CN116085891B - High-large factory building air conditioning solar integrated system and air conditioning method thereof - Google Patents

High-large factory building air conditioning solar integrated system and air conditioning method thereof Download PDF

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Publication number
CN116085891B
CN116085891B CN202310372353.3A CN202310372353A CN116085891B CN 116085891 B CN116085891 B CN 116085891B CN 202310372353 A CN202310372353 A CN 202310372353A CN 116085891 B CN116085891 B CN 116085891B
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temperature
heat
water
water supply
air conditioning
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CN116085891A (en
Inventor
孙俊彪
冯彦福
梁麟
冯瑞强
程权
朱宝仁
吴建义
姚建军
冯小珂
贺东芳
李华斌
冯瑞峰
武斌
王康成
邵鹏华
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Chengong Environmental Technology Co ltd
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Chengong Environmental Technology Co ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0089Systems using radiation from walls or panels
    • 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
    • F24D15/00Other domestic- or space-heating systems
    • 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
    • F24D18/00Small-scale combined heat and power [CHP] generation systems specially adapted for domestic heating, space heating or domestic hot-water supply
    • 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/89Arrangement or mounting of control or safety devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/0017Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice
    • F24F5/0021Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice using phase change material [PCM] for storage
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0046Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00Ventilation
    • F24F7/003Ventilation in combination with air cleaning
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00Ventilation
    • F24F7/007Ventilation with forced flow
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/108Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S60/00Arrangements for storing heat collected by solar heat collectors
    • F24S60/10Arrangements for storing heat collected by solar heat collectors using latent heat
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02SGENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/30Electrical components
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02SGENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/40Thermal components
    • H02S40/44Means to utilise heat energy, e.g. hybrid systems producing warm water and electricity at the same time
    • 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
    • F24D2101/00Electric generators of small-scale CHP systems
    • F24D2101/40Photovoltaic [PV] modules
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0046Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
    • F24F2005/0064Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground using solar energy
    • F24F2005/0067Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground using solar energy with photovoltaic panels

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Thermal Sciences (AREA)
  • Sustainable Energy (AREA)
  • Signal Processing (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Power Engineering (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention provides an air conditioning solar energy integrated system for a large factory building and an air conditioning method thereof, belonging to the technical field of solar energy air conditioning; the problems that the existing air conditioning system of the large factory building is high in energy consumption, poor in intelligent control and incapable of being comprehensively adjusted are solved; an air conditioning module is arranged above a production line station arranged in a high and large factory building; the high-rise factory building is provided with an inner wall and an outer wall supporting cement table on the ground and the roof, and a heat exchange and insulation cavity for hot air flowing and heating of the production line is formed between the inner wall and the outer wall fixed by the inner wall and the outer wall supporting cement table; an aluminum foil reflecting film structure layer is arranged on the roof of the high and large factory building, and a floor pipe structure layer is arranged under the floor of the high and large factory building; the top of the high-rise factory building is also provided with a solar photovoltaic and photo-thermal integrated component which is used for refrigerating together with an air conditioning module in summer and is used for heating by coupling with the radiation of a ground coil structure in winter; the invention is applied to the air conditioning of the large factory building.

Description

High-large factory building air conditioning solar integrated system and air conditioning method thereof
Technical Field
The invention provides an air conditioning solar energy integrated system for a large factory building and an air conditioning method thereof, and belongs to the technical field of solar energy air conditioning.
Background
The existing air conditioning system for the high factory building also has the following problems:
(1) the convection heating or refrigeration air-conditioning system has poor human body thermal comfort, higher energy consumption and poor intelligent control;
(2) the indoor humidity cannot be controlled well, the indoor air state cannot be controlled and regulated independently by the temperature and the humidity, the energy consumption is high, and the intelligent automatic control is poor;
(3) flexible combination of system temperature, humidity and purification functions along with functional requirement adjustment of a production line cannot be realized;
(4) the air comprehensive adjustment of the production line and the factory building space cannot be realized;
(5) the building enclosure structure cannot be reasonably utilized to carry out ventilation, air conditioning and energy saving, and the step-by-step protection of the building safety of the building is realized.
Therefore, the invention provides an air conditioning solar energy integrated system for a large factory building and an air conditioning method thereof, and simultaneously solves the five problems.
Disclosure of Invention
The invention provides an air conditioning solar integrated system for a large factory building and an air conditioning method thereof, which aim to solve the problems that the existing air conditioning system for the large factory building is high in energy consumption, poor in intelligent control and incapable of being comprehensively adjusted.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a high factory building air conditioning solar energy integrated system, includes the production line station that sets up in high factory building, the production line station top is provided with air conditioning module and scavenger fan, but air conditioning module includes pull change's functional material combination module, provides wind power's air pump, gets rid of the elementary sack filter of big granule dregs and provides the supply-air outlet of the required hot-blast of heating, is provided with the exhaust fan on the wall opposite to the supply-air outlet, and the exhaust duct end of exhaust fan is provided with the protection network;
the high-rise factory building is provided with an inner wall and an outer wall supporting cement table on the ground and the roof, and a heat exchange and heat preservation cavity for hot air flowing and heating of a production line is formed between the inner wall and the outer wall fixed by the inner wall and the outer wall supporting cement table;
the roof of the high and large factory building is provided with an aluminum foil reflecting film structure layer contacted with indoor air, the ground of the high and large factory building is provided with a ground coil structure layer, and the ground coil structure layer comprises a ground coil water return pipeline and a ground coil water supply pipeline;
the top of the high-rise factory building is also provided with a solar photovoltaic and photo-thermal integrated component, the solar photovoltaic and photo-thermal integrated component is used for refrigerating together with an air conditioning module in summer and is used for coupling with a ground coil structure layer for radiation heating in winter;
the indoor humidity detection probe, the outer wall temperature detection probe and the inner wall temperature detection probe are respectively arranged on the walls of the high and large factory buildings, and the indoor humidity detection probe, the outer wall temperature detection probe and the inner wall temperature detection probe are respectively connected with a temperature controller arranged in the high and large factory buildings through wires.
The solar photovoltaic and photo-thermal integrated assembly comprises a photovoltaic part and a photo-thermal part, wherein the photovoltaic part adopts a solar photovoltaic panel, and provides required electric energy for loads of a factory building through a control system, and the photovoltaic part comprises a photovoltaic cell, an MPPT solar controller and a central control panel;
the solar heat storage cascade absorption type refrigeration system comprises a solar heat storage cascade absorption type refrigeration module and is characterized in that the photo-thermal part is composed of a PV/T heat collector, a phase change heat storage device, a condenser, an evaporator, a high-pressure generator, a high-pressure absorber, a high-pressure heat exchanger, a heating water pump, a low-pressure generator, a low-pressure absorber, a low-pressure heat exchanger, a circulating water pump and a cooling tower, the PV/T heat collector is connected with an MPPT solar controller, solar energy is converted into heat energy, a photovoltaic cell is cooled through a thermal circulation mechanism, and the MPPT solar controller is connected with a central control board.
