US20190162427A1 - Air conditioning economizer - Google Patents
Air conditioning economizer Download PDFInfo
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- US20190162427A1 US20190162427A1 US16/264,984 US201916264984A US2019162427A1 US 20190162427 A1 US20190162427 A1 US 20190162427A1 US 201916264984 A US201916264984 A US 201916264984A US 2019162427 A1 US2019162427 A1 US 2019162427A1
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- United States
- Prior art keywords
- refrigerant
- air conditioning
- textile member
- metering device
- evaporator
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/42—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger characterised by the use of the condensate, e.g. for enhanced cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
- F24F1/022—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing comprising a compressor cycle
- F24F1/027—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing comprising a compressor cycle mounted in wall openings, e.g. in windows
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/26—Refrigerant piping
- F24F1/30—Refrigerant piping for use inside the separate outdoor units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/36—Drip trays for outdoor units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
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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
- F25B40/00—Subcoolers, desuperheaters or superheaters
- F25B40/02—Subcoolers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
- F24F2013/225—Means for preventing condensation or evacuating condensate for evacuating condensate by evaporating the condensate in the cooling medium, e.g. in air flow from the condenser
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
- F24F2013/227—Condensate pipe for drainage of condensate from the evaporator
Definitions
- the disclosure relates to an air conditioning economizer, more particularly to an air conditioning economizer that is energy-efficient.
- a conventional way of improving the energy efficiency ratio is to use a heat exchanger having a special structure or material.
- the conventional material such as Cu and Al has a high thermal conductivity coefficient, but there are also other materials with higher thermal conductivity coefficients.
- selecting a material of the heat exchanger that is a precious metal having higher thermal conductivity would result in increased manufacturing costs.
- an object of the disclosure is to provide an air conditioning economizer that can alleviate at least one of the drawbacks of the prior art.
- the air conditioning economizer includes: a compressor that is adapted for compressing a vapor refrigerant into a compressed vapor refrigerant; a condenser that is adapted for condensing the compressed vapor refrigerant into a liquid refrigerant, and that includes an exit end through which the liquid refrigerant exits; a metering device that is adapted for depressurizing the liquid refrigerant into a liquid-vapor mixture of depressurized refrigerant; an evaporator that is adapted for evaporating the liquid-vapor mixture of depressurized refrigerant into the vapor refrigerant, and that generates condensed water (w) during operation; a refrigerant pipe that is a loop pipe interconnecting the compressor, the condenser, the metering device, and the evaporator, and that includes a supercooling section interconnecting the exit end of the condenser and the metering device; and a textile member that is capable
- FIG. 1 is a block diagram showing an air conditioning economizer of this disclosure
- FIG. 2 is a schematic view showing a first embodiment of the air conditioning economizer of this disclosure
- FIG. 3 is a schematic view showing a textile member of the first embodiment, the textile member covering a supercooling section of a refrigerant pipe of the first embodiment;
- FIG. 4 is a schematic view showing the textile member being wound on the supercooling section of the first embodiment
- FIG. 5 is a pressure-enthalpy diagram of a refrigerant during operation in the air conditioning economizer
- FIG. 6 is a fragmentary schematic view showing a second embodiment of the air conditioning economizer of this disclosure.
- FIG. 7 is a schematic view showing the textile member of the second embodiment, the textile member covering the supercooling section of the second embodiment.
- FIG. 8 is a schematic view showing the textile member being wound on the supercooling section of the second embodiment.
- a first embodiment of an air conditioning economizer may be a window-type air conditioning economizer 10 , and includes a compressor 1 , a condenser 2 , a fan 3 , an evaporator fan 6 , a metering device 4 , an evaporator 5 , a refrigerant pipe 7 , a container 8 , and a textile member 9 .
- the compressor 1 is adapted for compressing a vapor refrigerant into a compressed vapor refrigerant.
- the condenser 2 is adapted for condensing the compressed vapor refrigerant into a liquid refrigerant, and includes an exit end 21 through which the liquid refrigerant exits.
- the fan 3 is used for generating an airflow toward the condenser 2 .
