CN108375101A - Hot-water type solar-energy air-energy cogeneration of heat and power integral system and operation method - Google Patents

Hot-water type solar-energy air-energy cogeneration of heat and power integral system and operation method Download PDF

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Publication number
CN108375101A
CN108375101A CN201810058193.4A CN201810058193A CN108375101A CN 108375101 A CN108375101 A CN 108375101A CN 201810058193 A CN201810058193 A CN 201810058193A CN 108375101 A CN108375101 A CN 108375101A
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China
Prior art keywords
water
heat
heating
working medium
pump
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张于峰
姚胜
吕大超
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Tianjin University
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Tianjin University
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D12/00Other central heating systems
    • F24D12/02Other central heating systems having more than one heat source
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03GSPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G6/00Devices for producing mechanical power from solar energy
    • F03G6/06Devices for producing mechanical power from solar energy with solar energy concentrating means
    • F03G6/065Devices for producing mechanical power from solar energy with solar energy concentrating means having a Rankine cycle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00Details
    • F24D19/10Arrangement or mounting of control or safety devices
    • F24D19/1006Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1009Arrangement or mounting of control or safety devices for water heating systems for central heating
    • F24D19/1045Arrangement or mounting of control or safety devices for water heating systems for central heating the system uses a heat pump and solar energy
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00Heat sources or energy sources
    • F24D2200/12Heat pump
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00Heat sources or energy sources
    • F24D2200/14Solar energy
    • 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
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/20Solar thermal
    • 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
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/70Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
    • 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
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • 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
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • Y02E10/46Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines

Abstract

The invention discloses a kind of hot-water type solar-energy air-energy cogeneration of heat and power integral systems, including water tank, the first water pump, solar thermal collector, low level side heat exchanger, the difunctional head of compression-expansion, the generating integrated motor of permanent-magnet electric, high-order side heat exchanger, expansion valve, working medium pump and the second water pump;Low level side heat exchanger is using air-cooled, the Single port of low level side heat exchanger working medium side is by being connected to the Single port of high-order side heat exchanger working medium side after the difunctional head of compression-expansion, the another port of high-order side heat exchanger working medium side is parallel with two bypasses with the another port of low level side heat exchanger working medium side, by adjusting the on and off of valve, Heating Period heating can be realized using solar energy and air, non-heating period generates electricity, the building demand of annual supplying hot water;Air source heat pump is at low cost, and installation is simple, and efficiency is high, and environmental protection, preheating time is short, can quickly reach room temperature requirement, be suitable as the auxiliary thermal source of solar heating system.

Description

Hot-water type solar-energy air-energy cogeneration of heat and power integral system and operation method
Technical field
The invention belongs to solar-energy air-energies to utilize technical field more particularly to a kind of hot-water type solar-energy air-energy thermoelectricity Coproduction integral system.
Background technology
In recent years, as the sustainable development of Process of Urbanization Construction and people require not inhabitation, comfortable working environment It is disconnected to improve, the Fast Growth of building trade is welcome, building energy consumption shows the situation of lasting rising.The winter of northern area adopts Warm is the chief component of building energy consumption.Cut-off 2016, the urban and rural buildings heating gross area about 20,600,000,000 in the northern area of China is flat Square rice.Wherein, 14,100,000,000 square metres of town building heating area, 6,500,000,000 square metres of farm building heating area.The northern area of China Using the energy based on fire coal, coal-burning stove for heating area accounts for about the 83% of total heating area for heating.Heating consumes about 400,000,000 tons with coal year Coal is marked, about 200,000,000 tons of mark coals of coal (containing inefficient arcola coal) is burnt wherein dissipating, is mainly distributed on rural area.Northern area heat supply About 22 kilograms of average aggregate energy consumption mark coals/square metre, wherein about 19 kilograms of cities and towns mark coal/square metre, about 27 kilograms of rural area mark coal/ Square metre.Current the northern area of China cleaning heating ratio is low, and especially some areas winter largely burns coal using scattered, and air is dirty It is big to contaminate discharge capacity.Therefore actively push forward to clean heating, should be the current major tasks for administering northern area winter haze.
