is controlled at about 1/10 to 3/10 of H, and the distance that strengthens L can reduce use high temperature comparatively speaking; But can reduce material reduces cost.

In Fig. 4 optically focused trough plate core sectional view, can see, when light (3) incides the poly-tapered slope of both not parallel also off plumb, the reflection of light light path can learn that its receivable inside not parallel light probability is high, can receive repeatedly reflection ray and absorb the diffusion energy; And when receiving parallel rays or not parallel light, first effectively illumination can both be mapped on the effective zone.See by the conventional honeycombed heat-absorbent surface of Fig. 2 that again vertical deployments with heat-conducting plate of honeybee lattice wall effectively only received by honeybee lattice wall for the first time when receiving not parallel light, do not shine than on the effective zone; Almost there is not the absorption of secondary reflection light when receiving vertical light; Fig. 3 more not than because it: do not receive secondary reflection light, so heat loss is more terrible; This: can repeatedly absorb the diffusion energy also is one of technological means of the present invention; This can see in Fig. 1 cherry rifle shape heat-absorbent surface equally.

Fig. 4 A is universal heat-absorbent surface; Fig. 4 B is the high temperature modification heat-absorbent surface.

Fig. 4 A1 can be used as conventional collector plate core, also can be directly as multi-barrel (many barrel shapes) water heater.Fig. 4 A2 only has heat medium on heat-absorbent surface top because it has set up cavity (5) in the heat-absorbent surface bottom, has reduced heat medium and has promptly improved medium temperature; It can be used as the heat collector of high latitude area, or as conventional boiler plate core.

It is adapted to winter especially with heat collector or as conventional boiler plate core Fig. 4 B1.Fig. 4 B2 it on Fig. 4 B1 basis, set up cavity (5), reduced heat medium and improved medium temperature; It is specially adapted to boiler and needs higher temperature De Bamboo boiler, desalinization etc.

After the production method available metal plate of this heat-absorbent surface is rolling, carry out the end socket explained hereafter, also can be made into separable base plate formula plate core: existing metal tube is pressed into cherry rifle shape or triangle, and device is on base plate (4); Because the unusual α of environment for use is between 15 to 90 degree; The connected mode of tube head can be with reference to tube-sheet type.Just can reduce heat loss as making white at this heat-absorbent surface top (tip).

The solar energy heat absorbing face of above structure can produce the highest heat collector of the present thermal efficiency, can be and suit measures to local conditions, and development and use solar energy is created better condition.

Claims

1. solar energy absorbing surface with conic slots aggregation, it is made up of side to light and base plate, it is characterized in that: its cross section is cherry rifle shape or optically focused flute profile.

2, solar energy absorbing surface with conic slots aggregation according to claim 1 is characterized in that: can set up cavity (5) in the cross section of cherry rifle shape or optically focused flute profile.