JP6450068B2 - Snow-fed type heat supply control system - Google Patents

Description

  The present invention relates to a snow exhaust utilization type heat supply control system suitable for cooling a data center using snow removal and utilizing waste heat from the data center.

  Conventionally, in cold districts, snow is transported to a snow accumulation area with a large amount of snow removal costs, and then left to melt as it is, so that cold energy is wasted. On the other hand, in the IT industry, with the development of cloud computing, etc., the number of data centers is increasing. Servers and other IT devices placed in the data center are damaged or degraded due to a large amount of heat generated during operation. Therefore, the air conditioning management for processing these heats is very expensive.

  Note that, for example, Japanese Unexamined Patent Application Publication No. 2012-184864 (Patent Document 1) describes a method for suppressing the operation cost for air conditioning management in an air conditioning system in which a plurality of types of heat source devices are mixed depending on the server load status and the outside air condition. Thus, an air conditioning system is disclosed in which the type and number of heat source devices to be operated are determined so that the overall operation cost is substantially minimized, and the start and stop of each heat source device is controlled.

JP 2012-184864 A

  However, the air conditioning system disclosed in Patent Document 1 is a mechanism that cools warm air discharged from the server room and returns it to the server room. For this reason, a large amount of energy is required for cooling the air once heated, and there is a problem that a large data center or the like requires enormous air conditioning costs. In addition, some of the warm air discharged from the server room is discharged outside the building, and waste heat is discarded without being used, and there is also a problem of adversely affecting the environment such as global warming.

  Further, in the air conditioning system, after the cooled air is sent out from under the floor of the server room, the air heated by cooling the server is sucked in and discharged from the upper part of the server room. For this reason, the degree of cooling is uneven between the upper and lower sides of the server room, and there is a problem that the cooling efficiency is poor.

  The present invention has been made to solve such problems, and by using the snow drainage of the snow accumulation site as a cold heat source and using the waste heat of the data center as a heat source, An object of the present invention is to provide a snow supply type heat supply control system that can reduce air conditioning costs and improve energy efficiency.

  The snow supply utilizing heat supply control system according to the present invention includes a heat supply control device that controls the supply of cold and hot heat via a liquid heat medium, and a cold heat from the snow accumulated in the snow accumulation area to the liquid heat medium. A heat recovery device that recovers the heat, a plurality of servers, a data center that recovers the heat from the waste heat of each server to a liquid heat medium, and a heat utilization facility that uses the heat recovered in the data center The heat supply control device supplies the cold energy recovered from the cold energy recovery device to the data center, and supplies the heat energy recovered from the data center to the heat utilization facility.

  As one aspect of the present invention, the heat supply control device may supply the cold energy recovered from the cold energy recovery device to the heat utilization facility to control the temperature.

  As one aspect of the present invention, a server room provided in a data center is partitioned into a cold air supply room and a warm air recovery room with a server rack in which servers are stored as a boundary, and the data center is cooled by cold heat. In addition to supplying the air to the cool air supply chamber, the air heated by cooling the server may be recovered as warm heat from the warm air recovery chamber.

  As one aspect of the present invention, a snow exhaust utilizing heat supply control system has an outside air heat exchanging unit that collects cold heat from outside air via a liquid heat medium, and the heat supply control device has an outside air temperature of a server room. When the temperature is higher than the set temperature, the cold heat collected from the snow is supplied. When the outside air temperature is lower than the set temperature, the cold heat collected by the outside air heat exchange unit may be supplied.

  According to the present invention, the snow supply utilizing heat supply control system uses the snow drainage of the snow accumulation site as a cooling heat source and uses the waste heat of the data center as a heating heat source, thereby reducing the heating and cooling costs. Energy efficiency can be improved.

It is a block diagram which shows energy supply in the snow supply type heat supply control system which concerns on this invention. 1 is an overall view showing an embodiment of a snow exhaust utilizing heat supply control system according to the present invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a snow exhaust utilizing heat supply control system 1 according to the present invention will be described with reference to the drawings. In the present invention, the term “snow drainage” is a concept that includes not only snow accumulated in a snow accumulation site by snow removal work but also ice.

