CN108224623B - Passive fresh air system using dry air energy and solar energy as driving energy - Google Patents

Passive fresh air system using dry air energy and solar energy as driving energy Download PDF

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Publication number
CN108224623B
CN108224623B CN201711332476.5A CN201711332476A CN108224623B CN 108224623 B CN108224623 B CN 108224623B CN 201711332476 A CN201711332476 A CN 201711332476A CN 108224623 B CN108224623 B CN 108224623B
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China
Prior art keywords
air
tower
house
passive
chimney
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CN201711332476.5A
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CN108224623A (en
Inventor
黄翔
郭志成
康雅雄
贺红霞
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ONOFF ELECTRIC Co.,Ltd.
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Xian Polytechnic University
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Classifications

    • 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
    • F24F5/0035Air-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 evaporation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/28Arrangement or mounting of filters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00Ventilation

Abstract

The invention discloses a passive fresh air system taking dry air energy and solar energy as driving energy sources, which comprises a passive evaporative cooling air tower and a solar chimney, wherein the passive evaporative cooling air tower and the solar chimney are respectively arranged on two opposite sides of a house, an indoor air inlet communicated into a room is reserved at the bottom of the passive evaporative cooling air tower close to the house wall, the solar chimney is arranged at the upper part of the house wall, and an indoor air outlet is reserved at the bottom of the solar chimney close to the house wall. The passive fresh air system combines the evaporative cooling technology and the solar energy technology, and cool and fresh air is sent into a room by means of natural convection and is exhausted in an air flow organization mode of lower air sending and upper air discharging, so that healthy and comfortable fresh air is enjoyed, and the cost of high energy consumption is avoided.

