KR20130122490A - Method of vaporization cooling system - Google Patents
Method of vaporization cooling system Download PDFInfo
- Publication number
- KR20130122490A KR20130122490A KR1020120045869A KR20120045869A KR20130122490A KR 20130122490 A KR20130122490 A KR 20130122490A KR 1020120045869 A KR1020120045869 A KR 1020120045869A KR 20120045869 A KR20120045869 A KR 20120045869A KR 20130122490 A KR20130122490 A KR 20130122490A
- Authority
- KR
- South Korea
- Prior art keywords
- air
- cooling system
- heat exchanger
- outdoor unit
- vaporization
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/04—Condensers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
- F28C1/04—Direct-contact trickle coolers, e.g. cooling towers with cross-current only
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F25/00—Component parts of trickle coolers
- F28F2025/005—Liquid collection; Liquid treatment; Liquid recirculation; Addition of make-up liquid
Abstract
The present invention is a fine water particle injection using a two-fluid nozzle is a mixed injection nozzle for mixing and spraying water and air,
Evaporative cooling of air generated during the injection process, this vaporization cooling is applied to the heat exchanger of the outdoor unit,
More specifically, the vaporization cooling system characterized by increasing the heat exchange efficiency by forcibly vaporizing the air temperature by spraying fine water particles in and around the heat exchanger fin (coil) of the outdoor unit during the heat exchange step of the outdoor unit operation step. It is about the design of.
Description
The present invention relates to the design of a system for vaporizing and cooling the air by using a two-fluid injection nozzle for injecting a mixture of water and air, and to a high efficiency heat exchange using the same.
Heat exchange of the air-cooled outdoor unit decreases the efficiency of heat exchange as the atmospheric temperature increases,
Since the heat exchange efficiency of the outdoor unit starts to gradually decrease from the atmospheric temperature of 30 ° C, and the heat exchange efficiency decreases sharply above 33 ° C, the industry uses various means of heat exchange (cooling) such as a cooler or a chiller to increase the heat exchange efficiency. The situation is improving efficiency.
The heat exchange efficiency of the outdoor unit is closely related to the energy consumption, and the higher the heat exchange efficiency, the higher the energy efficiency.
The present invention intends to save energy by improving heat exchange efficiency, and devised a vaporization cooling system for this purpose.
In general, coolers such as refrigerators, air conditioners, electric heat pumps (EHPs), and gas heat pumps (GHPs) having a refrigeration cycle include compressors for compressing and transferring refrigerant gas, condensers for condensing refrigerant gas, and evaporators for generating cold heat. As a cooling method of the heat exchanger, cooling (heat exchange) is performed in various ways such as air cooling, water cooling, and mixed cooling.
The object of the present invention is an air-cooled outdoor unit, and a main component is a cooler composed of a compressor, a condenser, a blower fan, a heat exchanger fin (coil), and the like, and a description of other cooling methods and a cooler system will be omitted.
Among the major components of the air-cooled outdoor unit, the heat exchanger is a heat exchanger coil consisting of a condenser and a curved tube and a straight tube, and a heat exchanger of aluminum (copper plate) having a high heat transfer efficiency of about 0.15 to 0.5 mm thickness which is inserted into a straight tube having a thickness of about 2 to 5 mm. Base fin (cooling fin) and the like.
The heat exchanger coil and the heat exchanger fins are integrally combined heat exchanger fins (coils), and forced suction-discharge air into the gaps of the heat exchanger fins (coils) that are densely arranged by the airflow of the outdoor fan blower fan. The surface of the coil) is cooled and serves to cool and condense the refrigerant gas moving in the tube.
In order to efficiently heat exchange the air-cooled outdoor unit, the present invention proposes a heat exchange using evaporative cooling of air, and evaporative cooling of air uses evaporation heat (evaporation heat). The amount of heat absorbed from the outside.
This heat of vaporization is the same size as the heat of condensation emitted when the gas turns into a liquid, and it is a kind of hidden heat. It is usually the amount of heat required to vaporize 1 g of material at a constant temperature. The heat of vaporization of 1 g of water at 0 ° C. is about 597 cal, 100 The heat of vaporization of 1 g of water at 占 폚 is about 539 cal.
The generation (action) of the heat of vaporization is more active as the air temperature is high and the humidity is low, and the heat exchanger fin (coil) and the surrounding conditions of the outdoor unit are formed at a temperature of about 50 ° C. or more and a humidity of about 20% or less during the heat exchange process. Therefore, it is effective for cooling heat exchanger fin (coil) and condensation of refrigerant gas by using vaporization heat.
In addition, in order to generate effective heat of vaporization (action), by designing a vaporization cooling system that injects fine water particles with high vaporization rate and low operating energy, by injecting to the heat exchanger fin (coil) air layer of the outdoor unit, the heat exchange efficiency of the air-cooled outdoor unit is improved. The technical background is to increase.
The present invention is proposed to increase the heat exchange efficiency of the prior art,
Existing air-cooled outdoor unit has low condensation efficiency due to heat exchange only within the temperature difference range between the air temperature and the refrigerant, and implies that heat exchange is impossible below the air temperature.
