JP2000055479A - Solar photovoltaic generation water heater - Google Patents
Solar photovoltaic generation water heaterInfo
- Publication number
- JP2000055479A JP2000055479A JP10241120A JP24112098A JP2000055479A JP 2000055479 A JP2000055479 A JP 2000055479A JP 10241120 A JP10241120 A JP 10241120A JP 24112098 A JP24112098 A JP 24112098A JP 2000055479 A JP2000055479 A JP 2000055479A
- Authority
- JP
- Japan
- Prior art keywords
- water
- solar cell
- cell panel
- tank
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、太陽光エネルギー
を効率よく電気エネルギーと熱エネルギーへ変換できる
太陽光発電温水装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photovoltaic water heater that can efficiently convert sunlight energy into electric energy and heat energy.
【０００２】[0002]
【従来の技術】従来、太陽光エネルギーの利用装置とし
ては、太陽光エネルギーで水を加熱して温水にかえて温
水タンクに貯えて、浴槽水・台所水等に利用する太陽熱
温水器と、太陽光エネルギーを太陽電池パネルで電気エ
ネルギーに換え、蓄電池に貯えて利用する太陽電池パネ
ル装置が知られている。しかしながら、従来の太陽熱温
水装置は、温水にして利用するもので、その利用方法が
狭いものであり、又大気の温度が低いときは使用できな
い場合が生じている。一方従来の太陽電池パネル装置は
太陽電池パネルが太陽光を受けて高温になるとエネルギ
ー変換効率が低下するものであった。太陽電池パネル
（セル）の温度特性は、出力電圧が１２Ｖ程までは定電
流に近く、太陽電池パネルの温度（２５〜７０℃）によ
る変動は少ないが、開放電圧、最大出力動作電圧に近
い、高電圧帯ではその出力動作電圧が高温となると大巾
に低下し、太陽電池パネルとしての起電力性能が低下す
る。2. Description of the Related Art Conventionally, as a solar energy utilizing apparatus, a solar water heater for heating water with solar energy and storing it in a hot water tank instead of hot water and using it for bathtub water, kitchen water, etc. 2. Description of the Related Art There is known a solar cell panel device that converts light energy into electric energy by using a solar cell panel and uses the stored energy in a storage battery. However, the conventional solar water heater uses hot water, and the method of use is narrow. In some cases, it cannot be used when the temperature of the atmosphere is low. On the other hand, in the conventional solar cell panel device, when the solar cell panel receives sunlight and becomes high in temperature, the energy conversion efficiency decreases. The temperature characteristics of the solar cell panel (cell) are close to the constant current until the output voltage is about 12 V, and the fluctuation due to the temperature of the solar cell panel (25 to 70 ° C.) is small, but is close to the open-circuit voltage and the maximum output operation voltage. In a high voltage band, when the output operation voltage becomes high, the voltage greatly decreases, and the electromotive force performance as a solar cell panel is reduced.
【０００３】[0003]
【発明が解決しようとする課題】本発明が解決しようと
する課題は、従来のこれらの問題点を解消し、高温によ
る性能低下がないようにして太陽電池パネルのエネルギ
ー変換効率を高めながら、温水としての熱エネルギー
と、電気エネルギー両方の形態でエネルギー変換でき、
高効率の太陽光発電温水装置を提供することにある。SUMMARY OF THE INVENTION The problem to be solved by the present invention is to solve these problems of the prior art and to improve the energy conversion efficiency of the solar cell panel while preventing the performance from deteriorating due to high temperature. Energy can be converted in the form of both thermal energy and electrical energy,
An object of the present invention is to provide a high-efficiency solar water heating device.