The PV/T heat collector is respectively connected with the high-voltage generator and the low-voltage generator through a phase change heat storage device, cold water is heated by the phase change heat storage device through a heating water pump and then is sent to the PV/T heat collector, hot water supply and hot water return of the PV/T heat collector are respectively connected into a hot water connection port of a ground coil water supply pipeline and a hot water return pipeline, and a ground coil hot water supply pump is arranged on a pipeline connected with the hot water supply of the PV/T heat collector and the ground coil water supply pipeline;
the high-pressure generator is connected with the high-pressure absorber through the high-pressure heat exchanger, the low-pressure generator is connected with the low-pressure absorber through the low-pressure heat exchanger, high-pressure refrigerant vapor of the high-pressure generator enters the low-pressure absorber after passing through the condenser and the evaporator, medium-pressure refrigerant vapor is sent into the high-pressure absorber through the low-pressure generator, an electronic expansion valve is arranged on a pipeline between the condenser and the evaporator, water inflow and return water of the high-pressure absorber, the low-pressure absorber and the condenser come from the cooling tower, cold water supply and cold water return water of the evaporator are respectively connected into cold water connection ports of a ground coil water supply pipeline and a ground coil water return pipeline, and a ground coil cold water supply pump is arranged on a pipeline connected with the cold water supply and the ground coil water supply pipeline of the evaporator;
the phase change heat storage device is characterized in that circulating water pumps are arranged on pipelines connected with the high-pressure generator and the low-pressure generator, and circulating water pumps are arranged on water outlet pipelines connected with the high-pressure absorber and the high-pressure heat exchanger.
The phase change heat storage device comprises a water outlet, a heat preservation layer, a heat release coil, a heat storage material unit and a water inlet.
The functional material combination module can independently adopt the phase change heat storage material or adopt the combination of the phase change heat storage material and the purifying heat release material and/or the hygroscopic heat release material according to different working conditions on the production line.
The PV/T heat collector comprises a PV component, a copper heat absorption layer, a water delivery copper pipe, a packaging layer, a heat preservation layer, a waterproof layer and a backboard from top to bottom.
An air conditioning method for a tall factory building adopts an air conditioning solar energy integrated system for the tall factory building, and comprises the following steps:
the refrigeration system operates in summer: starting an air conditioning module for ventilation, manually starting and closing a ground coil radiation air conditioning refrigeration function, introducing cold water into the ground coil, and under the condition of effective solar radiation, regulating a temperature controller connected with a PV/T heat collector to control the start and stop of a heating water pump, wherein the PV/T heat collector collects and converts light and heat to heat circulating water in the PV/T heat collector;
when the water temperature in the PV/T heat collector reaches more than 90 ℃, the heating water pump is started, when the water temperature is lower than 85 ℃, the heating water pump is closed, and circulating hot water reaching the heat source temperature of the refrigerating system enters the phase change heat storage device to convert the hot water into heat storage material phase change latent heat for storage;
after the water temperature in the heat release coil of the phase change heat storage device reaches the use temperature, the circulating water pump is started, so that the hot water heated by the heat release coil becomes a heating source of the low-pressure generator and the high-pressure generator;
in the refrigerating process, the indoor air humidity is detected in real time through an indoor humidity detection probe, and the cold water supply temperature of the floor pipe is intelligently adjusted through calculation of an anti-condensation water supply temperature algorithm;
radiation heating operation in winter: the floor pipe radiation heating function and the air conditioning module are started, hot water is introduced into the floor pipe to heat the floor, so that a heat radiation roof and surrounding walls are heated, a three-dimensional heat source space is formed, the heat exchange and heat preservation cavity is used for preserving heat in a room, the heat exchange and heat preservation cavity is heated by hot air convection in the heat exchange and heat preservation cavity, and then the indoor radiation is heated, so that heating circulation is completed;
hot water in the ground coil is supplied through the PV/T heat collector;
meanwhile, the water supply temperature is intelligently adjusted through the calculation of a heating water temperature energy-saving algorithm by the outer wall temperature detection probe and the inner wall temperature detection probe.
The anti-condensation water supply temperature algorithm comprises the following steps:
setting the room temperature as T0, detecting the room temperature as T1, the temperature of the outer wall as T2, the temperature of the inner wall as T3 and the water supply temperature of the floor pipe as 45 ℃;
set dew point temperature t=aΦ 3 +bΦ 2 +cΦ+d, where a, b, c, d is a constant, Φ is the indoor relative humidity;
if the indoor relative humidity is required to be set manually, setting the indoor relative humidity to be phi 1, setting the dew point temperature corresponding to T0 to be T1, and detecting the indoor air relative humidity to be phi 2, wherein the dew point temperature corresponding to T1 is T2;
if T2-T1 is more than 5 ℃, the water pump for ground coil cold water supply is used for supplying water at the temperature of T1-2 ℃ and the rated flow until the temperature of T2-T1 is less than 2 ℃, at the moment, the water pump for ground coil cold water supply is used for supplying water at the temperature of t1+1 ℃ and 60% of the rated flow, the humidity steady state of T2> t1+0.5 ℃ and the humidity of T1-T0 is less than or equal to 1 ℃ is maintained, and the refrigerating and anti-condensation effects of the air conditioner are achieved;
if T2-T1 is less than or equal to 5 ℃, the ground coil cold water supply water pump supplies water at the temperature of T1-1 ℃ and the rated flow until |t2-t1| <1 ℃, at this time, the ground coil cold water supply water pump supplies water at the temperature of t1+1 ℃ and 60% of the rated flow, and the humidity steady state of t2> t1+0.5 ℃ and |t1-t0| <1 ℃ is maintained, so that the air conditioner refrigeration anti-condensation effect is achieved;
if T2 is less than or equal to t1+0.5deg.C or |T1-T0| > 1deg.C in the air conditioner refrigeration steady state, repeating the control logic;
if the indoor relative humidity requirement is not set manually, starting the indoor initial relative humidity of the ground coil radiation air conditioner refrigeration function to be phi 3, and setting the dew point temperature corresponding to T0 to be T3, wherein a T1 initial value is provided;
the ground coil cold water supply pump supplies water at the temperature of t3+ (T1-T3) multiplied by 40% and rated flow, so that T1 is gradually reduced until the temperature of the ground coil cold water supply pump is not more than |T1-T0| and is not more than 1 ℃, and at the moment, the ground coil cold water supply pump supplies water at the temperature of 40% of the current water temperature and the rated flow, so that the humidity steady state of the temperature of the ground coil cold water supply pump is not more than |T1-T0| and is not more than 1 ℃ is maintained, and the refrigerating and anti-condensation effects of an air conditioner are achieved;
and repeating the control logic if the temperature of the air conditioner is |T1-T0| >1 ℃ in the refrigerating steady state.
