CN216431972U

CN216431972U - Two-stage precooling evaporative air conditioner system combining with photovoltaic power generation

Info

Publication number: CN216431972U
Application number: CN202122532719.8U
Authority: CN
Inventors: 黄翔; 武茁苗; 陈梦
Original assignee: Xian Polytechnic University
Current assignee: Xian Polytechnic University
Priority date: 2021-10-20
Filing date: 2021-10-20
Publication date: 2022-05-03
Anticipated expiration: 2031-10-20

Abstract

The utility model discloses an evaporative air conditioner of two-stage precooling and air conditioning system that photovoltaic power generation combined together, include evaporative air conditioner and the photovoltaic power generation system that sets up through the electricity connection integration, evaporative air conditioner includes the casing, is provided with primary air respectively on the both sides wall that the casing is relative and advances, the air outlet, has set gradually indirect evaporative cooler according to the wind flow in the casing, the surface cooler, direct evaporative cooler and side EC fan once, be provided with the secondary air outlet on the casing roof that indirect evaporative cooler top corresponds, casing lateral wall sets up the confession return water mouth. The air conditioning system realizes two-stage precooling of air, increases the temperature drop amplitude, and is also provided with a photovoltaic power generation system, so that the power saving rate of the unit is improved. When solar energy exists or does not exist outdoors, the solar energy generator set can be supplied with electric energy, so that the consumption of the electric energy can be greatly reduced, the sustainable development strategy of China is well met, and the solar energy generator set has a good application prospect.

Description

Two-stage precooling evaporative air conditioner system combining with photovoltaic power generation

Technical Field

The utility model belongs to the technical field of air conditioning equipment, a evaporation formula air conditioner and photovoltaic power generation air conditioning system that combines together of two-stage precooling is related to.

Background

Under the current large situation of energy conservation and emission reduction, renewable energy sources are more concerned, the traditional air conditioning system is greatly influenced by outdoor meteorological parameters, the temperature reduction amplitude of the evaporative air conditioner is small, and the energy consumption is high. The solar photovoltaic power generation technology is based on the principle of photovoltaic effect, solar cells are used for directly converting solar energy into electric energy, and the solar photovoltaic power generation technology has the advantages of no exhaustion danger, safety, reliability, no noise and no pollution emission; the evaporative cooling technology utilizes the principle of water evaporation heat absorption refrigeration to work, pushes heat energy exchange between water and air under the environment without providing other heat sources, and transfers apparent heat in the air to water, thereby realizing the reduction of the air temperature. The combination of the two technologies can realize the zero-cost use of the air conditioner, and the air conditioner well accords with the national strategic direction of energy conservation and emission reduction.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an evaporative air conditioner of two-stage precooling and air conditioning system that photovoltaic power generation combined together have solved the problem that current air conditioner temperature drop range is little, the energy consumption is high.

The utility model provides a technical scheme who takes is, an evaporative air conditioner of two-stage precooling and air conditioning system that photovoltaic power generation combined together, include evaporative air conditioner and the photovoltaic power generation system that sets up through the electricity connection integration, evaporative air conditioner includes the casing, be provided with primary air intake and primary air outlet on the relative both sides wall of casing respectively, in the casing, between primary air intake and the primary air outlet, according to the wind flow to having set gradually indirect evaporative cooler, the surface cooler, direct evaporative cooler and the side EC fan once, be provided with the secondary air outlet on the casing roof that indirect evaporative cooler top corresponds, be provided with water supply mouth and return water mouth on the casing lateral wall.

The utility model is also characterized in that,

a fresh air filter is arranged between the primary air inlet and the indirect evaporative cooler.

And a secondary side EC fan is arranged between the indirect evaporative cooler and the secondary air outlet.

A water baffle is arranged between the direct evaporative cooler and the primary side EC fan.

The indirect evaporative cooler adopts a horizontal tube indirect evaporative cooler.

The horizontal tube type indirect evaporative cooling device comprises a horizontal tube type indirect evaporative cooling heat exchange core body, a water distributor b and a circulating water tank are respectively arranged on the upper side and the lower side of the horizontal tube type indirect evaporative cooling heat exchange core body, the circulating water tank is communicated with the water distributor b through a pipeline, and a circulating water pump is arranged on the pipeline which is communicated with the circulating water tank and the water distributor b.