- the metering device 4 is adapted for depressurizing the liquid refrigerant into a liquid-vapor mixture of depressurized refrigerant.
- the metering device 4 may be a capillary tube, an expansion valve, etc.
- the evaporator 5 is adapted for evaporating the liquid-vapor mixture of depressurized refrigerant into the vapor refrigerant. Moisture in the air is condensed into condensed water (w) by the evaporator 5 during operation (i.e., the evaporator 5 generates condensed water (w) during operation).
- the evaporator fan 6 is used for generating an airflow toward the evaporator 5 .
- the refrigerant pipe 7 is a loop pipe interconnecting the compressor 1 , the condenser 2 , the metering device 4 , and the evaporator 5 , and includes a supercooling section 71 interconnecting the exit end 21 of the condenser 2 and the metering device 4 .
- the container 8 supports the compressor 1 , condenser 2 , and the evaporator 5 .
- the condensed water (w) generated by the evaporator 5 is discharged into the container 8 and absorbed by the textile member 9 .
- the textile member 9 is capable of transferring moisture and is quick drying.
- the textile member 9 covers the supercooling section 71 of the refrigerant pipe 7 and the metering device 4 , and absorbs the condensed water (w).
- the textile member 9 is made of a material selected from the group consisting of nylon, elastane, polyester, polypropylene, and combinations thereof. In certain embodiments, the textile member 9 is made of 64% nylon, 24% polyester, and 12% elastane. It should be noted that the composition of the textile member 9 should not be limited by what are disclosed herein, as long as the textile member 9 is capable of absorbing moisture and has rapid drying ability.
- the rapid drying ability of the textile member 9 can be determined by measurement of a remained water ratio (RWR).
- RWR remained water ratio
- the test conditions are set according to Chinese National Standards 5611 (CNS-5611), in which the textile member 9 is cut into a 5 cm ⁇ 5 cm specimen, the temperature is controlled at 20 ⁇ 2° C., and the relative humidity is maintained at 65 ⁇ 2%.
- the dry weight (w f ) of the specimen is recorded, followed by using a micropipette to drip a 0.2 mL water droplet at 1 cm above the center of the specimen, and recording the wet weight (w 0 ) of the specimen.
- the weight of the specimen (w i ) is recorded at 1-minute intervals (alternatively, 10-minute intervals) continuously for an overall testing time of 100 minutes.
- the 40 th minute specimen weight is chosen as the assessment index for this test.
- the 40 th minute RWR (%) is calculated by (w i ⁇ w f )/(w 0 ⁇ w f ) ⁇ 100%.
- the textile member 9 has a remained water ratio not greater than 35%. In certain embodiments, the textile member 9 has a remained water ratio not greater than 13%.
- the textile member 9 has a covering section 91 that covers the supercooling section 71 of the refrigerant pipe 7 and the metering device 4 , and at least one extending section 92 that extends from the covering section 91 into the container 8 for absorbing the condensed water (w) that is discharged into the container 8 .
- the number of the extending section 92 is more than one, with each extending section 92 extending into the container 8 , thereby achieving improved water-absorbing efficiency (see FIG. 3 ).
- the at least one extending section 92 of the textile member 9 may be connected to the container 8 (see FIG. 2 ). Referring to FIG.
- the textile member 9 is a strip of fiber that is wound on the supercooling section 71 of the refrigerant pipe 7 to cover the supercooling section 71 .
- the strip of fiber has multiple fiber parts that are sewn together. It should be noted that the attaching mechanism of the textile member 9 should not be limited to those disclosed above, and may be changed according to practical requirements.
- FIG. 5 is a pressure-enthalpy diagram of a refrigerant during operation in the air conditioning economizer.
- L 1 denotes a refrigeration cycle.
- L 2 is a saturation curve.
- the refrigerant enters the compressor 1 at point 1 as a saturated vapor and leaves the compressor 1 at point 2 as a superheated vapor. This process is termed adiabatic compression. Then, the refrigerant enters the condenser 2 as the superheated vapor at point 2 and leaves the condenser 2 as a saturated liquid at point 3 , which is an isobaric heat rejection process.
