CN214620029U - Building central air conditioning system based on condensate water recycling - Google Patents
Building central air conditioning system based on condensate water recycling Download PDFInfo
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- CN214620029U CN214620029U CN202120350183.5U CN202120350183U CN214620029U CN 214620029 U CN214620029 U CN 214620029U CN 202120350183 U CN202120350183 U CN 202120350183U CN 214620029 U CN214620029 U CN 214620029U
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Abstract
The utility model relates to an air conditioning technology field refers in particular to building central air conditioning system based on comdenstion water recycle, wherein the system is including vapor compression refrigeration unit, cooling water circulation unit, comdenstion water circulation unit and the control unit, vapor compression refrigeration unit includes the compressor, the condenser, the subcooler, throttling arrangement and evaporimeter, cooling water circulation unit includes the condenser, a temperature sensor, the cooling tower, cooling water pump, the comdenstion water unit includes the condensate water pump, the subcooler, a second temperature sensor, first valve, the check valve, the cooling tower, second valve and water tank. The utility model discloses the cold volume that utilizes the comdenstion water carries out the subcooling to the refrigeration of condenser export, carries out the first time utilization to the comdenstion water that contains cold volume to carry the cooling tower with cold volume by the comdenstion water of once-through utilization, reduced the moisturizing volume of cooling tower and the temperature of cooling water, vapor compression refrigeration cycle refrigerant condensation temperature obtains descending, and the total energy consumption of system reduces by a wide margin.
Description
Technical Field
The utility model relates to an air conditioning technology field refers in particular to building central air conditioning system based on comdenstion water recycle.
Background
With the continuous development of central air conditioning technology, air conditioners have had a profound effect on the lives of people. The central air-conditioning system is the system with the largest energy consumption in the building, and the energy consumption of the central air-conditioning system accounts for about 40% of the energy consumption of the whole building.
The operation of the building central air-conditioning system can generate condensed water, and the temperature of the condensed water is lower, generally between 10 and 15 ℃, and the condensed water contains cold energy. When the condensed water is directly drained away, the refrigerating capacity carried by the condensed water is lost, so that the refrigerating efficiency of the central air conditioner is reduced.
The central air conditioner plays a role, improves the refrigeration efficiency, further reduces the energy consumption of a building central air conditioning system, and has important significance for energy conservation, emission reduction and green development.
SUMMERY OF THE UTILITY MODEL
The invention of the utility model aims to: in order to solve the problems existing in the prior art, the utility model provides a building central air conditioning system based on condensate water recycle.
In order to solve the problems existing in the prior art, the utility model adopts the following technical scheme:
the building central air-conditioning system based on condensate water recycling comprises a steam compression refrigeration unit, a cooling water circulation unit, a condensate water circulation unit and a control unit, wherein the control unit is respectively connected with the steam compression refrigeration unit, the cooling water circulation unit and the condensate water circulation unit;
the vapor compression refrigeration unit comprises a compressor, a condenser, a subcooler, a throttling device and an evaporator which are sequentially connected through pipelines; the cooling water circulation unit is connected with the vapor compression refrigeration unit through the condenser; the condensed water circulating unit is connected with the vapor compression refrigerating unit through the subcooler;
the cooling water circulation unit comprises the condenser, a first temperature sensor, a cooling tower and a cooling water pump which are sequentially connected through a pipeline; the condensed water circulating unit comprises a condensed water pump, the subcooler, a second temperature sensor, a first valve, a one-way valve, the cooling tower, a second valve and a water tank; the condensate pump is sequentially connected with the subcooler and the second temperature sensor; the second temperature sensor is connected with the one-way valve through the first valve, and the outlet of the one-way valve is connected with the first temperature sensor and the cooling tower; the second temperature sensor is also connected with the water tank through the second valve.
As an improvement of the technical scheme of the building central air-conditioning system based on condensate water recycling of the utility model, the adjacent channels of the condenser respectively flow through the refrigerant and the cooling water, and the flow direction of the cooling water is generally opposite to that of the refrigerant; adjacent channels of the subcooler flow refrigerant and condensate, respectively, with the condensate flow direction being generally opposite to the refrigerant flow direction.