【０００４】[0004]
【課題を解決するための手段】かかる課題を解決した本
発明の構成は、 １） 太陽電池パネルの表面に太陽光が透過できる透明
体を設け、同透明体を底面とする水を貯える貯水部を形
成し、同貯水部に水を供給する冷水補給タンクと、同貯
水部で加温された水を取り込んで貯える温水タンクとを
設け、貯水部の水で太陽電池パネルを冷却しながら同時
に温水を生成することを特徴とする太陽光発電温水装置 ２） 太陽電池パネルの出力を充電回路で蓄電池に蓄電
し、同蓄電池の電源を用いて温水タンクの温水を加熱す
る電気温水器を設けた前記１）記載の太陽光発電温水装
置 ３） 太陽電池パネルと貯水部とを傾け、貯水部に水を
供給する冷水補給タンクを貯水部より高い位置に配置
し、且つ水導入口を貯水部の低い位置に設け、又温水タ
ンクを貯水部より低い位置に設け、しかも貯水部の高い
位置に温水吐出口を設け、水頭差と温度差で貯水部の水
が冷水補充タンクから温水タンクへ流れるようにした前
記１）又は２）記載の太陽光発電温水装置 ４） 太陽電池パネルの出力を充電回路で蓄電池に蓄電
し、同蓄電池の電力を用いて温水タンクの温水を加熱す
る電気温水器を設け、しかも蓄電池の電源を交流にする
ＤＣ／ＡＣインバータを設け、同ＤＣ／ＡＣインバータ
の交流電力と商用電源の交流電力とを切換えて負荷に給
電する切換器を設け、更に同切換器を介して給電される
商用電源の交流電力を電気温水器にも給電できるように
した前記１）又は３）記載の太陽光発電温水装置にあ
る。Means for Solving the Problems The structure of the present invention which has solved the above problems is as follows: 1) A transparent body through which sunlight can pass is provided on the surface of a solar cell panel, and a water storage section having the transparent body as a bottom surface for storing water. And a cold water supply tank that supplies water to the water storage section, and a hot water tank that takes in and stores the water heated in the water storage section. 2) The electric water heater that stores the output of the solar cell panel in a storage battery by a charging circuit and heats the hot water in a hot water tank using the power supply of the storage battery. 1) The photovoltaic water heater described in 3) 3) The solar cell panel and the water storage unit are tilted, the cold water replenishment tank that supplies water to the water storage unit is located at a higher position than the water storage unit, and the water inlet is lower than the water storage unit. Position and also a hot water tank The above 1) or 2), wherein the hot water discharge port is provided at a position lower than the water storage section, and a hot water discharge port is provided at a high position of the water storage section, so that water in the water storage section flows from the cold water replenishment tank to the hot water tank by a head difference and a temperature difference. 4) A water heater for solar power generation 4) The output of a solar panel is stored in a storage battery by a charging circuit, an electric water heater is used to heat the hot water in a hot water tank using the power of the storage battery, and the power of the storage battery is changed to AC. A DC / AC inverter is provided, a switch is provided for switching between the AC power of the DC / AC inverter and the AC power of the commercial power supply to supply power to the load, and the AC power of the commercial power supplied via the switch is provided. The photovoltaic water heater according to the above 1) or 3), which can also supply power to the electric water heater.
【０００５】[0005]
【作用】この発明では、太陽光は貯水部に蓄えられた水
を加熱するとともに、貯水部の水とその底面の透明体を
通過して太陽電池パネルに照射して太陽電池パネルを作
動させ、起電力を発生する。この起電力は充電回路によ
って蓄電池に充電される。ここで、太陽電池パネルは太
陽光の照射を受けて高温になり、その太陽電池パネルの
性能を低下・劣化させるが、上方の貯水部の水が太陽電
池パネルの温度が過度に上昇するのを防止し、太陽電池
パネルの性能を維持し、エネルギー変換効率を高い水準
に維持する。又、太陽電池パネルで充電された蓄電池の
電源を用いて、温水タンクから出される温水の温度を加
熱ヒーターによって加熱する電気温水器を設けた発明で
は、昼に蓄電した蓄電池の電力でもって加熱ヒーターを
夜加熱することで温度を低くなる夜の給湯温度を上昇さ
せることができる。又昼でも６０℃以上の高温まで給湯
温度を高めることができる。According to the present invention, the solar light heats the water stored in the water storage part, and irradiates the solar cell panel through the water in the water storage part and the transparent body on the bottom thereof to operate the solar cell panel, Generates electromotive force. This electromotive force charges the storage battery by the charging circuit. Here, the solar panel becomes hot due to the irradiation of sunlight, and the performance of the solar panel is degraded or deteriorated.However, the water in the upper reservoir prevents the temperature of the solar panel from excessively rising. Prevent, maintain the performance of solar panels, and maintain energy conversion efficiency at a high level. Further, in the invention provided with an electric water heater for heating the temperature of hot water discharged from a hot water tank by a heater using a power supply of a storage battery charged by a solar cell panel, the heating heater uses the power of the storage battery stored in the daytime. By heating at night, the temperature of the hot water supply at which the temperature is lowered can be increased. Further, even in the daytime, the hot water supply temperature can be raised to a high temperature of 60 ° C. or more.
