JP2011141108A - Snow cold supply system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a snow cold supply system capable of efficiently supplying cold energy. <P>SOLUTION: This snow cold supply system (10) includes a snow mountain pit (12) having a bottom wall provided with a water catchment port roughly at its center, a snow mountain (16) disposed on an upper part of the snow mountain pit as a cold energy supply source, a water catchment tank (20) disposed on a lower part of the snow mountain pit and communicated with the water catchment port, a raw water tank (22) disposed in adjacent to the snow mountain pit, and a number of water supply piping headers (14) disposed around the snow mountain pit, and a process for force-feeding the cold water obtained by heat exchange between water and snow by supplying the water to the snow mountain from the water supply piping headers to a heat exchanger through the water catchment tank and the raw water tank to exchange heat in the heat exchanger, and supplying the heat-exchanged water to the water supply piping headers is repeated to acquire the cold energy. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention generally relates to a snow cooling heat supply system. More specifically, the present invention relates to a snow cold heat supply system that can efficiently supply cold energy even in summer.

  There is known a system for cooling by supplying snow cooling energy to a cooling facility. Such a system is generally configured to produce cold water by supplying water to snow and to supply this cold water to a cooling facility.

  However, in the conventional system, water is supplied to the snow mountain by a single or a small number of water inlets, so as the snow mountain melts, the contact area between the water and snow gradually decreases, making it difficult to efficiently acquire cold energy. There was a problem of becoming. In particular, in the summer, the melting of the snow mountain progresses, so the degree of decrease in the contact area between water and snow becomes significant, making it even more difficult to acquire cold energy, even though it is a season that particularly requires cold energy. There is a circumstance.

  The present invention has been developed in view of such a situation, and an object thereof is to provide a snow-cooled heat supply system that can efficiently supply cold energy even in summer.

  The snow-cooled heat supply system according to claim 1 of the present invention includes a snowy mountain pit having a bottom wall provided with a water collecting port at a substantially center, a snowy mountain that is disposed above the snowy mountain pit and serves as a source of cold energy, and A water collecting tank disposed below the snowy mountain pit and communicating with the water collecting port; a raw water tank disposed adjacent to the snowy mountain pit; and a plurality of water supply pipe headers arranged around the snowy mountain pit. The cold water obtained by supplying water from the water supply pipe header to the snowy mountain and exchanging heat between the water and snow is pumped to the heat exchanger via the water collection tank and the raw water tank, and heat exchange is performed in the heat exchanger. And the heat energy is acquired by repeating the process of supplying the heat-exchanged water to the pipe header for water supply.

  The snow cooling heat supply system according to claim 2 of the present application is the system of claim 1, wherein the water collecting tank and the raw water tank communicate with each other through a pipe line, and the water level of the raw water tank is monitored. , It is comprised so that the information regarding the water level of the said water collection tank can be acquired.

  The snow cooling heat supply system according to claim 3 of the present application is the system of claim 1 or 2, wherein the bottom wall of the snowy mountain pit is formed so as to form a gentle downward gradient toward the water collecting port. It is characterized by.

  The snow cooling heat supply system according to claim 4 of the present application is the system according to any one of claims 1 to 3, wherein the snowy mountain is covered with a sheet, and all or part of the sheet is insulated. It is formed of a material.

  The snow cooling heat supply system according to claim 5 of the present application is characterized in that, in the system of claim 4, the upper surface of the sheet is formed of a material having high light reflectance.

  The snow cooling heat supply system according to claim 6 of the present application is characterized in that, in the system of claim 4 or 5, a weight is attached to an appropriate portion of the sheet in order to prevent scattering of the sheet. Is.

