KR101753290B1 - Heat network system - Google Patents

Abstract

The present invention relates to a thermal network system. The thermal network system includes a thermal utilization station for storing heat utilizing heat energy and heat received from the outside and supplying the heat utilization source to the heat utilization source, A heat supply pipe for circulating the hot fluid and transferring the hot fluid to the heat utilization port or for recovering the fluid discharged from the heat utilization port; A central heat management unit formed to penetrate the supply pipe and heating the temperature of the heating fluid flowing through the inside of the heat supply pipe to a predetermined temperature, and a heat exchanger formed to be embedded in the ground and including a heat insulating material, To transfer the heated fluid to the thermal management station or to recover the fluid discharged from the thermal management station Is characterized by comprising a heat storage pipe. Therefore, heat can be supplied to the heat receptacle through the underground pipe, and heat can be efficiently supplied to the heat receptacle, and heat can be supplied without having a surface heat accumulating tank, thereby reducing costs and improving the appearance.

Description

Thermal network system {HEAT NETWORK SYSTEM}

The present invention relates to a thermal network system, and more particularly, to a system that can improve utilization of unexploited energy by storing heat in an underground pipe to construct a thermal network.

In the combined heat and power network (CHP), which supplies heat to the heat-consuming densely populated areas, in urban areas with high densities, expensive sites are required to provide heat storage tanks for heat storage. There is a limit to occur.

In addition, there is a problem of damaging the landscape of the area by installing the heat source equipment such as the heat storage tank on the ground.

Accordingly, there is a need for a system that can efficiently supply heat at the request of a heat consumer through a thermal network, and at the same time, can overcome the limitation of the site supply without harming the aesthetics of the ground.

Korean Patent Publication No. 2003-0005284

SUMMARY OF THE INVENTION The present invention is directed to a heat network system in which a heat storage tank is embedded in the ground without being disposed on the ground to efficiently supply and recover heat to a heat receiver to thereby reduce the cost of constructing a thermal network system, And to improve the efficiency of energy use by improving utilization.

A thermal network system according to an embodiment of the present invention includes a heat exchange system that receives heat from a heat supply piping or a cooling piping connected to a heat supply facility; And an independent heat source that generates energy independently to produce heat energy; and a heat receiver that receives heat from the heat exchange system or the independent heat source; A piping for flowing hot water, comprising: a heat storage piping system for supplying heat to the heat supply pipe by supplying heat to the heat supply pipe; And a heat supply system formed to penetrate the heat supply pipe to heat the temperature of the hot water flowing in the heat supply pipe to a set temperature, wherein the heat storage pipe system is configured to supply unused energy from the independent heat source Is stored and used.

A coolant pipe for circulating the coolant and circulating the coolant to the heat exchange system and a cooler for cooling the coolant flowing through the coolant pipe to a predetermined temperature, .

When the temperature of the hot fluid flowing inside the heat supply pipe is lower than the set temperature immediately after the heat fluid circulating in the heat supply pipe circulates in one direction and the heat is exchanged through the heat storage pipe system and the heat exchanger, The heating fluid flowing through the heat supply pipe bypasses the heat supply device and flows through the heat storage pipe system and the heat exchanger, If the temperature is lower than the predetermined temperature, the heat fluid flowing through the heat storage piping system flows through the heat supply facility.

And the temperature set in the heat supply equipment is 50 to 70 ° C.

And a heat exchanger for transferring the heat of the heat storage piping system to the heat supply pipe.

Characterized in that the cooler is an adsorption cooler or an absorption cooler.

The cooler further comprises a turbo chiller as an auxiliary.

The heat receptacle comprising a plurality of heat receptacles, wherein the heat exchange system comprises a plurality of heat exchange systems.

And the energy generated in the independent heat source is an exhaust gas.

The independent heat source generates the energy using a renewable energy source.

Further comprising a heat exchange system for exchanging heat with the heat supply pipe to receive the heat energy required for driving the cooler and providing the heat to the cooler.

According to this aspect, the thermal network system according to an embodiment of the present invention efficiently recovers the unused thermal energy that can not be used in the heat receptacle through the underground pipe and can be discarded, thereby efficiently supplying heat to the heat receptacle, The energy utilization efficiency of the entire system is improved.

By constructing a thermal network for efficiently supplying or recovering heat without providing a heat storage tank, it is possible to reduce thermal network construction cost and operation cost, and to improve the appearance of the system.