Description

Passive fresh air system using dry air energy and solar energy as driving energy
Technical Field
The invention belongs to the technical field of air conditioning equipment, and relates to a passive fresh air system taking dry air energy and solar energy as driving energy.
Background
In daily life, more than 70% of the time is spent indoors, and the time spent indoors by urban population is even more than 90%, and related data show that the concentration of indoor air pollutants is 2-5 times, sometimes even dozens or hundreds of times of that of outdoor pollutants. Consequently, new trend system demand sharply increases, but there are many problems in current new trend system, for example: the problems of high energy consumption caused by long-time operation, limited application caused by complicated pipe arrangement, environmental pollution caused by frequent replacement of filters, low heat recovery efficiency and the like restrict the development of energy conservation, environmental protection, convenience and high efficiency of a fresh air system. Therefore, the application of renewable energy to realize a passive fresh air system is not in line with the national sustainable development strategy.
Most areas in China, especially northwest areas, have extremely thick natural conditions, large meteorological span, sufficient illumination, hot and dry summer, rich renewable energy sources such as dry air energy and solar energy, and are high application areas of evaporative cooling technology and solar energy technology.
Disclosure of Invention
The invention aims to provide a passive fresh air system taking dry air energy and solar energy as driving energy sources, which combines an evaporative cooling technology with a solar energy technology, enables air flow to be discharged in an air flow organization mode of lower delivery and upper discharge by means of natural convection and has low energy consumption.
The invention adopts the technical scheme that a passive fresh air system taking dry air energy and solar energy as driving energy comprises a passive evaporative cooling air tower and a solar chimney which are respectively arranged on two opposite sides of a house, wherein an indoor air inlet communicated into a room is reserved at the bottom of the passive evaporative cooling air tower close to the house wall, the solar chimney is arranged at the upper part of the house wall, and an indoor air outlet is reserved at the bottom of the solar chimney close to the house wall.
The present invention is also characterized in that,
the passive evaporative cooling wind tower comprises a heat-insulating tower body, a plurality of outdoor air inlets are uniformly formed in the upper portion of the tower body around the outer side of the tower body, a coarse-effect filtering section, a medium-effect filtering section, an atomizing direct evaporative cooling section are sequentially arranged in the tower body, the outdoor air inlets are formed in the outer side of the tower body corresponding to the coarse-effect filtering section, indoor air inlets are formed in the bottom of the atomizing direct evaporative cooling section close to a house wall, efficient filters are further arranged in the indoor air inlets, and a tower cover is further arranged at the top of the tower body.
The coarse filter section is a coarse filter arranged in an outdoor air inlet.
The middle-effect filtering section is a bag filter.
The direct evaporative cooling section of atomizing is including setting up the atomizer and the water tank of setting in the tower body bottom in the middle-effect filter section below, and atomizer and water tank pass through water piping connection.
The water tank is also connected with an automatic water replenishing pipe.
The water supply pipe is also provided with a circulating water pump and a water processor.
And a variable frequency air volume adjusting valve a is also arranged in the indoor air inlet.
The solar chimney comprises a chimney body arranged above a house wall, a glass curtain wall is arranged on one side of the chimney body, which is far away from the house wall, an insulating wall is arranged on one side of the chimney body, which is on the house wall, an indoor air outlet is arranged below the insulating wall, a heat storage wall is further arranged on one side of the insulating wall, which is far away from the house wall, an outdoor air outlet is arranged above the glass curtain wall, and a glass cover plate is further arranged at the top of the chimney body.
And a variable frequency air volume adjusting valve b is arranged in the indoor air outlet.
The invention has the beneficial effects that:
(1) the passive fresh air system completely adopts renewable energy sources: the passive evaporative cooling downward ventilation cooling technology and the solar chimney technology are combined by dry air energy and solar energy, cool and fresh air is sent into a room by means of natural convection and is discharged in an air flow organization form of downward sending and upward discharging, healthy and comfortable fresh air is enjoyed, and the cost of high energy consumption is avoided;
(2) according to the passive fresh air system, the spray type direct evaporative cooling section is additionally arranged in the passive evaporative cooling air tower, so that fresh air fed into a room can be cooled and humidified at high temperature in summer, the power of natural flow of air is increased, the section can be selected not to be opened in winter or transition seasons, the whole system is high in flexibility and easy to realize, energy is saved, and the spray has a certain wet type filtering effect on the fresh air;
(3) the invention relates to a passive fresh air system.A coarse filter is additionally arranged at the air inlet section on the periphery of the upper part of a passive evaporative cooling air tower body, then a bag filter is additionally arranged in an air tower, the wet type filtering effect of spraying is added, and a high-efficiency filter of equipment in an indoor air inlet is arranged, so that coarse-medium-efficiency-wet-type-high-efficiency four-stage filtering is formed.
Drawings
Fig. 1 is a schematic structural diagram of a passive fresh air system according to the present invention.