  As shown in FIGS. 1 and 2, the snow supply utilizing heat supply control system 1 according to the present embodiment mainly collects cold heat from a heat supply control device 2 that controls supply of cold and hot heat, and snow discharge 71. And a data center 4 that recovers the heat from the waste heat of the server 41, and a heat utilization facility 5 that uses the heat recovered at the data center 4. Hereinafter, the configuration according to the present embodiment will be described in detail.

  As shown in FIG. 2, the heat supply control device 2 according to the present embodiment is provided with a cold water circuit 21 and a hot water circuit 22, and a plurality of heat exchangers 23 a to 23 g in each of the circuits 21 and 22. Is provided. The cold water circuit 21 and the hot water circuit 22 are configured by tubular members in which a liquid heat medium is enclosed. Further, the heat supply control device 2 includes a temperature control device 24, and the temperature control device 24 circulates the liquid heat medium in each circuit 21, 22 by controlling the circulation pump 25 and the automatic control valve 26. At the same time, the supply of cold and hot heat to the cold energy recovery device 3, the data center 4 and the heat utilization facility 5 is controlled. In the present invention, the liquid heat medium includes all liquid heat medium, and in this embodiment, an antifreeze liquid is used.

  Under the control of the heat supply control device 2, in the chilled water circuit 21, the cold heat recovered by the cold heat recovery device 3 is recovered by heat exchange through the liquid heat medium by the heat exchanger 23 a and recovered. Cold heat is supplied to the data center 4 via the heat exchanger 23b. On the other hand, in the hot water circuit 22, the heat recovered in the data center 4 is recovered by heat exchange through the liquid heat medium by the heat exchanger 23c, and the recovered heat is heated through the heat exchanger 23d. It is supplied to the use facility 5. Moreover, in this embodiment, the heat supply control apparatus 2 supplies the cold energy collect | recovered with the cold energy recovery apparatus 3 to the heat | fever utilization facility 5 with the heat exchanger 23e, and performs temperature control.

  Moreover, the cold-heat recovery apparatus 3 which concerns on this embodiment has the cold-heat propagation pipe 31 provided with the heat exchange pipe 31a in the middle, as shown in FIG. Specifically, the cold heat propagation pipe 31 is filled with a liquid heat medium so that it circulates between the heat supply control device 2 and the snow discharge accumulation place 7 by the circulation pump 25 controlled by the temperature control device 24. It is piped in. In addition, a cold water tank 73 having a permeable pavement 72 on the surface for removing impurities such as earth and sand contained in the snow exhaust 71 passes through only the cold water that has melted the snow exhaust 71 through the lower part of the snow exhaust accumulation place 7. Has been. A plurality of heat exchange tubes 31 a are laid at the bottom of the cold water tank 73.

  In the above configuration, in the present embodiment, the cold heat is recovered from the cold water in the cold water tank 73 by the liquid heat medium in the heat exchange pipe 31a. Further, the liquid heat medium recovered from the cold heat is transferred through the cold heat propagation pipe 31 and supplied to the heat supply control device 2, and heat exchange is performed by the heat exchanger 23 a to supply cold heat to the cold water circuit 21. Furthermore, the liquid heat medium that has been heated after the heat exchange is transferred through the cold propagation pipe 31 and flows into the heat exchange pipe 31a again. In FIG. 2, the solid line portion indicates that the cold heat is propagated, and the broken line portion indicates that the hot heat is propagated.

  Further, the cold energy recovery apparatus 3 according to the present embodiment has not only the cold heat propagation pipe 31 but also a cold water transfer pipe 32 through which cold heat is propagated by directly transferring cold water as shown in FIG. . Specifically, a water collecting tank 74 for storing a certain amount of cold water is provided at the lower portion of the cold water tank 73, and a certain amount of cold water is further transferred to the place where the cold water is transferred from the water collecting tank 74. A water collecting tank 75 is provided. A cold water transfer pipe 32 to which cold water is transferred is provided between the water sampling tank 75 and the heat supply control device 2, and the cold water transferred from the water sampling tank 75 by the submersible pump 33 is supplied with heat. Heat is exchanged by the heat exchanger 23 f of the control device 2, and cold heat is supplied to the cold water circuit 21.