As an improvement of the technical scheme of the building central air-conditioning system based on condensate water recycling, the cooling water pump is a variable frequency water pump, and the condensate water pump is a fixed frequency water pump;
the temperature detected by the first temperature sensor is T1The temperature detected by the second temperature sensor is T2The control unit is based on T1And T2And carrying out frequency conversion regulation control on the cooling water pump by the difference value.
As the utility model discloses building central air conditioning system's based on comdenstion water recycle's improvement, the control unit control the compressor throttling arrangement the cooling water pump the condensate pump first valve reaches opening or closing of second valve, according to the compressor throttling arrangement the cooling water pump the condensate pump first valve reaches the state of opening or closing of second valve switches the mixed cooling mode of comdenstion water and the comdenstion water is held and is utilized the mode.
The utility model has the advantages that:
1. the utility model utilizes the cold energy of the condensed water to supercool the refrigeration of the outlet of the condenser, and utilizes the condensed water containing the cold energy for the first time, thereby realizing the one-time promotion of the energy efficiency of the steam compression refrigeration cycle;
2. when the temperature T detected by the second temperature sensor2Less than the temperature T detected by the first temperature sensor1When the first valve is opened and the second valve is closed, the utility model operates the condensate water mixing cooling mode, condensate water with once utilized cold quantity is conveyed to the cooling tower through the condensate water pump along the pipeline, the water supplementing quantity of the cooling tower and the temperature of the cooling water are reduced, simultaneously, the condensing temperature of the refrigerant of the vapor compression refrigeration cycle is reduced, the energy efficiency of the vapor compression refrigeration cycle is improved once again, the energy consumption of the compressor and the cooling water pump is reduced, and the total energy consumption of the system is greatly reduced;
3. the utility model can enter the cooling tower for spraying without being treated by the water softening equipment, the system cost is greatly reduced, and the operation of the building central air-conditioning system is more green and environment-friendly;
4. when the temperature T detected by the second temperature sensor2Temperature T greater than or equal to that detected by the first temperature sensor1When, close first valve, open the second valve, the utility model discloses operation comdenstion water is stored and is utilized the mode, and the comdenstion water is directly arranged to the water tank and is carried out recycle, has realized the saving of water resource.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Description of reference numerals: 1-a compressor; 2-a condenser; 3-a subcooler; 4-a throttling device; 5-an evaporator; 6-cooling water pump; 7-a first temperature sensor; 8-a cooling tower; 9-a condensate pump; 10-a second temperature sensor; 11-a first valve; 12-a one-way valve; 13-a second valve; 14-a water tank.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments.
When the building central air conditioner is used, more condensate water is generated, and the condensate water needs to be better utilized, the utility model provides a building central air conditioning system based on condensate water recycling, as shown in figure 1, which comprises a steam compression refrigeration unit, a cooling water circulation unit, a condensate water circulation unit and a control unit, wherein the control unit is respectively connected with the steam compression refrigeration unit, the cooling water circulation unit and the condensate water circulation unit;
the vapor compression refrigeration unit comprises a compressor 1, a condenser 2, a subcooler 3, a throttling device 4 and an evaporator 5 which are connected in sequence through pipelines; the cooling water circulation unit is connected with the vapor compression refrigeration unit through a condenser 2; the condensed water circulating unit is connected with the vapor compression refrigerating unit through the subcooler 3;
the cooling water circulation unit comprises a condenser 2, a first temperature sensor 7, a cooling tower 8 and a cooling water pump 6 which are connected in sequence through pipelines; the condensed water circulating unit comprises a condensed water pump 9, a subcooler 3, a second temperature sensor 10, a first valve 11, a one-way valve 12, a cooling tower 8, a second valve 13 and a water tank 14; the condensate pump 9 is sequentially connected with the subcooler 3 and the second temperature sensor 10; the second temperature sensor 10 is connected with a one-way valve 12 through a first valve 11, and the outlet of the one-way valve 12 is connected with the first temperature sensor 7 and the cooling tower 8; the second temperature sensor 10 is also connected to a water tank 14 via a second valve 13.
