CN100547184C - Photovoltaic passive heating wall - Google Patents

Photovoltaic passive heating wall Download PDF

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Publication number
CN100547184C
CN100547184C CNB200610114392XA CN200610114392A CN100547184C CN 100547184 C CN100547184 C CN 100547184C CN B200610114392X A CNB200610114392X A CN B200610114392XA CN 200610114392 A CN200610114392 A CN 200610114392A CN 100547184 C CN100547184 C CN 100547184C
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CN
China
Prior art keywords
photovoltaic
arrest
thermal
air flow
flow channel
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CNB200610114392XA
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Chinese (zh)
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CN1944829A (en
Inventor
季杰
易桦
何伟
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中国科学技术大学
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Priority to CNB200610114392XA priority Critical patent/CN100547184C/en
Publication of CN1944829A publication Critical patent/CN1944829A/en
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Publication of CN100547184C publication Critical patent/CN100547184C/en

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Abstract

Photovoltaic passive heating wall comprises: the glass plate of photovoltaic cell has been pasted at the back, two winter ventilation mouths, two summer ventilation opening, the thermal-arrest wall, be used to quicken the dc fan of air flow channel in the air flow channel, the photovoltaic glass plate is installed on the framework that is parallel to the thermal-arrest wall, and two winter ventilation mouths are at the top and the bottom of thermal-arrest wall opening, two summer ventilation opening at the top and the bottom of air flow channel opening, dc fan is installed in winter ventilation mouth or the air flow channel.The present invention has at the back side of the glass plate of traditional passive heating wall system and sticks photovoltaic cell, walk the heat of photovoltaic battery surface by the air fluxion strap in the air flow channel between glass plate and the body of wall, reduce battery temperature, improve cell power generation efficient, not only have generating and heating function, and make architectural appearance more charming.

