JPH0636451Y2 - Downflow type solar collector using water tank - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a downflow solar collector that uses a water storage facility (hereinafter simply referred to as a water tank) such as an outdoor pool, water tank, or aquaculture pond. .

[Prior Art] A solar heat utilization facility called a solar pond is well known. For example, a flow-down type in which an air dome is covered on the surface of the water, or a float having a black surface is floated on the surface of the water and water is flowed on the float is also known. In addition to this, various types of solar ponds have been proposed and tried.

[Problems to be solved by the invention] An important point for these solar heat utilization facilities is how to reduce initial costs while maintaining high heat collection efficiency. Secondly, it is also important to have a simple structure that allows facilities to be easily constructed all over the country without the need to train special skilled workers and can be managed by ordinary facility operators. Third, when materials are deteriorated due to long-term use and equipment is renewed, it is required to do this at the lowest possible cost and not to impose a heavy financial burden on the users of the facility.

[Means for Solving the Problems] A heat collector according to the present invention has a water tank in which water is stored, and an edge of the water tank or a support provided along the edge of the water tank, and a peripheral portion is attached to the upper portion of the water tank. A water tank having a heat receiving surface of a flexible sheet material covering the cover and a reel connected to an end portion of the heat receiving surface of the flexible sheet material and for retractably winding and storing the flexible sheet material. Having a reel device installed at the edge of the heat-receiving surface and a supply means for supplying water in the water tank to the back surface of the heat-receiving surface, and by pushing down or pulling down a part of the heat-receiving surface of the flexible sheet material, the water tank Is formed so that the heat medium flows along the back surface of the flexible sheet material from the high point to the low point of the inclined surface by using the liquid supply means. .

When used, the flexible sheet material is pulled out from a reel device installed on the side edge of the water tank to cover the water tank, and after use, the flexible sheet material is wound around the reel device and removed from the water tank.

[Operation] By configuring as described above, a heat collector composed of a simple sheet material having a very large area is completed on the liquid surface of the water tank.

The flexible sheet material forming the heat receiving surface forms a closed space between the liquid surface and the liquid surface, and this space prevents steam from leaking during heat collection and functions as an adiabatic air layer after the heat collection is completed. Further, due to the inclined installation of the flexible sheet material described above, the heat receiving surface of the heat receiving sheet material is lowered to a position lower than the supporting surface of the support provided along the edge of the liquid layer or along the edge, and thus the recess formed in this way is formed. A greenhouse space can be formed by covering it with a transparent sheet. Even if the flexible sheet material may be damaged, unlike the conventional flow-down method in which water falls from the damaged part, a large amount of water flowing down the back side of the flexible sheet leaks from the damaged part. There is nothing to do. Damaged parts can be repaired with simple batch work.

When not in use, the flexible sheet material is wound on a fixed or portable reel device arranged on the side edge of the water tank and removed from the water tank. In use, the flexible sheet material is withdrawn from the reel device.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[Example] FIG. 1 shows a state in which a flexible sheet material 3 is stretched over an edge 2 of a water tank 1. The flexible sheet material 3 is pulled out from the reel device R and used. An end portion of the flexible sheet material 3 is connected to a reel of a reel device R that windably accommodates the flexible sheet material. The flexible sheet material 3 drawn out from the reel device is extended toward the opposite side of the water tank, and the peripheral portion is fixed at a position beyond the edge 2 of the water tank 1 by using a suitable means. If the aquarium 1 does not have the edge 2 as shown, a suitable mount (not shown) is provided along the edge.

FIG. 2 shows a state in which a part of the flexible sheet material 3 thus constructed is pushed down to form the inclined surface 3a on the flexible sheet material. In the illustrated example, this depressing point is performed near the side edge of the water tank. However, if the water tank has a rectangular shape, this pushing-down portion is installed in a straight line, and a flat inclined surface is formed. If the water tank is circular, a mortar-shaped curved surface is formed at one point, and a conical curved surface is formed by raising or pulling one point apart from this.

In this way, an inclined heat-receiving surface made of the flexible sheet material 3 is formed, and at the same time, the heat-receiving surface forms a partition wall to form a closed space 4 which is shielded from the outside air. A greenhouse space is formed above the inclined heat receiving surface with a transparent sheet 7 if necessary.

Liquid supply means 5 for supplying the heat medium liquid in the water tank to the back surface of the flexible sheet material is provided in the closed space. In the illustrated example, the liquid supply means 5 is located above the flexible sheet material 3 and is composed of a nozzle pipe and a current plate for adhering the heat medium liquid to the flexible sheet material.

With the configuration as described above, the heat supply liquid can be exchanged by using the liquid supply means 5 to cause the heat medium liquid to flow down from a high position to a low position of the back surface of the flexible sheet material.

In the example shown in FIG. 2, a heat insulating float 6 may be floated on the liquid surface to shut off the closed space 4 from the liquid surface.

[Advantages of the Invention] If the flexible sheet material is pulled out and wound up by using the reel device as described above, it is possible to lay a wide area collector in a short time with a very simple operation. Can be removed. Since the flexible sheet material is relatively easy to process and can be easily cut according to the contour of the facility, it can be used in various facilities and is highly versatile. It can also be easily installed and dismantled, for example used as a swimming tank in summer and as a heat collector for heat pump heat source in winter,
The mobility of the facility can be increased.

By adopting the above-mentioned configuration, maintenance and management of the heat collector becomes easy, which is convenient in terms of energy saving and cost saving.

The flexible sheet material can be replaced at a low cost, and it is highly economical for collecting heat at medium and low temperatures.

[Brief description of drawings]

FIG. 1 is a cross-sectional explanatory view showing a state in which a reel device is installed on a side portion of a water tank, a flexible sheet material is pulled out from the reel device and is covered on the upper portion of the water tank. FIG. 2 is a schematic explanatory view showing a state in which an inclined surface is formed on a flexible sheet material to form a heat collector. R: Reel device 1 ... Water tank 2 ... Water tank edge 3 ... Flexible sheet material 4 ... Closed space 5 ... Liquid supply means 6 ... Insulating float 7 ... Transparent sheet

Claims (1)

[Scope of utility model registration request] 1. A water tank in which water is stored, a heat-receiving surface of a flexible sheet material which covers the upper portion of the water tank by attaching a peripheral portion to the edge or a support provided along the edge of the water tank, Connected to the end of the heat-receiving surface of the flexible sheet material,
A reel device installed on the edge of the aquarium, comprising a reel for retractably winding and containing a flexible sheet material;
A supply means for supplying water in the water tank is provided on the back surface of the heat receiving surface, and a part of the heat receiving surface of the flexible sheet material is pushed down or pulled down to form an inclined surface facing the side portion of the water tank. Then, a down flow type solar collector using a water tank in which the liquid supply means is used to flow the heat medium along the back surface of the flexible sheet material from a high position to a low position of the inclined surface.