- the refrigerant passes through the metering device 4 , undergoes adiabatic expansion at constant enthalpy, and reaches point 4 as a liquid-vapor mixture. Finally, the refrigerant enters the evaporator 5 , undergoes isobaric evaporation, and returns to point 1 as the saturated vapor.
- the refrigerant may not be completely evaporated in the evaporator 5 , and liquid compression may happen in the compressor 1 , which may reduce the lifetime of the compressor 1 . Therefore, the refrigerant is superheated at point 1 to ensure safety of the compressor 1 .
- the actual compression process (point 1 - 2 ) involves frictional effects, which increase the entropy.
- the condensed water (w) in the container 8 is absorbed by the extending section 92 of the textile member 9 , and then permeated to the covering section 91 .
- the heat exchange including sensible heat and latent heat, between the supercooling section 71 of the refrigerant pipe 7 , the metering device 4 and the condensed water (w), the temperatures of the supercooling section 71 and the metering device 4 and the refrigerant therein can be decreased.
- Efficiency of the air conditioning economizer can be measured by the coefficient of performance (COP), which is proportional to the energy efficiency ratio (EER).
- the coefficient of performance of the air conditioning economizer is defined by (h 1 ⁇ h 4 )/(h 2 ⁇ h 1 ), in which h 1 , h 2 , h 3 , and h 4 are respectively the enthalpy values of the refrigerant at points 1 , 2 , 3 , and 4 . Since the process from point 3 to point 4 is an adiabatic expansion process at constant enthalpy, the value of h 3 equals h 4 . Therefore, the coefficient of performance can be increased by increasing the value of h 1 -h 4 .
- the efficiency of the air conditioning economizer can be increased by increasing the degree of supercooling of the refrigerant, and therefore increasing the value of h 1 -h 4 .
- the textile member 9 to cover the metering device 4 , the energy loss of the refrigerant associated with flashing can be lowered.
- the condensed water (w) evaporated inside the air conditioning economizer can reduce the temperature of the airflow passing through the condenser 2 , which is beneficial to heat dissipation of the condenser 2 .
- a second embodiment of the air conditioning economizer 10 is similar to the first embodiment, with differences disclosed hereinafter.
- the second embodiment is a split-type air conditioning economizer which includes an indoor unit 20 , an outdoor unit 30 , and a water guiding tube 201 .
- the indoor unit 20 includes the evaporator 5 and the evaporator fan 6 .
- the outdoor unit 30 includes the compressor 1 , the condenser 2 , the fan 3 , an outdoor container 301 and the metering device 4 .
- the condensed water (w) generated by the evaporator 5 of the indoor unit 20 is directed to the outdoor unit 30 by the water guiding tube 201 such that the condensed water (w) is absorbed by the textile member 9 that covers the supercooling section 71 of the refrigerant pipe 7 .
- at least a part of the refrigerant pipe 7 that interconnects the indoor unit 20 and the outdoor unit 30 is covered with an insulation member 700 for preventing the heat of ambient environment from heating up the refrigerant in the refrigerant pipe 7 .
- the water guiding tube 201 has a discharge end 202 that is adjacent to the textile member 9 .
- the condensed water (w) is directed to the water guiding tube 201 , discharged from the water guiding tube 201 through the discharge end 202 , and directly guided onto and absorbed by the textile member 9 .
- the outdoor container 301 includes a box 301 a for receiving the condensed water (w) that flows through but is not absorbed by the textile member 9 .
- the condensed water (w) is discharged from the water guiding tube 201 into the box 301 a , and the textile member 9 absorbs the condensed water (w) from the box 301 a.
- the at least one extending section 92 extends from the covering section 91 into the box 301 a for absorbing the condensed water (w) in the box 301 a .
- the at least one extending section 92 of the textile member 9 may be connected to the box 301 a (see FIG. 6 ).
- the textile member 9 is capable of absorbing the condensed water (w) to cool the supercooling section 71 of the refrigerant pipe 7 and the metering device 4 via sensible heat transfer.