Solar energy is inexhaustible, nexhaustible, is to develop and utilize new energy and regenerative resource without exploitation and transport Important content, have huge market prospects.China's solar energy resources very abundant, 2/3rds regional annual radiant all quality More than 5020MJ/m2, year, sunshine time was in 2200h or more, the good condition utilized with effective exploitation.The heat of low-temperature solar energy Using being most direct scheme, development is also the rapidest, and solar water heater, heating technology etc. are increasingly by the weight of people Depending on.The main heating zone in China is in the north, and precisely solar energy resources are than more rich area.Especially in the season for needing heating Section, fine day is relatively more, and basic condition is provided for solar heating.Solar energy is suitble to be combined with other energy, realization hot water, The application for the hybrid system that heats, is that heat supply network effectively disperses heating system when can not cover.Especially suitable for office building, teaching building Deng the building diurnally used.In national 10 ministries and commissions publication《Northern area winter cleaning heating planning (2017-2021)》 Middle proposition will actively push forward merging for solar energy and conventional energy resource, and centralization and the mode of distributed combination is taken to be built Heating.Encouragement promotes solar energy heating system on the suitable Small Urban of condition, civilian and public building.Agricultural greenhouse, Farm etc. is big with heat demand, and with the matched industry of solar property, make full use of solar-heating.It strives for 2021 Year China solar heating area reaches 50,000,000 square metres of target.
When solar-heating heating system is set, from the point of view of economic benefit and heat stablize output, it is necessary to have auxiliary Heat source.When solar energy deficiency, the supplemental heat source as solar-heating heating system.Air source heat pump is at low cost, installation letter Single, efficiency is high, and preheating time is short, can quickly reach room temperature requirement, is widely used in solar heating.
Invention content
Since Sun Day shines limited time, the influence of easy climate causes traditional solar heating system needs to add Auxiliary thermal source, to increase investment and the operating cost of equipment.In addition, solar energy resources winter summer energy is unbalanced, accumulation of energy The problems such as difficulty causes non-heating period heat surplus, and system equipment leaves unused.It is suitable for the novel of vast northern area to seek Hot-water type solar heating, air source heat pump, low-temperature electricity-generating technology are organically coupling in one by heating technology and alternative energy source It rises, constitutes solar energy, air energy integrated using system, realize and maximumlly utilized within the scope of solar energy resources whole year, Heating Period Heating, non-heating period power generation, while domestic hot-water can also be provided as needed.Effective solution tradition solar heating system The problems such as middle non-heating period heat surplus, system equipment are idle.
In order to solve the above-mentioned technical problem, a kind of hot-water type solar-energy air-energy cogeneration of heat and power integration proposed by the present invention System, including water tank, the first water pump, solar thermal collector, low level side heat exchanger, the difunctional head of compression-expansion, Permanent Magnet and Electric Move generating integrated motor, high-order side heat exchanger, expansion valve, working medium pump and the second water pump;Lead between above-mentioned each equipment and valve body Connecting line connection is crossed, connection relation is as follows:Two-way coil pipe is equipped in the water tank, to divide the cavity of the water tank Shell side for shell side, first tube side and the second tube side, the water tank is equipped with two groups of inlet and outlet, the solar thermal collector Outlet end is connected to the input end of the solar thermal collector after the shell side of the water tank after first water pump, Form solar heat water circulation pipe;The shell side of the water tank is connected by the water side of second water pump and high-order side heat exchanger It connects;First tube side of the water tank is connected on heating confession-water return pipeline, and the second tube side of the water tank is connected on originally Between water lines and domestic hot-water's pipeline;On heating water supply pipe, heating water return pipeline, tap water pipe line and domestic hot-water's pipeline It is equipped with shut-off valve;The difunctional head of compression-expansion is connect with the generating integrated motor of the permanent-magnet electric;The low level Side heat exchanger is using air-cooled, including working medium side and wind turbine, the Single port of the working medium side of low level side heat exchanger pass through the pressure The Single port of the working medium side of the high-order side heat exchanger, the work of high position side heat exchanger are connected to after the difunctional head of contracting expansion The another port of matter side and the another port of the working medium side of low level side heat exchanger are parallel with the first bypass and the second bypass, In, the first bypass is equipped with expansion valve, in the first bypass, sets there are one shut-off valve, is located at positioned at the entrance of the expansion valve The exit of the expansion valve is equipped with heat pump check valve;Second bypass is equipped with working medium pump, and second bypasses, and is located at the working medium The entrance of pump sets the exit for being located at the working medium pump there are one shut-off valve equipped with power generation check valve.