  Further, as shown in FIG. 2, an upstream water port 73 a that communicates with the inside of the cold water tank 73 is provided on the upstream side of the cold water tank 73, and a cold water transfer pipe that is piped from the water sampling tank 75 to the heat supply control device 2. 32 is further piped from the heat exchanger 23f of the heat supply control device 2 to the ring water port 73a. And the cold water transferred from the water sampling tank 75 is heat-exchanged with a liquid heat medium in the heat exchanger 23f of the heat supply control apparatus 2, is warmed, and is transferred to the ring water port 73a. The hot water transferred to the ring water port 73a flows into the cold water tank 73 from the ring water port 73a and is cooled by being deprived of heat by the snow mass in the cold water tank 73 until reaching the water collecting tank 74 again. In the cold water tank 73, in order to keep the water level of the cold water constant, the overflow water is discharged from the discharge port 73b when the water level exceeds a predetermined height.

  In addition, as shown in FIG. 2, the snow discharge accumulation place 7 according to the present embodiment is covered with the chip material 76 that is a heat insulating material so that the snow discharge 71 on the surface of the snow mountain is not melted even in the summer. Yes. The heat insulating material is not limited to the chip material 76, and other materials may be adopted, and if necessary, a large temporary building may be constructed and covered.

  Next, the data center 4 according to the present embodiment has a plurality of server rooms 42, and each server room 42 is provided with a server rack 43 in which a plurality of servers 41 are accommodated. Each server room 42 is partitioned into a cool air supply chamber 44 and a warm air recovery chamber 45 with a server rack 43 as a boundary, as shown in FIG. Specifically, the server rack 43 is installed such that the housing front surface 43 a faces the cold air supply chamber 44 and the housing back surface 43 b faces the warm air collection chamber 45. A cold air supply port 44a for supplying cold air to the cold air supply chamber 44 is provided on the floor surface of the cold air supply chamber 44. Above the side wall of the warm air recovery chamber 45, a warm air recovery port 45a for recovering warm air is provided. Is provided. The number of server racks 43 provided in each server room 42 may be one rack or a plurality of racks.

  Further, the data center 4 is provided with a cold heat supply pipe 46 and a heat recovery pipe 47 filled with a liquid heat medium, which are circulated between the heat supply control device 2 and each server room 42 by a circulation pump 25. Yes. The liquid heat medium in the cold heat supply pipe 46 is cooled by the heat exchanger 23 b provided in the cold water circuit 21 of the heat supply control device 2 and supplied to the data center 4. A heat radiation coil 46 a for radiating cold heat is provided in the middle of the cold heat supply pipe 46 and below each server room 42. In this heat radiation coil 46a, a part of the cold heat supply pipe 46 is formed in a coil shape so as to facilitate heat dissipation, and the air taken into the data center 4 is cooled by this heat radiation coil 46a. Cold air is blown out from the cold air supply port 44 a of the supply chamber 44. Then, the liquid heat medium in the cold heat supply pipe 46 that has been heated and radiated by the heat radiating coil 46 a is transferred again to the heat exchanger 23 b of the heat supply control device 2.

  On the other hand, a heat recovery coil 47 a for recovering heat from the warm air recovered from the warm air recovery port 45 a of the warm air recovery chamber 45 is provided in the middle of the heat recovery pipe 47. The heat recovery coil 47a is a part of the heat recovery pipe 47 formed in a coil shape to facilitate heat recovery, and the heat recovered by the heat recovery coil 47a is stored in the heat supply control device 2. It is supplied to the hot water circuit 22 by the heat exchanger 23c. Then, the liquid heat medium in the heat recovery pipe 47 deprived of heat by heat exchange is transferred again to the data center 4.

  Next, in the heat utilization facility 5 according to the present embodiment, as shown in FIG. 2, a heat propagation pipe 51 is circulated between the heat supply control device 2 and the heat utilization facility 5 by the circulation pump 25. ing. The heat propagation pipe 51 is filled with a liquid heat medium, and the temperature control device 24 controls an automatic control valve 26 such as a three-way valve, whereby the heat exchanger 23e of the cold water circuit 21 or the heat exchange of the hot water circuit 22 is performed. It is configured to be switchable and connectable to any of the devices 23d. And by control of the heat supply control apparatus 2, cold heat or warm heat is supplied to the heat utilization facility 5 in a switchable manner. Note that the heat utilization facility 5 includes a housing / public facility, a plant factory, an aquaculture facility, and the like, and the heat supply control device 2 performs temperature control such as room temperature, water temperature, and ground temperature.

