CN110762668A - Industrial air conditioning combining solar technology and multi-stage evaporative cooling technology - Google Patents

Abstract

The industrial air conditioner combining solar energy technology and multi-stage evaporative cooling technology disclosed in the present invention includes an evaporative cooling unit, and the evaporative cooling unit is connected to a surface air-cooling condenser located in a thermal power plant through a secondary air supply pipe. The steam generator is connected to the boiler, the plate heat exchanger and the radiator in turn through the water pipe network; the evaporative cooling unit is connected to the end device of the room through the air supply pipe; the evaporative cooling unit is also connected to the photoelectric unit. The industrial air conditioner of the invention adopts solar power generation panels to supply power to the workshop and equipment, thereby saving electricity costs; the air is cooled in summer and transitional seasons, and the waste heat of the power plant is used for heating, thereby improving energy saving; three-dimensional water distribution in the direct evaporative cooling section, Improve the efficiency of evaporative cooling; the secondary air of the indirect evaporative cooler enters the surface air-cooled condenser and exchanges heat with the exhaust gas of the steam turbine. The exhaust gas of the steam turbine is cooled by the air in the air-cooled condenser and condensed into water to achieve low loss. , has good practical value.

Description

Industrial air conditioning combining solar technology and multi-stage evaporative cooling technology

technical field

The invention belongs to the technical field of air conditioning equipment, and in particular relates to an industrial air conditioner combining solar energy technology and multi-stage evaporative cooling technology.

Background technique

At the beginning of the 20th century, Dr. Carrier invented air conditioners. Air conditioners were originally used in textile mills. In order to meet the requirements of yarn for temperature and humidity, many industries such as pharmaceuticals, electronics, precision instruments, micro components, and computer manufacturing are now in order to improve product quality. Quality, improving production labor efficiency, and improving production process conditions require a good air-conditioning system to ensure the needs of industrial manufacturing, and the requirements for temperature and humidity in the studio are becoming more and more stringent.

At present, my country's energy utilization still has the main problems of low utilization efficiency, poor economic benefits, and great pressure on the ecological environment. my country's energy utilization rate is only about 33%, and at least 50% of industrial energy consumption is directly discarded as waste heat in various forms. But from another point of view, my country's industrial waste heat resources are rich, there is a lot of room for improvement of waste heat utilization rate, and the potential for energy saving is huge. Among them, the renewable energy - the sun provides more energy saving and emission reduction in my country. possible.

In the summer of an industrial plant, the heat dissipated by the machines in the factory and the heat produced by the workers under the high-intensity work of the factory, if only the traditional fan is used to locally cool the room, one is the thermal comfort of the people. Unsatisfactory performance, even has a great impact on the quality of products produced in the factory; and traditional mechanical refrigeration and air conditioning have large initial investment, high operating costs, and waste of energy.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an industrial air conditioner combining solar energy technology and multi-stage evaporative cooling technology, which solves the problem of low utilization rate of waste heat in existing industrial workshops.

The technical solution adopted in the present invention is that an industrial air conditioner combining solar energy technology and multi-stage evaporative cooling technology includes an evaporative cooling unit, and the evaporative cooling unit is connected to a surface air-cooled condenser located in a thermal power plant through a secondary air supply pipe , the surface air-cooled condenser is connected to the boiler, the plate heat exchanger and the radiator in turn through the water pipe network;

The evaporative cooling unit is connected to the end device of the room through the air supply pipe;

The evaporative cooling unit is also connected to the photoelectric unit, the photoelectric unit includes a solar power generation panel, and the solar panel is connected to the inverter, the controller and the storage battery in sequence through wires.

The present invention is also characterized in that,

The evaporative cooling unit includes a casing. The casing is provided with an air inlet and an air outlet on both sides. The air inlet is provided with an air inlet pipe, a primary filter, a horizontal pipe indirect evaporative cooler, and a direct evaporative cooling according to the air flow direction. device, water baffle and fan b;

The top of the horizontal tube indirect evaporative cooler is provided with a secondary air outlet pipe, and the corresponding shell at the bottom of the horizontal tube indirect evaporative cooler is provided with a secondary air inlet, and the secondary air outlet pipe is connected to the secondary air supply. Air duct; the air outlet is connected to the air supply duct.