FIG. 1 is a diagram illustrating a schematic structure of a thermal network system according to an embodiment of the present invention. Referring to FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Hereinafter, a structure of a thermal network system according to an embodiment of the present invention will be described with reference to the accompanying drawings.

First, referring to FIG. 1, a thermal network system according to an embodiment of the present invention will be described. The thermal network system includes first to third column receivers 100, 200, 300 A central heating station 1 having a heat supply unit 30 as a main heat source equipment for supplying heat to each heat receiver, a cooler 40 and a heat exchanger 50, a cooling pipe 70, Piping 60, and a heat storage piping system 80.

In this regard, first, second, and third heat receptors 100, 200, and 300, which are a plurality of thermal receptors, are shown in FIG. 1 of the present invention as a first thermal receptacle 100, a second thermal receptacle 200, ), It is described as including three column capacities, but in other embodiments of the present invention, the number may be added if the configuration is connected to a thermal network system.

However, in an embodiment of the present invention with reference to FIG. 1, a description will be made with reference to a configuration including three thermocouples, and the description should not limit the number of thermocouples of the present invention.

The first to third heat receivers 100, 200, and 300 may include first to third independent heat sources 120, 220, and 320, which are independent heat sources of the main heat exchanger 50 of the central heat management station 1, But it is not limited thereto, and it is not limited thereto.

In this case, the first to third heat receptors 100, 200, and 300 may be provided with a heating heat load or a cooling heat load, which is a heat load generated in the customer, from an independent heat source, (70) or the heat supply pipe (60).

The first to third cafeterias 100, 200 and 300 are heat exchangers for selectively supplying a heat source from the cooling piping 70 or the heat supply piping 60, which are thermal networks connected to the central thermal management station 1, As the first to third heat exchange systems (110, 210, 310).

The first heat receiver 100 is connected to the first heat exchange system 110 and the second heat receiver 100 is connected to the first heat receiver 100. The first heat receiver 100 may be a first heat exchanger, And a first independent heat source 120. The first heat exchange system 110 is connected to the first independent heat source 120 through the first heat exchange unit 115 and is connected to the first independent heat source 120 ≪ / RTI >

In this case, the first heat receiver 100 may be a building receiving heat supply such as an apartment or a factory and may receive heat through a cooling pipe 70 or a heat supply pipe 60, 70 and 80 so as to utilize the unused thermal energy generated from the operation of the heat source 120 through the heat storage piping system 80.

At this time, the first heat exchange system 110 and the first independent heat source 120 may be provided for each generation formed in the first heat receptacle 100 or for a plurality of generations forming the first heat receptacle 100 Equipment, or facility.

The first heat exchange system 110 includes a first heat supply pipe 11 and a first heat supply pipe 12 which are connected to the heat supply pipe 60 of the heat network And the first heat exchange system 110 supplies hot water supplied from the first hot water supply pipe 11 as heat energy to the heat consumer.

The first hot water supply pipe 11 discharges hot water whose temperature has been lowered to the return pipe of the heat supply pipe 60 as heat energy is exchanged from the first heat exchange system 110 to the heat receiver.

The first heat exchanging system 110 receives the cold water supplied from the first heat exchanging pipe 12 and the cooling water supplied from the first heat exchanging system 12 through the cooling heat exchanger 110. In this case, And discharges the cold water whose temperature has been raised by the exchange of the cooling heat energy to the heat receiver to the return pipe of the cooling pipe 70. [

The first heat supply pipe 11 and the first heat supply pipe 12 are formed in the form of a branch pipe connected to the heat supply pipe 60 and the cooling pipe 70 connected to the central heating station 1 .

The first heat exchanging part 115 formed on one side of the first heat exchanging system 110 and the first independent heat exchanging part 120 is provided with a heat load required by the first heat receiving part 100 Heating heat load or cooling heat load) from the first independent heat source 120 without being transmitted from the heat supply pipe 60 or the cooling pipe 70 supplied from the central heat management station 1.

In one example, the first heat supply pipe 11, the first heat supply pipe 12, and the first heat exchange portion 115 formed in the first heat exchange system 110 are used to smoothly supply the fluid flowing inside the pipe A pump, and the like.

The first independent heat source 120 is formed in the first thermal housing 100 to manage the heat of the one heat exchange system 110 to produce or supply the heat required for the first thermal housing 100 When the plurality of first heat exchange systems 110 are formed, the first heat exchange systems 115 and the plurality of first heat exchange systems 110 are connected to each other.

In one example, the first independent heat source 120 may independently produce energy from a renewable energy source.

