KR100773871B1 - The district heat system to get a additional electric power by utilizing of auxiliary boiler of the district heat system - Google Patents

The district heat system to get a additional electric power by utilizing of auxiliary boiler of the district heat system

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Publication number
KR100773871B1
KR100773871B1 KR1020060080183A KR20060080183A KR100773871B1 KR 100773871 B1 KR100773871 B1 KR 100773871B1 KR 1020060080183 A KR1020060080183 A KR 1020060080183A KR 20060080183 A KR20060080183 A KR 20060080183A KR 100773871 B1 KR100773871 B1 KR 100773871B1
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South Korea
Prior art keywords
district heating
hot water
heating system
generator
heat exchanger
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KR1020060080183A
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Korean (ko)
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박승조
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코리아코젠(주)
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D10/00—District heating systems
    • F24D10/003—Domestic delivery stations having a heat exchanger
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D12/00—Other central heating systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/13—Heat from a district heating network
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/17—District heating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/10—Applications of fuel cells in buildings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/14—Combined heat and power generation [CHP]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
    • Y02P80/14—District level solutions, i.e. local energy networks

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)

Abstract

A district heating system for getting an additional electric power by utilizing an auxiliary boiler of the district heating system is provided to increase operating rate of the district heating system by additionally installing an overheating vapor generator, a vapor turbine, a generator and a heat exchanger combined with a condenser, and obtain economic gain by generating and selling high priced electricity to an electric power company. A district heating system for getting an additional electric power by utilizing an auxiliary boiler of the district heating system comprises a plurality of boilers(B1,B2,B3,B4). A cogeneration system consisted of an overheating vapor generator(11) and a vapor turbine(12), a generator(13), and a heat exchanger(14) combined with a condenser are equipped in the auxiliary boiler(B4) among the plurality of the boilers. Exhaust heat generated in the cogeneration system is supplied to the heat exchanger combined with the condenser, provided to consumed places(22) as hot water, and allows the generator to generate electricity.

Description

지역 난방 시스템의 보조 보일러를 활용하여 부산전기를 얻기 위한 지역 난방 시스템{The district heat system to get a additional electric power by utilizing of auxiliary boiler of the district heat system}District heating system to get a additional electric power by utilizing of auxiliary boiler of the district heat system}

도1 본 발명에 의한 지역 난방 시스템의 개략도1 is a schematic diagram of a district heating system according to the present invention

도2 통상의 지역 난방 시스템의 개략도2 Schematic diagram of a typical district heating system

본 발명은 지역난방(district heating) 시스템에서 운영되는 다수개의 보조보일러 중 일측의 보조보일러에 과열증기발생기, 증기터빈, 발전기와 복수기겸용열교환기를 구비하여 온수 생산과 동시에 부산전기를 생산하는 지역 난방 시스템에 관한 것이다.The present invention is a district heating system for producing hot water and at the same time by producing a hot water by providing a superheated steam generator, a steam turbine, a generator and a condenser combined heat exchanger in one of the plurality of auxiliary boilers operating in district heating system (district heating) It is about.

지역난방(district heating)은 대규모의 열 생산시설에서 경제적으로 생산된 열을 일정 지역 전체에 일괄 공급하는 도시기반 시설로 에너지 절감 효과와 공해 감소 효과를 얻는 획기적인 난방 방식이라 할 수 있다.District heating is a city-based facility that supplies economically produced heat from a large-scale heat production facility to an entire area. It is a revolutionary heating method that can save energy and reduce pollution.

지역난방을 보다 구체적으로 설명하면, 아파트 단지나, 공업 단지, 비즈니스 건물 등 각종 건축물에 개별 난방이나 중앙 난방 시설을 설치하는 대신에 집중 된 대규모 열발생 플랜트를 이용하여 일정 지역 전체에 난방과 급탕용 온수를 공급하는 도시기반시설(Infra-structure)의 난방 방식이다.In more detail, district heating is used for heating and hot water supply throughout a certain area by using concentrated large-scale heat generation plants instead of installing individual heating or central heating facilities in various buildings such as apartment complexes, industrial parks, and business buildings. It is the heating method of the infrastructure that supplies hot water.

지역 난방 시스템의 장점 및 단점은 다음과 같다.The advantages and disadvantages of district heating systems are as follows.