Using the operation method of above-mentioned hot-water type solar-energy air-energy cogeneration of heat and power integral system, by adjusting valve On and off is realized and utilizes solar air source heat pumps heat and heat water supplying in Heating Period, is sent out using solar energy in non-heating period Electricity simultaneously provides hot water;Including:In Heating Period, the shut-off valve in the second bypass is closed, meanwhile, other shut-off valves are opened, into too Positive energy air source heat pump heat and heat water supplying system running pattern;In non-heating period, closes setting and returned in heating water supply pipe, heating Shut-off valve in water lines and the first bypass, meanwhile, other shut-off valves are opened, into hot-water type solar power generation heat supply water running Pattern.
Further, realize is the step of solar air source heat pumps heat and heat water supplying system operation:Start the first water pump, Water in water tank is squeezed into solar thermal collector and sends water tank back to after heat absorption heating, solar thermal collector hot water is completed and follows Ring;When solar energy deficiency, it is difunctional with electric model operation driving compression-expansion to start the generating integrated motor of permanent-magnet electric Head is run with compressed mode to enter a high position after the dry saturation gaseous organic matter generated in the heat exchanger of low level side pressurization heating Heat release is condensed into saturated liquid in the heat exchanger of side, is low dry into expansion valve decompression cooling by the shut-off valve in the first bypass Damp steam is spent, then, dry saturation vapor is evaporated to using heat absorption in the heat exchanger of low level side is introduced in after heat pump check valve, it is complete It is recycled at air source heat pump working medium side;In air source heat pump low level wind side, starts wind turbine and realize air and air source heat pump working medium Forced-convection heat transfer, air can be passed into working medium;In air source heat pump high position water side, starting the second water pump will be in water tank Water squeeze into high-order side heat exchanger after heat absorption heating and be sent into water tank and complete cycle;In solar thermal collector hot water circuit, The discharge after entering the first tube side heat absorption heating in water tank of heating return water is that heating is supplied water;It is recycled in air source heat pump In, tap water enters discharge offer domestic hot-water after the heat absorption heating of the second tube side in water tank.
Realize hot-water type solar power generation heat supply water running the step of be:Start the first water pump to squeeze into the water in water tank Water tank 1 is sent into after heat absorption heating in solar thermal collector and completes solar thermal collector hot water circuit, be used for low-temperature electricity-generating and life Hot water supply living;Meanwhile starting working medium pump, the saturated liquid organic working medium generated in low level heat exchanger enters work by shut-off valve After matter pumps pressurized heating, the dry saturation steaming that heat absorption in high-order side heat exchanger is evaporated to high pressure-temperature is squeezed by the check valve that generates electricity Gas is run into the difunctional head of compression-expansion with expansion mechanism, while driving the generating integrated motor of permanent-magnet electric to generate electricity Mode operation is produced electricl energy and is exported, and the low-pressure low-temperature gaseous working medium after expansion, which enters in low level heat exchanger, is condensed into saturated liquid Complete low-temperature electricity-generating working medium side cycle;In low-temperature electricity-generating low level wind side, start the pressure pair that wind turbine realizes air and generating working medium Stream heat exchange, by the heat transfer in working medium to air, discharges into the atmosphere;In low-temperature electricity-generating high position water side, start the second water pump Water in water tank is squeezed into and is sent into water tank completion low-temperature electricity-generating hot water circuit in high-order side heat exchanger after heat release cooling;Originally Discharge provides domestic hot-water after water enters the heat absorption heating of the second tube side in water tank.
Compared with prior art, the beneficial effects of the invention are as follows:
Hot-water type solar-energy air-energy cogeneration of heat and power integral system proposed by the present invention using hot-water type solar heating, The organic coupling of air source heat pump and ORC (organic Rankine cycle) low-temperature generation technology constitutes solar-energy air-energy comprehensive utilization system System.It realizes in Heating Period heating, non-heating period implements solar energy thermal-power-generating, while annual as needed can also provide life heat The function of water.It mainly has the beneficial effect that:
1. hot-water type solar-energy air-energy cogeneration of heat and power integral system can realize that Heating Period is adopted using solar energy with air It is warm, non-heating period power generation, the building demand of annual supplying hot water;In addition, air source heat pump is at low cost, installation is simple, and efficiency is high, in advance The hot time is short, can quickly reach room temperature requirement, be highly suitable as the auxiliary thermal source of solar heating system.Therefore the one Change system is to be suitable for the regenerative resource new application technology of the vast northern area heating in China, can effectively improve tradition and adopt The dual-pressure that warm mode is brought to China's energy and environment.