The first independent heat source 120 independently supplies excess thermal energy such as flue gas generated in the course of energy generation through a first heat transfer pipe 13 which is a branch pipe formed in the first independent heat source 120 To the piping system (80).

At this time, the first independent heat source 120 supplies heat to the fluid received from the heat storage piping system 80 through the first heat transfer piping 13 to raise the temperature of the fluid, and the first heat transfer piping 13 And discharges the heated fluid to the heat storage piping system 80. Accordingly, there is an effect that unheated thermal energy generated in the first heat receiver 100 can be stored and utilized in the heat storage piping system 80. At least one first heat exchange system (110) for receiving heat from a heat supply pipe (60) or a cooling pipe (70) connected to the central heat management station (1) A first heat source 120 for transferring heat to the system 110 or transferring unused energy to the heat storage piping system 80 and a first heat exchanger 115, The second heat receptacle 200 and the third heat receptacle 300 have the same configuration as the first heat receptacle 100, respectively.

More specifically, the second heat exchanger 200 includes at least one second heat exchange system 210, and the second heat exchange system 210 includes the second heat pipe 21 and the second heat pipe 22 And receives heat or cold heat from the piping associated with the central heating station 1 and receives heat energy from the second independent heat source 220 through the second heat exchanging unit 215. At this time, the unused thermal energy generated in the second independent heat source 220 is transferred to the heat storage piping system 80 through the second heat transfer pipe 23.

And, the third-row customer 300 also performs the same configuration and operation as the first and second customer 100, 200, and the same system is applied to any thermal consumer (not shown) that may be additionally formed something to do.

Although the structure of the second and third thermal housings 200 and 300 has been briefly described, the structure and role of the second and third thermal housings 200 and 300 are not limited to the first thermal housings 100 It should be interpreted as operating in a similar context to that described above.

1, in the components of the thermal network system according to an embodiment of the present invention, the heat supply equipment 30 will be described with reference to FIG. 1, wherein the heat supply equipment 30 is a heat supply pipe 60, and is a facility for producing the thermal energy required for the thermal power supply 100. The thermal power supply 60 generates and stores appropriate heat energy in accordance with the heat demand required by each customer, To the first to third heat exchange systems (110, 210, 310) formed in the first to third column houses (100, 200, 300)

The central heat management station 300 receives the operating status of the first to third independent heat sources 120, 220, and 320 from the first to third heat receivers 100, 200, As shown in FIG.

In this case, the heat supply pipe 60, which is a heat supply pipe, is a pipe for flowing the heat energy produced by the heat supply equipment 30 as a heat medium in the form of a fluid, It is not limited thereto.

The temperature of the fluid flowing inside the heat supply pipe 60 is adjusted to the temperature set by the heat supply equipment 30 when the heat supply pipe 60 as the heat supply pipe passes through the heat supply equipment 30. [

Preferably, immediately after the heat supply pipe 60 is heat exchanged with the heat storage pipe system 80 by the heat exchanger 50, if the temperature of the fluid flowing inside the heat supply pipe 60 is lower than the set value , The heat supply pipe 60 is controlled to pass through the heat source system of the heat supply equipment 30 along B to raise the temperature of the fluid flowing through the heat supply pipe 60 to a set temperature having sufficient heat supply capability, To the third column houses (100, 200, 300).

However, immediately after the heat supply pipe 60 is heat-exchanged with the heat storage pipe system 80 by the heat exchanger 50, the fluid flowing inside the heat supply pipe 60 flows through the first to third housings 100, 200, and 300, the heat supply pipe 60 is controlled to flow the fluid along the arrow A to prevent unnecessary fluid movement, thereby reducing the efficiency of the thermal network system .

That is, when the fluid flowing through the heat supply pipe 60 after the heat exchange with the heat storage pipe system 80 is higher than the set temperature, the fluid flowing through the heat supply pipe 60 flows into the heat source system of the heat supply equipment 30 It does not penetrate but branches to the arrow A to prevent unnecessary fluid movement.

In one example, the heat supply line 60 may divert the hot fluid to the first heat exchange system 110 of the first thermal housing 100 or recover the fluid from the first heat exchange system 110.

At this time, when the heat supply pipe 60 branches the heating fluid to the first heat exchange system 110 of the first heat receiver 100, the heating fluid is branched in the pipe passing the heat supply facility 30, The fluid recovered to the heat supply line 60 after being used in the first heat exchange system 110 is preferably recovered to the heat supply line 60 located before passing through the heat supply line 30. [

At this time, the fluid recovered from the first heat exchange system 110 to the heat supply pipe 60 is cooled down after the temperature of the heat fluid branched from the first heat exchange system 110 is used from the heat supply pipe 60 May be one fluid.