【０００６】[0006]
【発明の実施の形態】この発明の貯水部は、仕切壁で区
画して貯水部の強度を高め、又仕切壁に通水口を開口
し、下方から５〜２０℃程の冷たい水が流入し、上方に
向けて区画された空間と通水口を流れ、上方から吐水す
るようにするのが、水の温度差による貯水部内の水の流
れと一致して水の流れを円滑にする。又、仕切壁で貯水
部内部を迂回した長い通水路を形成するようにすること
が、貯水部の水に充分な太陽光エネルギーを与えて高い
温度まで昇温させることができて好ましい。又貯水部に
給水する水は貯水部より高い位置に設けた冷水補給タン
クから導入するようにすることがポンプを用いず水頭差
だけで貯水部へ水を供給できて好ましい。貯水部及び太
陽電池パネルは１０°程度に傾けるのが、太陽光の受光
状態及び水の流れの上で好ましい。透明体は、厚手のガ
ラスが、又貯水部の区画壁としては無色透明なアクリル
板が実用的である。BEST MODE FOR CARRYING OUT THE INVENTION The water storage part of the present invention is divided by a partition wall to increase the strength of the water storage part, and a water inlet is opened in the partition wall so that cold water of about 5 to 20 ° C. flows from below. Flowing through the space and the water inlet that is partitioned upward and discharging the water from above matches the flow of the water in the water storage unit due to the temperature difference of the water, and makes the flow of the water smooth. In addition, it is preferable to form a long water passage that bypasses the inside of the water storage section by the partition wall because sufficient sunlight energy can be given to the water in the water storage section to increase the temperature to a high temperature. Further, it is preferable that the water to be supplied to the water storage section is introduced from a cold water replenishment tank provided at a position higher than the water storage section, since water can be supplied to the water storage section only by the head difference without using a pump. It is preferable that the water storage unit and the solar cell panel are inclined at about 10 ° in view of the sunlight receiving state and the flow of water. As the transparent body, a thick glass is practically used, and a colorless and transparent acrylic plate is practical as a partition wall of the water storage section.