The direct evaporative cooler comprises a filler, a water distributor a and a water collecting tank, wherein the water distributor a and the water collecting tank are respectively arranged on the upper part and the lower part of the filler, the water collecting tank is communicated with the surface air cooler through a water return pipe, a water pump is arranged on the water return pipe, the water distributor a extends out of a water supply port through a water supply pipe, and an electronic water treatment instrument and a flow regulating valve are sequentially arranged on the water supply pipe.

A water homogenizing device is arranged between the filler and the water distributor a.

The filler is paper fiber filler.

The photovoltaic power generation system comprises a solar cell array, a solar controller, an inverter and a storage battery which are sequentially connected, wherein the inverter and the storage battery are respectively and electrically connected with the evaporative air conditioner.

The utility model has the advantages that,

(1) outdoor air is cooled through indirect evaporative cooling primary precooling, surface cooler secondary precooling and direct evaporative cooler, and the process of first twice equal humidity cooling and then once enthalpy increasing cooling is provided, and compared with the traditional evaporative air cooler, the temperature reduction range is larger.

(2) The air conditioning system integrates the photovoltaic power generation system, so that compared with the traditional evaporative air conditioner, the air conditioning system greatly saves energy.

(3) The cold water prepared by the direct evaporative cooler is introduced into the surface cooler, so that the surface cooler does not need to be connected with an external cold source, and the integration level and the flexibility of the unit are greatly improved.

(4) The air conditioning system can be operated without interruption with zero energy consumption no matter whether the outdoor weather has sunlight or no sunlight.

Drawings

Fig. 1 is a schematic structural diagram of an air conditioning system of the present invention;

fig. 2 is a schematic structural diagram of a photovoltaic power generation system in the air conditioning system of the present invention.

In the figure, 1 is a solar cell array, 2 is a primary air inlet, 3 is a fresh air filter, 4 is a water return port, 5 is a water supply port, 6 is an electronic water treatment instrument, 7 is a flow regulating valve, 8 is a surface cooler, 9 is a unit power supply port, 10 is a power supply wire, 11 is a photovoltaic power generation system, 12 is a water pump, 13 is a solar controller, 14 is a water distributor a, 15 is a water homogenizer, 16 is a filler, 17 is a water collecting tank, 18 is a circulating water tank, 19 is a water baffle, 20 is a primary side EC fan, 21 is a primary air outlet, 22 is an inverter, 23 is a shell, 24 is a storage battery, 25 is a secondary air outlet, 26 is a secondary side EC fan, 27 is a water distributor b, 28 is a horizontal pipe type indirect evaporative cooling heat exchange core, and 29 is a circulating water pump.

Detailed Description

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

The structure of the air conditioning system of the utility model is as shown in figure 1, comprising a photovoltaic power generation system 11 and a two-stage precooling evaporation type air conditioner.

The evaporative air cooler comprises a casing 23, a primary air inlet 2 and a primary air outlet 21 are respectively arranged on two opposite side walls of the casing 23, and a fresh air filter 3, an indirect evaporative cooler, a surface cooler 8 and a direct evaporative cooler are sequentially arranged in the casing 23 and between the primary air inlet 2 and the primary air outlet 21 according to the air flow direction. A secondary air outlet 25 is arranged on the top wall of the casing 23 corresponding to the upper part of the indirect evaporative cooler, and a water supply port 5 and a water return port 4 are arranged on the side wall of the casing 23. A water deflector 19 is provided between the direct evaporative cooler and the primary side EC fan 20 to prevent water droplets from being sucked into the fan. The air conditioning system adopts a two-stage precooling and direct evaporative cooling mode, and the temperature drop range is large. The primary side EC fan 20 and the secondary side EC fan 26 both adopt suction type EC fans, so that negative pressure is formed in the flow channel, which is beneficial to evaporative cooling of water and is also beneficial to adhesion of water films on the surfaces of fillers.

The indirect evaporative cooler adopts a horizontal tube indirect evaporative cooler which comprises a horizontal tube indirect evaporative cooling heat exchange core 28, a water distributor b27 and a circulating water tank 18 are respectively arranged above and below the horizontal tube indirect evaporative cooling heat exchange core 28, the circulating water tank 18 is communicated with the water distributor b27 through a pipeline, and a circulating water pump 29 is arranged on the pipeline which is communicated with the circulating water tank 18 and the water distributor b 27. And a horizontal tube type indirect evaporative cooling heat exchange core body 28 is adopted, so that the flow channel is wide and is not easy to block.