The horizontal tube indirect evaporative cooler includes several heat exchange tube bundles placed horizontally. The top of the heat exchange tube bundle is provided with a first water distributor, and the bottom of the heat exchange tube bundle is provided with a circulating water tank a. The first water distributor and the circulating water tank a pass through the first water supply pipe connected, the first water supply pipe is provided with a water pump a;

The battery is connected to the water pump a and the fan b respectively through wires.

The direct evaporative cooler includes a filler, the top of the filler is provided with a second water distributor, and the bottom of the filler is provided with a circulating water tank b, the second water distributor and the circulating water tank b are connected through a second water supply pipe, and a water pump is also provided on the second water supply pipe b.

The circulating water tank b is also connected to the third water distributor through the third water supply pipe, the third water distributor is located between the horizontal tube indirect evaporative cooler and the filler, and sprays toward the filler, and the third water supply pipe is provided with a water pump d;

The battery is connected to the water pump b and the water pump d respectively through wires.

A fan a is arranged in the secondary air outlet pipe; the fan a is connected to the battery through a wire.

The water pipe network includes the water pipe G5 connecting the surface air-cooled condenser and the boiler. The boiler and the plate heat exchanger form a closed pipe through the water pipe G2 and the water pipe G1; the radiator and the plate heat exchanger form a closed pipe through the water pipe G3 and the water pipe G4. road;

Radiators and plate heat exchangers are located inside the room.

The water pipe G2 is also provided with a water pump c; the water pump c is connected to the battery through a wire.

The beneficial effects of the present invention are:

(1) The industrial air conditioner of the present invention adopts solar power generation panels to supply power to the air conditioning system and other equipment, and in the case of excess power storage, it is stored in the storage battery, which greatly saves the electricity cost of the industrial plant;

(2) The industrial air conditioner of the present invention uses direct evaporative cooling, indirect evaporative cooling and combined use with the waste heat of the thermal power plant. In summer, the air is cooled and humidified by multi-stage evaporative cooling, and then sent into the room. The waste heat is connected to the heat dissipation equipment of the workshop for heating through the heat exchanger, and can be used in transitional seasons. The use of evaporative cooling improves the energy saving of the system, making it an energy-saving and environmentally friendly green air-conditioning system;

(3) The industrial air conditioner of the present invention adopts the three-dimensional water distribution combined by the high-pressure spray device and the water distributor, and the water sprayed from the high-pressure spray device has a long contact time with the pre-cooled primary air and sufficient heat exchange, so as to achieve Lower wet bulb temperature and humidity regulation standards;

(4) In the industrial air conditioner of the present invention, the secondary air enters the surface-type air-cooled condenser and exchanges heat with the exhaust gas of the steam turbine. The exhaust gas of the steam turbine is cooled by the air in the air-cooled condenser and condensed into water, and then the direct air-cooled heat exchange is performed. During the process, the secondary air flowing through the outside of the radiator finned tube is used to condense the saturated steam of the heat medium squeezed from the steam turbine in the vacuum state in the condenser, and the condensed water is sent back to the boiler to realize energy "low loss".

Description of drawings

Fig. 1 is the structural representation of the industrial air conditioner of the present invention combining solar energy technology and multi-stage evaporative cooling technology;

FIG. 2 is a schematic structural diagram of a photovoltaic unit in an industrial air conditioner of the present invention.

