CN103743012B - The Evaporative Cooling Air-conditioning System without the need to water tank cold-storage of wind light mutual complementing power generation - Google Patents

Abstract

The evaporative cooling air-conditioning system for wind-solar hybrid power generation without water tank cold storage disclosed by the present invention is composed of evaporative cooling cold air/chiller units, a wind-solar hybrid power generation system installed on the external roof, and a water curtain wall structure used on the side wall of the house. The evaporative cooling cold air/cold water The unit is connected to the indoor end of the house through the water supply and return pipes respectively. There is an air outlet in the house, and the evaporative cooling cold air/chiller unit is connected to the air outlet through the air pipe. The evaporative cooling air-conditioning system of the present invention combines evaporative cooling air-conditioning technology, wind-solar hybrid power generation technology, cold storage technology, and water curtain wall technology, uses the peak-valley electricity price difference between night and daytime to produce cold air and cold water, and realizes ventilation and cold storage at night The purpose is to be an environment-friendly, energy-saving and economical air-conditioning system.

Description

Evaporative cooling air conditioning system without water tank storage for wind and solar hybrid power generation

technical field

The invention belongs to the technical field of air-conditioning equipment, and specifically relates to an evaporative cooling air-conditioning system including an evaporative cooling cold air/chiller unit, a wind-solar hybrid power generation system, an evaporative cooling coil embedded with a phase-change cold storage material, a water curtain wall, and an integrated indoor terminal.

Background technique

In recent years, the proportion of my country's building energy consumption to the total energy consumption has increased. Since most of the air conditioners use traditional mechanical refrigeration, the four major components of the system need to consume a lot of electricity, resulting in "power cuts" in summer in cities. " and other phenomena, so the energy saving of air conditioners is imminent. Evaporative cooling air-conditioning technology uses natural energy "dry air" energy, and uses the difference between air dry bulb temperature and dew point temperature as the driving force to reduce the temperature of air and water. The evaporative cooling cold air/chiller unit can produce cold air and cold water at the same time, which not only meets the needs of indoor fresh air, but also provides high-temperature cold water for the indoor end, which can realize the water-air system and reduce the layout of excessive indoor air ducts. Conventional water-cooled storage air conditioners make use of the peak-valley electricity price difference of the power grid. At night, chillers are used to produce cold water to store cold in the pool. During the day, the pool releases cooling capacity to ensure the normal operation of the unit during the peak load period. It has the advantages of small investment, reliable operation, Good refrigeration effect and high economic benefits. However, it needs to occupy a certain place to build a reservoir, which will inevitably take a certain space. Today, phase change cold storage technology is developing rapidly, and phase change materials can already absorb a certain amount of cold water at high temperature, store it for a certain period of time, and release the cold amount when needed. Modern buildings mostly use glass curtain walls, which are beautiful in appearance, but the curtain walls can not only absorb too much solar radiation energy, but also increase the problem of glare outside.

Contents of the invention

The purpose of the present invention is to provide an evaporative cooling air-conditioning system for wind-solar hybrid power generation without water tank storage, which combines evaporative cooling air-conditioning technology, water storage technology, wind-solar hybrid power generation technology and water curtain wall technology to make full use of natural energy and reduce environmental pollution ,Energy saving.

The technical solution adopted in the present invention is an evaporative cooling air-conditioning system for wind-solar hybrid power generation that does not require a water tank for cold storage. The system consists of evaporative cooling cold air/chiller units, a wind-solar hybrid power generation system installed on the external roof, and a water curtain wall structure used on the side wall of the house. Composition, the evaporative cooling cold air/chiller unit is connected to the indoor end of the house through the water supply and return pipes respectively, the house is provided with an air outlet, and the evaporative cooling cold air/chiller unit is connected to the air outlet through the air pipe.