The heating water temperature energy-saving algorithm comprises the following steps:
setting the room temperature as T0, detecting the room temperature as T1, the temperature of the outer wall as T2, the temperature of the inner wall as T3 and the water supply temperature of the floor pipe as 45 ℃;
if T0-T2 is less than or equal to 20 ℃, the floor pipe hot water supply water pump is not started, and the air pump of the production line station is independently controlled according to the production requirement, namely T3 is independently controlled;
if T0-T2 is more than 20 ℃ and T3-T2 is more than 10 ℃, automatically starting a ground coil hot water supply water pump to stabilize the dynamic balance of the indoor temperature set value and the detection value:
(1) If 15 ℃ is higher than T3-T2 is higher than 10 ℃, controlling the flow of the water supply pump of the ground coil hot water to be 80% of the rated flow after the rated flow enables T1 to reach T0 for the first time, and enabling |T0-T1| to be less than or equal to 2 ℃;
(2) If the temperature is 20 ℃ to be more than T3-T2 and is more than or equal to 15 ℃, controlling the flow of the water supply pump for the coil hot water to be 60% of the rated flow after the rated flow enables T1 to reach T0 for the first time, and enabling the I T0-T1I to be less than or equal to 2 ℃;
(3) If T3-T2 is more than or equal to 20 ℃, controlling the flow of the water supply pump of the ground coil hot water to be 40% of the rated flow after T1 reaches T0 for the first time at the rated flow, and enabling |T0-T1| to be less than or equal to 2 ℃;
and repeating the control logic when the temperature is |T0-T1| >2 ℃ in the heating steady state.
Compared with the prior art, the invention has the following beneficial effects: according to the invention, by adopting the radiation heating technology and combining a heating water temperature energy-saving algorithm, the radiation air conditioner refrigeration and dew point real-time detection anti-condensation technology are combined, the hot water supply temperature and the cold water supply temperature are intelligently adjusted, the comfort of a human body and the heat source energy-saving performance are considered, the heat energy byproducts of a production line are fully utilized, and the components of the invention all use the existing mature products, so that the invention has the advantages of strong industrialization feasibility, good functional stability, safety, comfort and energy saving.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic diagram of the system of the present invention;
fig. 2 is a schematic structural diagram of a solar heat storage cascade absorption refrigeration module according to the present invention;
FIG. 3 is a schematic view showing the internal structure of the phase change heat storage device of the present invention;
FIG. 4 is a schematic diagram of a control system for the solar photovoltaic photo-thermal module of the present invention;
FIG. 5 is a schematic cross-sectional view of a PV/T collector of the present invention;
FIG. 6 is a schematic diagram of different material combinations in the functional material combination module of the present invention;
in the figure: 1 is a production line station, 2 is an air conditioning module, 3 is a functional material combination module, 4 is an air extractor, 5 is a primary cloth bag filter, 6 is an air supply port, 7 is an inner and outer wall supporting cement table, 8 is a ground coil structural layer, 9 is an indoor humidity detection probe, 10 is a temperature controller, 11 is an outer wall temperature detection probe, 12 is an inner wall temperature detection probe, 13 is a ground coil water return pipeline, 14 is a ground coil water supply pipeline, 15 is an exhaust fan, 16 is a protective screen, 17 is an aluminum foil reflecting film structural layer, 18 is a ventilation fan, 19 is a heat exchange and insulation cavity, and 20 is a solar photovoltaic photo-thermal integrated component;
31 is a water outlet, 32 is an insulating layer, 33 is an exothermic coil, 34 is a heat storage material unit, and 35 is a water inlet;
51 is a PV component, 52 is a copper heat absorption layer, 53 is a water delivery copper pipe, 54 is a packaging layer, 55 is a heat preservation layer, 56 is a waterproof layer, and 57 is a backboard;
s is a PV/T heat collector, R is a phase change heat storage device, C is a condenser, E is an evaporator, G1 is a high-pressure generator, A1 is a high-pressure absorber, T1 is a high-pressure heat exchanger, F1 is a heating water pump, G2 is a low-pressure generator, A2 is a low-pressure absorber, T2 is a low-pressure heat exchanger, F2 is a circulating water pump, EEV is an electronic expansion valve and CT is a cooling tower.
Detailed Description
The invention provides an air conditioning solar energy integrated system for a tall and big factory building, which has the structure shown in figure 1, and comprises a production line station 1 arranged in the tall and big factory building, wherein an air conditioning module 2 and a ventilation fan 18 are arranged above the production line station 1, the air conditioning module 2 comprises a drawer type convenient and fast drawable and replaceable functional material combination module 3, an air extractor 4 for providing wind power, a primary cloth bag filter 5 for removing large-particle slag dust and an air supply opening 6 for providing hot air required by heating, an exhaust fan 15 is arranged on a wall opposite to the air supply opening 6, and a protection net 16 is arranged at the end of an exhaust pipeline of the exhaust fan 15;
the high-rise factory building is provided with an inner wall and outer wall supporting cement table 7 on the ground and the roof, and a heat exchange and heat preservation cavity 19 for hot air flowing heating of a production line is formed between an inner wall and an outer wall fixed by the inner wall and outer wall supporting cement table 7;
the roof of the tall building is provided with an aluminum foil reflecting film structure layer 17 which is in contact with indoor air, the ground of the tall building is provided with a floor pipe structure layer 8, and the floor pipe structure layer 8 comprises a floor pipe water return pipeline 13 and a floor pipe water supply pipeline 14;
the top of the high and large factory building is also provided with a solar photovoltaic and photo-thermal integrated assembly 20, the solar photovoltaic and photo-thermal integrated assembly 20 is used for refrigerating together with the air conditioning module 2 in summer and is used for coupling with the floor-pipe structural layer 8 for radiation heating in winter;
the interior of the tall and big factory building is provided with an indoor humidity detection probe 9, the wall of the tall and big factory building is respectively provided with an outer wall temperature detection probe 11 and an inner wall temperature detection probe 12, and the indoor humidity detection probe 9, the outer wall temperature detection probe 11 and the inner wall temperature detection probe 12 are respectively connected with a temperature controller 10 arranged in the tall and big factory building through wires.