In the figure, 1. Air inlet, 2. Air inlet duct, 3. Primary filter, 4. Horizontal tube indirect evaporative cooler, 5. Fan a, 6. Secondary air outlet duct, 7. Heat exchange tube bundle , 8. Circulating water tank a, 9. First water distributor, 10. First water supply pipe, 11. Water pump a, 12. Third water distributor, 13. Direct evaporative cooler, 14. Second water distributor, 15. Second water supply pipe, 16. Third water supply pipe, 17. Filling, 18. Circulating water tank b, 19. Water pump b, 20. Water baffle, 21. Fan b, 22. Air outlet, 23. Air supply pipe , 24. Secondary air supply pipe, 25. Surface air-cooled condenser, 26. Thermal power plant, 27. Room end device, 28. Solar power panel, 29. Water pump c, 30. Plate heat exchanger, 31 . Radiator, 32. Battery, 33. Inverter, 34. Controller, 35. Water pump d, 36. Housing, 37. Boiler.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

The industrial air conditioner of the present invention combining solar energy technology and multi-stage evaporative cooling technology, as shown in FIG. 1 , includes an evaporative cooling unit, and the evaporative cooling unit is connected to the surface-type air-cooled steam located in the thermal power plant 26 through the secondary air supply pipe 24 The evaporative cooling unit is connected to the room end device 27 through the air supply pipe 23; the evaporative cooling unit is also connected to the photoelectric unit , the photovoltaic unit includes a solar power generation panel 28. As shown in FIG. 2, the solar panel 28 is connected to the inverter 33, the controller 34 and the battery 32 in sequence through wires. The solar energy is utilized through the photovoltaic unit to ensure the power supply for the interior of the air conditioner and other equipment.

The evaporative cooling unit includes a casing 36. The casing 36 is provided with an air inlet 1 and an air outlet 22 on both sides. The air inlet 1 is provided with an air inlet pipe 2, a primary filter 3, a horizontal pipe type indirect air inlet 1 according to the air flow direction. Evaporative cooler 4, direct evaporative cooler 13, water baffle 20 and fan b21; the top of horizontal tube indirect evaporative cooler 4 is provided with a secondary air outlet duct 6, and the shell corresponding to the bottom of horizontal tube indirect evaporative cooler 4 The body is provided with a secondary air inlet, the secondary air outlet pipe 6 is connected to the secondary air supply pipe 24 ; the air outlet 22 is connected to the air supply pipe 23 . The evaporative cooling unit sends the treated primary air to the room end device 27 through the air supply pipe 23, and exchanges heat with the room air; sends the treated secondary air to the surface air-cooled condenser 25, and the surface air-cooled steam The heat exchanger 25 exchanges heat with the exhaust gas of the steam turbine in the power plant. The exhaust gas of the steam turbine is cooled by the air in the surface air-cooled condenser 25 and condensed into water, which is then sent back to the boiler 37. The circulating water in the boiler 37 is connected to the plate heat exchanger. 30 exchanges heat with the radiator 31 .

The horizontal tube type indirect evaporative cooler 4 includes several heat exchange tube bundles 7 placed horizontally. The top of the heat exchange tube bundle 7 is provided with a first water distributor 9, and the bottom of the heat exchange tube bundle 7 is provided with a circulating water tank a8, a first water distributor 9 and a circulating water tank. a8 is connected through the first water supply pipe 10, and the first water supply pipe 10 is provided with a water pump a11; the battery 32 is respectively connected to the water pump a11 and the fan b21 through wires.

The direct evaporative cooler 13 includes a filler 17. The top of the filler 17 is provided with a second water distributor 14, and the bottom of the filler 17 is provided with a circulating water tank b18. The second water distributor 14 and the circulating water tank b18 are connected by a second water supply pipe 15. The water supply pipe 15 is also provided with a water pump b19.

The circulating water tank b18 is also connected to the third water distributor 12 through the third water supply pipe 16. The third water distributor 12 is located between the horizontal tube indirect evaporative cooler 4 and the filler 17, and sprays toward the filler 17, where high pressure is used For the spray technology, a water pump d35 is provided on the third water supply pipe 16; the battery 32 is connected to the water pump b19 and the water pump d35 respectively through wires.