Similarly to the configuration in which the heat supply pipe 60 supplies the heating fluid to the first heat exchange system 110 of the first heat exchange system 100 or the fluid is recovered from the first heat exchange system 110, The second heat exchange system 210 of the two-row heat exchanger 200 and the third heat exchange system 310 of the third heat exchanger 300 form a similar relationship to perform the interactions.

When the heat supply pipe 60 branches and supplies the heat fluid to the first to third heat exchange systems 110, 210 and 310, the first to third heat exchange systems 110, 210 and 310 When the first to third heat pipes 11, 21 and 31 are used and the fluid is recovered to the heat supply pipe 60 in the first to third heat exchange systems 110, 210 and 310, To third heat pipe (11, 21, 31) are used.

The heat supply pipe 60 is designed to pass through the inside of the heat exchanger 50 and is supplied with heat from the heat storage pipe system 80 when passing through the heat exchanger 50. The fluid flowing through the heat storage piping system 80 is cooled by a predetermined temperature before and after performing the heat exchange operation of the heat exchanger 50 by the amount of heat supplied from the heat exchanger 50 to the heat supply pipe 60 And then the fluid flows in such a way that the temperature gradient is reduced by the circulating flow in the heat storage piping system 80.

At this time, the heat storage piping system 80 will be described in more detail. The heat storage piping system 80 forms a closed loop, and the fluid flowing therein can flow clockwise along the arrow direction.

As already described above, the heat storage piping system 80 is positioned to pass through the inside of the heat exchanger 50 and passes heat to the heat supply pipe 60 while passing through the heat exchanger 50.

In one example, the temperature of the heat that the heat storage piping system 80 transfers heat to the heat supply piping 60 may be about 50-70 < 0 > C.

At this time, the heat storage piping system 80 forms a heat insulating material outside the piping, thereby preventing the temperature of the fluid flowing inside the heat storage piping system 80 from dropping.

The heat storage piping system 80 is formed to be buried in the ground and is connected to the first to third independent heat sources 120, 220, and 320 of the first to third heat receivers 100, The unused energy generated in the first to third independent heat sources 120, 220, and 320 can be easily recovered to overcome the limit in which the unused energy can not be circulated in the thermal network system including the existing thermal storage tank, The efficiency can be improved.

At this time, the heat storage piping system 80 supplies the heating fluid to the first independent heat source 120 through the first heat transfer pipe 13 as described above with reference to the first independent heat source 120, The first independent heat source 120 receives the heated fluid heated by performing the heat exchange with the exhaust gas generated during the operation of the independent heat source 120.

In one example, the first heat transfer conduit 13 conveys a constant temperature fluid flowing through the heat storage piping system 80 into the first independent heat source 120 along the direction of the arrow, To the heat storage piping system (80).

The first heat transfer piping 13 is configured to transfer the heat fluid flowing through the heat storage piping system 80 to the first independent heat source 120 to transfer heat and to recover the fluid from the first independent heat source 120 The second heat transfer piping 23 and the third heat transfer piping 33 transfer the hot fluid flowing through the heat storage piping system 80 to the second independent heat source 220 and the third independent heat source 320, And heat is collected to recover the heat, and the unused energy is recovered from the second or third independent heat sources 220 and 320, respectively, to be transferred to the heat storage piping system 80 and stored unused heat energy.

The cooler 40 reduces the temperature of the fluid flowing through the cooling pipe 70 by cooling the fluid inside the cooling pipe 70 which is a pipe passing through the inside of the cooler 40.

In one example, the cooler 40 may be formed of an adsorber or an absorption cooler. In addition, the turbo-type cooler may be used as an auxiliary if necessary.

Further, in one example, a cooler driven by low-temperature heat energy, for example, an absorption-type cooler, can exchange heat with the heat supply pipe 60 to supply heat required for cold air production.

Further, in one example, it may further include a heat exchange system (not shown) for receiving the heat energy required for driving the cooler 40 from heat exchange with the heat supply pipe.

At this time, the cooling pipe 70 is connected to the first heat exchange system 110 of the first heat receiver 100 through the first heat pipe 12, Is connected to the second heat exchange system 210 of the second heat exchanger 200 and is connected to the third heat exchange system 310 of the third heat receiver 300 through the third heat pipe 32.

