Patent Application
20200292184
This application is based on and claims the benefit of priority from Chinese Patent Application No. CN 201910180921.3 filed on Mar. 11, 2019, the contents of which are incorporated by reference herein in their entirety.
The disclosure relates to the field of air conditioning, and particularly, to a water-cooled air conditioning system.
At present, for the traditional air-cooled air conditioning system, a refrigerant is evaporated and cooled in the evaporator, then the low-temperature and low-pressure gaseous refrigerant is compressed into the high-temperature and high-pressure gaseous refrigerant by the compressor, and then the high-temperature and high-pressure gaseous refrigerant is cooled into the high-temperature and high-pressure liquid refrigerant by passing through the condenser, which passes through an expansion valve causing reduction both in pressure and temperature so as to change into the low-temperature and low-pressure liquid refrigerant, and then enters the evaporator to start a next cycle. In the construction industry, the demand for air conditioning is particularly strong. According to statistics, China's building energy consumption accounts for about 35% of the national energy consumption, and air conditioning energy consumption accounts for 50% to 60% of the building energy consumption, which is extremely high.
The disclosure is intended to solve one of the technical problems above in related art to some extent. Therefore, the disclosure provides a water-cooled air conditioning system reducing energy consumption.
According to the disclosure, there is provided a water-cooled air conditioning system, comprising: an evaporator,
a compressor communicated with the evaporator through a first feed pipe,
a condenser,
an expansion valve communicated with the condenser through a second feed pipe and communicated with the evaporator through a third feed pipe,
a cooling well,
a cooling loop arranged between, and respectively communicated with, the compressor and the condenser, and the cooling loop comprising:
a discharge section communicated with the compressor, the discharge section being provided with a first valve;
a feed section communicated with the condenser, the feed section being provided with a second valve; and
a cooling section extending into the cooling well;
a recovery well, and
a recovery pipe arranged between the cooling well and the recovery well, the recovery pipe being provided with a recovery pump.
In some embodiments, the water-cooled air conditioning system further comprises a fan arranged at any side of the evaporator, wherein the condenser is communicated with the compressor through a fourth feed pipe, so that the evaporator, the compressor, the condenser and the expansion valve form a refrigerant loop for a refrigerant to flow, the cooling loop is communicated with the refrigerant loop through the discharge section and the feed section.
In some embodiments, a third valve is arranged between the compressor and the evaporator.
In some embodiments, one end of the recovery pipe inserted into the cooling well is arranged on a surface layer of the cooling well.
In some embodiments, the recovery pipe extends 20 m below a water surface where the cooling well is located.
In some embodiments, the cooling section extends into a surface layer of the cooling well.
The disclosure has the beneficial effects that: before entering the condenser, a refrigerant is cooled by well water to reduce the temperature of the refrigerant, and then the refrigerant enters the condenser for condensation, thus eliminating a fan of the condenser and reducing an energy consumption of the whole air conditioning system.
The disclosure is further described hereinafter with reference to the drawing according to an embodiment.
With reference to
A refrigerant is evaporated and cooled in the evaporator 200 during use, and then the low-temperature and low-pressure gaseous refrigerant is compressed into a high-temperature and high-pressure gaseous refrigerant by the compressor 300, then the high-temperature and high-pressure gaseous refrigerant passes through the condenser 500 and is cooled into a high-temperature and high-pressure liquid refrigerant. Before entering the condenser 500, the refrigerant firstly enters well water through the cooling loop 700 for cooling. Since the well water has a temperature much lower than that of air, the refrigerant may be cooled by heat exchange in the well water, then enters the condenser 500 under a pressure of the compressor 300 for further cooling. The liquid refrigerant then passes through the expansion valve 400 causing reduction both in pressure and temperature to change into a low-temperature and low-pressure liquid refrigerant, and then enters the evaporator 200 to start a next cycle.
Before entering the condenser 500, the refrigerant is firstly cooled by the well water to reduce the temperature of the refrigerant, and then enters the condenser 500 for condensation, thus eliminating a fan 600 of the condenser 500 and reducing energy consumption of the whole air conditioning system.
In addition, the refrigerant is introduced into the well water instead of pumping out the well water and cooling the refrigerant in the air conditioner, thus saving the water pump for pumping out the well water and reducing the energy consumption.
As an improvement to the technical solution above, the water-cooled air conditioning system further comprises a fan 600, wherein the evaporator 200 and the compressor 300 are also communicated through the feed pipe 100, so that the compressor 300, the evaporator 200, the condenser 500 and the expansion valve 400 form a refrigerant loop for a refrigerant to flow, the cooling loop 700 is communicated with the refrigerant loop through the discharge section 710 and the feed section 720, and the fan 600 is arranged at any side of the evaporator.
As an improvement to the technical solution above, a third valve 110 may be arranged between the compressor 300 and the condenser 500.
In actual operation, the refrigerant can be cooled by the well water in the cooling well by closing the third valve 110, and opening the first valve 711 and the second valve 721. In case that further cooling of the refrigerant is required, the fan 600 is opened to blow cold air to the condenser 500 when the refrigerant is returned to the condenser 500 and further cool the refrigerant.
In addition, when only the fan 600 is required to cool the refrigerant, the first valve 711 and the second valve 721 are closed, and the third valve 110 is opened, which is convenient for the user to switch.
In some embodiments, one end of the recovery pipe 810 inserted into the cooling well 800 is arranged on a surface layer of the cooling well 800.
When hot refrigerant enters the well water, the well water may be heated, and hot well water may float up to the surface. Therefore, the hot water needs to be guided from the surface of the cooling well 800 to the recovery well 900 to prevent the hot well water from affecting the cooling effect.
In some embodiments, the recovery pipe 810 may extend 20 m below a water surface where the cooling well 800 is located.
When used in the south, since an underground water level in the south is 4 m on average, the recovery pipe 810 needs to go 20 m underground to ensure that the water on the surface of the well can be pumped out.
In some embodiments, the cooling section 730 extends into a surface layer of the cooling well 800.
Cooling is directly performed on the surface layer to reduce the distance traveled by the refrigerant and reduce the energy consumption.
The specific structure and size data above describe the preferred embodiments of the disclosure in detail, but the disclosure is not limited to these embodiments; those skilled in the art may make various modifications or replacements without departing from the principle of the disclosure, and these modifications or replacements are all included in the scope limited by the claims of the application.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201910180921.3 | Mar 2019 | CN | national |