In addition, when the air temperature of the high temperature heater in summer rises rapidly and exceeds the design dry bulb temperature (typically 32 ° C DBT), the condensation efficiency drops drastically as the heat exchanger cooling function drops, resulting in peak power generation, operation disturbances, and inefficiency in power usage. Proceed.
The present invention is to overcome the disadvantages of the heat exchange of the air-cooled outdoor unit described above, it is to achieve the energy saving of the cooler because the efficient heat exchange is made through this.
In order to achieve the above object,
In the present invention, there is provided an outdoor unit including a compressor, a heat exchanger, a blower fan, a heat exchanger fin (coil), and the like as shown in the schematic diagram shown in FIG.
At this time, the injection nozzle of the evaporative cooling system is fixed to the heat exchanger fin (coil) direction to be injected.
On the other hand, the nozzle position of the evaporative cooling system is installed at a distance of 10 ~ 15cm relative to the upper grill in consideration of the suction power of the blower fan, thereby allowing the fine water particles to reach the bottom of the heat exchanger fin (coil).
On the other hand, the driving power of the air pump and the solenoid valve of the evaporative cooling system is connected to the blower fan operating power to share with the operation of the blower fan.
In addition, since the positions of the heat exchanger fin (coil) and the blower fan vary according to the type of the outdoor unit as shown in FIG. 2, the injection direction and the fixed position are determined in consideration of the suction directions of the heat exchanger fin (coil) and the blower fan.
According to the practice of the present invention, the heat exchange efficiency of the outdoor unit is increased, and energy saving is possible by improving the heat exchange efficiency.
According to the practice of the present invention, it is possible to avoid the peak power of the freezer and air conditioner during high temperature in summer.
With the operation of the vaporization cooling system of the present invention, as the fine water particles are injected, dust or air pollutants around the outdoor unit are blocked, thereby obtaining a secondary effect of preventing contamination of the heat exchanger fins (coils).
1 is a configuration of the vaporization cooling system for vaporization cooling of the present invention
Figure 2 is a schematic view of the injection type according to the outdoor unit type of the present invention
Figure 3 is a schematic diagram of the evaporative cooling of the heat exchanger fin (coil) according to the blower fan operation and air flow
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The vaporization cooling system of Figure 1 is a two-
At this time, the spray nozzle type is a two-fluid nozzle capable of low pressure spraying and adjustable vaporization rate, and uses a nozzle with a vaporization rate of 70% or more.The power consumption of the air pump is 20w, the air pressure is 0.12kg / ㎠, and the air volume is 40ℓ. / min, the water injection amount is 15-18ml / min, the pressure of the water (tap water) is preferably higher than the air pressure.
The power and water lines for operating the vaporization cooling system connect the operating power of the air pump and the solenoid valve so that the water can be automatically supplied by opening the water (tap water) supply solenoid valve simultaneously with the operation of the air pump.
By connecting and sharing the evaporative cooling system to the blower fan power when the power and water supply lines are completed, the evaporative cooling system is operated when the blower fan is operated and the evaporative cooling system is stopped when the blower fan is stopped. Allow the evaporative cooling system to work together.
On the other hand, since the position of the heat exchanger fin (coil) is different depending on the type of outdoor unit as shown in FIG. 2, the fixed position of the spray nozzle is fixed and injected at a position where the heat-cooled air can cool the heat exchanger fin (coil) as much as possible. It is preferable to install it.
[Example]
As the indoor cooling started, heat exchange of the outdoor unit proceeded and the blower fan operated.
At this time, the temperature of the heat exchanger fin (coil) gradually increased to a high temperature of 50 ° C. or higher, and as a result of measuring the humidity of the wind discharged from the blower fan, the temperature of the discharge air (wind) was measured to be 50 ° C. or higher. It became.
Subsequently, the blower fan was operated to simultaneously operate the evaporative cooling system. Since the power of the evaporative cooling system is shared with the blower fan power, the air pump and water supply solenoid valve for supplying air to the spray nozzle are supplied with power. As the air and water were supplied, spraying of fine water particles began.
Subsequently, as the injection of the fine water particles started, the air was vaporized and cooled, and the temperature of the heat exchanger fin (coil) and the surrounding air dropped about 10 ° C, and the temperature of the air around the heat exchanger fin (coil) became about 20 ° C.
At this time, the vaporized air temperature is natural because the degree of vaporization (flow rate) flows according to the temperature, atmospheric temperature, and humidity of the heat exchanger fin (coil) is also fluid.
Subsequently, the heat exchanger fin (coil) of the outdoor unit and the vaporized cooled air around the outdoor unit are sucked into the tight gap of the heat exchanger fin (coil) through the air flow of the blower fan and then contacted with the cooling air as shown in the schematic diagram of FIG. 3. Through the process, the heat exchanger fin (coil) was cooled and discharged continuously to the discharge port of the blower fan.
Subsequently, after the heat exchange of the outdoor unit is completed, the operation of the blower fan is stopped, and the vaporization cooling system that shares the power with the blower fan is also stopped, so that water is blocked and the operation of the air pump is stopped, thereby spraying fine water particles. Stopped and the evaporative cooling system stopped.
