JPH0468545B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for disposing of geothermal heat and the like.

BACKGROUND TECHNOLOGY First, a description will be given by taking a hot water pipe for district heating as an example. Due to the increasing complexity of road traffic, communication cables, power cables, etc. are often buried near roads in recent years. On the other hand, since the hot water pipes for district heating are also buried underground, the heat leaking from the hot water pipes has the adverse effect of increasing the temperature of the cables at locations where the two are close to each other. Therefore, it is necessary to extract and dispose of the leaked heat in some way.

In this case, the most common method is to use a heat pipe or a device that circulates water as a refrigerant, and dispose of the waste via heat radiating fins.

FIG. 7 schematically shows this. In the figure, 1 is a hot water pipe buried underground 2, 3 is a heat pipe buried underground 2 with one end exposed to the atmosphere 4, and the exposed part has many heat dissipation fins 5.
is installed. A power cable 6 is located above the other ends of the hot water pipe 1 and the heat pipe 3 and is buried underground. 7 shows the flow of natural wind.

Conventionally, methods as shown in FIGS. 8 and 9 have been adopted as a method of actively cooling the exposed portion of the heat pipe 3. That is, in the case shown in FIG. 8, the exposed parts of the heat pipes 3 are bundled and housed in a ventilation box (box-shaped frame) 8 to allow natural air 7 to pass from side to side. The thing is to bundle the exposed parts of heat pipes 3 and make a draft tower (drum-shaped cylinder).
9, and the natural wind 7 is passed from the bottom to the top using natural convection. Incidentally, the latter method has the disadvantage that natural ventilation cannot be used as effectively as compared to the former method.

Problems to be Solved by the Invention However, when we actually conducted experiments with the configuration shown in Figures 8 and 9, we found that the natural wind speed is the same, although there are temporal fluctuations, as shown in Figure 10. is quite large on average, and yet there was a problem that it could not be used effectively.

On the other hand, there is a method of forced ventilation cooling using an electric fan, but this method does not save energy and requires new electrical equipment and maintenance management, resulting in additional costs and labor costs. arise.

The present invention was made to solve these problems, and it can effectively utilize natural ventilation, can be implemented at extremely low cost, requires almost no maintenance, and can utilize natural ventilation more effectively than ever before. The purpose is to provide a disposal method such as geothermal heat that can be used.

Means for Solving the Problem In order to solve the above problem, the method for disposing of geothermal heat, etc. of the present invention includes a heat pipe that dissipates geothermal heat,
A method of cooling a heat radiator such as a natural air-cooled transformer or a radiator, in which the heat radiator is erected on the outer periphery of the heat radiator in the same direction as the heat radiator with an appropriate distance between the heat radiator and the heat radiator. A plurality of guide vanes arranged in the direction increase the speed of natural wind and guide it to the heat radiator.

EXAMPLE An example of the method of the present invention will be described below based on the drawings.

1 and 2 show a first embodiment. That is, the exposed parts of the heat pipes 3 are bundled and stored in a ventilation box (box-shaped frame) 8, and on the outer periphery of this ventilation box 8,
The heat radiator is a body that is erected in the same direction as the heat pipe at an appropriate interval, and has a plurality of guide vanes (speed-up vanes) 10 arranged in the radial direction.

By arranging the guide vanes 10 in this way, the natural wind 7 that would normally have passed through both sides without hitting the ventilation box 8 (without having any cooling effect on the heat dissipation fins 5) is now directed to the ventilation box 8. It is guided while being accelerated by the guide vanes 10. Since the cooling effect increases as the wind speed increases if other conditions are constant, the heat dissipation fins 5 can be cooled more than before by using this method.

Although the figure shows a case where there are six guide vanes 10, the number of guide vanes 10 is of course a factor that controls the degree of speed increase.
length L, height H of guide vane 10, guide vane 10
These include the gap D between the ventilation box 8 and the shape of the guide vane 10, and the conditions of the location where the ventilation box 8 is installed (unbalanced wind direction, wind speed, etc.) and the economical balance between effectiveness and cost are also taken into consideration. It is recommended that you decide accordingly.

3 and 4 show a second embodiment, and as is clear from the figures, a bent plate or a corrugated plate is used for the guide vane 10. The number of guide blades 10 shown is eight in each case.

The method shown in the first and second embodiments is a method of guiding the natural wind 7 in a two-dimensional (average) manner, but in order to increase the speed increasing effect, it is necessary to guide the natural wind 7 in the vertical direction. It is preferable to also induce

FIGS. 5 and 6 show a third embodiment in which vertical natural wind 7 can also be guided. That is, the one shown in FIG. 5 has a plurality of megaphone-shaped cylinders 11 with a rectangular cross section arranged in the radial direction around the outer periphery of the ventilation box 8, and the one shown in FIG. A plurality of truss-like cylindrical bodies 12 each having a rectangular cross section are arranged in the section.

According to this, the natural wind 7 in the left and right directions and in the upper and lower directions is guided to the ventilation box 8 while being accelerated by the cylinders 11 and 12.

Although the above embodiment has been explained using a heat pipe that radiates underground heat as an example, it is clear from the structure that it can be widely applied to heat radiating bodies such as natural air cooling transformers and radiators. It is.

Effects of the Invention As described above, according to the method of the present invention, the passage of natural air is improved, the cooling effect is increased, and the natural wind, which has no fixed direction, can be focused and used in the horizontal direction within a range of 180 degrees. , it is possible to guide and amplify the amount of ventilation that deviates from the heat sink. Moreover, it can be implemented at low cost, requires almost no maintenance, and can utilize natural wind more effectively than ever before. In particular, it can be applied to cooling a heat radiator in places where it is difficult to install new electrical equipment or where it is not cost effective.

[Brief explanation of the drawing]

1 to 6 show one embodiment of the present invention, and FIG. 1 is a perspective view of the vicinity of the ventilation box in the first embodiment,
FIG. 2 is a plan view of the same, FIGS. 3 and 4 are plan views of the area around the ventilation box in the second embodiment, and FIG.
Figure 6 is a side view of the area around the ventilation box in the third embodiment, Figures 7 to 10 are for explaining the conventional example, Figure 7 is a sectional view of the ground, and Figure 8 is the area around the ventilation box. FIG. 9 is a perspective view of the vicinity of the draft tower, and FIG. 10 is a diagram showing the wind speed during natural ventilation. 3...Heat pipe, 7...Natural wind, 10...
Guide vane.

Claims (1)

[Claims] 1. A method of cooling a heat radiator such as a heat pipe, natural air cooling transformer, or radiator that radiates underground heat, in which a heat radiator is installed on the outer periphery of the heat radiator with an appropriate space between the heat radiator and the heat radiator. A method for disposing of underground heat, etc., characterized in that natural wind is guided to the heat radiating body while increasing its speed by a plurality of guide vanes that are erected in the same direction as the body and arranged in the radial direction.