In the figure, 1, a passive evaporative cooling air tower, 2, a tower cover, 3, a coarse filter section, 4, a medium filter section, 5, a spray type direct evaporative cooling section, 6, a tower body, 7, an outdoor air inlet, 8, a coarse filter, 9, a bag filter, 10, an atomizer, 11, a circulating water pump, 12, a water processor, 13, a water tank, 14, an automatic water replenishing pipe, 15, a water supply pipe, 16, a solar chimney, 17, a glass cover plate, 18, a chimney body, 19, a glass curtain wall, 20, a heat storage wall, 21, a heat insulation wall, 22, an outdoor air outlet, 23, an indoor air inlet, 24, an indoor air inlet, 25, a variable-frequency air volume adjusting valve a, 26, a high-efficiency filter, 27, an indoor air outlet and 28, a variable-frequency air volume adjusting valve b are arranged.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The technical scheme adopted by the invention is that as shown in figure 1, the passive fresh air system taking dry air energy and solar energy as driving energy comprises a passive evaporative cooling air tower 1 and a solar chimney 16 which are respectively arranged at two opposite sides of a house, an indoor air inlet 24 leading into a room is reserved at the bottom of the passive evaporative cooling air tower 1 close to the house wall, the solar chimney 16 is arranged at the upper part of the house wall, and an indoor air outlet 27 is reserved at the bottom of the solar chimney 16 close to the house wall.
Passive form evaporation cooling wind tower 1 includes adiabatic tower body 6, the upper portion of tower body 6 evenly is provided with a plurality of outdoor air intakes 7 around the tower body 6 outside, by last coarse filter stage 3 that has set gradually under to in the tower body 6, well effect filter stage 4, atomizing direct evaporation cooling section 5, outdoor air intake 7 sets up in the 6 outsides of tower body that coarse filter stage 3 corresponds, indoor air intake 24 sets up in atomizing direct evaporation cooling section 5 bottom near the house wall, still be provided with high efficiency filter 26 in the indoor air intake 24, the top of tower body 6 still is provided with tower lid 2.
The coarse filter section 3 is a coarse filter 8 arranged in an outdoor air inlet 7.
The middle-effect filtering section 4 is a bag filter 9.
The spray type direct evaporative cooling section 5 comprises an atomizer 10 arranged below the middle-effect filtering section 4 and a water tank 13 arranged at the bottom of the tower body 6, and the atomizer 10 and the water tank 13 are connected through a water supply pipe 15.
The water tank 13 is also connected with an automatic water replenishing pipe 14.
The water supply pipe 15 is also provided with a circulating water pump 11 and a water treatment device 12.
The indoor air inlet 24 is also internally provided with a variable frequency air quantity regulating valve a 25.
The solar chimney 16 comprises a chimney body 18 arranged above the house wall, a glass curtain wall 19 is arranged on one side of the chimney body 18 far away from the house wall, a heat insulation wall 21 is arranged on one side of the chimney body 18 on the house wall, an indoor air outlet 27 is arranged below the heat insulation wall 21, a heat storage wall 20 is further arranged on one side of the heat insulation wall 21 far away from the house wall, an outdoor air outlet 22 is arranged above the glass curtain wall 19, and a glass cover plate 17 is further arranged at the top of the chimney body 18.
The indoor air outlet 27 is provided with a variable frequency air volume regulating valve b 28.
The working process of the passive fresh air system comprises the following steps:
(1) operation in summer
Outdoor fresh air enters a tower body 6 from an outdoor air inlet 7 arranged at the upper part of the tower body of a passive evaporative cooling air tower 1, and sinks due to high density of cold air to generate a counter-buoyancy ventilation effect, the fresh air entering the tower body 6 sequentially passes through a coarse filter 8 to realize coarse filtration, flows into a bag filter 9 of a middle-effect filtering section 4 to realize middle-effect filtration, flows into a spray type direct evaporative cooling section 5 to realize cooling humidification and wet filtration, is efficiently filtered through a high-efficiency filter 26 from an indoor air inlet 24 and then is sent into an indoor 23 to be ventilated and cooled, indoor air enters a solar chimney 16 through an indoor air outlet 27, sunlight irradiates on a glass curtain wall 19 and a glass cover plate 17 to generate a large amount of heat to be stored in a heat storage wall 20, the heat insulation wall 21 can prevent heat loss, and the temperature of the air entering the solar chimney 16 is continuously raised from bottom to top in, spontaneously flows to the outdoor exhaust outlet 22 along the chimney body 18 according to the chimney effect and is exhausted;
the working process of the spray type direct evaporation cooling section 5 is as follows: the water in the water tank 13 is improved by the circulating water pump 11, flows through the water treatment device 12 through the water supply pipe 15, is filtered and flows into the atomizer 10, and the atomizer 10 is atomized and sprayed into the tower body 6, so that the air is cooled and humidified;
the variable frequency air volume regulating valve a25 arranged in the indoor air inlet 24 and the variable frequency air volume regulating valve b28 arranged in the indoor air outlet 27 are respectively used for regulating the air volume entering the room and the air volume discharged from the room.
(2) Winter and transition season
The spray type direct evaporative cooling section 5 is not opened, outdoor fresh air enters the tower body 6 from an outdoor air inlet 7 arranged at the upper part of the tower body of the passive evaporative cooling air tower 1, because the cold air is sunk with high density and generates anti-buoyancy ventilation effect, the fresh air entering the tower body 6 sequentially passes through the coarse filter 8 to realize coarse filtration and flows into the bag filter 9 of the middle-effect filtering section 4 to realize middle-effect filtration, then is efficiently filtered by the high-efficiency filter 26 from the indoor air inlet 24 and then is sent into the indoor 23 to be ventilated, the indoor air enters the solar chimney 16 through the indoor air outlet 27, sunlight irradiates on the glass curtain wall 19 and the glass cover plate 17 to generate a large amount of heat to be stored in the heat storage wall 20, the heat insulation wall 21 can prevent the heat loss, the temperature of the air entering the solar chimney 16 is continuously increased from bottom to top in the chimney body 18, and the air spontaneously flows to the outdoor air outlet 22 along the chimney body 18 to be exhausted according to the chimney effect;
the variable frequency air volume regulating valve a25 arranged in the indoor air inlet 24 and the variable frequency air volume regulating valve b28 arranged in the indoor air outlet 27 are respectively used for regulating the air volume entering the room and the air volume discharged from the room.

