CN102084773B

CN102084773B - Method for acquiring solar energy and planting grass and trees by using sunny slope of sand dunes

Info

Publication number: CN102084773B
Application number: CN2010105412955A
Authority: CN
Inventors: 张忠东
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-11-03
Filing date: 2010-11-03
Publication date: 2013-02-20
Anticipated expiration: 2030-11-03
Also published as: CN102084773A

Abstract

The invention relates to a method for acquiring solar energy and planting grass and trees by using a sunny slope of sand dunes, which is characterized by comprising the steps of: finishing the sunny slope at a concave part among sand dunes to ensure that the radian of the sunny slope accords with the parabola focused condition of a concave mirror, laying a reflection film on the sunny slope, interweaving and laying a roll material of the reflection film to be of a grid shape, firmly fixing the peripheral edge of the reflection film with the sand, remaining grid sand between transverse and vertical reflection film strips, planting plants suitable for planting in the desert on exposed sand grids, installing solar thermal collectors on an optical radiation focusing point and a focusing surface which are formed by the lighting reflection of the reflection film, and installing a vapor generating set near the solar thermal collectors. Compared with the larger wind power generation system and the traditional solar utilization device, the invention has the advantages of high performance cost, large electric energy production, variable scale, strong operability and the like, and more integrates the comprehensive function of planting grass and trees.

Description

A kind of method of utilizing the sand dune sunny slope to gather solar energy and plantation vegetation

Technical field

The present invention relates to a kind of method, solar energy and comprehensive desert control technical field of utilizing the sand dune sunny slope to gather solar energy and plantation vegetation.

Background technology

The lot of materials of countries in the world scientists study shows, this very valuable resource of soil is being faced with the threat of desertization, China also has 13 provinces and regions at present, 33.4 being subject to desertization, ten thousand square kilometres soil threatens, the Northwest particularly, the desertification area is far longer than the area of artificial improvement.According to statistics, the soil of desert and desertization has accounted for 13.3% of China's land area.But also enlarging day by day.The domestic desert of China is the middle latitude desert, also cries cold desert, and climatic characteristic is: the first, and rainfall is rare, drought; The second, windy and dusty; The 3rd, winter is cold, and summer is extremely hot, and the annual amplitude of temperature and amplitude of diurnal variation are all very large.This climatic characteristic adds the human backward production of running counter to the natural law that forms over the past thousands of years, is the principal element that causes this environmental aspect.Sandstorm takes place frequently, and the drift sand wildness spreads, even husky advance the people and move back to become and do not allow the realistic problem of avoiding.Sand dune people life can not get basic assurance, no matter more get rich by sand, returns home and has set up one's own business.Although existing sand control mode has obtained certain effect, it is single that method has, and taking effect of having is few, and the cycle is long, and what also have is too large because investing, and bears take family as the production of units somatasthenia, so can't spread.

Summary of the invention

The purpose of this invention is to provide a kind of physical geography of utilizing husky district, illumination condition and matrix parabolic reflector focusing principle, gather solar electrical energy generation, the sand dune sunny slope that utilizes of planting simultaneously vegetation gathers the method for solar energy and plantation vegetation, this method large-scale wind generating of comparing, and traditional solar energy utilization, has cost performance high, generated energy is large, scale is changeable, the advantages such as strong operability, the comprehensive function of more planting with vegetation, and then changing husky district people's life style, identity is also by the herdsman, the peasant is replaced into the tree people, vulgar people and the electric people generate electricity with the draft planting guarantee, with the expansion of generating profit back feeding vegetation area, form generating and fix the sand to circulate benignly.

Method of the present invention is: the sand dune sunny slope and extend downward lowland and be trimmed to huge solar cooker, that is: repairing to tailo the depression position between unbroken sand dune, make its radian meet concave mirror parabola focused condition, lay the solar cooker reflective membrane thereon, the light radiation focus point that the reflective membrane daylighting of completing reflects to form, focusing surface, should be lower than the line of lowland south and north flanks sand dune peak, the reflective membrane coiled strip by longitude and latitude interweave be laid to latticed, the peripheral edge of reflective membrane and sand ground fixation, horizontal, leave the space sand ground between perpendicular reflective membrane bar, the suitable desert growing plant of sand ground space plantation that is exposing, and the height after the psammophytes of cultivating is bred, do not stop reflective membrane daylighting, lay reflex film sand dune, north side plantation trees; The solar thermal collector that is used for absorbing reverberation heat energy is installed in the light radiation focus point that reflects to form in reflective membrane daylighting, the position of focusing surface, the steam-electric power unit is installed near solar thermal collector, and the vapours that produces with solar thermal collector drives the generating set generating.

Advantage of the present invention is: the physical geography of utilizing husky district, illumination condition and matrix parabolic reflector focusing principle, gather solar electrical energy generation, plant simultaneously vegetation, the large-scale wind generating of comparing, and traditional solar energy utilization have cost performance high, generated energy is large, scale is changeable, the advantages such as strong operability, the comprehensive function of more planting with vegetation.