The direct evaporative cooler 13 adopts the top spray and the spray in the air inlet direction to form a three-dimensional spray system, the spray effect is better, and the heat exchange efficiency is improved.

A fan a5 is arranged in the secondary air outlet duct 6 ; the fan a5 is connected to the battery 32 through a wire.

The water pipe network includes a water pipe G5 connecting the surface air-cooled condenser 25 and the boiler 37. The boiler 37 and the plate heat exchanger 30 form a closed pipeline through the water pipe G2 and the water pipe G1; the radiator 31 and the plate heat exchanger 30 pass through the water pipe G3 , the water pipe G4 forms a closed pipeline; the radiator 31 and the plate heat exchanger 30 are located inside the room.

The water pipe G2 is also provided with a water pump c29; the water pump c29 is connected to the battery 32 through wires.

The working process of the industrial air conditioner of the present invention is as follows:

(1) Summer processing process:

The fresh air entering the air inlet 1 passes through the primary filter 3, and the primary air and the secondary air exchange heat through the heat exchange tube bundle 7. The air flow channel outside the heat exchange tube bundle 7 is a wet channel, and in the spray water and wet channel A uniform water film is formed on the outer surface of the heat exchange tube. The water film evaporates by absorbing heat, and the temperature is close to the wet bulb temperature of the secondary air. The secondary air enters the wet channel outside the heat exchange tube bundle 7 from the bottom, and directly contacts with water. During the enthalpy humidification process, it is sent to the outside of the surface air-cooled condenser 25 and the inside of the steam turbine exhaust gas for heat exchange through the fan a5, so that the exhaust gas of the steam turbine absorbs the cooling capacity of the secondary air and condenses into water, and then sent to the boiler 37 , while the temperature of the water film outside the heat exchange tube bundle 7 decreases, the primary air passes through the inner side of the heat exchange tube bundle 7 and transfers heat to the water film, the water film transfers the heat to the secondary air, and the treated primary air flows through the heat exchange tube bundle. The dry channel in 7 is pre-cooled, and after being cooled by isohumidity cooling, heat is exchanged by the direct evaporative cooler 13, and the water sprayed by the second water distributor 14 and the third water distributor 12 is sprayed on the filler 17, and the primary air is Through the direct contact between the filler 17 and the spray water, the air loses sensible heat and obtains latent heat. The treatment process is isoenthalpy cooling and humidification.

(2) Transition season processing process:

In the transition season, indirect evaporative coolers and direct evaporative coolers are not used, and a comprehensive flow of ventilation is adopted. The air inlet 1 is opened, and all the fresh air required in the room enters through the air inlet 1, and the secondary air passes through the heat exchange tube bundle 7. Under the suction effect of the secondary air, the secondary air outlet pipe 6 is sent to the surface air-cooled condenser 25 for heat exchange between the outer and inner steam turbine exhaust gas, so that the steam turbine exhaust gas absorbs the cooling energy of the secondary air and condenses into water. , and then sent to the boiler 37; and the primary air is sent to the end device 27 of the user's room by the fan b21 for air conditioning. If the air is dry, the third water distributor 12 is turned on to humidify the primary air to meet the comfort of the human body. Require.

(3) Winter treatment process:

When the unit does not start, the waste heat generated by the thermal power plant 26 enters the plate heat exchanger 30 through the G2 water supply, and then returns to the thermal power plant 26 through the G1 return water, while the radiator 31 passes through the plate heat exchanger 30. heating.

The industrial air conditioner of the present invention adopts the solar power generation panel 28 to supply power to the workshop and equipment, thereby saving electricity costs; the air is cooled in summer and transitional seasons, and the waste heat of the power plant is used for heating in winter to improve the energy saving of the system; the three-dimensional direct evaporative cooling section Distribute water to improve evaporative cooling efficiency; the secondary air of the indirect evaporative cooler enters the surface air-cooled condenser and exchanges heat with the exhaust gas of the steam turbine. The exhaust gas of the steam turbine is cooled by the air in the air-cooled condenser and condensed into water. To achieve low loss, there is a good practical value.