2. hot-water type solar-energy air-energy cogeneration of heat and power integral system utilizes non-heating period too based on Organic Rankine Cycle The a large amount of low-temperature water heatings output cleaning electric energy supply building use generated in positive energy heat collector, the maximization for realizing solar energy are answered With.For effective solution since solar energy winter summer energy is unbalanced, accumulation of energy is difficult, caused by tradition solar heating system is non-adopts The problem of warm period heat surplus.Meanwhile the organic coupling of air source heat pump and low-temperature generating system, a tractor serves several purposes, it reduces often Advise solar air source heat pumps combined type heating system investment payback time and the equipment energy waste brought idle for a long time and Economic loss.
Description of the drawings
Fig. 1 is the structure diagram of hot-water type solar-energy air-energy cogeneration of heat and power integral system.
In figure:1- water tanks, the first water pumps of 2-, 3- solar thermal collectors, 4- low levels side heat exchanger, the double work(of 5- compression-expansions Energy head, the generating integrated motor of 6- permanent-magnet electrics, 7- high positions side heat exchanger, 8- expansion valves, 9- working medium pumps, 10- wind turbines, 11- Second water pump, V1~V6- shut-off valves, C1- heat pump check valves, C2- power generation check valves.
Specific implementation mode
Technical solution of the present invention is described in further detail in the following with reference to the drawings and specific embodiments, it is described specific Embodiment is only explained the present invention, is not intended to limit the invention.
Hot-water type solar-energy air-energy cogeneration of heat and power integral system proposed by the present invention is by hot-water type solar heating, sky Air supply heat pump and ORC (organic Rankine cycle) low-temperature generation technology are organically coupled, and constitute solar-energy air-energy comprehensive utilization System realizes Heating Period heating, the annual method of operation of non-heating period power generation, while annual as needed can also provide life Hot water is realized and is maximumlly utilized within the scope of solar energy resources whole year.
The system is characterized mainly in that:Heating Period utilizes the heat and heat water supplying process of solar energy and air energy;It is adopted non- Heat power generation and supplying hot water process of the warm period using solar energy with air energy.Compared to traditional solar energy and air source heat pump heating System, the system have the dual function of heat supply and power generation, annual can run.
As shown in Figure 1, a kind of hot-water type solar-energy air-energy cogeneration of heat and power integral system proposed by the present invention, including storage Water tank 1, the first water pump 2, solar thermal collector 3, low level side heat exchanger 4, the difunctional head 5 of compression-expansion, permanent-magnet electric power generation Integrated electric motor 6, high-order side heat exchanger 7, expansion valve 8, working medium pump 9 and the second water pump 11.
It is connected by connecting line between above-mentioned each equipment and valve body, connection relation is as follows:
Two-way coil pipe is equipped in the water tank 1, to which the cavity of the water tank 1 is divided into shell side, first tube side With the second tube side, the shell side of the water tank 1 is equipped with two groups of inlet and outlet, described in the outlet end of the solar thermal collector 3 is passed through The input end of the solar thermal collector 3 is connected to after the shell side of water tank 1 after first water pump 2, forms solar energy Hot water circulating pipeline;The shell side of the water tank 1 is connect by second water pump 11 with the water side of high-order side heat exchanger 7.
First tube side of the water tank 1 is connected on heating confession-water return pipeline, the second tube side string of the water tank 1 It is associated between tap water pipe line and domestic hot-water's pipeline;Heating water supply pipe, heating water return pipeline, tap water pipe line and life heat Shut-off valve is equipped in water lines.