지역 난방의 장점Advantages of district heating

1) 고효율의 열원 설비와 폐열 배열을 이용하므로 에너지가 절감된다.1) Energy is saved by using high efficiency heat source equipment and waste heat arrangement.

2) 설비의 집중화로 경제적인 운영관리가 용이하고 건축 공사비가 절감된다.2) With the centralization of facilities, economical operation management is easy and construction cost is reduced.

3) 특정 지역에 대규모 보일러가 다수 개 설치되어, 온수를 생산하므로 보일러 운전 효율이 좋으며, 대규모 시설로 인한, 운전 효율이 높게 된다.3) Since a large number of large-scale boilers are installed in a specific area to produce hot water, the boiler operation efficiency is good and due to the large-scale facility, the operation efficiency is high.

4) 대규모로 온수를 발생하므로 보일러에서 발생 되는 대기 오염 물질을 총괄적으로 집진하여 처리함으로, 대기 오염을 방지하는 효과를 갖게 된다.4) Since hot water is generated on a large scale, by collecting and treating air pollutants generated in a boiler collectively, it has an effect of preventing air pollution.

5) 재해나 화재 등의 위험도가 낮아 안전성이 높게 된다.5) High safety due to low risk of disaster or fire.

지역 난방의 단점Disadvantages of District Heating

1) 설비의 대형화로 초기 투자비가 많게 된다.1) The initial investment will be high due to the larger facilities.

2) 대형 플랜트를 형성하므로 저 부하인 경우 조절이 곤란한 단점을 갖는다. (이를 방지하기 위해 보일러를 다수 개 설치하여, 저 부하시 선택적으로 보일러를 가동하게 된다.)2) Since a large plant is formed, it is difficult to control in case of low load. (To prevent this, several boilers are installed to selectively run the boiler at low load.)

3) 플랜트와 먼 곳에 위치한 열 수요처는 난방 효과가 낮게 된다.3) Heat sources located far from the plant will have less heating effect.

4) 배관이 길어지므로 열 손실이 많게 된다.4) The longer the pipe, the greater the heat loss.

이와 같이 지역 난방 시스템은 상기와 같은 단점을 갖게 되지만 시설의 집중화에 의한 경제적인 운영과 고 효율로 인한 보다 많은 장점을 가지므로 국가적 으로부터 볼 때 에너지 절감 효과와, 일반 열 수요처는 싼 가격으로 온수를 얻을 수 있는 경제적인 난방 방식이라 할 수 있다.As such, district heating systems have the above disadvantages, but they have more advantages due to economical operation and high efficiency due to the centralization of facilities. It is an economical heating method that can be obtained.

지역 난방에 있어서, 온수를 생산하는 보일러는 저압 보일러를 사용하며 사용연료로는 가스(LPG, 또는 LNG)를 사용하여 온수를 생산하게 된다.In district heating, hot water producing boilers use low pressure boilers and use fuel gas (LPG or LNG) to produce hot water.

저압 보일러를 이용한 온수 생산 방식은 다른 방식에 비하여 초기 투자비가 적게 들며, 열 수요와 연계하여 다수개의 증기 보일러를 단계적으로 설치가능하므로 투자에 탄력성을 갖게 되며, 열 수요에 의해 능동적으로 온수를 생산할 수 있게 된다.The hot water production method using low pressure boiler has lower initial investment cost compared to other methods, and it is possible to install a plurality of steam boilers in stages in connection with the heat demand, thereby making the investment flexible and actively producing hot water by the heat demand. Will be.

한국의 지리적 특성에 따른 연중 기온 분포를 살펴볼 때 11, 12, 1, 2월의 동절기에는 영하의 낮은 기온 분포를 가지며, 6, 7, 8, 9월의 하절기에는 20℃ 이상의 높은 기온을 갖는 것을 볼 수 있다. The annual temperature distribution according to the geographic characteristics of Korea shows that the temperature distribution is below freezing during the winter months of November, December, January, and February, and the high temperature above 20 ℃ in the summer months of June, July, August, and September. can see.

따라서, 동절기에는 온수 사용량이 많게 되며, 하절기에는 온수 사용량이 적게 되므로 보일러의 온수 생산량은 동절기와, 하절기에 따라 큰 폭의 변화되는 것을 볼 수 있다.Therefore, the amount of hot water used in winter is high, and the amount of hot water used in summer is decreased so that the hot water production of the boiler varies greatly depending on the winter season and the summer season.