The structure of the solar heat storage cascade absorption refrigeration module provided by the invention is shown in fig. 2, and the refrigeration operation principle is as follows:
under the condition of effective solar radiation, the temperature controller 10 connected with the PV/T heat collector S is regulated to control the starting and stopping of the heating water pump F1. The PV/T collector S collects converted light and heat to heat the circulating water therein. When the water temperature in the PV/T collector S reaches above a first set temperature, the heating water pump F1 is started, and when the water temperature is lower than a second set temperature, the heating water pump F1 is closed. The circulating hot water reaching the temperature of the heat source of the refrigerating system enters the phase change heat storage device R to convert the hot water into heat storage material phase change latent heat for storage. After the water temperature in the heat release coil 33 of the phase change heat storage device R reaches the use temperature, the circulating water pump F2 is started, so that the hot water heated by the heat release coil 33 becomes a heating source of the low-pressure generator G2 and the high-pressure generator G1. The circulating water pump F2 adopting frequency conversion can automatically adjust the circulating water flow in a frequency conversion mode according to the temperature condition of the solution in the low-pressure generator G2, and then the temperature and the concentration of the solution in the low-pressure generator G2 are adjusted.
The solar heat storage cascade absorption refrigeration module adopts a two-stage absorption refrigeration cycle, wherein the two-stage absorption refrigeration cycle comprises a high-pressure solution circulation system and a low-pressure solution circulation system, low-pressure refrigerant vapor from an evaporator E is boosted into medium-pressure refrigerant vapor in a low-pressure stage circulation (A2-T2-G2), cooling water is introduced into a low-pressure absorber A2 for radiating heat in order to continuously and stably carry out the vapor absorption process, a low-pressure heat exchanger T2 is arranged for backheating, and the pressure can be boosted by using heat energy to the maximum extent; and then the high-pressure stage circulation (A1-T1-G1) is boosted to high-pressure refrigerant vapor, and the device arrangement is similar to that of the low-pressure stage circulation. The high-pressure refrigerant vapor is removed from the condenser C to be liquefied by heat release, and the liquid is decompressed and cooled by the throttling device and enters the evaporator E. In the evaporator E, the treated liquid absorbs heat to low pressure vapor, which absorbs heat from the cooled medium to produce a refrigeration effect. And finally, absorbing low-pressure steam in the evaporator E by using a liquid absorbent in the low-pressure absorber A2, and maintaining the low-pressure state in the evaporator E to ensure that circulation is continuously carried out. The refrigerant-absorbent solution is formed in the low-pressure absorber A2, and is pumped into the low-pressure generator G2 again after being boosted by the solution pump, so that one cycle is completed. The solar heat storage cascade absorption type refrigeration module has the refrigeration energy efficiency ratio of about 0.38 under the conditions that the heat source temperature is 70-85 ℃, the coolant water temperature is 9 ℃ and the cooling water temperature is 32 ℃.
The internal structure of the phase-change heat storage device R of the present invention is shown in FIG. 3, and comprises a water outlet 31, a heat insulating layer 32, a heat release coil 33, a heat storage material unit 34 and a water inlet 35. In which the phase change thermal storage material is placed within the thermal storage material unit 34.
The schematic diagram of the control system of the solar photovoltaic and photo-thermal integrated assembly 20 adopted by the invention is shown in fig. 4, wherein the solar photovoltaic and photo-thermal integrated assembly 20 mainly comprises photovoltaic and photo-thermal parts. The photovoltaic part adopts a solar photovoltaic panel with mature technology, and provides required electric energy for loads such as a fan, a water pump, an electric valve and the like of a factory building through a control system, and mainly comprises a photovoltaic cell, an MPPT solar controller and a central control board. Because the factory building is less in work at night and pursues the largest solar energy generating capacity in daytime, the storage battery is canceled, the initial investment can be saved, and the solar energy power generation utilization rate is improved.
The MPPT solar controller is a solar controller with the function of 'maximum power point tracking' (Maximum Power Point Tracking), and can adjust the working state of an electric module, so that a solar photovoltaic panel can output more electric energy.
The principle of the MPPT solar controller is as follows: firstly detecting the direct current voltage and the output current of the main loop, then calculating the output power of the solar array, and finally tracking the maximum power point of the solar energy by using a disturbance and observation method. As shown in fig. 4, the disturbance resistor R and the MOSFET transistor connected in series change the average current through the disturbance resistor R by changing the duty cycle of the MOSFET transistor in the case where the output voltage is substantially stable, thus generating a disturbance of the current. Meanwhile, the output current and voltage of the photovoltaic cell are also influenced, and the disturbance direction of the next period is determined by measuring the change at the moment. If the disturbance direction is correct, the output power of the solar photovoltaic panel is increased, the next period continues to be disturbed in the same direction, otherwise, the disturbance is performed in the opposite direction, and the process is repeated, so that the dynamic output of the solar photovoltaic panel reaches the dynamic maximum power point.
The inverter in the MPPT solar controller outputs 380V alternating current to the central control board and then supplies the alternating current to the load, and the central control board is also connected with the mains supply to supply power, so that uninterrupted power supply is ensured. The central control board monitors that the output voltage of the inverter is lower than 360V for more than 2 minutes, and the mains supply is switched; otherwise, the inverter is kept to supply power, and the mains supply is not electrified.
The photo-thermal part is mainly a PV/T heat collector S, solar energy is converted into heat energy, and meanwhile, a thermal circulation mechanism is used for cooling a photovoltaic cell, so that the photoelectric conversion efficiency is improved, and the solar heat energy is utilized more efficiently. The cross-sectional structure of the PV/T collector S used in the present invention is shown in FIG. 5, and comprises, in order from top to bottom, a PV assembly 51, a copper heat absorption layer 52, a water delivery copper pipe 53, an encapsulation layer 54, a heat preservation layer 55, a waterproof layer 56 and a back plate 57. The PV/T collector S compares with a product with a PV assembly without a water cooled collector, and the solar radiation intensity exceeds 300W/m 2 The relative power generation efficiency is improved by more than 8% after long-term use.
The PV/T collector S has an economical advantage in that the cost per unit area is lower than the sum of the PV system and the solar collector system per unit area, while also shortening the investment recovery period of the PV system.
Functional material in the inventionDifferent combinations of the material combination modules 3 can refer to fig. 6, wherein the combination (1) is that phase change heat storage materials are independently adopted at an air inlet, and the material combination module is suitable for the working condition that only waste heat is used for exhaust air of a production line; the combination (2) adopts a hygroscopic and exothermic material and a phase change heat storage material at an air inlet, and is suitable for the working condition of the production line of exhausting the damp and hot air; the combination (3) adopts a purifying heat release material and a phase change heat storage material at the air inlet, and is suitable for the working condition that the exhaust air of the production line is gas pollutant; the combination (4) adopts a hygroscopic and exothermic material, a purifying and exothermic material and a phase change heat storage material at an air inlet, and is suitable for the working condition that the exhaust air of a production line is wet and hot gas pollutant; the combination (5) is characterized in that a purifying heat release material, a phase change heat storage material, a moisture absorption heat release material and a phase change heat storage material are sequentially adopted at the air inlet, and the working condition that the station of the production line is full-load operation when the production line exhausts wet and hot gas pollutants is adopted. Wherein the purifying exothermic material adopted by the invention is MOF structure, molecular formula C 20 H 25 N 3 O 3 Molecular weight 355.4308, can absorb a variety of volatile gaseous contaminants. The phase change heat storage material is compound paraffin C 25 H 52 The hygroscopic and exothermic material is silica gel. Wherein the compound paraffin C 25 H 52 The thermal physical properties of the heat storage material are shown in table 1 below:
Figure SMS_1
table 1 thermal physical parameters of the composite paraffin wax thermal storage material.