Claims (8)

1. The industrial air conditioner combining the solar technology and the multistage evaporative cooling technology is characterized by comprising an evaporative cooling unit, wherein the evaporative cooling unit is connected with a surface type air-cooling condenser (25) positioned in a thermal power plant (26) through a secondary air supply pipe (24), and the surface type air-cooling condenser (25) is sequentially connected with a boiler (37), a plate type heat exchanger (30) and a radiator (31) through a water pipe network;

the evaporative cooling unit is connected with a room terminal device (27) through an air supply pipe (23);

the evaporative cooling unit is further connected with a photoelectric unit, the photoelectric unit comprises a solar power generation panel (28), and the solar power generation panel (28) is sequentially connected with an inverter (33), a controller (34) and a storage battery (32) through leads.

2. The industrial air conditioner as claimed in claim 1, wherein the evaporative cooling unit comprises a housing (36), an air inlet (1) and an air outlet (22) are arranged on two corresponding sides of the housing (36), and an air inlet pipe (2), a primary filter (3), a horizontal pipe type indirect evaporative cooler (4), a direct evaporative cooler (13), a water baffle (20) and a fan b (21) are sequentially arranged in the air inlet (1) according to the air flowing direction;

a secondary air outlet pipe (6) is arranged at the top of the horizontal pipe type indirect evaporative cooler (4), a secondary air inlet is arranged on the shell corresponding to the bottom of the horizontal pipe type indirect evaporative cooler (4), and the secondary air outlet pipe (6) is communicated with a secondary air supply pipe (24); the air outlet (22) is communicated with an air supply pipe (23).

3. The industrial air conditioner according to claim 2, wherein the horizontal tube indirect evaporative cooler (4) comprises a plurality of heat exchange tube bundles (7) which are horizontally arranged, a first water distributor (9) is arranged at the top of each heat exchange tube bundle (7), a circulating water tank a (8) is arranged at the bottom of each heat exchange tube bundle (7), the first water distributor (9) and the circulating water tank a (8) are connected through a first water replenishing pipe (10), and a water pump a (11) is arranged on the first water replenishing pipe (10);

the storage battery (32) is respectively connected with the water pump a (11) and the fan b (21) through leads.

4. The industrial air conditioner according to claim 2, wherein the direct evaporative cooler (13) comprises a filler (17), a second water distributor (14) is arranged on the top of the filler (17), a circulating water tank b (18) is arranged on the bottom of the filler (17), the second water distributor (14) and the circulating water tank b (18) are connected through a second water replenishing pipe (15), and a water pump b (19) is further arranged on the second water replenishing pipe (15).

5. The industrial air conditioner according to claim 4, wherein the circulating water tank b (18) is further connected with a third water distributor (12) through a third water replenishing pipe (16), the third water distributor (12) is positioned between the horizontal tube type indirect evaporative cooler (4) and the packing (17) and sprays towards the packing (17), and a water pump d (35) is arranged on the third water replenishing pipe (16);

the storage battery (32) is respectively connected with the water pump b (19) and the water pump d (35) through leads.

6. Industrial air conditioner according to claim 2, characterized in that a fan a (5) is arranged in the secondary air outlet duct (6); the fan a (5) is connected with the storage battery (32) through a lead.

7. The industrial air conditioner according to claim 1, wherein the water pipe network comprises water pipes G5 connecting the surface type air cooling condenser (25) and the boiler (37), and the boiler (37) and the plate heat exchanger (30) form a closed pipeline through water pipes G2 and G1; the radiator (31) and the plate heat exchanger (30) form a closed pipeline through a water pipe G3 and a water pipe G4;

the radiator (31) and the plate heat exchanger (30) are located inside a room.

8. The industrial air conditioner as claimed in claim 7, wherein a water pump c (29) is further provided on the water pipe G2; the water pump c (29) is connected with a storage battery (32) through a lead.

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