Description

Photovoltaic passive heating wall
Technical field
The present invention relates to a kind of photovoltaic and photothermal architecture-integral (BIPV/T) device that is used for passive solar house, belong to field of solar energy utilization.
Background technology
The finiteness of conventional energy resource resource and the increase of environment stress make many in the world countries strengthen support to the new and renewable sources of energy technical development again.Solar energy is a kind of cleaning, efficiently and never depleted new forms of energy, so national governments are all with the important content of solar energy resources utilization as the national sustainable development strategy.In the existing solar utilization technique, the many of employing is that passive type solar energy heating technology, solar water utilize technology and photovoltaic power generation technology.Wherein, the passive heating wall in the passive type solar energy heating technology (Trombe wall) has simple in structure, and the efficient height need not advantages such as standing charges, has obtained using widely and having had a lot of improvement projects in the past few decades.China's passive solar house development is very fast, according to incomplete statistics in 1993, promoted 5,000,000 square metres, mainly be distributed in rural areas, ground such as Hebei, Liaoning, Gansu, the Inner Mongol, Qinghai and Tibet, every square metre of existed building area can be saved the 20-40kg standard coal in the heating phase.Later in buildings such as the dwelling house in many cities and towns, school, obtain popularization again, obtained significant social, economic benefit.By to the end of the year 2000, add up to build up more than 1,000 ten thousand square metres of solar energy housings.But the thermal-arrest wall external surface of traditional passive heating wall is blacking, and what cause thus has influenced its promotion and application not attractive in appearance greatly.At present, similarly single solar thermal utilization patent of some and passive heating wall construction is arranged at home, a kind of windowsill type solar heating device is disclosed as CN96246221.7, CN200420015805.5 discloses a kind of solar heating device, and CN200420069762.9 discloses a kind of wall body construction formula solar space heating facility and CN02121378.X discloses a kind of solar space heating facility.
And for photovoltaic power generation technology, the solar energy that shines the photovoltaic cell surface is not converted into electric energy more than 80%, but be converted into heat energy, and battery temperature is raise, cause battery efficiency to descend, if the back side at photovoltaic cell component, lay runner, by the fluid removal heat, when obtaining electric energy, can make full use of that part of solar energy that does not change into electric energy again, improve the comprehensive utilization ratio of energy.
Though patent CN03117401.9 (photovoltaic solar heating device) has utilized photovoltaic and passive heating wall technology simultaneously, but this patent only covers on the solar air heat collection plate with the fritter photovoltaic cell and is used to drive blower fan in the matching air box, it is the utilization respectively of two kinds of technology, both are not mutually combined, learn from other's strong points to offset one's weaknesses.
Summary of the invention
Technology of the present invention is dealt with problems: overcome the deficiencies in the prior art, a kind of photovoltaic passive heating wall is proposed, it sticks photovoltaic cell at the back side of the glass plate of traditional passive heating wall system, walk the heat of photovoltaic battery surface by the air fluxion strap in the air flow channel between glass plate and the body of wall, reduce battery temperature, improve cell power generation efficient, not only have generating and heating function, and make architectural appearance more charming.
Technical solution of the present invention: photovoltaic passive heating wall, its characteristics are: the glass plate of having been pasted photovoltaic cell by the back, two winter ventilation mouths, two summer ventilation opening, the thermal-arrest wall, the roller shutter composition that is used to quicken the dc fan of air flow channel in the air flow channel and is used to block the thermal-arrest wall, the photovoltaic glass plate is installed on the framework that is parallel to the thermal-arrest wall, two winter ventilation mouths are at the top and the bottom of thermal-arrest wall opening, two summer ventilation opening at the top and the bottom of air flow channel opening, dc fan is installed in winter ventilation mouth or the air flow channel.
Principle of the present invention is: the interior thermosyphon action of air flow channel of utilizing the heat absorption of thermal-arrest wall and photovoltaic glass plate to cause, the air that drives in the air flow channel flows from the bottom up, gives the indoor heating that provides winter thereby be implemented in, and reduces indoor heat requirement in summer.
The structure of described photovoltaic glass plate is as follows: be coated with in the photovoltaic cell both sides with polyethylene vinyl acetate ester EVA (Ethyl Vinyl Acetate), the positive lower iron glass (iron-holder is lower than 0.02%) of high permeability that covers with transmitance>0.9, the back side covers with transparent compound fluoroplastics film (TPT, TedlarPolyester Tedlar), place vacuum laminator laminated into type at last.
The thickness of described polyethylene vinyl acetate ester EVA is 0.3~0.8mm.
The gross thickness of transparent compound fluoroplastics film is 0.1~0.3mm.
The present invention's advantage compared with prior art is: the photovoltaic passive heating wall device that the present invention proposes, not only can make full use of limited building area, the electric energy that produces with photovoltaic cell in building various electrical appliances power supplies or electric power is provided for the electrical network that is incorporated into the power networks, and indoor heating can be provided in the winter time and reduce indoor heat requirement in summer, and it is simple in structure, manufacturing and easy for installation, more attractive in appearance has great application prospect.By test result of the present invention is shown: in the winter time, the indoor maximum temperature of the hot case of test of band photovoltaic passive heating wall is basically all more than 20 ℃, can reach more than 20 ℃ with the maximum temperature difference of environment temperature, with no photovoltaic passive heating wall can reach 7 ℃ to specific heat case maximum temperature difference, per day generating efficiency 〉=10% (polycrystal silicon cell).The present invention can annually use, and its investment is little, the life-span long, high efficiency.
Description of drawings
Fig. 1 structural representation of the present invention;
Fig. 2 is the production process charts of photovoltaic glass plate of the present invention.
The specific embodiment
As shown in Figure 1, the present invention has been pasted the glass plate 3 of photovoltaic cell by the back, winter ventilation mouth 6 and 7, summer, ventilation opening 8 and 9, thermal-arrest wall 11, roller shutter 13 compositions that are used to quicken the dc fan 10 of air flow channel in the air flow channel 12 and are used to block the thermal-arrest wall, photovoltaic glass plate 3 is installed on the framework that is parallel to thermal-arrest wall 11, with the distance of thermal-arrest wall be 10-20cm, winter ventilation mouth 6 is in the upper shed of thermal-arrest wall, winter ventilation mouth 7 is in the upper shed of thermal-arrest wall, summer, ventilation opening 8 was at the upper opening of air flow channel, summer, ventilation opening 9 was at the upper opening of air flow channel, and dc fan 10 can be installed in the winter ventilation mouth 6, or in the winter ventilation mouth 7 or air flow channels 12 (interior for being installed in winter ventilation mouth 6 among the figure of the present invention).
As shown in Figure 2, be coated with EVA2 in photovoltaic cell 1 both sides, thickness is advisable with 0.3~0.8mm, positive again the covering with the low iron glass 3 of high permeability, and the back side covers with TPT 4, places vacuum laminator laminated into type integral body again.
Photovoltaic cell 1 can be according to the size of photovoltaic cell coverage scale, the size of photovoltaic cell and the requirement of design for aesthetic, the employing grid type distributes, thermal-arrest wall 11 external surfaces are coated with pitch-dark with high-absorbility, better absorb solar radiation, can connect with filamentary silver between each photovoltaic cell 1, specious.
The course of work of the present invention:
Solar photoelectric utilizes part: photovoltaic cell 1 generating be transported to inverter, indoor electrical equipment or electrical network through electric power output 5, and heating season drives dc fan 10 in the winter time.
Solar energy heat utilization part:
(1) heating season in the winter time
Uptake 6 and following air port 7 are opened, summer, ventilation opening 8 and 9 was closed, passive heating wall and indoor room constitute a path, bring into the heat of thermal-arrest wall 11 and photovoltaic cell 1 absorption indoor, dc fan 10 is driven by the electricity that photovoltaic cell 1 sends simultaneously, strengthens the heat exchange of passive heating wall and indoor room.
(2) ventilate season in summer
Winter ventilation mouth 6 and 7 is closed, and ventilation opening 8 and 9 was closed and was opened summer, and passive heating wall and outdoor air constitute a path, and the heat that thermal-arrest wall 11 and photovoltaic cell 1 are absorbed is discharged to outdoor.Roller shutter 13 can block thermal-arrest wall 11 simultaneously, further reduces indoor heat requirement.