【０００７】[0007]
【実施例】以下、本発明の実施例を図面に基いて説明す
る。図１は、実施例の全体説明図である。図２は、実施
例の貯水部及び太陽電池パネルの縦断面図である。図３
は、実施例の貯水部の平面図である。図４は、実施例の
水循環を示す説明図である。図５は、実施例の貯水部に
導入される冷水と吐出される温水の温度差変化説明図で
ある。図６は、実施例の太陽電池パネルの発電電圧と表
面温度との関係説明図である。図７は、実施例の太陽電
池パネルの照度−発電電流特性図である。図８は、本発
明の他の実施例の説明図である。図中、１は太陽電池パ
ネル、１ａは太陽電池パネル本体、１ｂは設置台板、２
は同太陽電池パネルの表面のガラス製透明体、３は同透
明体を底面とする貯水部、３ａは同貯水部３の水導入
口、３ｂは同貯水部３の温水吐出口、３ｃは貯水部３の
外周フレーム、３ｄは貯水部３の天井面となる白色透明
透過耐圧ガラス、３ｅは貯水部３内部を区画し、貯水部
の強度材となる仕切壁、３ｆは同仕切壁３ｅに設けた通
水口、３ｇは防水パッキン、４は貯水部３より低い位置
に設けた温水タンク、５は貯水部３より高い位置に設け
た冷水補給タンク、６は冷水給水路、７は同冷水給水路
の途中に設けた開閉バルブ、８は温水排出路、９は温水
タンク４からの５０〜６０℃程の中温温水を配湯する中
温給湯路、１０は温水タンク４の温水を蓄電池１４の電
力で加熱ヒーターを作動させて７０〜９５℃程に加熱す
る電気温水器、１１は同電気温水器からの高温の湯を配
湯する高温給湯路、１２は蛇口、１３は太陽電池パネル
１の電力を蓄電池１４に充電し、又蓄電池１４の電力を
放電させる充放電制御装置、１４は蓄電池、１５は同蓄
電池１４の電圧を交流に変換するＤＣ／ＡＣインバー
タ、１６は負荷、１７は実施例の太陽光発電温水装置を
設置している１０°傾斜した屋根である。又、図８中２
０は商用交流電源、２１は蓄電池１３の電力と商用交流
電源２０の電力とを電気温水器９へ給電するための配電
盤、２２は負荷１５への電力を商用電源２０かＤＣ／Ａ
Ｃインバータ１４とからの電力かに選択する切換器であ
る。貯水部３の底面となるガラス製透明体２と天井壁の
白色透明通過耐圧ガラス３ｄと外周フレーム３ｃとの接
合部は防水パッキン３ｇとシリコンでシールし、密閉し
ている。本実施例では、高い位置に設けた冷水補給タン
ク５の冷水は、その水頭差によって冷水給水路６を介し
て水導入口３ａから屋根１７上の貯水部３内へ送り込ま
れる。冷水は貯水部３に満され、太陽光及び太陽光で温
度上昇した太陽電池パネルの熱を受けて温度が上昇し
て、その温度上昇によって軽くなって貯水部３内の上方
へ移動する。同貯水部において仕切壁３ｅで区画された
室・通水口３ｆを通過して迂回しながらよく吸熱して上
昇し、温水吐出口３ｂから４０〜６０℃程度で温水排出
路８へ排出される。夏の晴天の時、水の温度上昇は２０
〜４０℃であり、冬季の時は５〜２０℃程である。一
方、太陽光は貯水部３の水及びその底面の透明体２を透
過して太陽電池パネル１ａに届き、太陽電池パネル１ａ
の太陽電池にエネルギーを与え、起電力を発生させる。
太陽電池パネル１ａの起電力は、充放電制御回路１３を
介して蓄電池１４に充電し、その蓄電池１４の電力は充
放電制御回路１３，ＤＣ／ＡＣインバータ１５を介して
電気温水器１０，その他負荷１６へ給電される。電気温
水器１０は貯水部３から吐出される温水（４０〜６０
℃）を加熱して８０〜９５℃の高温にして高温給湯路１
１に送り込み、浴室等へ給湯する。又、蓄電池１４の電
力はＤＣ／ＡＣインバータ１５で交流（１００Ｖ，２０
０Ｖ，５０〜６０Ｈｚ）へ交換されて負荷１６に給電す
る。このように、本実施例は太陽光エネルギーを熱及び
電気に変換し、貯水部３からの温水を温水タンク４に貯
え、又太陽電池パネル１から電力でエネルギーを蓄電池
１４に貯えて、湯及び電力として供給する。図７は、実
施例における照度一発電電流の関係を示すものであり、
横軸は照度のある時刻であり、縦軸は電流と照度を示し
ている。これから分るように、照度と電流はよく追従し
比例関係にある。図５は実施例の冬の日の晴天における
貯水部に送られる冷水の温度と吐出される温水温度を示
す水温の計測図であり、昼の１２時頃が温度差が最も大
きく１８℃程となって３３℃程の温水が吐出される。又
夏の日では太陽電池パネルの表面温度は貯水部３の冷水
で冷やされ、３１〜５２℃であり、発電電圧は２１〜２
７Ｖである。図８に示す実施例２は、実施例１の装置に
おいて、更に商用電源２０からの電力を用いて電気温水
器１０及び負荷１６に供給できるようにし、照度が低い
季節又は天候が悪い日において、充分な温度に温水を加
熱できるようにした例である。この実施例２では、雨・
雲・冬季等で起電力が不足して蓄電池１４の蓄電電力が
少なく、温水の温度が上昇しないときは切換器２２を商
用交流電源２０側にし、商用交流電源２０を直接負荷１
６へ給電し、又配電盤２１を介して電気温水器１０を商
用交流電源２０で作動し、高い温度まで充分に昇温させ
る。これによってこれらの場合の蓄電池１４の充電不足
と、温水の低温化をなくす。他の構成・作用効果は前記
実施例１と同様である。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an overall explanatory diagram of the embodiment. FIG. 2 is a longitudinal sectional view of the water storage section and the solar cell panel of the example. FIG.