  By the way, the snow exhaust utilizing heat supply control system 1 according to the present embodiment includes not only the snow exhaust 71 but also the outside air heat exchanging unit 6 that collects cold heat from outside air through a liquid heat medium. Specifically, as shown in FIG. 2, an outside air cooling / heating pipe 61 is piped between the heat supply control device 2 and the outside air heat exchange unit 6. Then, the liquid refrigerant sealed in the cold air pipe 61 for outside air is circulated by the circulation pump 25 to provide cold heat to the heat exchanger 23g of the chilled water circuit 21.

  In the above configuration, the temperature control device 24 of the heat supply control device 2 is configured to remove the snow from the snow 71 by the cold heat recovery device 3 during the summer, spring or autumn days when the outside air temperature is higher than the set temperature of the server room 42, for example. The collected cold energy is supplied to the data center 4 and the heat utilization facility 5. On the other hand, in winter, spring or autumn night when the outside air temperature is lower than the set temperature of the server room 42, control is performed so that the cold energy collected by the outside air heat exchanging unit 6 is supplied to the data center 4 and the heat utilization facility 5. .

  Next, the operation of the snow exhaust utilizing heat supply control system 1 according to the present embodiment will be described.

  In the winter, the snow that has accumulated in each region is collected as snow removal 71 in the snow accumulation site 7, and if a snowy mountain is formed by a sufficient amount of snow removal 71, the snowy mountain is formed by the tip material 76 in order to make the snow difficult to thaw. Covered. In the lower part of the snow accumulation place 7, impurities such as earth and sand contained in the snow 71 are removed by the permeable pavement 72, and only cold water that has melted the snow 71 passes, and the cold water is stored in the cold water tank 73. The Here, the permeable pavement 72 has a role as a filter for removing impurities such as earth and sand contained in the snow drainage and a role for protecting the heat exchange pipe 31 a laid in the cold water tank 73.

  Next, in the cold energy recovery device 3, the liquid heat medium in the heat exchange pipe 31 a laid in the cold water tank 73 exchanges heat with the cold water in the cold water tank 73 to recover the cold heat. On the other hand, in the heat supply control device 2, the temperature control device 24 controls the circulation pump 25 to circulate the liquid heat medium in the cold heat propagation pipe 31, and exchanges heat with the heat exchanger 23a. Thereby, the cold energy which the snow drainage 71 holds is efficiently collect | recovered by the cold water circuit 21. FIG. In addition, the liquid heat medium that has received heat from the cold water circuit 21 is transferred through the cold heat propagation pipe 31 and flows into the heat exchange pipe 31a again, and recovers cold heat from the cold water in the cold water tank 73 again.

  Further, in the present embodiment, the cold energy recovery device 3 controls the submersible pump 33 to collect the cold water transferred from the water collecting tank 74 to the water collecting tank 75 and stored in the cold water transfer pipe 32, and The heat is supplied to the heat exchanger 23f of the heat supply control device 2. Thereby, the cold energy which snowmelt water holds is efficiently collect | recovered by the cold water circuit 21. FIG. Further, the water deprived of cold heat by the cold water circuit 21 is transferred through the cold water transfer pipe 32 and flows in from the ring water port 73a of the cold water tank 73, and again in the cold water tank 73 until reaching the water collecting tank 74 again. Heat is taken away by the snow mass and cooled.

  Next, the temperature control device 24 of the heat supply control device 2 controls the circulation pump 25 to circulate the liquid heat medium having the cold recovered from the cold heat recovery device 3 in the cold water circuit 21 and in the cold heat supply pipe 46. Circulate the liquid heat medium. Thus, the cold heat of the liquid heat medium in the cold water circuit 21 is supplied to the liquid heat medium in the cold heat supply pipe 46 by the heat exchanger 23b.

