Solar heat collecting device
A technology of solar heat collection and sunlight, which is applied in the field of solar energy utilization, can solve the problems of high temperature heat storage difficulty, large power consumption, and large tower load, etc., so as to reduce high temperature heat storage, reduce tower body load, and reduce tower load. The effect of body loading
Inactive Publication Date: 2013-11-06
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology
However, there are deficiencies in the above three kinds of solar heat collecting devices: the sunlight receiver in the existing tower type solar heat collecting device must be placed on the top of the tower, so the heat loss is large, the load on the tower body is large, and the heated medium needs to be pumped It is sent to the top of the tower for heat absorption, which consumes a lot of power and makes it difficult to store heat at high temperature
The solar receiver in the existing dish solar heat collector is placed at the focus of the rotating parabolic mirror, and the solar receiver needs to rotate with the rotating parabolic mirror to track the sun, so it is difficult to store heat at high temperature
Method used
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[0015] Such as figure 1 Shown is a diagram of the proposed reflective tower-bottom solar focusing high-temperature heat collector, including a rotating parabolic mirror 1, a conical mirror 2, an inverted compound parabolic mirror 3, a cylindrical mirror 4, a compound parabolic mirror 5, and a solar receiver 6. Multiple heliostats 7 and reflection towers 8. The revolving parabolic mirror 1 is placed on the top of the reflection tower 8, the solar receiver 6 is placed on the bottom of the reflection tower 8, and the conical mirror 2, the inverted composite parabolic mirror 3, the cylindrical mirror 4 and the composite mirror are placed in sequence from the top to the bottom of the tower. Parabolic mirror 5. The heliostat 7 can track the sun and always focus and reflect sunlight to a fixed point on the top of the reflection tower 8 , which is the focal point 9 of the rotating parabolic mirror. If the sunlight reflected by the heliostat passes through the focal point 9 of the ro...
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The invention discloses a reflecting-tower-bottom type solar focusing high-temperature heat collecting device, which consists of a plurality of heliostats, a reflecting tower, a rotary parabolic mirror, a conical mirror, an inverted compound parabolic mirror, a cylindrical mirror, a compound parabolic mirror and a sunlight receiver, wherein the rotary parabolic mirror, the conical mirror, the inverted compound parabolic mirror, the cylindrical mirror, the compound parabolic mirror and the sunlight receiver are arranged on a reflecting tower in sequence from top to bottom. The sunlight is focused and reflected to the tower top of the reflecting tower by the plurality of heliostats, and then is reflected again on the sunlight receiver of the tower bottom from the tower top by the rotary parabolic mirror, the conical mirror, the inverted compound parabolic mirror, the cylindrical mirror and the compound parabolic mirror so as to realize heat collection, heat storage and heat exchange at the tower bottom. The reflecting-tower-bottom type solar focusing high-temperature heat collecting device has the advantages that the load of a tower body, the power consumption and the heat loss can be reduced, the process can be simplified, and high-temperature heat storage can be convenient. The reflecting-tower-bottom type solar focusing high-temperature heat collecting device is applicable to occasions such as solar thermal power generation and high-temperature heating.
Description
technical field [0001] The invention belongs to the technical field of solar energy utilization, and in particular relates to a solar energy focusing high temperature heat collecting device. Background technique [0002] Solar energy has the advantages of being clean, non-polluting, available anywhere, and inexhaustible. The development, utilization and conversion of solar energy has become a research hotspot. In solar energy utilization technology, photothermal conversion technology is widely used. It converts solar radiation energy into heat energy and utilizes it. Photothermal conversion can be divided into low-temperature heat utilization (<100°C) and medium-temperature heat utilization ( 100℃~500℃) and high temperature heat utilization (>500℃). At present, low-temperature heat utilization of solar energy is developing rapidly, such as solar water heaters; and high-temperature heat utilization technology of solar energy has very broad application prospects, such a...
Claims
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IPC IPC(8): G02B7/182F24J2/10G02B19/00F24S23/70
CPCY02E10/40
Inventor 王君姜希彤孔令广曲燕章大海
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)