FIG. 3 is a plan view of a water storage section of the embodiment. FIG. 4 is an explanatory diagram illustrating the water circulation of the example. FIG. 5 is a diagram illustrating a change in temperature difference between cold water introduced into the water storage section and hot water discharged from the water storage section according to the embodiment. FIG. 6 is a diagram illustrating the relationship between the generated voltage and the surface temperature of the solar cell panel of the example. FIG. 7 is an illuminance-generated current characteristic diagram of the solar cell panel of the example. FIG. 8 is an explanatory diagram of another embodiment of the present invention. In the figure, 1 is a solar cell panel, 1a is a solar cell panel main body, 1b is an installation base plate, 2
Is a transparent body made of glass on the surface of the solar cell panel, 3 is a water storage section having the transparent body as a bottom face, 3a is a water inlet of the water storage section 3, 3b is a hot water discharge port of the water storage section 3, and 3c is water storage. The outer peripheral frame of the section 3, 3 d is a transparent white pressure-resistant glass serving as a ceiling surface of the water storage section 3, 3 e partitions the inside of the water storage section 3, and a partition wall serving as a strength material of the water storage section, and 3 f is provided on the partition wall 3 e. 3g is a waterproof packing, 4 is a hot water tank provided at a position lower than the water storage unit 3, 5 is a cold water supply tank provided at a position higher than the water storage unit 3, 6 is a cold water supply channel, and 7 is a cold water supply channel. , An open / close valve provided in the middle, 8 is a hot water discharge path, 9 is a medium temperature hot water supply path for distributing medium temperature hot water from the hot water tank 4 at about 50 to 60 ° C., and 10 is hot water in the hot water tank 4 using electric power of the storage battery 14. An electric water heater that operates a heating heater to heat it to about 70 to 95 ° C., 11 A high-temperature hot water supply channel for distributing high-temperature hot water from the electric water heater, 12 a faucet, 13 a charge / discharge control device for charging the storage battery 14 with the power of the solar cell panel 1 and discharging the power of the storage battery 14; Is a storage battery, 15 is a DC / AC inverter for converting the voltage of the storage battery 14 into alternating current, 16 is a load, and 17 is a roof inclined at 10 ° on which the photovoltaic water heater of the embodiment is installed. Also, in FIG.
Reference numeral 0 denotes a commercial AC power supply, 21 denotes a switchboard for supplying electric power of the storage battery 13 and electric power of the commercial AC power supply 20 to the electric water heater 9, 22 denotes electric power to the load 15 by the commercial power supply 20 or DC / A.