At this time, it is a matter of course that the continuous evaporative cooling system can be operated separately from the power supply of the blower fan for the purpose of continuously cooling the heat exchanger fin (coil).
Subsequently, the heat exchange system of the outdoor unit was repeatedly operated and stopped, and the linked vaporization cooling system was also repeatedly operated and stopped, so that high efficiency heat exchange was accumulated and repeated.
Next, an experimental example of the present invention will be described.
Experimental Example 1 Measurement of Power Consumption of a General Air-Cooled Air Conditioner
The power consumption was measured by the normal air conditioner operation method.
The air temperature discharged from the blower fan during the heat exchange was about 55 ° C. and the humidity about 17%.
The measurement period was 10 days and the air conditioner operating time was 8 hours per day.
As a result of measuring power consumption, about 237.2kw of power was consumed.
[Experimental example 2] Measurement of power consumption of air conditioner with vaporization cooling system
The evaporative cooling system was operated in conjunction with the blower fan power source and tap water was used.
The spray nozzle uses a two-fluid nozzle that mixes water and air, and the vaporization rate is about 70%, the water consumption is about 18ml / min, the air pressure is 0.12kg / ㎠, the air volume is 40ℓ / min, the power is A 20w diaphragm type air pump was used.
The installation position of the spray nozzle was fixed at the upper center with respect to the heat exchanger fin (coil) of the outdoor unit and sprayed downward from the top.
During operation of the evaporative cooling system during the heat exchange, the measured air (wind) temperature from the blower fan was about 43 ° C and about 27% humidity.
The measurement period was 10 days and the air conditioner operating time was 8 hours per day.
As a result of measuring power consumption, about 180.8kw of power was consumed.
As a result of comparing Experimental Example 1 and Experimental Example 2,
Compared to the normal air conditioner operation, the application of the evaporative cooling system achieved energy savings of about 23%.
The present invention is to increase the heat exchange efficiency of the air conditioner to reduce the power consumption, energy saving is also conducive to carbon reduction.
20: Water control valve 30: Water supply and shutoff valve
40: water (tap water) line 50: water, air backflow shutoff valve
60: air pump (compressor) 70: small outdoor unit (front discharge)
100: outdoor unit 110: outdoor unit heat exchanger fin (coil) seal
120: outdoor unit machine room 130: outdoor unit heat exchanger fin (coil)
140: blower fan 150: upper grill
160: compressor 170: four sides
180: accumulator 190: heat exchanger
200: expansion valve 210: copper pipe line
220: vaporization cooling air layer 230: spray nozzle
Claims (4)
An evaporative cooling system consisting of a heat exchanger fin (coil) of the outdoor unit and an airflow nozzle (air compressor) for air-cooling the surrounding air, a solenoid valve, a water control valve, and a check valve for preventing the backflow;
An interlocking system in which the evaporative cooling system and the heat exchange system are interlocked by connecting and sharing the evaporative cooling system with the blower fan operating power;
In conjunction with the operation of the blower fan during heat exchange, the vaporization cooling system is operated,
The vaporization cooling system of the present invention is characterized in that the heat exchange efficiency of the outdoor unit is improved by cooling the heat exchanger fins (coils) vaporized by fine water particle injection.
It is a two-fluid nozzle of water and air mixed spray method, the vaporization rate is over 50%,
Development of a vaporization cooling system using a low pressure air pump with a power consumption of 20 w or less, a commercial air pressure of 0.12 kg / cm 2 or less, and an air volume of 40 l / min.
Design of an evaporative cooling system that continuously cools the heat exchanger fins (coils) without interlocking with the blower fans.
Design of an evaporative cooling system characterized by applying an evaporative cooling system to an electric heat pump (EHP), a gas heat pump (GHP), a refrigerator, a refrigerator, and an outdoor unit heat exchanger fin (coil) of a small air conditioner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120045869A KR20130122490A (en) | 2012-04-30 | 2012-04-30 | Method of vaporization cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120045869A KR20130122490A (en) | 2012-04-30 | 2012-04-30 | Method of vaporization cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20130122490A true KR20130122490A (en) | 2013-11-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020120045869A KR20130122490A (en) | 2012-04-30 | 2012-04-30 | Method of vaporization cooling system |
Country Status (1)
| Country | Link |
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| KR (1) | KR20130122490A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190138911A (en) | 2018-06-07 | 2019-12-17 | (주)아페스 | Air Conditioner Having Double Cooling System |
| KR20200085682A (en) | 2020-05-28 | 2020-07-15 | (주)아페스 | Air Conditioner Having Double Cooling System |
-
2012
- 2012-04-30 KR KR1020120045869A patent/KR20130122490A/en not_active Application Discontinuation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190138911A (en) | 2018-06-07 | 2019-12-17 | (주)아페스 | Air Conditioner Having Double Cooling System |
| KR20200085682A (en) | 2020-05-28 | 2020-07-15 | (주)아페스 | Air Conditioner Having Double Cooling System |
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| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| WITB | Written withdrawal of application |