JP2011137620A - Light condensing and heat collecting device for sunlight - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make a reflector portion with a large area resistant to wind, in a so-called parabolic trough type light condensing and heat collecting device for sunlight collecting and using solar energy. <P>SOLUTION: When a large number of approximately 1-2 m reflectors 1 are juxtaposed laterally, the depth of a groove is approximately 1 m and the width is approximately 4 m. An evaporation pipe 2 supported by support columns 3 is in a position of a focus and also serves as a rotating shaft of the reflectors 1. Beams 4 support a lateral bar holding the rotated reflectors 1 and are moved like a seat swing. Since manufactured within a groove, this device cannot be used in the morning and evening when the sun altitude is too low, but has the advantage of strong resistance to wind. When the device is manufactured to face the north and south, it has an advantage in the morning and evening. When manufactured to face the east and west, the device has the advantage of eliminating the necessity of diurnal movement of the reflectors 1. In this case, at low latitudes in Japan or the like, a slope in the south is formed to be smooth into which light is made to enter easily, and the north side is formed to be a steeper slope. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

      The present invention relates to a so-called barabolic trough type solar light collecting and collecting apparatus that collects and uses solar energy.

      There is a barotropic trough-type concentrating heat collector that has a linear focus.

      The biggest problem with this device is that it is vulnerable to wind. In order for a reflector with a large paraboloid to withstand strong winds such as typhoons, it must be made strong enough, which is inconvenient for collecting low-density solar energy. It becomes unprofitable, making it difficult to realize economically.

In order not to receive the wind properly, the majority of the reflector should enter the groove dug into the ground. This means that each row is built in a separate groove.

For windbreaks, a simple board can be used, but today, with heavy machinery like a power shovel, digging the earth is much more economical. This comes from the fact that no material is required and the strength and durability are incomparably good. In the case of a typhoon, the rotating reflector is brought to the bottom, which becomes an emergency blame place for the reflector.

は４ｍ程度、支柱３に支えられた、蒸発管２は焦点の位置にあり、それが反射板１の回転軸も兼ねることになる。４は回転する反射板を保持する横棒を支持するブランコのように移動する梁である。 この装置は溝内に造るため、太陽高度があまり低い朝夕の利用は出来ないが、風に対する強さの利点が、その欠点より、大きいため出てきたアイデアである。 装置を南北向きに作ると、朝夕に強い。東西向きに作ると反射板の日周移動が必要なくなる利点がある。この場合は日本などの緯度では南側のスロープは光が入りやすいようになだらかにし、北側はより急斜面にする。必要なら雨水の排水設備は各列ごとに設ける。

Is about 4 m, supported by the support column 3, and the evaporation tube 2 is at the focal point, which also serves as the rotational axis of the reflector 1. Reference numeral 4 denotes a beam that moves like a swing that supports a horizontal bar that holds a rotating reflector. Since this device is built in a ditch, it cannot be used in the morning and evening when the solar altitude is very low, but it is an idea that came out because the advantage of strength against wind is larger than its disadvantage. Making the device north-south is strong in the morning and evening. Making it east-west has the advantage of eliminating the need for diurnal movement of the reflector. In this case, at latitudes such as Japan, the slope on the south side should be gentle so that light can enter easily, and the slope on the north side should be steeper. If necessary, rainwater drainage will be provided for each row.

Cross section Perspective view

DESCRIPTION OF SYMBOLS 1 Reflector 2 Evaporating tube 3 Support | pillar 4 Reflector support beam

Claims (1)

  A solar light collecting and collecting apparatus characterized in that most of the reflecting surface of the parabolic trough is in a groove dug down the ground.

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