This is a switch for selecting the power from the C inverter 14. The junction between the transparent glass body 2 serving as the bottom surface of the water storage unit 3, the white transparent pressure-resistant glass 3d of the ceiling wall, and the outer peripheral frame 3c is sealed with waterproof packing 3g and silicon to be hermetically sealed. In the present embodiment, the chilled water in the chilled water supply tank 5 provided at a high position is sent from the water inlet 3 a to the water storage section 3 on the roof 17 via the chilled water supply channel 6 due to the difference in head. The cold water is filled in the water storage unit 3, and the temperature rises due to the sunlight and the heat of the solar cell panel whose temperature has been increased by the sunlight. In the same water storage section, the water passes through a room / water opening 3f partitioned by a partition wall 3e and detours well while absorbing heat and rising, and is discharged from the hot water discharge port 3b to the hot water discharge passage 8 at about 40 to 60 ° C. When the weather is fine in summer, the water temperature rises by 20
-40 ° C, and in winter it is about 5-20 ° C. On the other hand, the sunlight passes through the water in the water storage unit 3 and the transparent body 2 on the bottom surface thereof and reaches the solar cell panel 1a, and the solar cell panel 1a
Energy to the solar cells to generate electromotive force.
The electromotive force of the solar cell panel 1a charges the storage battery 14 via the charge / discharge control circuit 13, and the power of the storage battery 14 is supplied via the charge / discharge control circuit 13, the DC / AC inverter 15, the electric water heater 10, and other loads. 16 is supplied. The electric water heater 10 is provided with hot water (40 to 60) discharged from the water storage unit 3.
° C) to a high temperature of 80-95 ° C and a hot water supply path 1
Feed into 1 and supply hot water to the bathroom. The electric power of the storage battery 14 is supplied to an AC (100 V, 20
0V, 50-60 Hz) and feeds the load 16. As described above, the present embodiment converts sunlight energy into heat and electricity, stores hot water from the water storage unit 3 in the hot water tank 4, and stores energy in the storage battery 14 with electric power from the solar cell panel 1 so that hot water and Supply as electric power. FIG. 7 shows the relationship between the illuminance and the generated current in the example.
The horizontal axis represents the time when there is illuminance, and the vertical axis represents current and illuminance. As can be seen, the illuminance and the current follow well and are in a proportional relationship. FIG. 5 is a measurement diagram of the water temperature indicating the temperature of the cold water sent to the water storage section and the temperature of the discharged hot water in fine weather on a winter day according to the embodiment. Then, hot water of about 33 ° C. is discharged. On a summer day, the surface temperature of the solar cell panel is cooled by cold water in the water storage unit 3 to be 31 to 52 ° C., and the generated voltage is 21 to 2 ° C.
7V. The second embodiment shown in FIG. 8 is different from the apparatus of the first embodiment in that the electric water heater 10 and the load 16 can be further supplied using electric power from the commercial power supply 20, and in a low illuminance season or a bad weather day, This is an example in which warm water can be heated to a sufficient temperature. In this embodiment 2, the rain
When the power stored in the storage battery 14 is low due to insufficient electromotive force due to clouds or winter season, and the temperature of the hot water does not rise, the switch 22 is set to the commercial AC power supply 20 side, and the commercial AC power supply 20 is directly connected to the load 1.
6, and the electric water heater 10 is operated by the commercial AC power supply 20 via the switchboard 21 to sufficiently raise the temperature to a high temperature. This eliminates the insufficient charging of the storage battery 14 and the lowering of the temperature of the hot water in these cases. Other configurations, functions and effects are the same as those of the first embodiment.
【０００８】[0008]
【発明の効果】以上の様に、本発明によれば太陽電池パ
ネル上に貯水部を設け、これに冷水を送り込んで太陽電
池パネルの温度が高温にならないように冷却したので、
太陽電池の温度による性能劣力・起電力低下がないよう
にし、太陽電池による電力エネルギー変換効率を高くす
るとともに、貯水部の冷水を加温して温水として太陽光
エネルギーを取り出すことができ、太陽光の有効利用の
効率を高めた。又太陽電池の電力を蓄電池に貯え、これ
で電気温水器を作動させて温水を加熱するものでは、温
水を所定の温度に高めることができ、６０〜８０℃の高
温給湯も可能とし、天候が悪く照度が小さいとき、冬季
において温水の温度を所定温度に上昇させることができ
る。これに商用交流電源から切換えて電気温水器・負荷
に給電できるものでは、確実に温水温度の確保、負荷へ
の給電が可能となる。As described above, according to the present invention, a water storage section is provided on a solar cell panel, and cold water is supplied to the water storage section to cool the solar cell panel so that the temperature of the solar cell panel does not become high.