The invention also provides an air conditioning method for the large factory building, which combines the ground coil structure and the solar photovoltaic photo-thermal integrated assembly 20 to realize the functions of refrigerating in summer and heating in winter. The method comprises the following specific steps:
the refrigeration system operates in summer: the air conditioning module 2 is started to ventilate, the ground coil radiation air conditioning refrigeration function is manually started and closed, cold water is filled in the ground coil, and under the condition of effective solar radiation, the temperature controller 10 connected with the PV/T heat collector S is regulated to control the start and stop of the heating water pump F1, and the PV/T heat collector S collects and converts the light and heat to heat the circulating water in the PV/T heat collector S;
when the water temperature in the PV/T heat collector S reaches more than 90 ℃, the heating water pump F1 is started, when the water temperature is lower than 85 ℃, the heating water pump F1 is closed, and circulating hot water reaching the heat source temperature of the refrigerating system enters the phase change heat storage device R to convert the hot water into heat storage material phase change latent heat for storage;
after the water temperature in the heat release coil 33 of the phase change heat storage device R reaches the use temperature, the circulating water pump F2 is started, so that the hot water heated by the heat release coil 33 becomes a heating source of the low-pressure generator G2 and the high-pressure generator G1;
in the refrigerating process, the indoor air humidity is detected in real time through an indoor humidity detection probe 9, and the cold water supply temperature of the floor pipe is intelligently adjusted through calculation of an anti-condensation water supply temperature algorithm;
radiation heating operation in winter: the floor pipe radiation heating function and the air conditioning module 2 are started, the floor is heated by passing hot water through the floor pipe, so that a three-dimensional heat source space is formed by radiating the heat on the roof and the surrounding walls, the heat exchange and heat preservation cavity 19 is used for preserving heat in a room, the heat exchange and heat preservation cavity 19 is heated by convection of hot air in the heat exchange and heat preservation cavity 19, and then the room is heated by radiation, so that heating circulation is completed;
hot water in the ground coil is supplied through the PV/T collector S;
meanwhile, the water supply temperature is intelligently adjusted through the calculation of a heating water temperature energy-saving algorithm through the outer wall temperature detection probe 11 and the inner wall temperature detection probe 12.
The heating water temperature energy-saving algorithm provided by the invention comprises the following steps:
through outer wall temperature detection probe 11 and interior wall temperature detection probe 12, through the energy-conserving algorithm calculation of heating temperature, intelligent regulation water supply temperature, the floor-tube radiation heating function can set up automatic start and stop, also can set up manual work and start and stop.
Setting the room temperature as T0, detecting the room temperature as T1, the temperature of the outer wall as T2, the temperature of the inner wall as T3 and the water supply temperature of the floor pipe as 45 ℃;
if T0-T2 is less than or equal to 20 ℃, the floor pipe hot water supply water pump is not started, and the air pump of the production line station is independently controlled according to the production requirement, namely T3 is independently controlled;
if T0-T2 is more than 20 ℃ and T3-T2 is more than 10 ℃, automatically starting a ground coil hot water supply water pump to stabilize the dynamic balance of the indoor temperature set value and the detection value:
(1) If 15 ℃ is higher than T3-T2 is higher than 10 ℃, controlling the flow of the water supply pump of the ground coil hot water to be 80% of the rated flow after the rated flow enables T1 to reach T0 for the first time, and enabling |T0-T1| to be less than or equal to 2 ℃;
(2) If the temperature is 20 ℃ to be more than T3-T2 and is more than or equal to 15 ℃, controlling the flow of the water supply pump for the coil hot water to be 60% of the rated flow after the rated flow enables T1 to reach T0 for the first time, and enabling the I T0-T1I to be less than or equal to 2 ℃;
(3) If T3-T2 is more than or equal to 20 ℃, controlling the flow of the water supply pump of the ground coil hot water to be 40% of the rated flow after T1 reaches T0 for the first time at the rated flow, and enabling |T0-T1| to be less than or equal to 2 ℃;
and repeating the control logic when the temperature is |T0-T1| >2 ℃ in the heating steady state.
The anti-condensation water supply temperature algorithm provided by the invention comprises the following steps:
the indoor air humidity is detected in real time through the indoor humidity detection probe 9, the cold water supply temperature is intelligently adjusted through the anti-condensation water supply temperature algorithm calculation, the floor-tube radiation air conditioner refrigerating function is manually started and closed, and the automatic starting and stopping functions are avoided.
Set dew point temperature t=aΦ 3 +bΦ 2 +cΦ+d, where a, b, c, d is a constant, Φ is the indoor relative humidity;
if the indoor relative humidity is set manually, setting the indoor relative humidity to be phi 1, setting the dew point temperature corresponding to T0 to be T1, and detecting the indoor air relative humidity to be phi 2, wherein the dew point temperature corresponding to T1 is T2;
if T2-T1 is more than 5 ℃, the water pump for ground coil cold water supply is used for supplying water at the temperature of T1-2 ℃ and the rated flow until the temperature of T2-T1 is less than 2 ℃, at the moment, the water pump for ground coil cold water supply is used for supplying water at the temperature of t1+1 ℃ and 60% of the rated flow, the humidity steady state of T2> t1+0.5 ℃ and the humidity of T1-T0 is less than or equal to 1 ℃ is maintained, and the refrigerating and anti-condensation effects of the air conditioner are achieved;
if T2-T1 is less than or equal to 5 ℃, the ground coil cold water supply water pump supplies water at the temperature of T1-1 ℃ and the rated flow until |t2-t1| <1 ℃, at this time, the ground coil cold water supply water pump supplies water at the temperature of t1+1 ℃ and 60% of the rated flow, and the humidity steady state of t2> t1+0.5 ℃ and |t1-t0| <1 ℃ is maintained, so that the air conditioner refrigeration anti-condensation effect is achieved;
if T2 is less than or equal to t1+0.5deg.C or |T1-T0| > 1deg.C in the air conditioner refrigeration steady state, repeating the control logic;
if the indoor relative humidity requirement is not set manually, starting the indoor initial relative humidity of the ground coil radiation air conditioner refrigeration function to be phi 3, and setting the dew point temperature corresponding to T0 to be T3, wherein a T1 initial value is provided;
the ground coil cold water supply pump supplies water at the temperature of t3+ (T1-T3) multiplied by 40% and rated flow, so that T1 is gradually reduced until the temperature of the ground coil cold water supply pump is not more than |T1-T0| and is not more than 1 ℃, and at the moment, the ground coil cold water supply pump supplies water at the temperature of 40% of the current water temperature and the rated flow, so that the humidity steady state of the temperature of the ground coil cold water supply pump is not more than |T1-T0| and is not more than 1 ℃ is maintained, and the refrigerating and anti-condensation effects of an air conditioner are achieved;
and repeating the control logic if the temperature of the air conditioner is |T1-T0| >1 ℃ in the refrigerating steady state.