The utility model discloses utilize the cold volume of comdenstion water to carry out the subcooling to the refrigeration of 2 exports of condenser, carry out the first time to the comdenstion water that contains cold volume and utilize, realize that the steam compression refrigeration cycle efficiency once promotes. Then, the condensed water of which the cold quantity is utilized once is conveyed to the cooling tower 8 along a pipeline through the condensed water pump 9, the condensation temperature of the refrigerant of the vapor compression refrigeration cycle is reduced while the water supplementing quantity and the temperature of the cooling water of the cooling tower 8 are reduced, the energy efficiency of the vapor compression refrigeration cycle is improved again, the energy consumption of the compressor 1 and the cooling water pump 6 is reduced, the total energy consumption of the system is greatly reduced, and the green and environment-friendly operation of the building central air-conditioning system is realized.
The temperature detected by the first temperature sensor 7 is T1The temperature detected by the second temperature sensor 10 is T2，T1The cooling water temperature T at the water inlet of the cooling tower 82The temperature of the condensed water at the outlet of the subcooler 3.
When in use, the first temperature sensor 7 and the second temperature sensor 10 respectively detect T1And T2Is transmitted to the control unit, which is based on T1And T2And the control unit controls the opening or closing of the compressor 1, the throttling device 4, the cooling water pump 6, the condensate water pump 9, the first valve 11 and the second valve 13 according to the difference value, and the switching effect of the two modes of the condensate water mixing and cooling mode and the condensate water storage and utilization mode is realized according to the opening or closing states of the compressor 1, the throttling device 4, the cooling water pump 6, the condensate water pump 9, the first valve 11 and the second valve 13.
Preferably, the cooling water pump 6 is a variable frequency water pump, the condensate pump 9 is a fixed frequency water pump, and the control unit controls the cooling water pump according to T1And T2The difference value carries out frequency conversion regulation control on the cooling water pump 6; the control unit is respectively connected with the first valve 11 and the second valve 13, the control unit controls the first valve 11 and the second valve 13 to be opened or closed, and the control unit switches the condensate water mixing and cooling mode and the condensate water storage and utilization mode according to the opening or closing state of the first valve 11 and the second valve 13.
In detail, when the temperature T detected by the second temperature sensor 102Less than the temperature T detected by the first temperature sensor 71When in use, the first valve 11 is opened, the second valve 13 is closed, the utility model discloses the mixed cooling mode of operation comdenstion water carries the comdenstion water that cold volume has been once utilized along the pipeline through the condensate pump 9In the cooling tower 8, the water supplementing amount of the cooling tower 8 and the temperature of cooling water are reduced, meanwhile, the condensation temperature of a steam compression refrigeration cycle refrigerant is reduced, the energy efficiency of the steam compression refrigeration cycle is improved again, the energy consumption of the compressor 1 and the cooling water pump 6 is reduced, and the total energy consumption of the system is greatly reduced.
When the temperature T detected by the second temperature sensor 102Temperature T detected by the first temperature sensor 7 or higher1When, close first valve 11, open second valve 13, the utility model discloses operation comdenstion water is stored and is utilized the mode, and the comdenstion water is directly arranged to water tank 14 and is carried out recycle, has realized the effect of water economy resource.
In the present application, adjacent channels of the condenser 2 flow refrigerant and cooling water, respectively, and the cooling water flow direction is generally opposite to the refrigerant flow direction; adjacent channels of the subcooler 3 pass the refrigerant and the condensate, respectively, and the condensate flow direction is generally opposite to the refrigerant flow direction.
The utility model discloses in, the control unit control compressor 1, throttling arrangement 4, cooling water pump 6, condensate pump 9, opening or closing of first valve 11 and second valve 13, according to the state of opening or closing of compressor 1, throttling arrangement 4, cooling water pump 6, condensate pump 9, first valve 11 and second valve 13, switch two kinds of modes of comdenstion water mixed cooling mode and comdenstion water storage utilization mode.