The first to third cold heat pipes 12, 22 and 32 branch at one point of the cooling pipe 70 passing through the cooler 40 and enter the first to third heat exchange systems 110, 210 and 310 And is received by the first to third heat exchange systems 110, 210, and 310 by receiving the cold and hot fluid flowing through the cooling pipe 70.

The first to third cold / hot water pipes 12, 22 and 32 discharge the fluid to the cooling pipe 70 formed at a point before the coolant 40 passes through the first to third cold / 22, and 32 are reintroduced into the cooler 40 to be circulated.

In the preferred embodiment, it is preferable that the cold fluid flowing in the cooling pipe 70 flows along the clockwise direction. Thus, the cold fluid passing through the cooler 40 and cooled to the set temperature is circulated through the first to third cold / , 22, 32 to the first to third heat exchange systems (120, 220, 320).

As described with reference to FIG. 1, the thermal network system according to an embodiment of the present invention has such a structure that the heat storage piping system 80, which is an auxiliary device for supplying heat to the heat demanding heat, It is not necessary to provide a facility that occupies a large volume on the ground like a thermal storage tank. Therefore, it is possible to reduce the cost of constructing the thermal network system.

In addition, since the heat storage piping system 80 stores surplus heat and supplies the surplus heat at the request of the heat consumer, it is possible to efficiently distribute the heat in the thermal network system.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.

10: first heat receptacle 11: first heat pipe
12: first cooling pipe 13: first heat transfer pipe
20: second heat receptacle 21: second heat pipe
22: second cooling / heating pipe 23: second heat transfer pipe
30: third heat capacity 31: third heat pipe
32: third cooling / heating pipe 33: third heat transfer pipe
40: cooler 50: heat exchanger
60: heat supply pipe 70: cooling pipe
80: Heat storage piping

Claims (11)

A heat exchange system for receiving heat from a heat supply pipe or a cooling pipe connected to the heat supply equipment; And an independent heat source that generates energy independently to produce heat energy; and a heat receiver that receives heat from the heat exchange system or the independent heat source;
A piping for flowing hot water, comprising: a heat storage piping system for supplying heat to the heat supply pipe by supplying heat to the heat supply pipe; And
A heat supply device formed to penetrate the heat supply pipe and heating the temperature of hot water flowing in the heat supply pipe to a set temperature;
Wherein the heat storage piping system recovers, stores and utilizes unused energy from the independent heat source of the thermal consumer. The method according to claim 1,
A cooling pipe circulating the cooling fluid and delivering the cooling fluid to the heat exchange system; And
A cooler formed to penetrate the cooling pipe to cool the temperature of the cooling fluid flowing in the cooling pipe to a predetermined temperature;
Lt; RTI ID = 0.0 > 1, < / RTI > The method according to claim 1,
When the temperature of the hot fluid flowing inside the heat supply pipe is lower than the set temperature immediately after the heat fluid circulating in the heat supply pipe circulates in one direction and the heat is exchanged through the heat storage pipe system and the heat exchanger, , The heat fluid flowing through the heat supply pipe flows by bypassing the heat supply equipment,
When the temperature of the hot fluid flowing inside the heat supply pipe is less than the set temperature immediately after the heat is exchanged through the heat storage pipe system and the heat exchanger, the hot fluid flowing through the heat storage pipe system passes through the heat supply pipe Wherein the thermal network system comprises: The method according to claim 1,
Wherein the temperature set in the heat supply equipment is 50 to 70 占 폚. The method according to claim 1,
Further comprising a heat exchanger for transferring heat from the heat storage piping system to the heat supply piping. [Claim 6 is abandoned due to the registration fee.] 3. The method of claim 2,
Wherein the cooler is an adsorber cooler or an absorption cooler. [7] has been abandoned due to the registration fee. The method according to claim 6,
≪ / RTI > wherein the cooler further comprises a turbo chiller as an auxiliary. The method according to claim 1,
Wherein the thermal receptacle comprises a plurality of thermal receptacles, and wherein the heat exchange system comprises a plurality of heat exchange systems. The method according to claim 1,
Wherein the energy generated in the independent heat source is an exhaust gas. The method according to claim 1,
Wherein the independent heat source produces the energy using a renewable energy source. [Claim 11 is abandoned upon payment of the registration fee.] 3. The method of claim 2,
Further comprising a heat exchange system for exchanging heat with the heat supply pipe to supply the cooler with the heat energy required for driving the cooler.

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