  According to the snow cold heat supply system of the present invention, water is supplied to the snow mountain 16 from a large number of water supply pipe headers 14, so that a contact area between water and snow can be secured, thereby obtaining efficient cold energy. Is possible. Further, in the snow cold heat supply system of the present invention, the state of the snow mountain 16 inside the snowy mountain pit 12 can be accurately grasped by monitoring the water level of the raw water tank 22, so that the snow cold heat supply system is well controlled. This makes it possible to obtain efficient cooling energy. Further, by providing a downward gentle slope on the bottom wall 12e of the snowy mountain pit 12, it is possible to quickly guide the cold water to the water collecting port 12f. Further, since the snowy mountain 16 is covered with the sheet 18 made of a heat insulating material, the melting of the snowy mountain 16 can be delayed. Moreover, by forming the upper surface of the sheet 18 with a material having a high light reflectance, the influence of solar radiation can be eliminated as much as possible, and the melting of the snowy mountain 16 can be further delayed. Furthermore, by attaching the weight 19 to the sheet 18, scattering of the sheet 18 can be effectively prevented.

  Next, a snow cooling heat supply system according to a preferred embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram schematically showing an entire snow cooling heat supply system according to a preferred embodiment of the present invention. The snow-cooled heat supply system according to a preferred embodiment of the present invention generally indicated by reference numeral 10 in FIG.

  As best shown in FIG. 3 which is a plan view of the snowy mountain pit 12, the snowy mountain pit 12 has an overall rectangular planar shape formed by the bottom walls 12c and 12e. A water collecting port 12f is provided in the approximate center of the bottom wall 12e of the snowy mountain pit 12, and an opening member such as grating is disposed in the water collecting port 12f. Preferably, the bottom walls 12c and 12e are formed to have a gentle downward gradient toward the water collection port 12f (see FIGS. 1 and 2).

  A large number of water supply piping headers 14 are arranged around the snowy mountain pit 12.

  Above the snowy mountain pit 12, a snowy mountain 16 serving as a supply source of cold energy is disposed, and the surface of the snowy mountain 16 is covered with a sheet 18 in order to preserve the snowy mountain 16 for a long period of time.

  The sheet 18 is entirely or partially formed of a suitable heat insulating material (for example, polyethylene).

  Moreover, it is preferable to form the upper surface of the sheet 18 (the surface opposite to the side in contact with the snow mountain 16) from a material having a high light reflectance so that melting of the snow mountain can be delayed.

  In order to prevent the sheet 18 from scattering, weights 19 are attached to the sheet 18 at appropriate positions. As the weight 19, for example, a bag with water sealed therein is used.

  The snow cold heat supply system 10 is also provided with a water collection tank 20 disposed below the snowy mountain pit 12 and communicating with the water intake 12 f of the snowy mountain pit 12.

  The snow cold heat supply system 10 also includes a raw water tank 22 disposed adjacent to the snowy mountain pit 12. Preferably, the raw water tank 22 is divided into a sand settling tank 22a and a cold water tank 22b by a partition wall 22c, and the sand settling tank 22a and the cold water tank 22b communicate with each other through an opening 22c1 provided in the partition wall 22c.

  The water collecting tank 20 and the raw water tank 22 (in the case of being divided into a sand settling tank 22 a and a cold water tank 22 b) communicate with each other by a pipe line 24. Thereby, the water level of the water collection tank 20 and the water level of the raw | natural water tank 22 become the same (refer the broken line of FIG. 2).

  The snow cold heat supply system 10 also includes a pump 26 for pumping cold water and a heat exchanger 30 for heat exchange of cold water energy, and is divided into a raw water tank 22 (a sand settling tank 22a and a cold water tank 22b). In this case, the cold water tank 22 b) and the pump 26 are communicated with each other through a pipe line 32, and the pump 26 and the heat exchanger 30 are communicated with each other through a pipe line 34. Further, the heat exchanger 30 and the water supply pipe header 14 communicate with each other through a pipe line 36. Note that reference numeral 28 in FIG. 1 indicates a strainer for removing dust and the like in cold water.