The present invention corresponds to the problems of the air conditioning system of the existing tall factory building pointed out in the background art, and the description of the technology and the principle thereof mainly used in the improvement measures adopted for each problem is as follows.
(1) Radiation heating principle and technology:
the floor coil radiation heating technology is an energy-saving environment-friendly healthy heating technology which is suitable for heating a large space, a three-dimensional heat source space is formed by passing hot water into the floor coil to heat the floor, then radiating the roof and the surrounding walls, then directly heating a human body through heat radiation, and indirectly heating the human body through heat convection of indoor air and an enclosure structure, so that a heating cycle is completed. Because the angle coefficient between the roof and the ground in the high and large factory building is the largest and the radiant heating energy efficiency ratio is the highest, the invention arranges the aluminum foil reflecting film structural layer 17 contacted with indoor air on the roof, thereby saving energy and heating. The aluminum foil reflective film structural layer 17 is not arranged on the wall surfaces around, so that initial investment is saved; the cement table 7 is supported by the inner wall and the outer wall, so that a heat exchange heat preservation cavity 19 is formed between the inner wall and the outer wall of the factory building, the air in the heat exchange heat preservation cavity 19 has the function of isolating cold air outside in winter from entering the factory building, the indoor heat preservation function is achieved, the heat exchange heat preservation cavity 19 is heated by hot air convection in the heat exchange heat preservation cavity 19, and then indoor radiation heating is achieved. The invention also uses the outer wall temperature detection probe 11 and the inner wall temperature detection probe 12 to intelligently adjust the water supply temperature through the calculation of a heating water temperature energy-saving algorithm, gives consideration to the comfort of the human body and the energy saving of a heat source, and fully utilizes the heat energy byproducts of the production line.
(2) Radiation air conditioner refrigeration combines dew point real-time detection anti-condensation principle and technology:
the cold water is introduced into the ground coil in summer, so that the energy-saving environment-friendly healthy ground coil radiation air-conditioning refrigeration technology suitable for high-large space air-conditioning refrigeration is realized, the annual working condition use of the ground coil is realized, and the investment and the occupied area of refrigeration equipment are saved. The ground coil is internally communicated with cold water to refrigerate the ground, then the roof and the surrounding walls are cooled and radiated to form a three-dimensional cold source space, the human body is directly cooled by cold radiation, and the human body is indirectly cooled by cold convection of indoor air and an enclosure structure, so that the air-conditioning refrigeration cycle is completed. Because the angle coefficient between the roof and the ground in the high and large factory building is the largest and the radiation refrigeration energy efficiency ratio is the highest, the invention arranges the aluminum foil reflecting film structural layer 17 contacted with indoor air on the roof, thereby saving energy and refrigerating air conditioner. Meanwhile, the air in the heat exchange and heat preservation cavity 19 provided by the invention has the function of blocking the heat energy outside in summer from entering the factory building, and has the function of preserving indoor cold.
The dew point real-time detection anti-condensation principle and technology are the safety guarantee measures of the matched radiation air conditioner refrigeration principle and technology. Implementing the radiation air-conditioning refrigeration technology needs to ensure that the temperature of a cold radiation surface is above the dew point temperature of indoor air in real time, so that dew condensation on the surfaces of indoor equipment and objects can be avoided, and the operation safety and stability of a production line are ensured. The indoor humidity is detected in real time through the indoor humidity detection probe 9, and the cold water supply temperature is intelligently regulated through the anti-condensation water supply temperature algorithm calculation, so that the refrigerating effect of the air conditioner, the human comfort and the operation safety of a production line are considered.
(3) The air conditioning module combines iteration principles and techniques:
the air conditioning module 2 is an exhaust comprehensive mechanism required by a production line process, the air extractor 4 provides exhaust power, and the primary cloth bag filter 5 removes large-particle slag dust and protects the use safety of subsequent process components. The drawer type convenient functional material combination module 3 capable of being pulled out and replaced is a core functional module, and provides ordered combination of temperature, humidity and purification functions and heat energy recycling. The air supply port 6 supplies hot air necessary for heating. The primary cloth bag filter 5 and the functional material combination module 3 can be conveniently replaced after the capacity is saturated, and the phase change heat storage material of the functional material combination module 3 not only provides the function of prolonging office on duty heating time after the production line is stopped in winter, but also provides the function of storing the heat produced by the production line in summer and assisting in reducing the indoor temperature of a factory building.
(4) The energy-saving principle and technology of the ventilation air conditioner of the enclosure structure:
the heat exchange and heat preservation cavity 19 is formed by fixing the inner wall and the outer wall by the inner wall and outer wall supporting cement table 7, the inner wall and the outer wall are fixed by the inner wall and outer wall supporting cement table 7 on the ground and the roof, a cavity for hot air flowing and heating of a production line is formed, waste heat of the production line is recycled, and heating energy efficiency is improved. After the exhaust waste heat of the production line absorbs heat through the phase change heat storage material in summer, the temperature is lower than the temperature of the outdoor outer wall, so that the indoor air temperature can be reduced in an auxiliary manner; even if no phase change heat storage material exists, the air conditioning module 2, the exhaust fan 15 and the heat exchange and insulation cavity 19 form an air flow channel which can reduce the temperature of the inner wall and the outer wall and assist in reducing the indoor air temperature; even if the phase change heat storage material is not used, the production line is stopped, and the air in the heat exchange and heat preservation cavity 19 can form a chimney effect through the exhaust fan 15 to assist in reducing the indoor air temperature.
(5) Factory building safety protection design step by step:
when wall collision such as truck collision and mechanical collision occurs outside the factory building, the heat exchange and heat preservation cavity 19 provided by the invention firstly impacts the outer wall during collision, the heat exchange and heat preservation cavity 19 can also form a crumple space to absorb collision energy, property loss is reduced, the work safety of inner walls and people, materials and machines in the inner walls is protected, time is strived for repairing the outer wall, and the safety of the whole structure of the factory building is ensured.