The generating integrated motor of the difunctional head 5 of compression-expansion and the permanent-magnet electric 6 is connect;The low level side is changed The use of hot device 4 is air-cooled, including working medium side and wind turbine 10, and the Single port of the working medium side of low level side heat exchanger 4 (should when Heating Period Port is the outlet end of working medium, and the port is the input end of working medium when non-heating period) pass through the difunctional head of the compression-expansion 5 Being connected to the Single port of the working medium side of the high-order side heat exchanger 7 afterwards, (port is the input end of working medium, non-heating when Heating Period The port is the outlet end of working medium when the phase), the another port of the working medium side of the high position side heat exchanger 7 (port when Heating Period For the outlet end of working medium, the port is the input end of working medium when non-heating period) it is another with the working medium side of low level side heat exchanger 4 Single port (port is the input end of working medium when Heating Period, and the port is the outlet end of working medium when non-heating period) is parallel with first It bypasses and second bypasses, wherein the first bypass is equipped with expansion valve 8, and first bypasses, and is located at the entrance of the expansion valve 8 If there are one shut-off valve V5, the exit for being located at the expansion valve 8 is equipped with heat pump check valve C1;Second bypass is equipped with working medium pump 9, second bypasses, and is set there are one shut-off valve V6 positioned at the entrance of the working medium pump 9, is located at the exit of the working medium pump 9 Equipped with power generation check valve C2.
Hot-water type solar-energy air-energy cogeneration of heat and power integral system of the present invention can be divided into solar thermal collector hot water system System, air source heat pump low-temperature electricity-generating integral system, heat four major parts such as water system and domestic hot-water supply system. Wherein solar thermal collector hot-water heating system is mainly made of water tank, water pump and solar thermal collector etc.;Air source heat pump is low Warm generating integrated system is by low level side heat exchanger, the difunctional head of compression-expansion, the generating integrated motor of permanent-magnet electric, a high position Side heat exchanger, the compositions such as expansion valve, working medium pump, check valve, wind turbine;Heat water system by heating for water return pipeline, water tank with And the compositions such as interior heating system;Domestic hot-water supply system then by tap water pipe line, domestic hot-water's water supply pipe, water tank with And the compositions such as the building hot water supply system.
Using above-mentioned hot-water type solar-energy air-energy cogeneration of heat and power integral system, can by adjusting valve conducting or It closes, realizes and utilize solar air source heat pumps heat and heat water supplying in Heating Period, using solar power generation and carried in non-heating period Supplying hot water.
In Heating Period, when solar energy deficiency, air source heat pump low-temperature electricity-generating integral system is with air source heat pump pattern Operation extracts heat from low level heat energy air energy and improves its grade, and assisted cryogenic solar thermal collector heats for building, It can be supplied to domestic hot-water simultaneously.And in non-heating period, system switchs to low-temperature electricity-generating operational mode, is ensureing user domestic hot-water's Under the premise of, it can be low-temperature receiver with air, the low temperature heat energy absorbed in solar thermal collector is turned by an Organic Rankine Cycle part Electric energy is turned to use for building.
1. solar air source heat pumps heating water system
In Heating Period, the shut-off valve V6 in the second bypass is closed, meanwhile, other shut-off valves V1~V5 is opened, into the sun It can air source heat pump heat and heat water supplying system running pattern;Detailed process is:Start the first water pump 2, the water in water tank 1 is beaten Enter in solar thermal collector 3 and send water tank 1 back to after heat absorption heating, completes solar thermal collector hot water circuit.When solar energy deficiency When, start permanent-magnet electric generating integrated motor 6 and the difunctional head of driving compression-expansion 5 is run with compressed mode with electric model Operation is coagulated heat release in high-order heat exchanger 7 is sent into after the dry saturation gaseous organic matter generated in low level heat exchanger 4 pressurization heating Become saturated liquid, is low mass dryness fraction damp steam into the decompression cooling of expansion valve 8, then using heat pump list by shut-off valve V5 It is introduced in heat absorption in low level heat exchanger 4 after to valve C1 and is evaporated to dry saturation vapor completion air source heat pump working medium side cycle. Air source heat pump low level wind side starts the forced-convection heat transfer that wind turbine 10 realizes air and heat pump fluid, air can be passed to Working medium.In air source heat pump high position water side, the second water pump 11 of startup, which squeezes into the water in water tank 1 in high-order side heat exchanger 7, to be inhaled It is sent into water tank 1 after heat heating and completes cycle.Hot water storage prepared by solar thermal collector hot-water heating system or air source heat pump system There are heating and supply domestic hot-water are used in water tank 1.Wherein, heating return water enters by shut-off valve V2 in water tank 1 After built-in coil pipe heat absorption heating heating water cycle is completed by shut-off valve V1 discharge supply building and heatings;Tap water passes through shut-off valve V4 enters after the heat absorption heating of the built-in coil pipe in water tank 1 by shut-off valve V3 discharge supply building domestic hot-waters.