The present invention is also characterized in that,

The structure of the evaporative cooling cold air/chiller unit is as follows: it includes two channels arranged side by side in the unit,

In one channel: there is a water collection tank a at the bottom, and the water collection tank a is connected with the outside of the unit shell with a water supply valve a and a drain valve a, and the upper part of the water collection tank a is provided with an indirect evaporative cooling heat exchanger and a filler a in sequence from bottom to top , water distributor a, water retaining plate a and exhaust fan a, the water collection tank a is connected to the water distributor a through the pipeline and the circulating water pump a, and a fresh air outlet is provided on the unit shell wall corresponding to the indirect evaporative cooling heat exchanger , a filter is set between the fresh air outlet and the indirect evaporative cooling heat exchanger;

In the other channel: there is a water collection tank b at the bottom, and the water collection tank b is connected with the outside of the unit shell with a water supply valve b and a sewage valve b. The upper part of the water collection tank b is provided with evaporative cooling coils, fillers b, The water distributor b, the water retaining plate b and the exhaust fan b, the water collecting tank b communicate with the water distributor b through the pipeline and the circulating water pump b, and an air supply port is arranged on the shell wall between the water collecting tank b and the evaporative cooling coil, A blower fan and a water baffle c are arranged in the air supply port;

The evaporative cooling coil is connected to the indoor end of the house through the water supply and return pipes respectively, and the air supply port is connected with the air port through the air pipe.

The indirect evaporative cooling heat exchanger adopts plate-fin type, tube type or dew point type indirect evaporative cooling heat exchanger.

Filler a and filler b are made of paper, metal, porous ceramic or PVC.

The exhaust fan a, the exhaust fan b and the blower adopt frequency conversion fans.

Circulating water pump a and circulating water pump b adopt frequency conversion.

The evaporative cooling coil is embedded with phase change thermal storage material.

The structure of the water curtain wall is composed of the inner wall of the glass curtain wall and the outer wall of the glass curtain wall. A cavity is formed between the inner and outer walls. The bottom of the cavity is provided with a water collection tank c. The top of the cavity is close to the outer wall of the glass curtain wall A water distribution pipe is provided, and a plurality of water distribution holes are evenly spaced on the water distribution pipe.

The structure of the wind-solar hybrid power generation system includes wind generators, the wind generators are respectively connected to photovoltaic power generation panels and wind power complementary controllers, and the photovoltaic power generation panels are connected to wind power complementary controllers, batteries, inverters and electrical equipment in turn.

The indoor end is a dry fan coil unit or a capillary radiant tube.

The evaporative cooling air-conditioning system of the present invention has the following advantages:

(1) The closed cooling coil in the evaporative cooling air-conditioning system of the present invention is embedded with phase-change cold storage materials, which can realize the integration of cold water production and water cold storage, without additional water storage tanks/pools, and has a simple structure and space-saving features.

(2) The evaporative cooling air-conditioning system of the present invention utilizes the peak-to-valley price difference to produce cold water, and stores the cooling capacity in the phase-change cold storage material embedded in the closed evaporative cooling coil, releasing the cooling capacity during the day, with rational energy utilization , energy-saving and economical features.

(3) The evaporative cooling air-conditioning system of the present invention utilizes the peak-to-valley difference of electricity prices to produce cold air, which can realize ventilation at night to take away the heat retained in the room and reduce the air-conditioning load during the day, thereby achieving the purpose of energy saving.

(4) The cold water produced by the evaporative cooling air-conditioning system of the present invention is first passed into the end of the room to absorb the heat of the indoor return air, and then passed into the water distributor of the water curtain wall, which increases the temperature difference between the return water and the supply water, and reduces the flow rate of the supply water.

(5) The water curtain wall in the evaporative cooling air-conditioning system of the present invention blocks the heat transmitted from the outdoor solar radiation to the room, and also reduces the glare of the glass curtain wall to the room, which is not only beautiful, but also energy-saving.

(6) The water distributor in the water curtain wall of the evaporative cooling air-conditioning system of the present invention is evenly perforated, and the water distribution holes are attached to the outer wall of the glass curtain wall, so that the water falls along the wall, the sunshade effect is obvious, and the noise is reduced.