이와 같이 동절기의 많은 온수 수요에 대비하여 지역 난방에 있어서는 보조보일러를 용량별로 다수 개 설치하여, 동절기에는 설치된 모든 보조보일러를 가동하여 온수 생산량을 증대시키며, 하절기에는 다수개의 보조보일러 중 일부의 보조보일러만 가동하여 최소한의 온수를 생산 공급하게 된다.As such, in order to meet the demand for hot water in winter, a large number of auxiliary boilers are installed for each district heating, and in winter, all auxiliary boilers are operated to increase hot water production, and in summer, some auxiliary boilers are used. It will operate only to produce and supply the minimum amount of hot water.

이와 같이 설치된 다수개의 보조보일러를 모두 사용하지 못하는 것은 앞에서 지적한 지역 난방 시스템의 단점 중의 하나라 할 수 있다.Failure to use all of the multiple auxiliary boilers installed in this way is one of the disadvantages of the district heating system.

본 발명은 지역 난방 설비에 있어서 설치되는 다수개의 보조보일러 중 하나에 과열증기발생기와 증기 터빈과 발전기 및 복수기겸용 열교환기를 구비하여, 부산전기를 생산하여 보조보일러의 가동 효율 증대를 꾀하며, 온수생산과 동시에 전기를 생산토록 하는 지역 난방 시스템을 제공하는 것이다.The present invention is equipped with a superheated steam generator, a steam turbine, a generator and a condenser heat exchanger in one of a plurality of auxiliary boilers installed in district heating facilities, to produce the Busan electric electricity to increase the operation efficiency of the auxiliary boiler, hot water production and At the same time, it provides a district heating system that produces electricity.

이와 같은 본 발명은 지역 난방과 전기를 자체적으로 생산하는 열병합 발전을 이용한 지역 난방 시스템과 유사할 수 있다.The present invention may be similar to district heating systems using cogeneration, which produces district heating and electricity by itself.

기존 열병합 발전을 이용하여 지역 난방 수행하는 난방 시스템은 자체 열병합 발전기와, 이를 구동하는 고압 보일러 및 전용 증기 터빈을 가지며, 발전과 동시에 발생 되는 배열로 지역 난방을 실시하는 것이라 할 수 있다.The heating system that performs district heating by using the existing cogeneration system has its own cogeneration generator, a high-pressure boiler and a dedicated steam turbine to drive it, and can be said to perform district heating in an arrangement generated at the same time as the power generation.

그러나 본 발명은 지역 난방을 위한 시스템에 있어서 온수 수요가 많은 동절기를 대비하여 설치하는 다수개의 보조보일러에 있어서, 그 중 하나에 과열도를 갖는 증기를 발생하는 과열증기발생기와, 증기터빈 발전기 및 복수기겸용 열교환기를 설치하여, 부산전기를 생산하는 것으로, 기설치되는 지역 난방 저압 보일러를 이용하여 발전하는 것이다. 이와 같은 본 발명은 지역 난방 설비의 가동 효율을 증대시키는 것으로, 기존의 고온, 고압 증기방식의 열병합 발전을 이용한 지역 난방 시스템과는 차이가 있으며, 또한 기존의 지역난방시스템의 효율을 증대시킨 보다 향상된 지역난방시스템이라 할 수 있다.However, the present invention relates to a plurality of auxiliary boilers installed in preparation for winter season when hot water demand is high in a system for district heating, one of which includes a superheated steam generator, a steam turbine generator and a condenser for generating steam having a superheat degree. By installing a combined heat exchanger to produce Busan Electric, it is to generate electricity by using a pre-installed district heating low pressure boiler. The present invention is to increase the operation efficiency of district heating equipment, and is different from the existing district heating system using the cogeneration of high temperature, high pressure steam system, and further improved the efficiency of the existing district heating system It can be called district heating system.

본 발명의 발명자는 열병합 발전에 의한 난방 시스템을 개발한 바 있으며, 본 발명자에 의해 개발되어 특허 등록된 것으로는, 특허 제10-383,559호 "열병합 발전을 이용한 소규모 지역 난방 시스템", 특허 제10-568,753호 "열병합 발전을 이 용한 지역 난방 시스템"가 있다.The inventor of the present invention has developed a heating system by cogeneration, and has been developed and patented by the present inventor, Patent No. 10-383,559 "Small Area Heating System Using Cogeneration", Patent No. 10- 568,753 "District Heating System Using Cogeneration."