2. hot-water type solar power generation hot-water supply system
In non-heating period, close the shut-off valve V1 being arranged in heating water supply pipe, heating water return pipeline and the first bypass, V2, V5, meanwhile, other shut-off valves V3, V4, V6 are opened, into hot-water type solar power generation supplying hot water operational mode.Detailed process It is:Start feeding water tank 1 after the water in water tank 1 is squeezed into solar thermal collector 3 heating of absorbing heat by the first water pump 2 to complete too Positive energy heat collector hot water cycle, is used for low-temperature electricity-generating and domestic hot-water supply;Meanwhile starting working medium pump 9, low level side heat exchanger 4 The saturated liquid organic working medium of middle generation is after shut-off valve V6 enters the pressurized heating of working medium pump 9, by the check valve C2 that generates electricity The dry saturation vapor that heat absorption is evaporated to high pressure-temperature is squeezed into high-order side heat exchanger 7, into the difunctional head of compression-expansion 5 with swollen Swollen mode operation, while driving the generating integrated motor of permanent-magnet electric 6 operation is produced electricl energy and exported in either a generation, after expansion Low-pressure low-temperature gaseous working medium enter in low level side heat exchanger 4 be condensed into saturated liquid complete low-temperature electricity-generating working medium side cycle; Low-temperature electricity-generating low level wind side starts the forced-convection heat transfer that wind turbine 10 realizes air and generating working medium, the heat in working medium is passed Air is passed, is discharged into the atmosphere;In low-temperature electricity-generating high position water side, starts the second water pump 11 and the water in water tank 1 is squeezed into height Water tank 1 is sent into after heat release cooling complete low-temperature electricity-generating hot water circuit in position side heat exchanger 7;In domestic hot-water supply system certainly Water is after shut-off valve V4 enters the heat absorption heating of the second tube side in water receiver 1 by shut-off valve V3 discharge supply building lifes Hot water living.
By taking Tianjin as an example, the annual interior production of hot-water type solar-energy air-energy cogeneration of heat and power integral system proposed by the present invention Raw economy and Environmental Effect Analysis is as follows.
Tianjin is located at 117 ° 10 ' of east longitude, and 39 ° 06 ' of north latitude belongs to the very abundant area of China's solar energy resources, annual Amount of radiation is in 5040~6300MJ/m2Between, it is equivalent to the heat that 172~215kg standard coal combustions are sent out.According to《It is civilian Build solar heating system engineering's technical manual》, Tianjin solar engineering design each moon meteorologic parameter such as 1 institute of table used Show, wherein:
Ta--- monthly average outside air temperature, DEG C;
Ht--- horizontal plane total solar radiation monthly average day irradiation, MJ/ (m2·d);
Hd--- horizontal plane solar scattered radiation monthly average day irradiation, MJ/ (m2·d);
Hb--- horizontal plane beam radia monthly average day irradiation, MJ/ (m2·d);
H --- inclination angle is equal to total solar radiation monthly average day irradiation, MJ/ (m on local latitude inclined surface2·d);
H0--- total solar radiation monthly average day irradiation on interface, MJ/ (m on atmosphere2·d);
Sm--- sunshine hour moon number, h;
Kt--- air clearness index.
1 Tianjin solar engineering design of table each moon meteorologic parameter used
Since different building types are not quite similar for the demand of domestic hot-water, life heat is not related in this calculating The supply of water.Take Tianjin Heating Period for November 15 to March 15, totally 121 days.It is equal to local latitude camber plane with inclination angle On monthly average day amount of radiation, carry out unit square solar thermal collector daylighting area hot-water type solar-energy air-energy cogeneration of heat and power The calculating of integral system Heating Period heating load, non-heating period generated energy.The wherein solar thermal collector work based on daylighting area 50% is taken as efficiency;The heat loss rate of pipeline and water tank is 10%;The generating efficiency of low-temperature electricity-generating operational mode unit is taken to be 6%;Tianjin heat metering price is per 0.25 yuan of kilowatt hour;Solar energy thermal-power-generating rate for incorporation into the power network is per 1.15 yuan of kilowatt hour.This Outside, the conversion factor of heating power and standard coal is calculated by heat equivalent value, and the signature coefficient of electric power is then according to power industry 2016 annual development reports take 0.315kg/ (kWh), while taking unit mark coal CO2Discharge capacity is 2.65kg/kg, SO2Discharge capacity For 1.49g/kg, NOxDischarge capacity is 1.37g/kg.Shown in correlation calculation result table 2.