(7) The present invention utilizes the wind-solar hybrid power generation system to provide power for the water pumps and fans of the evaporative cooling air-conditioning unit, and at the same time store the excess electric energy in the battery, so that wind power and photovoltaic power generation can mutually assist each other , to ensure continuous use under adverse weather conditions, and the system runs stably.

Description of drawings

Fig. 1 is the structural representation of evaporative cooling air-conditioning system of the present invention;

Fig. 2 is the structural representation of the evaporative cooling cold air/chiller unit in the evaporative cooling air-conditioning system of the present invention;

Fig. 3 is the structural representation of water curtain wall in the evaporative cooling air-conditioning system of the present invention;

Fig. 4 is a schematic cross-sectional view of an evaporative cooling coil embedded with a phase change cold storage material in the evaporative cooling air-conditioning system of the present invention;

Fig. 5 is a schematic structural diagram of a wind-solar hybrid power generation system in the evaporative cooling air-conditioning system of the present invention.

In the figure, A. Evaporative cooling cold air/chiller unit, B. Wind-solar hybrid power generation system, C. Indoor terminal, D. Air outlet, E. Water curtain wall, 1. Filter, 2. Indirect evaporative cooling heat exchanger, 3. Filling a, 4. Water distributor a, 5. Water baffle a, 6. Exhaust fan a, 7. Exhaust fan b, 8. Water baffle b, 9. Water distributor b, 10. Filling b, 11. Evaporation Cooling coil, 12. Blower fan, 13. Water baffle c, 14. Water supply valve a, 15. Water collection tank a, 16. Circulating water pump a, 17. Sewage valve a, 18. Water collection tank b, 19. Circulating water pump b , 20. Water supply valve b, 21. Sewage valve b, 22. Water distribution pipe, 23. Water distribution hole, 24. Glass curtain wall inner wall, 25. Glass curtain wall outer wall, 26. Water collection tank c, 27. Electrical equipment, 28. Phase change cold storage materials, 29. Wind generators, 30. Photovoltaic power generation panels, 31. Wind complementary controllers, 32. Storage batteries, 33. Inverters.

detailed description

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

The evaporative cooling air-conditioning system for wind-solar hybrid power generation of the present invention that does not require a water tank for cold storage has a structure as shown in Figure 1. It consists of an evaporative cooling cold air/chiller unit A, a wind-solar hybrid power generation system B installed on the external roof, and a water curtain wall E used on the side wall of the house. Structural composition, the evaporative cooling air/chiller unit A is connected to the indoor terminal C in the house through the water supply and return pipes respectively, the air outlet D is set in the house, and the evaporative cooling air/chiller A is connected to the air outlet D through the air pipe.

The structure of the evaporative cooling cold air/chiller unit A is as follows: it includes two channels arranged side by side in the unit, and its structure is shown in Figure 2.

In one channel: a water collection tank a15 is installed at the bottom, and the water collection tank a15 is connected with the outside of the unit shell to make up the water supply valve a14 and the sewage valve a17. The upper part of the water collection tank a15 is provided with an indirect evaporative cooling heat exchanger 2, packing a3, The water distributor a4, the water retaining plate a5 and the exhaust fan a6, the water collecting tank a15 are connected to the water distributor a4 through the pipeline and the circulating water pump a16, and the unit housing wall corresponding to the indirect evaporative cooling heat exchanger 2 is provided with a fresh air outlet , a filter 1 is set between the fresh air outlet and the indirect evaporative cooling heat exchanger 2 .

In the other channel: there is a water collection tank b18 at the bottom, and the water collection tank b18 is connected with the outside of the unit casing with a water supply valve b20 and a sewage valve b21. The upper part of the water collection tank b18 is provided with evaporative cooling coil 11 and filler b10 in sequence from bottom to top. , water distributor b9, water retaining plate b8 and exhaust fan b7, the water collecting tank b18 communicates with the water distributor b9 through the pipeline and the circulating water pump b19, and the casing wall between the water collecting tank b18 and the evaporative cooling coil 11 is provided with a blower The air outlet is provided with a blower fan 12 and a water baffle c13 in the air outlet.