또한, 제3자에 의해 특허 등록된 것으로는 특허 제10-393,394호 "열병합 발전을 이용한 저온수-연속식 지역 난방시스템"을 볼 수 있다.In addition, as a patent registered by a third party, Patent No. 10-393,394 "cold water-continuous district heating system using cogeneration" can be seen.

본 발명은 기존의 지역 난방 시스템이나, 혹은 신설되는 지역 난방 시스템에 있어서, 설치되는 다수개의 저압용 보조보일러 중 하나 보조보일러에 과열증기발생기 터빈 및 발전기와 복수기겸용 열교환기를 구비하여 부산전기를 생산하여 지역난방시스템의 에너지 효율 증대 및 설비 운용의 증대를 꾀하는 것이다.The present invention, in the existing district heating system, or the newly installed district heating system, one of the plurality of low-pressure auxiliary boilers installed in the auxiliary boiler with a superheated steam generator turbine and generator and a multi-component heat exchanger to produce Busan Electric The aim is to increase the energy efficiency of the district heating system and increase the operation of facilities.

본 발명의 지역 난방 시스템에 있어서 온수를 많이 사용하는 동절기에는 보일러의 운전 효율이 높은 반면에 온수의 사용량이 적은 하절기에는 시설의 활용도 낮게 되므로 효과적으로 설비를 활용하지 못하는 것을 감안하여 이를 해결하고자 개발된 것이다.In the district heating system according to the present invention, the boiler has a high operating efficiency in winter, but the utilization of the facility is low in summer, when the amount of hot water is used is low. .

즉, 본 발명은 지역 난방 시스템에 있어서 가장 중요하여 큰 비중을 차지하는 보일러가 동절기에는 다량의 온수를 생산하므로 활용도가 높으나, 하절기에는 온수의 사용량이 적어 활용도가 낮아 시설을 효과적으로 사용 내지 운영하지 못하는 것을 감안하여, 지역 난방의 온수를 생산하기 위해 다수개의 보조보일러를 설치하는 것에 있어서, 하나의 보조보일러에 저압 증기를 고압 증기로 변화하는 과열증기발생기와, 증기 터빈 및 발전기와 복수기겸용 열교환기를 설치하여 기 설치된 온수 생산용 보조저압보일러를 활용하여 발전토록 하여 온수를 생산함과 동시에 저렴하게 전기를 생산하여 설비의 활용도를 극대화하는 지역 난방 시스템의 제공을 목 적으로 개발된 것이다.In other words, the present invention is the most important in the district heating system, the boiler which takes up a large proportion of the hot water in the winter season because of the high utilization, but the use of the hot water is low in the summer, the utilization of the facility can not effectively use or operate the facility In view of the above, in the installation of a plurality of auxiliary boilers to produce hot water for district heating, a superheater generator for converting low pressure steam into high pressure steam, a steam turbine, a generator, and a condenser heat exchanger are installed in one auxiliary boiler. The purpose was to provide a district heating system that maximizes the utilization of facilities by producing hot water at the same time and generating electricity by utilizing auxiliary low pressure boilers for the production of hot water.

일정 지역에 난방 온수 및 급탕 온수를 생산하기 위하여 다수개의 보조보일러(B1)(B2)(B3)(B4)를 구비하며, 상기 보조보일러(B1)(B2)(B3)(B4)에서 생산한 온수를 열교환기(21)를 거쳐 열수요처(22)인 수용가로 온수를 제공하며, 열교환기(21) 일측에 응축수저장탱크(23)와 보충수공급라인(24)과, 탈기장치(25)를 갖는 지역 난방 시스템에 있어서A plurality of auxiliary boilers (B1), (B2), (B3) and (B4) are provided to produce heating hot water and hot water for heating in a predetermined area, and are produced by the auxiliary boilers (B1), (B2), (B3) and (B4). The hot water is supplied to the consumer, which is a heat demand 22 through the heat exchanger 21, and the condensate storage tank 23 and the supplemental water supply line 24 and the degassing apparatus 25 on one side of the heat exchanger 21. In district heating system with