- the cooling efficiency of the air conditioning economizer can be further increased via latent heat transfer during evaporation of the condensed water (w). Therefore, the degree of supercooling of the refrigerant can be increased, thereby increasing the coefficient of performance and the energy efficiency ratio of the air conditioning economizer.
- the textile member 9 can be easily installed to cover the supercooling section 71 , and therefore the air conditioning economizer of this disclosure is easy to manufacture and cost-efficient to maintain.
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- Engineering & Computer Science (AREA)
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- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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- Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
Abstract
An air conditioning economizer includes a compressor, a condenser, a metering device, an evaporator generating condensed water during operation, a refrigerant pipe and a textile member. The refrigerant pipe is a loop pipe interconnecting the compressor, the condenser, the metering device and the evaporator, and includes a supercooling section interconnecting the condenser and the metering device. The textile member is capable of transferring moisture, is quick drying, covers the supercooling section and the metering device, and is adapted for absorbing the condensed water.
Description
- This application is a divisional application of U.S. patent application Ser. No. 15/156,763 (filed on May 17, 2016), which claims priority of Taiwanese Invention Patent Application No. 104139323, filed on Nov. 26, 2015.
- The disclosure relates to an air conditioning economizer, more particularly to an air conditioning economizer that is energy-efficient.
- Due to the increasing demand for quality of life, air conditioners are becoming widely used in people's daily lives. With growing concerns over environmental issues, air conditioners with high energy efficiency ratios (EER) are highly appreciated. A conventional way of improving the energy efficiency ratio is to use a heat exchanger having a special structure or material. The conventional material such as Cu and Al has a high thermal conductivity coefficient, but there are also other materials with higher thermal conductivity coefficients. However, selecting a material of the heat exchanger that is a precious metal having higher thermal conductivity would result in increased manufacturing costs.
- Therefore, an object of the disclosure is to provide an air conditioning economizer that can alleviate at least one of the drawbacks of the prior art.
- According to the disclosure, the air conditioning economizer includes: a compressor that is adapted for compressing a vapor refrigerant into a compressed vapor refrigerant; a condenser that is adapted for condensing the compressed vapor refrigerant into a liquid refrigerant, and that includes an exit end through which the liquid refrigerant exits; a metering device that is adapted for depressurizing the liquid refrigerant into a liquid-vapor mixture of depressurized refrigerant; an evaporator that is adapted for evaporating the liquid-vapor mixture of depressurized refrigerant into the vapor refrigerant, and that generates condensed water (w) during operation; a refrigerant pipe that is a loop pipe interconnecting the compressor, the condenser, the metering device, and the evaporator, and that includes a supercooling section interconnecting the exit end of the condenser and the metering device; and a textile member that is capable of transferring moisture and is quick drying, the textile member covering the supercooling section of the refrigerant pipe and the metering device, and being adapted for absorbing the condensed water (w).
- Other features and advantages of the disclosure will become apparent in the following detailed description of the embodiments with reference to the accompanying drawings, of which:
-
FIG. 1 is a block diagram showing an air conditioning economizer of this disclosure; -
FIG. 2 is a schematic view showing a first embodiment of the air conditioning economizer of this disclosure; -
FIG. 3 is a schematic view showing a textile member of the first embodiment, the textile member covering a supercooling section of a refrigerant pipe of the first embodiment; -
FIG. 4 is a schematic view showing the textile member being wound on the supercooling section of the first embodiment; -
FIG. 5 is a pressure-enthalpy diagram of a refrigerant during operation in the air conditioning economizer; -
FIG. 6 is a fragmentary schematic view showing a second embodiment of the air conditioning economizer of this disclosure; -
FIG. 7 is a schematic view showing the textile member of the second embodiment, the textile member covering the supercooling section of the second embodiment; and -
FIG. 8 is a schematic view showing the textile member being wound on the supercooling section of the second embodiment. - Before the disclosure is described in greater detail, it should be noted that where considered appropriate, reference numerals or terminal portions of reference numerals have been repeated among the figures to indicate corresponding or analogous elements, which may optionally have similar characteristics.