The evaporative cooling coil 11 is connected to the indoor terminal C in the house through the water supply and return water pipes respectively, and the air supply port is connected with the air port D through the air pipe.

The indirect evaporative cooling heat exchanger 2 adopts plate-fin, tube or dew point indirect evaporative cooling heat exchangers.

Filler a3 and filler b10 are made of paper, metal, porous ceramics, PVC and other materials.

Exhaust fan a6, exhaust fan b7 and blower 12 adopt frequency conversion fan, circulating water pump a16 and circulating water pump b19 adopt frequency conversion type, and realize energy saving through control.

The evaporative cooling coil 11 is embedded with a phase-change cold storage material 28 , as shown in FIG. 4 .

The structure of the water curtain wall E is composed of the glass curtain wall inner wall 24 and the glass curtain wall outer wall 25 which are spaced apart. A cavity is formed between the inner and outer walls. As shown in Figure 3, the bottom of the cavity is provided with a water collection box c26. A water distribution pipe 22 is arranged on the top of the cavity close to the outer wall 25 of the glass curtain wall, and a plurality of water distribution holes 23 are evenly spaced on the water distribution pipe 22 .

The structure of the wind-solar hybrid power generation system B is shown in Figure 5, including a wind power generator 29, the wind power generator 29 is connected to a photovoltaic power generation panel 30 and a wind power complementary controller 31 respectively, and the photovoltaic power generation board 30 is connected to the wind power complementary controller 31 and the storage battery in turn. 32. The inverter 33 is connected to the electrical equipment 27.

Wind-solar complementary controller 31, the main function is to keep the solar and wind power generation system near the highest power point of the power generation system to obtain the maximum power; the main function of the inverter 33 is to convert the direct current of the battery into alternating current, which can be divided into self-excited type oscillation inverter and other excitation type oscillation inverter; the storage battery 32 is a component for converting solar energy and wind energy into direct current energy storage.

Indoor terminal C can adopt dry fan coil unit and capillary radiant tube, etc. The dry-type fan coil is fed with high-temperature cold water, and there is no need to install a condensate pipe to prevent the leakage of condensed water and the growth of bacteria; the capillary radiant tube is fed with the prepared high-temperature cold water to absorb indoor waste heat.

Air port D can send a certain amount of fresh air into the room.

The working process of the air conditioning system of the present invention can be divided into two modes:

Cooling at night

Turn on the evaporative cooling cold air/chiller unit A, and use the peak-valley electricity price difference to produce cold air and cold water. The evaporative cooling coil 11 is embedded with a phase-change cold storage material 28 to store the produced cooling capacity. The cold air produced is passed into the room to realize ventilation at night to reduce the indoor load during the day.

cool off during the day

The cold storage material 28 begins to release cold energy, and the high-temperature cold water produced is passed into the end of the room to absorb the residual heat in the room, and then passed into the water distribution pipe 22 in the water curtain wall E, and the high-temperature cold water flows down evenly along the outer wall of the curtain wall. The wall forms a layer of water curtain, which can reduce the transmission of solar radiation energy to the interior, and also reduce the generation of outdoor glare. The water that flows down falls into the water tank set below and returns to the unit.

During the day, the evaporative cooling air/chiller unit can be turned on to make up for the lack of cooling capacity.

The evaporative cooling air-conditioning system of the present invention utilizes natural wind energy and light energy to generate electricity, and provides the energy consumption required for the operation of the evaporative cooling air-conditioning system. The evaporative cooling cold air/chiller unit uses the difference in peak and valley electricity prices to produce cold air and cold water at night. Due to the evaporative cooling coil embedded with phase change cold storage materials, the integration of cold water production and cold storage is realized, and the evaporative cooling can be directly The cold water produced is stored and released during the day to provide high-temperature cold water for the water distribution pipes at the end of the room and the water curtain wall; the cold air produced can be ventilated to the room at night, reducing the load on the room during the day.