상기 다수개의 보조보일러 중 일측의 보조보일러(B4)에, 과열증기발생기(11)와 증기터빈(12)으로 구성된 열병합시스템과 발전기(13) 및 복수기겸용열교환기(14)를 구비하여, 상기 열병합시스템에서 발생 되는 배열은 상기 복수기겸용열교환기(14)로 공급되어 열수요처로 온수로 제공하며 발전기(G)에 의해 전기를 생산토록 하는 지역 난방 시스템에 관한 것이다.The cogeneration system composed of a superheated steam generator 11 and a steam turbine 12, a generator 13, and a plurality of combined heat exchangers 14 are provided in the auxiliary boiler B4 on one side of the plurality of auxiliary boilers. The arrangement generated in the system relates to a district heating system which is supplied to the condenser combined heat exchanger 14 to provide hot water as a heat source and to produce electricity by the generator G.

이와 같은 구성을 갖는 본 발명을 보다 상세히 설명하면 다음과 같다.Referring to the present invention having such a configuration in more detail as follows.

일반적으로 지역 난방 시스템에 있어서는 온수 사용이 많은 동절기를 대비하여 다수개의 보조보일러(B1)~(B4)를 설치하여, 동절기에는 설치한 모든 보조보일러(B1)~(B4)를 가동하여 온수를 생산하며, 하절기에는 난방용 온수를 생산할 필요가 없으므로 단지 급탕용 온수를 생산하기 위하여 최소한의 보조보일러를 가동하게 된다. 이와 같이 설치되는 다수개의 보조보일러 중 하나의 보조보일러(B4)에 과열증기발생기(11)를 부착하여 고온 및 고압의 증기를 생산하게 된다.In general, in the district heating system, a plurality of auxiliary boilers (B1) to (B4) are installed in preparation for the winter season in which hot water is used, and in winter, all auxiliary boilers (B1) to (B4) are operated to produce hot water. In summer, there is no need to produce hot water for heating, so only a minimum auxiliary boiler is operated to produce hot water for hot water supply. The superheated steam generator 11 is attached to one auxiliary boiler B4 of the plurality of auxiliary boilers installed as described above to produce steam of high temperature and high pressure.

즉, 통상적으로 지역 난방을 위해 설치하는 보일러는 저압증기(14㎏/㎠급)를 발생하는 저압온수보일러(HOB:Heating only Boiler)로, 증기터빈을 구동할 수 없게 된다.That is, a boiler installed for district heating is a low pressure hot water boiler (HOB) that generates low pressure steam (14 ㎏ / ㎠), and cannot operate a steam turbine.

따라서 지역 난방 시스템에 설치하는 통상의 저압용 보조보일러 중 하나의 보조보일러에 과열증기발생기(11)를 설치하여, 증기터빈(12)을 구동할 수 있는 고온 고압 증기로 가열하고, 증기터빈(12)으로 발전기(13)를 구동하여 전기를 생산하도록 하는 것이다.Therefore, the superheated steam generator 11 is installed in one of the ordinary low pressure auxiliary boilers installed in the district heating system, heated by high temperature and high pressure steam capable of driving the steam turbine 12, and the steam turbine 12 By driving the generator 13 to produce electricity.

이와 같은 본 발명은 하절기 중에는 사용하지 않는 보일러를 가동하여 전기를 생산하므로, 지역 난방 시스템의 설비 활용도를 증가시키며, 저가격으로 전기를 생산하게 되는 것이다.Such the present invention is to operate the boiler not used during the summer to produce electricity, thereby increasing the utilization of the facility of the district heating system, it is to produce electricity at a low price.

상기 과열증기발생기(11)와 증기터빈(12)을 거쳐 나온 증기는 고온 고압이므로 이를 바로 열교환 시킬 수 없으므로 저온 저압의 증기로 바꾸는 복수기겸용 열교환기(14)를 거쳐 열수요처(22)로 온수를 제공하게 된다.Since the steam passed through the superheated steam generator 11 and the steam turbine 12 is a high temperature and high pressure, it cannot be directly heat-exchanged, so hot water is supplied to the heat demand 22 through a heat exchanger 14 for a condenser combined with a low temperature low pressure steam. Will be provided.