(6) Solar heat storage cascade absorption refrigeration:
the absorption refrigerating system utilizes two substances with larger boiling points to form binary solution, and the low-boiling point refrigerant liquid (high-boiling point substance is absorbent) absorbs heat and gasifies under the condition of low temperature and low pressure to achieve the purpose of refrigeration. The invention uses water as refrigerant and lithium bromide solution as absorbent. Depending on the physical characteristics of the lithium bromide solution, when the heat source temperature is reduced to a certain temperature, the concentration difference between the concentrated solution and the dilute solution will be zero, and the refrigeration system will stop running. Therefore, if the low-grade heat source (65 to 85 ℃) is to be continuously applied to the absorption refrigeration system, a two-stage boosting mode is often adopted. The solar heat storage cascade absorption type refrigerating module provided by the invention adopts a low-temperature hot water type two-stage absorption type refrigerating machine, and the required heat source temperature is only more than 60 ℃, so that the solar heat storage cascade absorption type refrigerating module is particularly suitable for utilizing a solar phase change heat storage technology, breaks solar timeliness constraint and improves the time flexibility of application of an absorption type refrigerating system. The phase change heat storage device R of the solar heat storage cascade absorption type refrigeration module can continuously provide heat source temperature above 70 ℃ on the premise that the hot water temperature in summer is above 85 ℃ by the PV/T heat collector S connected with the phase change heat storage device R, so that the phase change heat storage device R is matched with a two-stage absorption type refrigeration system. The PV/T collector S is used for a refrigeration system in summer and for radiant heating of the floor coil in winter.
The specific structure of the invention needs to be described that the connection relation between the component modules adopted by the invention is definite and realizable, and besides the specific description in the embodiment, the specific connection relation can bring about corresponding technical effects, and on the premise of not depending on execution of corresponding software programs, the technical problems of the invention are solved, the types of the components, the modules and the specific components, the connection modes of the components and the expected technical effects brought by the technical characteristics are clear, complete and realizable, and the conventional use method and the expected technical effects brought by the technical characteristics are all disclosed in patents, journal papers, technical manuals, technical dictionaries and textbooks which can be acquired by a person in the field before the application date, or the prior art such as conventional technology, common knowledge in the field, and the like, so that the provided technical scheme is clear, complete and the corresponding entity products can be reproduced or obtained according to the technical means.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims (8)

1. An air conditioning solar energy integrated system for a large factory building is characterized in that: comprises a production line station arranged in a high factory building, an air conditioning module and a ventilator are arranged above the production line station, the air conditioning module comprises a functional material combination module capable of being pulled and replaced, an air extractor for providing wind power, a primary cloth bag filter for removing large-particle slag dust and an air supply outlet for providing hot air required by heating, an exhaust fan is arranged on a wall opposite to the air supply outlet, and a protective net is arranged at the end of an exhaust pipeline of the exhaust fan;
the drawer type convenient functional material combination module capable of being pulled and replaced is a core functional module, provides ordered combination of temperature, humidity and purification functions and heat energy recycling, can independently adopt phase-change heat storage materials or combination of the phase-change heat storage materials and purification heat release materials and/or moisture absorption heat release materials according to different working conditions on a production line, and not only provides the function of prolonging office on duty heating time after the production line is stopped in winter, but also provides the function of storing heat generated by the production line in summer and assisting in reducing indoor temperature of a factory building;
the high-rise factory building is provided with an inner wall and an outer wall supporting cement table on the ground and the roof, and a heat exchange and heat preservation cavity for hot air flowing and heating of a production line is formed between the inner wall and the outer wall fixed by the inner wall and the outer wall supporting cement table;
the roof of the high and large factory building is provided with an aluminum foil reflecting film structure layer contacted with indoor air, the ground of the high and large factory building is provided with a ground coil structure layer, and the ground coil structure layer comprises a ground coil water return pipeline and a ground coil water supply pipeline;
the top of the high-rise factory building is also provided with a solar photovoltaic and photo-thermal integrated component, the solar photovoltaic and photo-thermal integrated component is used for refrigerating together with an air conditioning module in summer and is used for coupling with a ground coil structure layer for radiation heating in winter;
the indoor humidity detection probe, the outer wall temperature detection probe and the inner wall temperature detection probe are respectively arranged on the walls of the high and large factory buildings, and the indoor humidity detection probe, the outer wall temperature detection probe and the inner wall temperature detection probe are respectively connected with a temperature controller arranged in the high and large factory buildings through wires.
2. The high building air conditioning solar energy integration system of claim 1, wherein: the solar photovoltaic and photo-thermal integrated assembly comprises a photovoltaic part and a photo-thermal part, wherein the photovoltaic part adopts a solar photovoltaic panel, and provides required electric energy for loads of a factory building through a control system, and the photovoltaic part comprises a photovoltaic cell, an MPPT solar controller and a central control panel;
the solar heat storage cascade absorption type refrigeration system comprises a solar heat storage cascade absorption type refrigeration module and is characterized in that the photo-thermal part is composed of a PV/T heat collector, a phase change heat storage device, a condenser, an evaporator, a high-pressure generator, a high-pressure absorber, a high-pressure heat exchanger, a heating water pump, a low-pressure generator, a low-pressure absorber, a low-pressure heat exchanger, a circulating water pump and a cooling tower, the PV/T heat collector is connected with an MPPT solar controller, solar energy is converted into heat energy, a photovoltaic cell is cooled through a thermal circulation mechanism, and the MPPT solar controller is connected with a central control board.
3. The high building air conditioning solar energy integration system of claim 2, wherein: the PV/T heat collector is respectively connected with the high-voltage generator and the low-voltage generator through a phase change heat storage device, cold water is heated by the phase change heat storage device through a heating water pump and then is sent to the PV/T heat collector, hot water supply and hot water return of the PV/T heat collector are respectively connected into a hot water connection port of a ground coil water supply pipeline and a hot water return pipeline, and a ground coil hot water supply pump is arranged on a pipeline connected with the hot water supply of the PV/T heat collector and the ground coil water supply pipeline;
the high-pressure generator is connected with the high-pressure absorber through the high-pressure heat exchanger, the low-pressure generator is connected with the low-pressure absorber through the low-pressure heat exchanger, high-pressure refrigerant vapor of the high-pressure generator enters the low-pressure absorber after passing through the condenser and the evaporator, medium-pressure refrigerant vapor is sent into the high-pressure absorber through the low-pressure generator, an electronic expansion valve is arranged on a pipeline between the condenser and the evaporator, water inflow and return water of the high-pressure absorber, the low-pressure absorber and the condenser come from the cooling tower, cold water supply and cold water return water of the evaporator are respectively connected into cold water connection ports of a ground coil water supply pipeline and a ground coil water return pipeline, and a ground coil cold water supply pump is arranged on a pipeline connected with the cold water supply and the ground coil water supply pipeline of the evaporator;
the phase change heat storage device is characterized in that circulating water pumps are arranged on pipelines connected with the high-pressure generator and the low-pressure generator, and circulating water pumps are arranged on water outlet pipelines connected with the high-pressure absorber and the high-pressure heat exchanger.