- Referring to
FIGS. 1 to 4 , a first embodiment of an air conditioning economizer may be a window-typeair conditioning economizer 10, and includes acompressor 1, acondenser 2, afan 3, anevaporator fan 6, ametering device 4, anevaporator 5, arefrigerant pipe 7, acontainer 8, and atextile member 9. Thecompressor 1 is adapted for compressing a vapor refrigerant into a compressed vapor refrigerant. Thecondenser 2 is adapted for condensing the compressed vapor refrigerant into a liquid refrigerant, and includes anexit end 21 through which the liquid refrigerant exits. Thefan 3 is used for generating an airflow toward thecondenser 2. Themetering device 4 is adapted for depressurizing the liquid refrigerant into a liquid-vapor mixture of depressurized refrigerant. Themetering device 4 may be a capillary tube, an expansion valve, etc. Theevaporator 5 is adapted for evaporating the liquid-vapor mixture of depressurized refrigerant into the vapor refrigerant. Moisture in the air is condensed into condensed water (w) by theevaporator 5 during operation (i.e., theevaporator 5 generates condensed water (w) during operation). Theevaporator fan 6 is used for generating an airflow toward theevaporator 5. Therefrigerant pipe 7 is a loop pipe interconnecting thecompressor 1, thecondenser 2, themetering device 4, and theevaporator 5, and includes asupercooling section 71 interconnecting theexit end 21 of thecondenser 2 and themetering device 4. In this embodiment, thecontainer 8 supports thecompressor 1,condenser 2, and theevaporator 5. The condensed water (w) generated by theevaporator 5 is discharged into thecontainer 8 and absorbed by thetextile member 9. - Specifically, the
textile member 9 is capable of transferring moisture and is quick drying. Thetextile member 9 covers thesupercooling section 71 of therefrigerant pipe 7 and themetering device 4, and absorbs the condensed water (w). - The
textile member 9 is made of a material selected from the group consisting of nylon, elastane, polyester, polypropylene, and combinations thereof. In certain embodiments, thetextile member 9 is made of 64% nylon, 24% polyester, and 12% elastane. It should be noted that the composition of thetextile member 9 should not be limited by what are disclosed herein, as long as thetextile member 9 is capable of absorbing moisture and has rapid drying ability. - The rapid drying ability of the
textile member 9 can be determined by measurement of a remained water ratio (RWR). To be more specific, the test conditions are set according to Chinese National Standards 5611 (CNS-5611), in which thetextile member 9 is cut into a 5 cm×5 cm specimen, the temperature is controlled at 20±2° C., and the relative humidity is maintained at 65±2%. The dry weight (wf) of the specimen is recorded, followed by using a micropipette to drip a 0.2 mL water droplet at 1 cm above the center of the specimen, and recording the wet weight (w0) of the specimen. The weight of the specimen (wi) is recorded at 1-minute intervals (alternatively, 10-minute intervals) continuously for an overall testing time of 100 minutes. The 40th minute specimen weight is chosen as the assessment index for this test. The 40th minute RWR (%) is calculated by (wi−wf)/(w0−wf)×100%. Thetextile member 9 has a remained water ratio not greater than 35%. In certain embodiments, thetextile member 9 has a remained water ratio not greater than 13%. - The
textile member 9 has a coveringsection 91 that covers thesupercooling section 71 of therefrigerant pipe 7 and themetering device 4, and at least one extendingsection 92 that extends from thecovering section 91 into thecontainer 8 for absorbing the condensed water (w) that is discharged into thecontainer 8. In this embodiment, the number of the extendingsection 92 is more than one, with each extendingsection 92 extending into thecontainer 8, thereby achieving improved water-absorbing efficiency (seeFIG. 3 ). Furthermore, in certain embodiments, the at least one extendingsection 92 of thetextile member 9 may be connected to the container 8 (seeFIG. 2 ). Referring toFIG. 4 , in certain embodiments, thetextile member 9 is a strip of fiber that is wound on thesupercooling section 71 of therefrigerant pipe 7 to cover thesupercooling section 71. Alternatively, the strip of fiber has multiple fiber parts that are sewn together. It should be noted that the attaching mechanism of thetextile member 9 should not be limited to those disclosed above, and may be changed according to practical requirements. -