2 hot-water type solar-energy air-energy cogeneration of heat and power integral system economy of table and environmental benefit result of calculation
As can be drawn from Table 2, by taking Tianjin as an example, for unit square solar thermal collector daylighting area, the present invention carries The hot-water type solar-energy air-energy cogeneration of heat and power integral system gone out, solar heating phase heating load are 915kWh, non-heating Phase generated energy is 24kWh, and annual economic well-being of workers and staff total value is 91 yuan, saves mark coal 39kg, CO2、SO2、NOxEmission reduction is distinguished For 103kg, 58g, 53g.As it can be seen that the implementation of hot-water type solar-energy air-energy cogeneration of heat and power integral system will bring it is certain Economy and environmental benefit.
Although above in conjunction with attached drawing, invention has been described, and the invention is not limited in above-mentioned specific implementations Mode, the above mentioned embodiment is only schematical, rather than restrictive, and those skilled in the art are at this Under the enlightenment of invention, without deviating from the spirit of the invention, many variations can also be made, these belong to the present invention's Within protection.

Claims (4)

1. a kind of hot-water type solar-energy air-energy cogeneration of heat and power integral system, including water tank (1), the first water pump (2), the sun Can heat collector (3), low level side heat exchanger (4), the difunctional head of compression-expansion (5), the generating integrated motor of permanent-magnet electric (6), High-order side heat exchanger (7), expansion valve (8), working medium pump (9) and the second water pump (11);
It is connected by connecting line between above-mentioned each equipment and valve body, connection relation is as follows:
Two-way coil pipe is equipped in the water tank (1), to which the cavity of the water tank (1) is divided into shell side, first tube side Two groups of inlet and outlet are equipped with the shell side of the second tube side, the water tank (1), the outlet end of the solar thermal collector (3) is passed through The input end of the solar thermal collector (3) is connected to after the shell side of the water tank (1) after first water pump (2), Form solar heat water circulation pipe;The shell side of the water tank (1) passes through second water pump (11) and high-order side heat exchanger (7) water side connection;
First tube side of the water tank (1) is connected on heating confession-water return pipeline, the second tube side string of the water tank (1) It is associated between tap water pipe line and domestic hot-water's pipeline;Heating water supply pipe, heating water return pipeline, tap water pipe line and life heat Shut-off valve is equipped in water lines;
The difunctional head of compression-expansion (5) connect with the generating integrated motor of the permanent-magnet electric (6);
It is characterized in that:
Low level side heat exchanger (4) use is air-cooled, including working medium side and wind turbine (10), the work of low level side heat exchanger (4) The Single port of matter side is by being connected to the working medium side of the high-order side heat exchanger (7) after the difunctional head of the compression-expansion (5) Single port, the working medium side of another port and the low level side heat exchanger (4) of the working medium side of the high position side heat exchanger (7) Another port is parallel with the first bypass and the second bypass, wherein the first bypass is equipped with expansion valve (8), and first bypasses, and is located at The entrance of the expansion valve (8) is set there are one shut-off valve (V5), and it is unidirectional to be equipped with heat pump positioned at the exit of the expansion valve (8) Valve (C1);Second bypass be equipped with working medium pump (9), second bypass on, be located at the working medium pump (9) entrance set there are one cut Only valve (V6), the exit for being located at the working medium pump (9) are equipped with power generation check valve (C2).
2. a kind of hot-water type solar-energy air-energy cogeneration of heat and power operation method, which is characterized in that utilize heat as described in claim 1 Water type solar-energy air-energy cogeneration of heat and power integral system is realized and is utilized in Heating Period by adjusting the on and off of valve Solar air source heat pumps heat and heat water supplying using solar power generation and provides hot water in non-heating period;Including:
In Heating Period, the shut-off valve (V6) in the second bypass is closed, meanwhile, other shut-off valves are opened, into solar air source Heat pump heating hot-water supply system operational mode;
In non-heating period, the shut-off valve being arranged in heating water supply pipe, heating water return pipeline and the first bypass is closed, meanwhile, Other shut-off valves are opened, into hot-water type solar power generation supplying hot water operational mode.