전기의 단가는 94.3원/kwh로, LNG 또는 LPG를 주원료로 사용하는 지역난방보조보일러에 있어서는 저가의 연료를 고가의 전기를 생산할 수 있으므로 인해, 지역난방 시스템에 본 발명을 적용할 시 2-3년 안에 발전을 위해 설치하는 과열증기발생기나 증기터빈, 발전기 비용 및 이를 설치하기 위해 소요되는 제반 비용을 회수할 수 있게 된다.The unit price of electricity is 94.3 won / kwh. In the district heating subsidiary boiler using LNG or LPG as the main raw material, the low cost fuel can produce expensive electricity. Within a year, the cost of superheated steam generators or steam turbines and generators for power generation and the costs of installing them will be recovered.

주지된 바와 같이 일정 지역의 난방 및 급탕용 온수를 제공하는 지역 난방 시스템은, 많은 공간을 차지하는 것을 볼 수 있으며 사회 기반 시설로 보다 경제적 으로 운영되어야 한다. 그러나 실제로 한국과 같이 동절기와 하절기의 기온 차가 큰 경우에 있어서는, 동절기의 온수 사용량을 기준으로 시설을 준비해야 하기 때문에 하절기에 있어서는 시설물을 100% 가공하지 않는 것을 볼 수 있으며 이로 인해 시설 이용률이 낮다 할 것이다. 이와 같은 기존 또는 신설되는 지역 난방 시스템에 있어서 본 발명에서와 같이 과열기와 증기터빈, 발전기 및 복수기겸용열교환기를 추가로 설치할 경우 지역 난방시스템의 가동률을 증대시키며, 고가의 전기를 생산하여 자체 사용하거나, 전력회사(한전)에 공급함으로 인해 경제적인 이득을 얻을 수 있게 되는 아주 유용한 발명인 것이다.As is well known, district heating systems that provide local heating and hot water for hot water can take up a lot of space and should be operated more economically as social infrastructure. However, when the temperature difference between winter season and summer season is large, like in Korea, it is necessary to prepare facilities based on the amount of hot water used during winter season, so the facilities are not processed 100% in summer. will be. In such existing or newly installed district heating system, when additionally installing a superheater, a steam turbine, a generator, and a condenser combined heat exchanger as in the present invention, the operation rate of the district heating system is increased, and expensive electricity is produced and used by itself, It is a very useful invention that can benefit economically by supplying power company (KEPCO).

Claims (1)

일정 지역에 난방 온수 및 급탕 온수를 생산하기 위하여 다수개의 보일러(B1)(B2)(B3)(B4)를 구비하며, 상기 보조보일러(B1)(B2)(B3)(B4)에서 생산한 온수를 열교환기(21)를 거쳐 열수요처(22)인 수용가로 온수를 제공하며, 열교환기(21) 일측에 응축수저장탱크(23)와 보충수공급라인(24)과, 탈기장치(25)를 갖는 지역 난방 시스템에 있어서,A plurality of boilers B1, B2, B3, and B4 are provided to produce heating hot water and hot water for heating in a predetermined area, and hot water produced by the auxiliary boilers B1, B2, B3, and B4. To provide the hot water to the consumer of the heat demand 22 through the heat exchanger 21, the condensate storage tank 23, the supplemental water supply line 24 and the degassing device 25 on one side of the heat exchanger (21) In district heating system having, 상기 다수개의 보일러 중 일측의 보조보일러(B4)에, 과열증기발생기(11)와 증기터빈(12)으로 구성된 열병합시스템과 발전기(13) 및 복수기겸용열교환기(14)를 구비하며, 상기 열병합시스템에서 발생 되는 배열은 상기 복수기겸용열교환기(14)로 공급되어 열수요처로 온수로 제공하며 발전기(13)에 의해 전기를 생산토록 하는 것을 특징으로 하는 지역 난방 시스템의 보조 보일러를 활용하여 부산전기를 얻기 위한 지역 난방 시스템.The auxiliary boiler B4 of one of the plurality of boilers includes a cogeneration system composed of a superheated steam generator 11 and a steam turbine 12, a generator 13, and a combined heat exchanger 14 and the cogeneration system. The heat generated from the supply is supplied to the multi-purpose combined heat exchanger (14) to provide hot water as a heat source and to produce electricity by the generator 13 by utilizing the auxiliary boiler of the district heating system, Busan Electric District heating system for obtaining.
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