FIG. 5 is a pressure-enthalpy diagram of a refrigerant during operation in the air conditioning economizer. L1 denotes a refrigeration cycle. L2 is a saturation curve. In an ideal vapor refrigeration cycle, the refrigerant enters thecompressor 1 atpoint 1 as a saturated vapor and leaves thecompressor 1 atpoint 2 as a superheated vapor. This process is termed adiabatic compression. Then, the refrigerant enters thecondenser 2 as the superheated vapor atpoint 2 and leaves thecondenser 2 as a saturated liquid atpoint 3, which is an isobaric heat rejection process. Afterwards, the refrigerant passes through themetering device 4, undergoes adiabatic expansion at constant enthalpy, and reachespoint 4 as a liquid-vapor mixture. Finally, the refrigerant enters theevaporator 5, undergoes isobaric evaporation, and returns topoint 1 as the saturated vapor. In an actual refrigeration cycle, the refrigerant may not be completely evaporated in theevaporator 5, and liquid compression may happen in thecompressor 1, which may reduce the lifetime of thecompressor 1. Therefore, the refrigerant is superheated atpoint 1 to ensure safety of thecompressor 1. The actual compression process (point 1-2) involves frictional effects, which increase the entropy. In the point 2-3 process (the actual condensed process) and the point 4-1 process (the actual evaporated process), refrigerant friction causes a pressure drop. The refrigerant is subcooled somewhat before it enters themetering device 4. The point 3-4 is an adiabatic and isenthalpic process. The refrigerant is evaporated in theevaporator 5, and the heat exchange between theevaporator 5 and ambient air leads to the generation of the condensed water (w). The condensed water (w) is received in thecontainer 8. - The condensed water (w) in the
container 8 is absorbed by the extendingsection 92 of thetextile member 9, and then permeated to thecovering section 91. Through the heat exchange, including sensible heat and latent heat, between the supercoolingsection 71 of therefrigerant pipe 7, themetering device 4 and the condensed water (w), the temperatures of thesupercooling section 71 and themetering device 4 and the refrigerant therein can be decreased. - Efficiency of the air conditioning economizer can be measured by the coefficient of performance (COP), which is proportional to the energy efficiency ratio (EER). The coefficient of performance of the air conditioning economizer is defined by (h1−h4)/(h2−h1), in which h1, h2, h3, and h4 are respectively the enthalpy values of the refrigerant at
points point 3 topoint 4 is an adiabatic expansion process at constant enthalpy, the value of h3 equals h4. Therefore, the coefficient of performance can be increased by increasing the value of h1-h4. In other words, the efficiency of the air conditioning economizer can be increased by increasing the degree of supercooling of the refrigerant, and therefore increasing the value of h1-h4. Moreover, by using thetextile member 9 to cover themetering device 4, the energy loss of the refrigerant associated with flashing can be lowered. In addition, the condensed water (w) evaporated inside the air conditioning economizer can reduce the temperature of the airflow passing through thecondenser 2, which is beneficial to heat dissipation of thecondenser 2. - Referring to
FIGS. 1 and 6 , a second embodiment of theair conditioning economizer 10 is similar to the first embodiment, with differences disclosed hereinafter. The second embodiment is a split-type air conditioning economizer which includes anindoor unit 20, anoutdoor unit 30, and awater guiding tube 201. Theindoor unit 20 includes theevaporator 5 and theevaporator fan 6. Theoutdoor unit 30 includes thecompressor 1, thecondenser 2, thefan 3, anoutdoor container 301 and themetering device 4. The condensed water (w) generated by theevaporator 5 of theindoor unit 20 is directed to theoutdoor unit 30 by thewater guiding tube 201 such that the condensed water (w) is absorbed by thetextile member 9 that covers thesupercooling section 71 of therefrigerant pipe 7. In certain embodiments, at least a part of therefrigerant pipe 7 that interconnects theindoor unit 20 and theoutdoor unit 30 is covered with aninsulation member 700 for preventing the heat of ambient environment from heating up the refrigerant in therefrigerant pipe 7. - In certain embodiments, the
water guiding tube 201 has adischarge end 202 that is adjacent to thetextile member 9. The condensed water (w) is directed to thewater guiding tube 201, discharged from thewater guiding tube 201 through thedischarge end 202, and directly guided onto and absorbed by thetextile member 9. In certain embodiments, theoutdoor container 301 includes abox 301 a for receiving the condensed water (w) that flows through but is not absorbed by thetextile member 9. The condensed water (w) is discharged from thewater guiding tube 201 into thebox 301 a, and thetextile member 9 absorbs the condensed water (w) from thebox 301 a. - Referring to