  The operation of the snow cooling heat supply system 10 configured as described above will be described. First, water is supplied from the water supply pipe header 14 to the snowy mountain 16. What is supplied is water that has been heat-exchanged and warmed. As shown in FIG. 4, water is supplied from four sides of the snowy mountain pit 12 and a large number of “water channels” are formed on the lower surface of the snowy mountain 16, so that a contact area between water and snow is ensured, and snow is melted efficiently. The melted cold water flows into the water collection tank 20 from the water collection port 12f. At that time, since the bottom walls 12c and 12e of the snowy mountain pit 12 are inclined, the cold water quickly reaches the water collecting port 12f. Cold water is pumped from the water collection tank 20 through the raw water tank 22 to the heat exchanger 30 by the pump 26. And the heat energy obtained by heat exchange in the heat exchanger 30 is supplied to a cooling facility (not shown) or the like. On the other hand, the water heated by the heat exchange is supplied again from the water supply pipe header 14 through the pipe 36. By repeating this step, it is possible to efficiently acquire the cold energy of the snow.

  In addition, since the water level of the water collection tank 20 and the water level of the raw water tank 22 (sedimentation tank 22a) become the same, the state of the snow mountain 16 inside the snowy mountain pit 12 can be accurately grasped by monitoring the water level of the raw water tank 22. be able to. Therefore, for example, when it is determined that the water level of the raw water tank 22 is too low, the pumping of the cold water to the heat exchanger 30 is interrupted, and the water level of the water collecting tank 20 is raised and brought into contact with the lower surface of the snowy mountain 16. Thereby, the contact area of water and snow is ensured, and the operation | movement of the snow-cooling heat supply system 10 can be controlled favorably.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say, it is something.

  For example, although the snow mountain pit 12 is shown as having a rectangular planar shape in the embodiment, the snow mountain pit may be formed in another shape such as a cylindrical shape. In addition, the number of the water supply pipe headers 14, the arrangement locations, the arrangement intervals, and the like are merely exemplary, and numbers and intervals other than those illustrated may be employed.

It is the schematic diagram which showed the whole snow-cooled heat supply system which concerns on preferable embodiment of this invention. It is the enlarged view which showed the part 2 of FIG. It is the top view which showed the snowy mountain pit of the snow cooling heat supply system of FIG. It is the figure which showed the mode of the water path formed in a snowy mountain pit.

DESCRIPTION OF SYMBOLS 10 Snow cold heat supply system 12 Snow mountain pit 12c, 12e Bottom wall 12f Water collection port 14 Water supply piping header 16 Snow mountain 18 Sheet | 30 Heat exchanger 32, 34, 36 Pipe line

Claims (6)

A snowy mountain pit with a bottom wall with a water collection port in the middle,
A snowy mountain which is disposed above the snowy mountain pit and serves as a source of cold energy;
A water collecting tank disposed below the snowy mountain pit and communicating with the water collecting port;
A raw water tank disposed adjacent to the snowy mountain pit;
A large number of water supply piping headers arranged around the snowy mountain pit,
Cold water obtained by supplying water to the snowy mountain from the water supply pipe header and exchanging heat between water and snow is pumped to the heat exchanger via the water collection tank and the raw water tank, and heat exchange is performed in the heat exchanger. The snow-cooled heat supply system is characterized in that cold energy is obtained by repeating the step of supplying heat-exchanged water to the water supply pipe header. The water tank and the raw water tank communicate with each other via a pipe line, and the water tank is configured to be able to acquire information on the water level of the water tank by monitoring the water level of the raw water tank. The system of claim 1. The system according to claim 1 or 2, wherein the bottom wall of the snowy mountain pit is formed so as to form a gentle downward gradient toward the water collection port. The system according to any one of claims 1 to 3, wherein the snowy mountain is covered with a sheet, and all or a part of the sheet is formed of a heat insulating material. The system according to claim 4, wherein an upper surface of the sheet is formed of a material having high light reflectance. 6. The system according to claim 4, wherein a weight is attached to an appropriate portion of the sheet in order to prevent the sheet from scattering.

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