Claims (6)

1, photovoltaic passive heating wall, it is characterized in that it comprises: the glass plate of photovoltaic cell has been pasted at the back, two winter ventilation mouths, two summer ventilation opening, the thermal-arrest wall is used to quicken the dc fan of air flow channel in the air flow channel, the photovoltaic glass plate is installed on the framework that is parallel to the thermal-arrest wall, two winter ventilation mouths are at the top and the bottom of thermal-arrest wall opening, two summer ventilation opening at the top and the bottom of air flow channel opening, dc fan is installed in winter ventilation mouth or the air flow channel; Distance between described photovoltaic glass plate and the thermal-arrest wall is 10-20cm; The structure of described photovoltaic glass plate is: is coated with the polyethylene vinyl acetate ester in the photovoltaic cell both sides, and the positive low iron glass of high permeability that covers with transmitance>0.9, the back side covers with transparent compound fluoroplastics film, places vacuum laminator laminated into type at last.
2, photovoltaic passive heating wall according to claim 1 is characterized in that: also be added with roller shutter outside described thermal-arrest wall, be used to block the thermal-arrest wall, further reduce indoor heat requirement.
3, photovoltaic passive heating wall according to claim 1 is characterized in that: the thickness of described polyethylene vinyl acetate ester is 0.3~0.8mm.
4, photovoltaic passive heating wall according to claim 1 is characterized in that: the gross thickness of described transparent compound fluoroplastics film is 0.1~0.3mm.
5, photovoltaic passive heating wall according to claim 1 is characterized in that: described photovoltaic cell (1) adopts grid type to distribute.
6, photovoltaic passive heating wall according to claim 1 is characterized in that: described thermal-arrest wall (11) external surface is coated with pitch-dark with high-absorbility, better absorbs solar radiation.
CNB200610114392XA 2006-11-09 2006-11-09 Photovoltaic passive heating wall CN100547184C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB200610114392XA CN100547184C (en) 2006-11-09 2006-11-09 Photovoltaic passive heating wall

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB200610114392XA CN100547184C (en) 2006-11-09 2006-11-09 Photovoltaic passive heating wall

Publications (2)

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CN1944829A CN1944829A (en) 2007-04-11
CN100547184C true CN100547184C (en) 2009-10-07

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