FIGS. 7 and 8 , in certain embodiments, the at least one extendingsection 92 extends from the coveringsection 91 into thebox 301 a for absorbing the condensed water (w) in thebox 301 a. The at least one extendingsection 92 of thetextile member 9 may be connected to thebox 301 a (seeFIG. 6 ). - To sum up, the
textile member 9 is capable of absorbing the condensed water (w) to cool thesupercooling section 71 of therefrigerant pipe 7 and themetering device 4 via sensible heat transfer. With the rapid drying property of thetextile member 9, the cooling efficiency of the air conditioning economizer can be further increased via latent heat transfer during evaporation of the condensed water (w). Therefore, the degree of supercooling of the refrigerant can be increased, thereby increasing the coefficient of performance and the energy efficiency ratio of the air conditioning economizer. Furthermore, thetextile member 9 can be easily installed to cover thesupercooling section 71, and therefore the air conditioning economizer of this disclosure is easy to manufacture and cost-efficient to maintain. - In the description above, for the purposes of explanation, numerous specific details have been set forth in order to provide a thorough understanding of the embodiment(s). It will be apparent, however, to one skilled in the art, that one or more other embodiments may be practiced without some of these specific details. It should also be appreciated that reference throughout this specification to “one embodiment,” “an embodiment,” an embodiment with an indication of an ordinal number and so forth means that a particular feature, structure, or characteristic may be included in the practice of the disclosure. It should be further appreciated that in the description, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of various inventive aspects.
- While the disclosure has been described in connection with what is (are) considered the exemplary embodiment(s), it is understood that this disclosure is not limited to the disclosed embodiment(s) but is intended to cover various arrangements included within the spirit and scope of the broadest interpretation so as to encompass all such modifications and equivalent arrangements.
Claims (8)
1. An air conditioning economizer comprising:
a compressor that is adapted for compressing a vapor refrigerant into a compressed vapor refrigerant;
a condenser that is adapted for condensing the compressed vapor refrigerant into a liquid refrigerant, and that includes an exit end through which the liquid refrigerant exits;
a metering device that is adapted for depressurizing the liquid refrigerant into a liquid-vapor mixture of depressurized refrigerant;
an evaporator that is adapted for evaporating the liquid-vapor mixture of depressurized refrigerant into the vapor refrigerant, and that generates condensed water during operation;
a refrigerant pipe that is a loop pipe interconnecting said compressor, said condenser, said metering device, and said evaporator, and that includes a supercooling section interconnecting said exit end of said condenser and said metering device; and
a textile member that is capable of transferring moisture and is quick drying, said textile member covering said supercooling section of said refrigerant pipe and said metering device, and being adapted for absorbing the condensed water.
2. The air conditioning economizer as claimed in claim 1 , wherein said textile member has a remained water ratio not greater than 35% determined according to Chinese National Standards-5611 (CNS-5611) at the 40th minute.
3. The air conditioning economizer as claimed in claim 2 , wherein said textile member is made of a material selected from the group consisting of nylon, elastane, polyester, polypropylene, and combinations thereof.
4. The air conditioning economizer as claimed in claim 1 , further comprising a container that supports said condenser and said evaporator, the condensed water generated by said evaporator being discharged into the container and being absorbed by said textile member.
5. The air conditioning economizer as claimed in claim 4 , wherein said textile member has a covering section that covers said supercooling section of said refrigerant pipe, and at least one extending section that extends from said covering section into said container for absorbing the condensed water that is discharged into said container.
