CN201652989U - Device for realizing area refrigeration and heating hybrid supply by heat and power cogeneration coupled with heat pumps - Google Patents

Device for realizing area refrigeration and heating hybrid supply by heat and power cogeneration coupled with heat pumps Download PDF

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Publication number
CN201652989U
CN201652989U CN2010201800143U CN201020180014U CN201652989U CN 201652989 U CN201652989 U CN 201652989U CN 2010201800143 U CN2010201800143 U CN 2010201800143U CN 201020180014 U CN201020180014 U CN 201020180014U CN 201652989 U CN201652989 U CN 201652989U
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China
Prior art keywords
heat
triple valve
site
heat pump
cold
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Expired - Fee Related
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CN2010201800143U
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Chinese (zh)
Inventor
张永生
于刚
卞双
邢长燕
张光
鞠翠玲
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North China Electric Power University
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North China Electric Power University
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/27Relating to heating, ventilation or air conditioning [HVAC] technologies
    • Y02A30/274Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00Climate change mitigation technologies for sector-wide applications
    • Y02P80/10Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier

Abstract

The utility model relates to a device for realizing area refrigeration and heating hybrid supply by heat and power cogeneration coupled with heat pumps, which belongs to the field of energy use and energy-saving equipment. The system comprises a power plant turboset, a heating network heater, heat pumps, an ice storage system and accessory equipment which are connected by corresponding pipelines. By the aid of the cooperative action of heat and power cogeneration and the hear pumps, the device uses cooperative work of heat and power cogeneration and the hear pumps to supply living hot water and cold energy by a heating network of heat and power cogeneration for areas in summer besides realization of heating supply for the areas by heat and power cogeneration and the hear pumps in winter. The heat pump in a plant area adopts an absorption type and can also adopt a compression type; the heat pump outside the plant area adopts an absorption type; and the absorption type heat pump uses heat energy of heating network water or heating network steam to supply energy for a heat pump generator, thereby completing circulation of a heat pump system. The system sufficiently uses heating supply equipment and waste heat of traditional heat and power cogeneration to realize centralized heating and refrigeration supply for the areas, improves the efficiency of area refrigeration system process, and reduces energy consumption.