The direct evaporative cooler comprises a filler 16, a water distributor a14 and a water collecting tank 17 which are respectively arranged on the upper part and the lower part of the filler 16, the water collecting tank 17 is communicated with a surface air cooler 8 through a water return pipe, a water pump 12 is arranged on the water return pipe, the water distributor a14 is communicated with a water supply port 5 through a water supply pipe, an electronic water treatment instrument 6 and a flow regulating valve 7 are sequentially arranged on the water supply pipe, the filler 16 is made of paper fiber filler, a water uniformizing device 15 is arranged between the filler 16 and the water distributor a14, the water uniformizing device 15 is additionally arranged above the filler 16, uniform adhesion of a water film is facilitated, and the evaporative cooling efficiency is improved. The direct evaporative cooler not only can cool air, but also can prepare cold water, and the prepared cold water is introduced into the surface air cooler 8 to pre-cool the air, so that the cold energy is fully utilized.

As shown in fig. 2: the photovoltaic power generation system 11 includes a solar cell array 1, a solar controller 13, an inverter 22, and a storage battery 24, which are connected in this order. The inverter 22 and the battery 24 are connected to the unit power supply port 9 of the evaporative type air conditioner motor through power supply wires 10, respectively. The integrated photovoltaic power generation system 11 can enable the air conditioning unit to run with zero energy consumption, and the photovoltaic power generation system 11 is provided with the storage battery 24, so that the requirement of continuous use can be met.

The utility model discloses air conditioning system's working process does:

primary air enters the unit from a primary air inlet 2, is divided into two air flows after passing through a fresh air filter 3, one part of the air flow serves as secondary air of the horizontal tube type indirect evaporative cooler, and the other part of the air flow passes through a primary channel in the horizontal tube type indirect evaporative cooling heat exchange core 28. After the circulating water pump 29 pumps water out of the circulating water tank 18 and passes through the water distributor b27, the water film is attached to the outer side of the horizontal tube type indirect evaporative cooling heat exchange core 28, and the excess water continuously flows back to the circulating water tank 18 to complete a cycle. The secondary air serving as a horizontal tube type indirect evaporative cooler is subjected to heat and moisture exchange with a water film attached to the outer surface of the horizontal tube type indirect evaporative cooling heat exchange core 28, the secondary air is cooled and transfers the cold energy to the primary air in the tube, and finally the secondary air is discharged to the outside by the secondary side EC fan 26 through the secondary air outlet 25. The air in the primary channel in the heat exchange core 28 is cooled by horizontal tube type indirect evaporation to obtain the cold quantity of the secondary air, thereby realizing primary precooling (equal humidity cooling).

Cold water or normal temperature water provided outside the unit enters the pipeline in the unit through the water supply port 4, the water quality is treated at the electronic water treatment instrument 6, and then the water flows through the flow regulating valve 7, and the regulating valve can perform corresponding regulation according to the size of cooling capacity. The treated water is uniformly sprayed on the filler 16 through the water distributor a14 by the water homogenizer 15, and performs heat and humidity exchange with the primary air cooled by the surface air cooler 8, so that the primary air discharged from the filler 16 is cooled again (enthalpy-increasing cooling), and finally is delivered to an area needing cold air through the primary air outlet 21 under the action of the primary side EC fan 20. At the same time, the water flowing down through the filler is cooled and flows into the water collecting tank 17. The cooled water is then conveyed into the surface air cooler 8 under the action of the water pump 12, primary air after primary precooling through indirect evaporative cooling is subjected to secondary precooling (equal-humidity cooling) outside the surface air cooler 8, the cold water and the air undergo sensible heat exchange, and then the water is discharged out of the unit through the water return port 4.

The primary air of the unit sequentially passes through the indirect evaporative cooler, the surface cooler and the direct evaporative cooler, and is a process of first equal-humidity cooling, then equal-humidity cooling and finally enthalpy-increasing cooling, and the cooling effect is very obvious. The energy consumption sources of the unit are mainly a secondary side EC fan 26, a primary side EC fan 20, a circulating water pump 29, a water pump 12 and the like, and the energy consumption is provided by a photovoltaic power generation system 11.