In addition to preventing performance deterioration and electromotive force decrease due to the temperature of the solar cell, increasing the power energy conversion efficiency of the solar cell, it is also possible to heat the cold water in the water storage section and extract solar energy as hot water. Increased the efficiency of effective use of light. In the case of storing the power of the solar cell in the storage battery and operating the electric water heater to heat the hot water with the storage battery, the hot water can be raised to a predetermined temperature, and a high-temperature hot water supply of 60 to 80 ° C. can be performed. When the illuminance is bad, the temperature of the hot water can be raised to a predetermined temperature in winter. In the case where the electric power can be supplied to the electric water heater and the load by switching from the commercial AC power supply, it is possible to reliably secure the temperature of the hot water and supply the electric power to the load.
【図１】実施例の全体説明図である。FIG. 1 is an overall explanatory diagram of an embodiment.
【図２】実施例の貯水部及び太陽電池パネルの縦断面図
である。FIG. 2 is a longitudinal sectional view of a water storage section and a solar cell panel according to the embodiment.
【図３】実施例の貯水部の平面図である。FIG. 3 is a plan view of a water storage section of the embodiment.
【図４】実施例の水循環を示す説明図である。FIG. 4 is an explanatory diagram showing water circulation in the example.
【図５】実施例の貯水部の導入される冷水と吐出される
温水の温度差変化説明図である。FIG. 5 is a diagram illustrating a change in temperature difference between cold water introduced into a water storage unit and hot water discharged from the water storage unit according to the embodiment.
【図６】実施例の太陽電池パネルの発電電圧と表面温度
との関係説明図である。FIG. 6 is a diagram illustrating the relationship between the generated voltage and the surface temperature of the solar cell panel of the example.
【図７】実施例の太陽電池パネルの照度−発電電流特性
図である。FIG. 7 is an illuminance-generated current characteristic diagram of the solar cell panel of the example.
【図８】本発明の他の実施例の説明図である。FIG. 8 is an explanatory diagram of another embodiment of the present invention.
１ 太陽電池パネル １ａ 太陽電池パネル本体 １ｂ 設置台板 ２ 透明体 ３ 貯水部 ３ａ 水導入口 ３ｂ 温水吐出口 ３ｃ 外周フレーム ３ｄ 透明天井面 ３ｅ 仕切壁 ３ｆ 通水口 ４ 温水タンク ５ 冷水補給タンク ６ 冷水給水路 ７ 開閉バルブ ８ 温水排出路 ９ 中温給湯路 １０ 電気温水器 １１ 高温給湯路 １２ 蛇口 １３ 充放電制御装置 １４ 蓄電池 １５ ＤＣ／ＡＣインバータ １６ 負荷 １７ 屋根 ２０ 交流電源 ２１ 配電盤 ２２ 切換器 DESCRIPTION OF SYMBOLS 1 Solar cell panel 1a Solar cell panel main body 1b Installation base plate 2 Transparent body 3 Water reservoir 3a Water introduction port 3b Hot water discharge port 3c Peripheral frame 3d Transparent ceiling surface 3e Partition wall 3f Water inlet 4 Hot water tank 5 Cold water supply tank 6 Cold water supply Road 7 Open / close valve 8 Hot water discharge path 9 Medium temperature hot water supply path 10 Electric water heater 11 High temperature hot water path 12 Faucet 13 Charge / discharge control device 14 Storage battery 15 DC / AC inverter 16 Load 17 Roof 20 AC power supply 21 Switchboard 22 Switch
Claims (4)
きる透明体を設け、同透明体を底面とする水を貯える貯
水部を形成し、同貯水部に水を供給する冷水補給タンク
と、同貯水部で加温された水を取り込んで貯える温水タ
ンクとを設け、貯水部の水で太陽電池パネルを冷却しな
がら同時に温水を生成することを特徴とする太陽光発電
温水装置。1. A cold water replenishment tank for providing a transparent body through which sunlight can pass through the surface of a solar cell panel, forming a water storage part having the transparent body as a bottom surface for storing water, and supplying water to the water storage part; A photovoltaic water heater, comprising: a hot water tank for taking in and storing the water heated in the water storage section, wherein the water in the water storage section cools the solar cell panel and simultaneously generates hot water.