Description

A kind of cogeneration of heat and power coupling heat pump is realized regional heat and cold supplier
Technical field
The utility model belongs to using energy source and energy-saving equipment field, be particularly related to a kind of cogeneration of heat and power coupling heat pump and realize regional heat and cold supplier, this device has been realized central cooling, the heat supply in big zone by the coupling of power plant's cogeneration of heat and power and heat pump, has improved utilization efficiency of energy.
Technical background
Although the Energy Efficiency Ratio of one-level efficiency air-conditioning is more than 3.2 at present, the Energy Efficiency Ratio of air-conditioning is still lower.And owing to disperse refrigeration, the intermediate energy conversion links is many, has expended a large amount of electric power.
According to statistics, the output of China's room air conditioner in 2003 has reached more than 4,000 ten thousand, business air conditioner output and has reached more than 20 ten thousand covers, and about 100,000,000, national business air conditioner owning amount is about 1,200,000 covers for China's room air conditioner owning amount.2005 annual datas show that the year power consumption of China's domestic air conditioning is equivalent to 50% of the three gorges hydropower plant capacity more than 40,000,000,000 kilowatt hours.In peak of power consumption period in summer, air conditioning electricity load even up to about 40% of the overall power load in cities and towns.
Because air-conditioning power consumption is big, and service time is concentrated relatively, causes that peak of power consumption period electrical network pressure is big, the supply of electric power wretched insufficiency, is a main cause of power tense in summer.
On the other hand in power plant especially thermal power plant, evening, thermal power unit operation was not in design conditions work during the low power consumption underload, and economy is relatively poor.
Aspect cooling, except air-conditioning, heat pump also is a kind of mode that heat energy is provided of using always, it is to be the system and device that cost becomes useless low temperature heat energy useful high temperature heat by consuming a small amount of power or fuel, heat pump also can be realized central refrigerating, it has the Energy Efficiency Ratio higher than air-conditioning, and invests lowly, is easy to realize central cooling.But the power that compression heat pump need drive power consumption, absorption heat pump need expend heat, comes for absorption heat pump provides energy by burning in the conventional method, and high-grade energy heat supply is also uneconomical.
Realize in the space-heating system in the cogeneration of heat and power of routine, only operation in the heat supply in winter of heat supply network, summer equipment do not work and need certain maintenance.And in the reality summer certain thermic load demands such as domestic hot-water are also arranged, but less relatively, if the centralizedly supply cost is higher separately.
The utility model content
The purpose of this utility model is to concentrate separately for cooling, heat supply at available technology adopting air-conditioning or heat pump; The intermediate energy conversion links is many, expended a large amount of electric power, the deficiency that cost is higher, realize regional heat and cold supplier and propose a kind of cogeneration of heat and power coupling heat pump, it is characterized in that, this device comprises power plant steam turbine, heat exchangers for district heating, heat pump, ice-storage system and auxiliary device, adopts corresponding pipeline to connect to form; This system comprises power plant steam turbine, heat exchangers for district heating, heat pump, ice-storage system and auxiliary device, adopts corresponding pipeline to connect to form; Power plant's electric turbine 1 connects condenser 2 and 5, heat exchangers for district heatings of a heat exchangers for district heating 5 respectively and connects secondary heat exchangers for district heatings 7, and 7 of different secondary heat exchangers for district heatings connect by serial or parallel connection; Condenser 2 connects electric power plant circulating water cooling infrastructure 3 respectively and is connected the 3rd triple valve 12, the three triple valves 12 and is connected to the water return outlet of on-site heat pump 4 and the cold junction sender property outlet of on-site ice-storage system 6 respectively through water circulating pump; On-site heat pump 4 is connected to the cold junction working medium inlet of electric power plant circulating water cooling infrastructure 3 and on-site ice-storage system 6 respectively through the 4th triple valve 13; The cold and hot user 19 of plant area is connected to the outlet and the inlet of the cooling end of on-site ice-storage system 6 respectively by the 5th triple valve 14, the 6th triple valve 15.
Cold and hot user 19 of described plant area and on-site ice-storage system 6 also be connected second triple valve 11 by the 5th triple valve 14, and be connected with on-site heat pump 4 with electric power plant circulating water cooling infrastructure 3 respectively by second triple valve 11, electric power plant circulating water cooling infrastructure 3 is connected with condenser 2 by circulating pump again; The cold and hot user 19 of plant area also is connected first triple valve 10 by the 6th triple valve 15 with on-site ice-storage system 6, and is connected with on-site heat pump 4 with electric power plant circulating water cooling infrastructure 3 respectively by first triple valve 10.
Secondary heat exchangers for district heating 7 can be by the 8th triple valve 17, the 7th triple valve 16 and off-site absorption type heat pump system 8 being connected of compressibility 8-1, off-site absorption type heat pump system 8 connects off-site ice-storage system 9, off-site ice-storage system 9 directly is connected with the cold and hot user 18 of off-site, and the cold and hot user's 18 of off-site cold and hot input, output connect above-mentioned the 8th triple valve 17 and the 7th triple valve 16 respectively.
Described heat pump adopts absorption heat pump or adopts compression heat pump; If employing absorption heat pump, its thermal source are drawing gas or being provided by the hot net water of cogeneration of heat and power in the steam turbine; If the employing compression heat pump drive by small turbine or motor, and small turbine wherein drives by drawing gas of power plant steam turbine group; Condensed water in the heat pump is transported to power plant's cooling tower and cools off.
The beneficial effects of the utility model are the synergies by cogeneration of heat and power and heat pump, make full use of existing heating equipment and waste heat, heat supply network by cogeneration of heat and power, provide cold and domestic hot-water to the user, realize the regional heating cooling, improve the efficient of refrigeration system process, reduced energy consumption.