3. hot-water type solar-energy air-energy cogeneration of heat and power operation method according to claim 2, which is characterized in that realize the sun Energy air source heat pump heat and heat water supplying system operation, steps are as follows:
Start the first water pump (2), the water in water tank (1) is squeezed into solar thermal collector (3) and sends water storage back to after heat absorption heating Case (1) completes solar thermal collector hot water circuit;
When solar energy deficiency, starts the generating integrated motor of permanent-magnet electric (6) and driving compression-expansion pair is run with electric model Function head (5) runs to pressurize the middle dry saturation gaseous organic matter generated of low level side heat exchanger (4) with compressed mode and heat up Enter heat release in high-order side heat exchanger (7) afterwards and be condensed into saturated liquid, by the shut-off valve (V5) in the first bypass, into expansion Valve (8) decompression cooling is low mass dryness fraction damp steam, then, using being introduced in low level side heat exchanger after heat pump check valve (C1) (4) heat absorption is evaporated to dry saturation vapor in, completes air source heat pump working medium side cycle;
In air source heat pump low level wind side, start the forced-convection heat transfer that wind turbine (10) realizes air and air source heat pump working medium, Air can be passed into working medium;In air source heat pump high position water side, starts the second water pump (11) and squeeze into the water in water tank (1) Water tank (1) is sent into after heat absorption heating complete cycle in high-order side heat exchanger (7);
In solar thermal collector hot water circuit, heating return water is after into the first tube side heat absorption heating in water tank (1) Discharge is that heating is supplied water;In air source heat pump cycle, tap water enters the heat absorption heating heel row of the second tube side in water tank (1) Go out to provide domestic hot-water.
4. hot-water type solar-energy air-energy cogeneration of heat and power operation method according to claim 2, which is characterized in that realize hot water Type solar power generation heat supply water running, steps are as follows:
Start after the water in water tank (1) is squeezed into solar thermal collector (3) heating of absorbing heat by the first water pump (2) and is sent into water tank 1 completes solar thermal collector hot water circuit, is used for low-temperature electricity-generating and domestic hot-water supply;
Meanwhile start working medium pump (9), the saturated liquid organic working medium generated in low level heat exchanger (4) by shut-off valve (V6) into After entering the pressurized heating of working medium pump (9), squeezes into heat absorption in high-order side heat exchanger (7) by the check valve (C2) that generates electricity and be evaporated to high pressure The dry saturation vapor of high temperature is run with expansion mechanism into the difunctional head of compression-expansion (5), while permanent-magnet electric being driven to generate electricity Integrated electric motor (6) runs and produces electricl energy and export in either a generation, and the low-pressure low-temperature gaseous working medium after expansion enters low level and changes It is condensed into saturated liquid in hot device (4) and completes low-temperature electricity-generating working medium side cycle;
In low-temperature electricity-generating low level wind side, start the forced-convection heat transfer that wind turbine (10) realizes air and generating working medium, it will be in working medium Heat transfer to air, discharge into the atmosphere;
In low-temperature electricity-generating high position water side, the second water pump of startup (11), which squeezes into the water in water tank 1 in high-order side heat exchanger (7), to be put It is sent into water tank (1) after heat drop temperature and completes low-temperature electricity-generating hot water circuit;
Discharge provides domestic hot-water after tap water enters the heat absorption heating of the second tube side in water tank (1).
CN201810058193.4A 2018-01-19 2018-01-19 Hot-water type solar-energy air-energy cogeneration of heat and power integral system and operation method Pending CN108375101A (en)

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CN111609552A (en) * 2020-04-23 2020-09-01 青岛海尔空调电子有限公司 Hot water unit
CN112762424A (en) * 2021-01-07 2021-05-07 中国船舶重工集团新能源有限责任公司 Solar thermoelectric coupling system based on combination of heat storage and compression heat pump and operation method thereof
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Publication number Priority date Publication date Assignee Title
CN109282460A (en) * 2018-08-28 2019-01-29 格力电器(芜湖)有限公司 Humidity control apparatus, humidity regulation method and storage medium
CN111609552A (en) * 2020-04-23 2020-09-01 青岛海尔空调电子有限公司 Hot water unit
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CN113669122A (en) * 2021-08-13 2021-11-19 普世通(北京)电气有限公司 Novel low-carbon extra-high voltage converter station energy utilization system

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Application publication date: 20180807