Claims (6)

1. The passive fresh air system is characterized by comprising a passive evaporative cooling air tower (1) and a solar chimney (16) which are respectively arranged on two opposite sides of a house, wherein an indoor air inlet (24) communicated into a room is reserved at the bottom of the passive evaporative cooling air tower (1) close to the house wall, the solar chimney (16) is arranged at the upper part of the house wall, and an indoor air outlet (27) is reserved at the bottom of the solar chimney (16) close to the house wall;
the passive evaporative cooling air tower (1) comprises a heat-insulating tower body (6), a plurality of outdoor air inlets (7) are uniformly formed in the upper portion of the tower body (6) around the outer side of the tower body (6), a coarse-effect filtering section (3), a medium-effect filtering section (4) and a spray type direct evaporative cooling section (5) are sequentially arranged in the tower body (6) from top to bottom, the outdoor air inlets (7) are formed in the outer side of the tower body (6) corresponding to the coarse-effect filtering section (3), indoor air inlets (24) are formed in the bottom, close to a house wall, of the spray type direct evaporative cooling section (5), efficient filters (26) are further arranged in the indoor air inlets (24), and a tower cover (2) is further arranged at the top of the tower body (6);
the solar chimney (16) comprises a chimney body (18) arranged above a house wall, one side, far away from the house wall, of the chimney body (18) is a glass curtain wall (19), one side, on the house wall, of the chimney body (18) is a heat insulation wall body (21), the indoor air outlet (27) is arranged below the heat insulation wall body (21), one side, far away from the house wall, of the heat insulation wall body (21) is also provided with a heat storage wall body (20), an outdoor air outlet (22) is arranged above the glass curtain wall (19), and the top of the chimney body (18) is also provided with a glass cover plate (17);
the coarse filter section (3) is a coarse filter (8) arranged in an outdoor air inlet (7);
the middle-effect filtering section (4) is a bag filter (9).
2. The passive fresh air system according to claim 1, wherein the spray type direct evaporative cooling section (5) comprises an atomizer (10) arranged below the intermediate-effect filtering section (4) and a water tank (13) arranged at the bottom of the tower body (6), and the atomizer (10) and the water tank (13) are connected through a water supply pipe (15).
3. Passive fresh air system according to claim 2, characterized in that an automatic water replenishing pipe (14) is also connected to the water tank (13).
4. The passive fresh air system according to claim 2, wherein a circulating water pump (11) and a water treatment device (12) are further provided on the water supply pipe (15).
5. The passive fresh air system according to any one of claims 1 to 4, wherein a variable frequency air volume adjusting valve a (25) is further arranged in the indoor air inlet (24).
6. The passive fresh air system according to claim 1, wherein a variable frequency air volume adjusting valve b (28) is arranged in the indoor air outlet (27).
CN201711332476.5A 2017-12-13 2017-12-13 Passive fresh air system using dry air energy and solar energy as driving energy Active CN108224623B (en)

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CN201711332476.5A CN108224623B (en) 2017-12-13 2017-12-13 Passive fresh air system using dry air energy and solar energy as driving energy

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Application Number Priority Date Filing Date Title
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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109915969A (en) * 2019-02-25 2019-06-21 西安工程大学 A kind of passive type evaporation cooling channel cooling system in conjunction with building

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103256674A (en) * 2013-05-20 2013-08-21 江西理工大学 Coiled tube type wall body strengthening ventilation air-conditioner energy-saving system
WO2015122756A1 (en) * 2014-02-13 2015-08-20 Dirección General De Educación Superior Tecnológica De La Sep Combined air extractor, that uses solar and wind energy, for passively ventilating industrial warehouses, dwellings and/or buildings (solar-wind chimney)
CN206257738U (en) * 2016-11-14 2017-06-16 西安工程大学 Double-deck filler Noiseless type suitable for rural area evaporates cooling channel air-conditioning system
CN107036206A (en) * 2017-03-28 2017-08-11 西安工程大学 A kind of unpowered type Evaporative Cooling Air-conditioning System suitable for crow

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207778659U (en) * 2017-12-13 2018-08-28 西安工程大学 Passive fresh-air system based on dry air energy and Driven by Solar Energy

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103256674A (en) * 2013-05-20 2013-08-21 江西理工大学 Coiled tube type wall body strengthening ventilation air-conditioner energy-saving system
WO2015122756A1 (en) * 2014-02-13 2015-08-20 Dirección General De Educación Superior Tecnológica De La Sep Combined air extractor, that uses solar and wind energy, for passively ventilating industrial warehouses, dwellings and/or buildings (solar-wind chimney)
CN206257738U (en) * 2016-11-14 2017-06-16 西安工程大学 Double-deck filler Noiseless type suitable for rural area evaporates cooling channel air-conditioning system
CN107036206A (en) * 2017-03-28 2017-08-11 西安工程大学 A kind of unpowered type Evaporative Cooling Air-conditioning System suitable for crow

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Effective date of registration: 20210330

Address after: 065200 No.1 Yanxin street, Yanjiao Development Zone, Sanhe City, Langfang City, Hebei Province

Patentee after: ONOFF ELECTRIC Co.,Ltd.

Address before: 710048 No. 19 Jinhua South Road, Shaanxi, Xi'an

Patentee before: XI'AN POLYTECHNIC University