Description of drawings
Fig. 1 is heat pump coupling co-generation unit and heat supply and cooling flow schematic diagram;
The specific embodiment
The utility model proposes a kind of cogeneration of heat and power coupling heat pump and realize regional cold-hot combined supply system.Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is heat pump coupling co-generation unit and heat supply and cooling flow schematic diagram.This system comprises power plant steam turbine group, heat exchangers for district heating, heat pump, ice-storage system and auxiliary device, adopts corresponding pipeline to connect to form; This system's heat supply and refrigeration work flow process are that power plant's electric turbine 1 steam discharge enters condenser 2 condensations as shown in the figure, and cooling circulating water enters 3 coolings of electric power plant circulating water cooling infrastructure; The heat supply of on-site and refrigeration realize by power plant's on-site heat pump 4.Winter, the part or all of high temperature circulation water that comes out from condenser 2 entered power plant's on-site heat pump 4 through the 3rd triple valve 12 when heating, and emitted heat after the 4th triple valve 13 returns electric power plant circulating water cooling infrastructure 3; The elevated temperature heat remittance abroad current of power plant's on-site heat pump 4 enter the heat exchanger of cold and hot user's 19 sides of plant area of power plant through second triple valve 11, the 5th triple valve 14, and its backwater is got back to 4 heating of on-site heat pump through the 6th triple valve 15, first triple valve 10; The heat of heat supply network is provided by drawing gas of steam turbine outside the power plant, can adopt in the power plant heat exchangers for district heating 5 heating to provide hot water also can directly provide steam, entrained subsequently heat enters secondary heat exchangers for district heating 7, its hot water or steam enter hot user through the 8th triple valve 17, emit heat after the 7th triple valve 16 returns 7 heating of secondary heat exchangers for district heating; Summer, the cycle fluid of ice-storage system 6 entered power plant's on-site heat pump 4 through the 3rd triple valve 12 in the power plant when freezing, and emitted the cooling that is cooled behind the heat, returns in the power plant ice-storage system 6 through the 4th triple valve 13 cold is stored; The cold of storage enters the cold and hot user 19 of plant area of power plant by the cycle fluid of heat release side through the 5th triple valve 14, and cycle fluid is emitted cold after the 6th triple valve 15 returns ice-storage system 6 in the power plant at user side; The cooling water of electric power plant circulating water cooling infrastructure 3 converges through the elevated temperature heat that first triple valve 10 enters power plant's on-site heat pump 4, and its water outlet is flowed through and entered electric power plant circulating water cooling infrastructure 3 behind second triple valve 11 and cool off; The heat of heat supply network is provided by drawing gas of steam turbine 1 outside the power plant, can adopt in the power plant heat exchangers for district heating 5 heating to provide hot water also can directly provide steam, entrained subsequently heat enters secondary heat exchangers for district heating 7, its hot water or steam enter the generator 8-1 that off-site absorption type heat pump system 8 heats its compressibilities through the 8th triple valve 17, return secondary heat exchangers for district heating 7 after the heating; The heat that the low-temperature heat source of off-site absorption type heat pump system 8 absorbs cycle fluid in the off-site ice-storage system 9 reduces its temperature and cold is stored the cold of off-site ice-storage system 9 and then the cold and hot user 18 of power plant's off-site who supplies with by the circulating water of heat release side in off-site ice-storage system 9.
Described heat pump adopts absorption heat pump or adopts compression heat pump; If employing absorption heat pump, its thermal source are drawing gas or being provided by the hot net water of cogeneration of heat and power in the steam turbine; If the employing compression heat pump drive by small turbine or motor, and small turbine wherein drives by drawing gas of power plant steam turbine group; Condensed water in the heat pump is transported to power plant's cooling tower and cools off.
Embodiment 1
Steam enters 1 acting of power plant's electric turbine among the embodiment 1, and the steam discharge in the steam turbine 1 send water to boiler after entering condenser 2 condensations.The recirculated cooling water of condenser 2 extracts from electric power plant circulating water cooling infrastructure 3, and temperature raise after recirculated water entered condenser 2 participation heat exchange.
Winter, the part or all of high temperature circulation water that condenser comes out entered power plant's heat pump 4 through the 3rd triple valve 12 when heating, and emitted heat after the 4th triple valve 13 returns electric power plant circulating water cooling infrastructure 3; The elevated temperature heat remittance abroad current of power plant's on-site heat pump 4 are through near the heat exchanger of the hot user side the 5th triple valve 14 enters power plant again behind second triple valve 11, and its backwater is got back to heat pump through the 6th triple valve 15 and first triple valve 10; The heat of heat supply network is provided by drawing gas of steam turbine outside the power plant, can adopt in the power plant heat exchangers for district heating 5 heating to provide hot water also can directly provide steam, entrained subsequently heat enters secondary heat exchangers for district heating 7, its hot water or steam enter the cold and hot user 18 of off-site through the 8th triple valve 17, emit heat after the 7th triple valve 16 returns 7 heating of secondary heat exchangers for district heating.
During summer, the refrigeration of plant area's near zone realizes that by ice-storage system 6 associated working in power plant's on-site heat pump 4 and the power plant refrigeration in the zone far away apart from plant area realizes by off-site absorption type heat pump system 8 and 9 associated working of off-site ice-storage system.
At last, it is also to be noted that what more than enumerate only is specific embodiment of the utility model, obviously is not limited to above embodiment, and many distortion can also be arranged.
Above-mentioned embodiment all can only be thought can not limit the utility model to explanation of the present utility model, and claims have been pointed out scope of the present utility model, and scope of the present utility model is not all pointed out in above-mentioned explanation.Therefore, in implication suitable and any change in the scope, all should think to be included in the scope of claims with claims of the present utility model.