  On the other hand, in the data center 4, the liquid heat medium circulated in the cold heat supply pipe 46 radiates the cold heat by the heat radiating coil 46 a provided below each server chamber 42, and cools the air taken into the data center 4. To do. Accordingly, since cold air is supplied from the cold air supply port 44 a of the cold air supply chamber 44, the cold air is sucked from the housing front surface 43 a of the server rack 43 to cool the server 41. The liquid heat medium radiated by the heat radiating coil 46a is circulated in the cold heat supply pipe 46, and cold heat is again provided from the heat exchanger 23b.

  Further, since the warm air warmed by the waste heat of the server 41 is discharged from the housing back surface 43b to the warm air recovery chamber 45, the heat recovery coil 47a recovers the heat from the warm air to the liquid heat medium. Thus, by dividing the server room 42 into the cool air supply chamber 44 and the warm air recovery chamber 45 with the server rack 43 as a boundary, it becomes difficult for the cool air and warm air to be mixed in the server room 42, and the cooling efficiency of the server 41 is increased. In addition, higher energy heat can be recovered from the warm air recovery chamber 45. Furthermore, since the front surface 43a of the housing of the server rack 43 faces the cold air supply chamber 44 side, the server administrator can operate and manage the server 41 in the cold air supply chamber 44, so that temperature management is easy. And work in a comfortable environment.

  On the other hand, the temperature control device 24 of the heat supply control device 2 controls the circulation pump 25 to circulate the liquid heat medium having the heat recovered in the data center 4 in the heat recovery pipe 47. Thereby, the heat recovered in the liquid heat medium in the heat recovery pipe 47 is supplied to the liquid heat medium in the hot water circuit 22 by the heat exchanger 23c. In addition, the liquid heat medium cooled by providing warm heat to the hot water circuit 22 is transferred again to the heat recovery coil 47a to recover the warm heat.

  Further, the heat supply control device 2 supplies either the cold energy recovered from the cold energy recovery device 3 or the warm energy recovered from the data center 4 to the heat utilization facility 5. That is, the temperature control device 24 switches the automatic control valve 26 provided in the heat propagation pipe 51 to either the heat exchanger 23e provided in the chilled water circuit 21 or the heat exchanger 23d provided in the hot water circuit 22. By connecting to, cold heat or warm heat is supplied to the liquid heat medium in the heat propagation pipe 51.

  The liquid heat medium supplied with cold or warm heat from the heat supply control device 2 circulates in the heat propagation pipe 51 by the circulation pump 25 controlled by the temperature control device 24 and is transferred to the heat utilization facility 5. Thereby, for example, when the heat utilization facility 5 is a residential / public facility, the heat supply control device 2 supplies either cold or hot based on the temperature set in the air conditioner in the residential / public facility. The air conditioning control is performed by the cold energy or the thermal energy transmitted to the housing / public facilities. Further, when the heat utilization facility 5 is a plant factory, the heat supply control device 2 can perform temperature control of the ground temperature as well as air conditioning control such as housing and public facilities. Further, when the heat utilization facility 5 is an aquaculture facility, the temperature control of the water temperature can be performed by the heat supply control device 2.

  In the snow-exhaust-type heat supply control system 1 according to the present embodiment, as described above, when the outside air temperature is higher than the set temperature of the server room 42, such as during the summer, spring, or autumn day, The supply control device 2 supplies the cold energy collected from the cold energy recovery device 3 to the data center 4 and the heat utilization facility 5. On the other hand, when the outside air temperature is lower than the set temperature of the server room 42, such as in the winter, spring or autumn night, the outside air heat exchanging unit 6 collects the cold heat from the cold outside air by heat exchange, and the heat supply control device 2 is supplied to the data center 4 and the heat utilization facility 5 from the heat supply control device 2. Thus, a further energy saving effect can be acquired by combining snow cooling and outside air cooling.

As described above, according to the present invention, the following operational effects can be achieved.
1. By using the snow exhaust 71 of the snow accumulation site 7 as a cooling heat source and using the waste heat of the data center 4 as a heating heat source, the heating / cooling cost can be kept low and the energy efficiency can be improved.
2. The heat utilization facility 5 can be provided with both the cold heat from the snow exhaust 71 and the warm heat from the waste heat of the server 41.
3. By partitioning the server room 42 into the cool air supply chamber 44 and the warm air recovery chamber 45 with the server rack 43 as a boundary, the cooling efficiency of the server 41 in the data center 4 can be increased, and high energy can be generated from the waste heat of the server 41. The heat of the heat can be recovered.
4). Since the housing front surface 43a of the server rack 43 faces the cold air supply chamber 44 side, the server administrator can operate and manage the server 41 in the cold air supply chamber 44, so that temperature management is easy. You can work in a comfortable environment.
5. The energy saving effect can be improved by combining snow cooling and outside air cooling.