Description of drawings

Fig. 1 is that reflective membrane of the present invention is laid schematic diagram; Among the figure: sand dune, 1-north side, 2-trees, 3--jackstay, 4--Achnatherum inebrians, 5--reflective membrane, 6--solar thermal collector, 7-generating set, sand dune, 8-southern side.

Embodiment

Embodiment:

In annual the end of spring and the beginning of summer, wind-force reduces, between unbroken sand dune select some depressions darker when gradually growing sunshine, and south and north flanks is higher, middle camber ratio meets the lowland of concave mirror parabola focused condition, to tailo, as the laying point of solar cooker reflective membrane, low to reach standard not in full conformity with the high pad of condition place shovel, part has the block of large tracts of land development potentiality, movably rebuild with engineering machinery, to reach the in flakes purpose of generating.First-selectedly for meeting integrated condition, and the desert edge place near cities and towns, be beneficial to the stringing transmission of electricity, then progressively Xiang Sha district depth advances, complete the light radiation focus point that reflective membrane daylighting reflects to form at selected lowland to tailo, focusing surface, should be lower than the line of lowland south and north flanks sand dune peak, the concrete area of laying is subjected to the sand dune height, the face limitation in height, exceed the focus point absorption region then there is no need lay, selecting of reflective membrane will be noted high reflecting rate high strength and ageing resistance, and the adult tramples not damaged for well, the reflective membrane coiled strip by longitude and latitude interweave be laid to latticed, no matter anyhow, every row reflective membrane keeps the interval, the suitable desert growing plant of sand ground space plantation that exposes in the centre, the space is reserved the height after size can be bred according to the psammophytes of cultivating and is decided, not stop that reflective membrane daylighting is as the criterion, the sandy soil of digging of digging pit in the planting process, press pendulum at the peripheral edge of reflective membrane, wind is distinguished strongly, available salix monogolica volume groined type sand-protecting barrier in flakes contraposition covers pressure rear shovel soil pile things on, the place, sand pit remains for accepting the breach of rainwater in advance, like this when utilizing limited rainfall, prevented that also high wind from starting reflective membrane, the reflective membrane that covers has also played the effect of the maintenance moisture of mulch film.

After the reflection optical mode is completed, can set up jackstay, purpose is the solar thermal collector that is fixed for absorbing reverberation heat energy, and jackstay connects south and north flanks sand dune peak spacing.Measure reflective membrane focus point position in the jackstay stage casing, the solar heat device is installed, the steam-electric power unit is installed near solar thermal collector.Medium is housed in the solar thermal collector, and heat collector absorbs reflective radiation makes the medium evaporation, produces high temperature, high steam, and this high-temperature steam enters the heat engine of generating set.Plant the psammophytes of the anti-sand of some drought resistings in ridge position, sand dune, north side, such as Sabina vulgaris, narrow-leaved oleaster etc., built the sand prevention barrier one by spreading reflective membrane.In areas of serious, the willow greenbrier of selecting sand dune special product salix monogolica to be woven into, vertical pile things on becomes the wattled wall shape along ridge.

Between reflective membrane the first-selected Achnatherum inebrians of the psammophytes of planting, because its survival ability is apparently higher than other psammophytes, Ceng Yinqi toxicity is misread, rooted out but not exhausted by artificial large tracts of land, this grass of choosing seeds, fixing the sand in the cuticula, also contribute for the greening of husky district, because of its toxicity, avoided the plague of insects plague of rats again, livestock also fear the poison away from, in recent years by test, Achnatherum inebrians is become evil has two approach into benefit, and the one, Direct-fed after the weak hydrochloric acid soaked for detoxification, the 2nd, common forage grass adds the dried Achnatherum inebrians of 40% (weight), replace feeding according to 15 days intervals and common forage grass, the leaf of the described plantation of yamase place on the sunny side of this law arrow-leaved oleaster, because of its nutrition fully near quality alfalfa, can select as mixing forage grass, like this, with the change of forage grass structure, promoted the formation of the such scientific mode of livestock stable breeding, power-assisted sand control cause is from successfully moving towards more ten-strike.

Claims

1. one kind is utilized the sand dune sunny slope to gather solar energy and the method for planting vegetation, it is characterized in that: the sand dune sunny slope and extend downward lowland and be trimmed to huge solar cooker, that is: repairing to tailo the depression position between unbroken sand dune, make its radian meet concave mirror parabola focused condition, lay the solar cooker reflective membrane thereon, the light radiation focus point that the reflective membrane daylighting of completing reflects to form, focusing surface, should be lower than the line of lowland south and north flanks sand dune peak, the reflective membrane coiled strip by longitude and latitude interweave be laid to latticed, the peripheral edge of reflective membrane and sand ground fixation, horizontal, leave the space sand ground between perpendicular reflective membrane bar, the suitable desert growing plant of sand ground space plantation that is exposing, and the height after the psammophytes of cultivating is bred does not stop reflective membrane daylighting, lay reflex film sand dune, north side plantation trees; The solar thermal collector that is used for absorbing reverberation heat energy is installed in the light radiation focus point that reflects to form in reflective membrane daylighting, the position of focusing surface, the steam-electric power unit is installed near solar thermal collector, and the vapours that produces with solar thermal collector drives the generating set generating.