In the weather with better outdoor meteorological parameters and rich solar energy, the outdoor solar energy can be absorbed by the solar cell array 1, the solar energy is converted into electric energy, and then the electric energy enters the solar controller 13 through the transmission of the electric wire, so that the control and the distribution of the electric energy are ensured. Part of the electric energy from the solar controller 13 is directly transmitted to the unit power supply port 9 through the power supply wire 10 after passing through the inverter 22, so as to supply power to the unit. The other part of the electric energy is connected with the storage battery 24 through a lead wire to charge the storage battery 24 for the time-to-time needs.

In the absence of the sun outdoors, the solar array 1 stops working, and the electric energy stored in the battery 24 is used, and the part of the electric energy flows out and then the dc electric energy (the battery) is converted into ac electric energy (generally 220v50HZ sine or square wave) at the inverter 22. And finally, the power is transmitted to a power supply port 9 of the unit through a power supply wire 10 to supply power to the unit.

The utility model discloses an air conditioning system, at the abundant period of solar energy, photovoltaic power generation system can change solar energy into the electric energy, and the electric energy of partly directly gives the power supply of evaporation formula air conditioner, and another part electric energy is stored in the battery. In the time period without the sun, the storage battery can independently supply power to the evaporative air conditioner, the system can realize the uninterrupted and zero-power-consumption work of the evaporative air conditioner, and meanwhile, the system is a system which fully utilizes a natural cold source.

Claims

1. An air conditioning system combining a two-stage precooling evaporative air conditioner and photovoltaic power generation is characterized by comprising an evaporative air conditioner and a photovoltaic power generation system (11) which are integrally arranged through electric connection, the evaporative air cooler comprises a machine shell (23), a primary air inlet (2) and a primary air outlet (21) are respectively arranged on two opposite side walls of the machine shell (23), an indirect evaporative cooler, a surface cooler (8), a direct evaporative cooler and a primary side EC fan (20) are sequentially arranged in the shell of the shell (23) and between the primary air inlet (2) and the primary air outlet (21) according to the air flow direction, and a secondary air outlet (25) is arranged on the top wall of the machine shell (23) corresponding to the upper part of the indirect evaporative cooler, and a water supply port (5) and a water return port (4) are arranged on the side wall of the machine shell (23).

2. Air conditioning system according to claim 1, characterized in that a fresh air filter (3) is arranged between the primary air intake (2) and the indirect evaporative cooler.

3. Air conditioning system according to claim 1, characterized in that a secondary side EC fan (26) is provided between the indirect evaporative cooler and the secondary air outlet (25).

4. Air conditioning system according to claim 1, characterized in that a water baffle (19) is arranged between the direct evaporative cooler and the primary side EC fan (20).

5. The air conditioning system as claimed in claim 1, 2, 3 or 4, wherein the indirect evaporative cooler is a horizontal tube indirect evaporative cooler.

6. The air conditioning system as claimed in claim 5, wherein the horizontal tube indirect evaporative cooling unit comprises a horizontal tube indirect evaporative cooling heat exchange core (28), a water distributor b (27) and a circulating water tank (18) are respectively arranged above and below the horizontal tube indirect evaporative cooling heat exchange core (28), the circulating water tank (18) is communicated with the water distributor b (27) through a pipeline, and a circulating water pump (29) is arranged on the pipeline communicating the circulating water tank (18) with the water distributor b (27).

7. The air conditioning system according to claim 1, 2, 3 or 4, wherein the direct evaporative cooler comprises a filler (16), a water distributor a (14) and a water collecting tank (17) which are respectively arranged at the upper part and the lower part of the filler (16), the water collecting tank (17) is communicated with the surface cooler (8) through a water return pipe, a water pump (12) is arranged on the water return pipe, the water distributor a (14) extends out of the water supply port (5) through a water supply pipe, and an electronic water treatment device (6) and a flow regulating valve (7) are sequentially arranged on the water supply pipe.

8. Air conditioning system according to claim 7, characterized in that a water homogenizer (15) is arranged between the filler (16) and the water distributor a (14).

9. Air conditioning system according to claim 7 or 8, characterized in that the filler (16) is a paper fibre filler.

10. The air conditioning system according to claim 1, 2, 3 or 4, wherein the photovoltaic power generation system (11) comprises a solar cell array (1), a solar controller (13), an inverter (22) and a storage battery (24) which are connected in sequence, and the inverter (22) and the storage battery (24) are respectively electrically connected with the evaporative cooler.