Condensed water generated by the operation of the central air-conditioning system of the building is supercooled by the supercooler 3 under the action of the condensed water pump 9, and when the temperature T detected by the second temperature sensor 10 is higher than the temperature T2Less than the temperature T detected by the first temperature sensor 71When the system is in a condensed water mixing cooling mode, the condensing temperature of the refrigerant in the condenser 2 is reduced, the energy consumption of the compressor 1 and the cooling water pump 6 is reduced, and the total energy consumption of the system is greatly reduced;
condensed water generated by the operation of the central air-conditioning system of the building is supercooled by the supercooler 3 under the action of the condensed water pump 9, and when the temperature T detected by the second temperature sensor 10 is higher than the temperature T2Temperature T detected by the first temperature sensor 7 or higher1While closing the first valveAnd the door 11 opens the second valve 13, the condensed water storage and utilization mode is operated, and the condensed water is directly discharged to the water tank 14 for recycling.
As shown in table 1, table 1 is a table of the open or close states of the equipment and the valve in different operation modes of the system, and the open or close states of the equipment and the valve in the condensed water mixing and cooling mode and the condensed water storage and utilization mode can be confirmed through table 1.
TABLE 1 does the utility model discloses equipment and valve under the different mode of operation open or closed state table
Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Claims (4)
1. The building central air conditioning system based on condensate water recycling is characterized by comprising a steam compression refrigeration unit, a cooling water circulation unit, a condensate water circulation unit and a control unit, wherein the control unit is respectively connected with the steam compression refrigeration unit, the cooling water circulation unit and the condensate water circulation unit;
the vapor compression refrigeration unit comprises a compressor, a condenser, a subcooler, a throttling device and an evaporator which are sequentially connected through pipelines; the cooling water circulation unit is connected with the vapor compression refrigeration unit through the condenser; the condensed water circulating unit is connected with the vapor compression refrigerating unit through the subcooler;
the cooling water circulation unit comprises the condenser, a first temperature sensor, a cooling tower and a cooling water pump which are sequentially connected through a pipeline; the condensed water circulating unit comprises a condensed water pump, the subcooler, a second temperature sensor, a first valve, a one-way valve, the cooling tower, a second valve and a water tank; the condensate pump is sequentially connected with the subcooler and the second temperature sensor; the second temperature sensor is connected with the one-way valve through the first valve, and the outlet of the one-way valve is connected with the first temperature sensor and the cooling tower; the second temperature sensor is also connected with the water tank through the second valve.
2. The building central air conditioning system based on condensate water recycling of claim 1, wherein the adjacent channels of the condenser are respectively flowed through by refrigerant and cooling water, and the cooling water flow direction is generally opposite to the refrigerant flow direction; adjacent channels of the subcooler flow refrigerant and condensate, respectively, with the condensate flow direction being generally opposite to the refrigerant flow direction.
3. The building central air-conditioning system based on condensate water recycling as claimed in claim 2, wherein the cooling water pump is a variable frequency water pump, and the condensate water pump is a fixed frequency water pump;
the temperature detected by the first temperature sensor is T1The temperature detected by the second temperature sensor is T2The control unit is based on T1And T2And carrying out frequency conversion regulation control on the cooling water pump by the difference value.
4. The building central air conditioning system based on condensate water recycling of claim 3, wherein the control unit controls opening or closing of the compressor, the throttling device, the cooling water pump, the condensate water pump, the first valve and the second valve, and switches between a condensate water mixing and cooling mode and a condensate water storage and utilization mode according to the opening or closing state of the compressor, the throttling device, the cooling water pump, the condensate water pump, the first valve and the second valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120350183.5U CN214620029U (en) | 2021-02-08 | 2021-02-08 | Building central air conditioning system based on condensate water recycling |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120350183.5U CN214620029U (en) | 2021-02-08 | 2021-02-08 | Building central air conditioning system based on condensate water recycling |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112781214A (en) * | 2021-02-08 | 2021-05-11 | 深圳市励科机电科技工程有限公司 | Building central air conditioning system based on condensate water recycling and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112781214A (en) * | 2021-02-08 | 2021-05-11 | 深圳市励科机电科技工程有限公司 | Building central air conditioning system based on condensate water recycling and control method thereof |
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