  In addition, the snow exhaust utilization type heat supply control system 1 which concerns on this invention is not limited to embodiment mentioned above, It can change suitably.

  For example, in the above-described embodiment, the heat medium enclosed in the cold water circuit 21, the hot water circuit 22, the cold heat propagation pipe 31, the cold heat supply pipe 46, the hot heat recovery pipe 47, the heat propagation pipe 51, and the cold air pipe 61 for outside air. A liquid heat medium such as antifreeze or fresh water is preferable, but is not limited thereto, and may be a gaseous heat medium such as air as long as it has a function as a heat medium.

DESCRIPTION OF SYMBOLS 1 Snow removal utilization type heat supply control system 2 Heat supply control apparatus 21 Chilled water circuit 22 Hot water circuits 23a-23g Heat exchanger 24 Temperature control apparatus 25 Circulation pump 26 Automatic control valve 3 Cold heat recovery apparatus 31 Cold heat propagation pipe 31a Heat exchange pipe 32 Cold water transfer pipe 33 Submersible pump 4 Data center 41 Server 42 Server room 43 Server rack 43a Housing front surface 43b Housing back surface 44 Cold air supply chamber 44a Cold air supply port 45 Warm air recovery chamber 45a Warm air recovery port 46 Cold heat supply tube 46a Radiation coil 47 Heat Recovery pipe 47a Heat recovery coil 5 Heat utilization facility 51 Heat propagation pipe 6 Outside air heat exchanging part 61 Outside air cooling / heat pipe 7 Snow removal accumulation area 71 Snow removal 72 Permeable pavement 73 Cold water tank 73a Circulating water port 73b Discharge port 74 Catchment 75 Sampling bowl 76 Chip material

Claims (4)

A snow drainage type heat supply control system that uses snow drainage accumulated in a snow drainage accumulation site by snow removal work as a cold heat source and uses waste heat of the data center as a heat source,
A heat supply control device for controlling supply of cold and warm heat via a liquid heat medium;
A cold energy recovery device for recovering cold energy to the liquid heat medium from snow accumulated in the snow accumulation site;
A data center for recovering heat from the waste heat of the server to the liquid heat medium;
An outside air heat exchanging unit that collects cold heat from outside air via the liquid heat medium;
A heat utilization facility that collects cold energy in the liquid heat medium by using the heat collected in the data center as heating;
The heat supply control device receives at least one of the cold energy recovered by the cold energy recovery device, the cold energy recovered by the outside air heat exchange unit, or the cold energy recovered by the heat utilization facility. A snow drainage-type heat supply control system having a temperature control device that performs switching control as cold heat supplied to the data center.   When the outside air temperature is higher than a set temperature of a server room provided in the data center, the temperature control device supplies the cold heat collected from the snow removal to the data center, and the outside air temperature is set to the set temperature. 2. The snow exhaust utilizing heat supply control system according to claim 1, wherein, when the temperature is lower than the temperature, the cold energy recovered by the outside air heat exchange unit is supplied to the data center. The server room provided in the data center is partitioned into a cool air supply chamber and a warm air recovery chamber with a server rack in which the server is stored as a boundary, and a front surface of the housing of the server rack is the cool air supply chamber. To the side,
3. The data center according to claim 1, wherein the data center supplies air cooled by cold heat to the cold air supply chamber and collects the air heated by cooling the server as hot heat from the warm air collection chamber. Described snow-fed heat supply control system. A cold water tank having a permeable pavement through which only cold water from which snow has melted passes is installed at the bottom of the snow drainage accumulation site, and the liquid heat medium flows into the bottom of the cold water tank. Heat exchange pipes are laid,
The cold heat recovery apparatus is provided with a cold propagation pipe that is piped so as to circulate between the heat supply control device and the snow-drainage site, and includes the heat exchange pipe in the middle. The snow supply type heat supply control system according to claim 3.

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