6. The air conditioning economizer as claimed in claim 5 , wherein said at least one extending section of said textile member is connected to said container.
7. The air conditioning economizer as claimed in claim 1 , wherein said textile member is a strip of fiber that is wound on said supercooling section of said refrigerant pipe to cover said supercooling section.
8. The air conditioning economizer as claimed in claim 7 , wherein said strip of fiber has multiple fiber parts that are sewn together.
Priority Applications (1)
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US16/264,984 US20190162427A1 (en) | 2015-11-26 | 2019-02-01 | Air conditioning economizer |
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TW104139323A TWI579509B (en) | 2015-11-26 | 2015-11-26 | Energy-saving air conditioning system |
TW104139323 | 2015-11-26 | ||
US15/156,763 US20170153028A1 (en) | 2015-11-26 | 2016-05-17 | Air conditioning economizer |
US16/264,984 US20190162427A1 (en) | 2015-11-26 | 2019-02-01 | Air conditioning economizer |
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US15/156,763 Division US20170153028A1 (en) | 2015-11-26 | 2016-05-17 | Air conditioning economizer |
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US20190162427A1 true US20190162427A1 (en) | 2019-05-30 |
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US15/156,763 Abandoned US20170153028A1 (en) | 2015-11-26 | 2016-05-17 | Air conditioning economizer |
US16/264,984 Abandoned US20190162427A1 (en) | 2015-11-26 | 2019-02-01 | Air conditioning economizer |
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US15/156,763 Abandoned US20170153028A1 (en) | 2015-11-26 | 2016-05-17 | Air conditioning economizer |
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CN107992644B (en) * | 2017-10-26 | 2021-06-08 | 苏州市建筑科学研究院集团股份有限公司 | Intelligent control energy-saving calculation method for kitchen lampblack discharge system after building energy-saving reconstruction |
CN108954777B (en) * | 2018-06-06 | 2020-12-18 | 海信(山东)空调有限公司 | Condensate water recycling system and air duct machine |
CN109442700B (en) * | 2018-11-08 | 2021-01-19 | 宁波奥克斯电气股份有限公司 | Energy-saving device capable of improving supercooling degree, energy-saving control method and air conditioner |
CN112303819A (en) * | 2020-09-24 | 2021-02-02 | 青岛海信日立空调***有限公司 | Air conditioner and control method |
CN113091297B (en) * | 2021-04-13 | 2023-06-23 | 青岛海尔空调器有限总公司 | Air conditioner pipeline structure and air conditioner |
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TW551478U (en) * | 2001-09-24 | 2003-09-01 | Taiwan Hitachi Co Ltd | Non-dripping refrigerant piping structure for refrigerating/air-conditioning system |
WO2010089315A2 (en) * | 2009-02-04 | 2010-08-12 | Universität Kassel | System for dehumidifying, heating and/cooling of a liquid |
US20140109428A1 (en) * | 2012-10-22 | 2014-04-24 | Seonghwan Kim | Dryer |
Family Cites Families (1)
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CN104372507A (en) * | 2013-08-16 | 2015-02-25 | 东丽纤维研究所(中国)有限公司 | Single side knitted fabric and use thereof |
-
2015
- 2015-11-26 TW TW104139323A patent/TWI579509B/en active
-
2016
- 2016-05-17 US US15/156,763 patent/US20170153028A1/en not_active Abandoned
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2019
- 2019-02-01 US US16/264,984 patent/US20190162427A1/en not_active Abandoned
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TW551478U (en) * | 2001-09-24 | 2003-09-01 | Taiwan Hitachi Co Ltd | Non-dripping refrigerant piping structure for refrigerating/air-conditioning system |
WO2010089315A2 (en) * | 2009-02-04 | 2010-08-12 | Universität Kassel | System for dehumidifying, heating and/cooling of a liquid |
US20140109428A1 (en) * | 2012-10-22 | 2014-04-24 | Seonghwan Kim | Dryer |
Also Published As
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TW201719082A (en) | 2017-06-01 |
TWI579509B (en) | 2017-04-21 |
US20170153028A1 (en) | 2017-06-01 |
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