4. A high building air conditioning solar energy integration system according to claim 3, wherein: the phase change heat storage device comprises a water outlet, a heat preservation layer, a heat release coil, a heat storage material unit and a water inlet.
5. The high building air conditioning solar energy integration system of claim 2, wherein: the PV/T heat collector comprises a PV component, a copper heat absorption layer, a water delivery copper pipe, a packaging layer, a heat preservation layer, a waterproof layer and a backboard from top to bottom.
6. A method for air conditioning a tall building, which adopts the tall building air conditioning solar energy integrated system as defined in any one of claims 2 to 5, and is characterized in that: the method comprises the following steps:
the refrigeration system operates in summer: starting an air conditioning module for ventilation, manually starting and closing a ground coil radiation air conditioning refrigeration function, introducing cold water into the ground coil, and under the condition of effective solar radiation, regulating a temperature controller connected with a PV/T heat collector to control the start and stop of a heating water pump, wherein the PV/T heat collector collects and converts light and heat to heat circulating water in the PV/T heat collector;
when the water temperature in the PV/T heat collector reaches more than 90 ℃, the heating water pump is started, when the water temperature is lower than 85 ℃, the heating water pump is closed, and circulating hot water reaching the heat source temperature of the refrigerating system enters the phase change heat storage device to convert the hot water into heat storage material phase change latent heat for storage;
after the water temperature in the heat release coil of the phase change heat storage device reaches the use temperature, the circulating water pump is started, so that the hot water heated by the heat release coil becomes a heating source of the low-pressure generator and the high-pressure generator;
in the refrigerating process, the indoor air humidity is detected in real time through an indoor humidity detection probe, and the cold water supply temperature of the floor pipe is intelligently adjusted through calculation of an anti-condensation water supply temperature algorithm;
radiation heating operation in winter: the floor pipe radiation heating function and the air conditioning module are started, hot water is introduced into the floor pipe to heat the floor, so that a heat radiation roof and surrounding walls are heated, a three-dimensional heat source space is formed, the heat exchange and heat preservation cavity is used for preserving heat in a room, the heat exchange and heat preservation cavity is heated by hot air convection in the heat exchange and heat preservation cavity, and then the indoor radiation is heated, so that heating circulation is completed;
hot water in the ground coil is supplied through the PV/T heat collector;
meanwhile, the water supply temperature is intelligently adjusted through the calculation of a heating water temperature energy-saving algorithm by the outer wall temperature detection probe and the inner wall temperature detection probe.
7. The method for air conditioning a tall building according to claim 6, wherein: the anti-condensation water supply temperature algorithm comprises the following steps:
setting the room temperature as T0, detecting the room temperature as T1, the temperature of the outer wall as T2, the temperature of the inner wall as T3 and the water supply temperature of the floor pipe as 45 ℃;
set dew point temperature t=aΦ 3 +bΦ 2 +cΦ+d, where a, b, c, d is a constant, Φ is the indoor relative humidity;
if the indoor relative humidity is required to be set manually, setting the indoor relative humidity to be phi 1, setting the dew point temperature corresponding to T0 to be T1, and detecting the indoor air relative humidity to be phi 2, wherein the dew point temperature corresponding to T1 is T2;
if T2-T1 is more than 5 ℃, the water pump for ground coil cold water supply is used for supplying water at the temperature of T1-2 ℃ and the rated flow until the temperature of T2-T1 is less than 2 ℃, at the moment, the water pump for ground coil cold water supply is used for supplying water at the temperature of t1+1 ℃ and 60% of the rated flow, the humidity steady state of T2> t1+0.5 ℃ and the humidity of T1-T0 is less than or equal to 1 ℃ is maintained, and the refrigerating and anti-condensation effects of the air conditioner are achieved;
if T2-T1 is less than or equal to 5 ℃, the ground coil cold water supply water pump supplies water at the temperature of T1-1 ℃ and the rated flow until |t2-t1| <1 ℃, at this time, the ground coil cold water supply water pump supplies water at the temperature of t1+1 ℃ and 60% of the rated flow, and the humidity steady state of t2> t1+0.5 ℃ and |t1-t0| <1 ℃ is maintained, so that the air conditioner refrigeration anti-condensation effect is achieved;
if T2 is less than or equal to t1+0.5deg.C or |T1-T0| > 1deg.C in the air conditioner refrigeration steady state, repeating the control logic;
if the indoor relative humidity requirement is not set manually, starting the indoor initial relative humidity of the ground coil radiation air conditioner refrigeration function to be phi 3, and setting the dew point temperature corresponding to T0 to be T3, wherein a T1 initial value is provided;
the ground coil cold water supply pump supplies water at the temperature of t3+ (T1-T3) multiplied by 40% and rated flow, so that T1 is gradually reduced until the temperature of the ground coil cold water supply pump is not more than |T1-T0| and is not more than 1 ℃, and at the moment, the ground coil cold water supply pump supplies water at the temperature of 40% of the current water temperature and the rated flow, so that the humidity steady state of the temperature of the ground coil cold water supply pump is not more than |T1-T0| and is not more than 1 ℃ is maintained, and the refrigerating and anti-condensation effects of an air conditioner are achieved;
and repeating the control logic if the temperature of the air conditioner is |T1-T0| >1 ℃ in the refrigerating steady state.
8. The method for air conditioning a tall building according to claim 6, wherein:
the heating water temperature energy-saving algorithm comprises the following steps:
setting the room temperature as T0, detecting the room temperature as T1, the temperature of the outer wall as T2, the temperature of the inner wall as T3 and the water supply temperature of the floor pipe as 45 ℃;
if T0-T2 is less than or equal to 20 ℃, the floor pipe hot water supply water pump is not started, and the air pump of the production line station is independently controlled according to the production requirement, namely T3 is independently controlled;
if T0-T2 is more than 20 ℃ and T3-T2 is more than 10 ℃, automatically starting a ground coil hot water supply water pump to stabilize the dynamic balance of the indoor temperature set value and the detection value:
(1) If 15 ℃ is higher than T3-T2 is higher than 10 ℃, controlling the flow of the water supply pump of the ground coil hot water to be 80% of the rated flow after the rated flow enables T1 to reach T0 for the first time, and enabling |T0-T1| to be less than or equal to 2 ℃;
(2) If the temperature is 20 ℃ to be more than T3-T2 and is more than or equal to 15 ℃, controlling the flow of the water supply pump for the coil hot water to be 60% of the rated flow after the rated flow enables T1 to reach T0 for the first time, and enabling the I T0-T1I to be less than or equal to 2 ℃;
(3) If T3-T2 is more than or equal to 20 ℃, controlling the flow of the water supply pump of the ground coil hot water to be 40% of the rated flow after T1 reaches T0 for the first time at the rated flow, and enabling |T0-T1| to be less than or equal to 2 ℃;
and repeating the control logic when the temperature is |T0-T1| >2 ℃ in the heating steady state.
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