池に蓄電し、同蓄電池の電源を用いて温水タンクの温水
を加熱する電気温水器を設けた請求項１記載の太陽光発
電温水装置。2. The photovoltaic water heater according to claim 1, further comprising an electric water heater for storing the output of the solar cell panel in a storage battery by a charging circuit and heating the hot water in a hot water tank using a power supply of the storage battery.
部に水を供給する冷水補給タンクを貯水部より高い位置
に配置し、且つ水導入口を貯水部の低い位置に設け、又
温水タンクを貯水部より低い位置に設け、しかも貯水部
の高い位置に温水吐出口を設け、水頭差と温度差で貯水
部の水が冷水補充タンクから温水タンクへ流れるように
した請求項１又は２記載の太陽光発電温水装置。3. A solar cell panel and a water storage part are inclined, a cold water supply tank for supplying water to the water storage part is disposed at a position higher than the water storage part, and a water inlet is provided at a lower position of the water storage part. 3. The tank according to claim 1, wherein the tank is provided at a position lower than the water storage part, and a hot water discharge port is provided at a position higher than the water storage part, so that water in the water storage part flows from the cold water replenishment tank to the hot water tank by a head difference and a temperature difference. A solar water heating device as described.
池に蓄電し、同蓄電池の電力を用いて温水タンクの温水
を加熱する電気温水器を設け、しかも蓄電池の電源を交
流にするＤＣ／ＡＣインバータを設け、同ＤＣ／ＡＣイ
ンバータの交流電力と商用電源の交流電力とを切換えて
負荷に給電する切換器を設け、更に同切換器を介して給
電される商用電源の交流電力を電気温水器にも給電でき
るようにした請求項１又は３記載の太陽光発電温水装
置。4. A DC / AC system for storing an output of a solar cell panel in a storage battery by a charging circuit, providing an electric water heater for heating hot water in a hot water tank using the power of the storage battery, and further using an AC power supply for the storage battery. An inverter, a switch for switching between the AC power of the DC / AC inverter and the AC power of the commercial power supply to supply power to the load, and an electric water heater for supplying the AC power of the commercial power supplied through the switch to the electric water heater; 4. The photovoltaic power generation and water heater according to claim 1 or 3, wherein the power can also be supplied to the power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24112098A JP3364591B2 (en) | 1998-08-11 | 1998-08-11 | Solar water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24112098A JP3364591B2 (en) | 1998-08-11 | 1998-08-11 | Solar water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000055479A true JP2000055479A (en) | 2000-02-25 |
| JP3364591B2 JP3364591B2 (en) | 2003-01-08 |
Family
ID=17069592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24112098A Expired - Fee Related JP3364591B2 (en) | 1998-08-11 | 1998-08-11 | Solar water heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3364591B2 (en) |
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| WO2005109622A1 (en) * | 2004-05-09 | 2005-11-17 | Yun Li | Solar power generation system |
| JP2006078007A (en) * | 2004-09-07 | 2006-03-23 | Toshiyuki Kamio | Solar energy system |
| JP2007003390A (en) * | 2005-06-24 | 2007-01-11 | National Institute Of Advanced Industrial & Technology | Photovoltaic power generation evaluation system |
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| JP2006078007A (en) * | 2004-09-07 | 2006-03-23 | Toshiyuki Kamio | Solar energy system |
| JP2007003390A (en) * | 2005-06-24 | 2007-01-11 | National Institute Of Advanced Industrial & Technology | Photovoltaic power generation evaluation system |
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