Claims (2)

1. An evaporative cooling air-conditioning system for wind-solar hybrid power generation that does not require water tank storage, which is characterized in that the system consists of evaporative cooling cold air/chiller unit (A), wind-solar hybrid power generation system (B) installed on the external roof, and the side wall of the house. Water curtain wall (E) structure, the evaporative cooling cold air/chiller unit (A) is connected to the indoor terminal (C) in the house through the water supply and return pipes respectively, and the air outlet (D) is arranged in the house, and the described The evaporative cooling cold air/chiller unit (A) communicates with the air outlet (D) through the air duct; The structure of the evaporative cooling cold air/chiller unit (A) is as follows: it includes two channels arranged side by side in the unit, and in one channel: a water collection box a (15) is arranged at the bottom, and the water collection box a (15) is connected to the outside of the unit shell The water supply valve a (14) and the drain valve a (17) are connected, and the upper part of the water collection tank a (15) is provided with an indirect evaporative cooling heat exchanger (2), packing a (3), and water distributor in sequence from bottom to top. a(4), water retaining plate a(5) and exhaust fan a(6), the water collection tank a(15) communicates with the water distributor a(4) through pipelines and circulating water pump a(16), and communicates with the water distributor a(4) A fresh air outlet is provided on the unit shell wall corresponding to the indirect evaporative cooling heat exchanger (2), and a filter (1) is arranged between the fresh air outlet and the indirect evaporative cooling heat exchanger (2); in the other channel: There is a water collection tank b(18) at the bottom, and the water collection tank b(18) communicates with the outside of the unit casing with a water supply valve b(20) and a sewage valve b(21). The upper part of the water collection tank b(18) is sequentially An evaporative cooling coil (11), filler b (10), water distributor b (9), water baffle b (8) and exhaust fan b (7) are provided, and the water collection tank b (18) passes through the pipeline, The circulating water pump b (19) communicates with the water distributor b (9), and an air supply port is provided on the housing wall between the water collection tank b (18) and the evaporative cooling coil (11), and the air supply port is provided with Blower fan (12) and water retaining plate c (13); The evaporative cooling coil (11) is connected to the indoor terminal (C) in the house through the water supply and return pipes respectively, and the air supply port is connected to the air port (D) through the air pipe; The indirect evaporative cooling heat exchanger (2) adopts a plate-fin type, tube type or dew point type indirect evaporative cooling heat exchanger; The filler a (3) and filler b (10) are made of paper, metal, porous ceramic or PVC; The exhaust fan a (6), exhaust fan b (7) and blower fan (12) adopt frequency conversion fans; the circulating water pump a (16) and circulating water pump b (19) adopt frequency conversion type. 2. The evaporative cooling air-conditioning system according to claim 1, characterized in that, the evaporative cooling coil (11) is embedded with a phase change cold storage material (28); The water curtain wall (E) structure is composed of glass curtain wall inner wall (24) and glass curtain wall outer wall (25) which are spaced apart, a cavity is formed between the inner and outer walls, and the bottom of the cavity is provided with a water collection tank c (26), the top of the cavity is provided with a water distribution pipe (22) near the glass curtain wall outer wall (25), and a plurality of water distribution holes (23) are evenly spaced on the water distribution pipe (22); The structure of the wind-solar hybrid power generation system (B) includes a wind power generator (29), the wind power generator (29) is connected with a photovoltaic power generation panel (30) and a wind power complementary controller (31) respectively, and the photovoltaic power generation board (30) Connect with wind power complementary controller (31), storage battery (32), inverter (33) and electrical equipment (27) in sequence; The indoor end (C) is a dry fan coil unit or a capillary radiant tube.