Claims (3)

1. a cogeneration of heat and power coupling heat pump is realized regional heat and cold supplier, it is characterized in that, this device comprises power plant steam turbine, heat exchangers for district heating, heat pump, ice-storage system and auxiliary device, adopts corresponding pipeline to connect to form; Power plant's electric turbine (1) connects a condenser (2) and a heat exchangers for district heating (5) respectively, and a heat exchangers for district heating (5) connects secondary heat exchangers for district heating (7), connects by serial or parallel connection between different secondary heat exchangers for district heatings (7); Condenser (2) connects electric power plant circulating water cooling infrastructure (3) respectively and is connected the 3rd triple valve (12) through water circulating pump, and the 3rd triple valve (12) is connected to the water return outlet of on-site heat pump (4) and the cold junction sender property outlet of on-site ice-storage system (6) respectively; On-site heat pump (4) is connected to the cold junction working medium inlet of electric power plant circulating water cooling infrastructure (3) and on-site ice-storage system (6) respectively through the 4th triple valve (13); The cold and hot user of plant area (19) is connected to the outlet and the inlet of the cooling end of on-site ice-storage system (6) respectively by the 5th triple valve (14), the 6th triple valve (15).
2. described cogeneration of heat and power coupling heat pump is realized regional heat and cold supplier, it is characterized in that, cold and hot user of plant area (19) and on-site ice-storage system (6) also be connected second triple valve (11) by the 5th triple valve (14), and be connected with on-site heat pump (4) with electric power plant circulating water cooling infrastructure (3) respectively by second triple valve (11), electric power plant circulating water cooling infrastructure (3) is connected with condenser (2) by circulating pump again; The cold and hot user of plant area (19) also is connected first triple valve (10) by the 6th triple valve (15) with on-site ice-storage system (6), and is connected with on-site heat pump (4) with electric power plant circulating water cooling infrastructure (3) respectively by first triple valve (10).
3. described cogeneration of heat and power coupling heat pump is realized regional heat and cold supplier, it is characterized in that, secondary heat exchangers for district heating (7) can pass through being connected of compressibility (8-1) of the 8th triple valve (17), the 7th triple valve (16) and off-site absorption type heat pump system (8), off-site absorption type heat pump system (8) connects off-site ice-storage system (9), off-site ice-storage system (9) directly is connected with the cold and hot user of off-site (18), and the cold and hot user's of off-site (18) cold and hot input, output connect the 8th triple valve (17) and the 7th triple valve (16) respectively.
CN2010201800143U 2010-04-29 2010-04-29 Device for realizing area refrigeration and heating hybrid supply by heat and power cogeneration coupled with heat pumps Expired - Fee Related CN201652989U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103335467A (en) * 2013-07-15 2013-10-02 深圳市燃气集团股份有限公司 LNG energy comprehensive utilization system
CN110186214A (en) * 2019-05-10 2019-08-30 上海交通大学 The multi-mode cool and thermal power integral system of waste heat driving

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103335467A (en) * 2013-07-15 2013-10-02 深圳市燃气集团股份有限公司 LNG energy comprehensive utilization system
CN110186214A (en) * 2019-05-10 2019-08-30 上海交通大学 The multi-mode cool and thermal power integral system of waste heat driving
CN110186214B (en) * 2019-05-10 2020-07-14 上海交通大学 Waste heat driven multi-mode cooling, heating and power integrated system

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