Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
  • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
  • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
  • F24F5/0035—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using evaporation
• • E—FIXED CONSTRUCTIONS
  • E03—WATER SUPPLY; SEWERAGE
  • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
  • E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
  • E03B3/28—Methods or installations for obtaining or collecting drinking water or tap water from humid air
• • 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
• • 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
  • F25B1/00—Compression machines, plants or systems with non-reversible cycle
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
  • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
  • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
  • Y02B30/54—Free-cooling systems

Definitions

• the present invention relates to a condensing unit adapted for use in conjunction with an evaporator in air conditioning system; and more particularly an environmentally-friendly condensing unit which is capable of reducing temperature of waste heat being released into the environment when used in conjunction with an evaporator in air conditioning system.
• Air conditioning system has been widely used to cool a designated area so as to achieve a comfortable indoor temperature, especially by those living in uncomfortably hot climates. It should be noted that while being able to provide the desirous cooling effect inside a building, a significant amount of waste heat is also being discharged into the outdoor environment by the condensing unit of air conditioning system during its operation. The discharged waste heat could raise the outdoor temperature which adds to the severity of urban heat islands. It should be noted that higher or warmer outdoor temperature would eventually lead to increased air conditioning demand which resulting in a positive feedback loop.
• condensate water produced by the evaporator of air conditioning system is typically drained into the environment and not being utilised. Aside from impacting appearances of building, the disorderly discharge of condensate water is also a waste of free water source.
• condensing unit which is capable of reducing temperature of waste heat being discharged into the outdoor environment during its operation. Further, it is another objective of the present invention to provide a condensing unit which is utilising cold condensate water as an additional cooling medium and water source during its operation.
• the condensing unit according to the preferred embodiments of the present invention and its combination of elements or parts thereof will be described and/or exemplified in the detailed description.
• the present invention relates generally to a condensing unit adapted for use in conjunction with an evaporator in air conditioning system.
• the condensing unit of each of the preferred embodiments comprises an air outlet, at least one porous side wall, a compressor, a water reservoir for containing water, a centrifugal fan and at least one evaporative pad.
• the compressor is operatively connected to an evaporator coil of an evaporator, an expansion valve and a condensing coil through a plurality of refrigerant lines.
• the compressor is mounted on a supporting platform centrally located in the condensing unit.
• the compressor can be housed in a separate compartment contained within or connected to the condensing unit.
• the condensing coil is configured to be placed within a housing provided with at least one inlet and at least one outlet.
• the condensing unit is provided with a water pump.
• the water pump is configured to deliver and supply water contained in the water reservoir to the housing through at least one pipeline in fluid communication with the at least one inlet of the housing.
• the water entering the housing absorbs heat from the condensing unit during operation of the condensing unit.
• the water entering the housing will exit the housing through the at least one outlet of the housing.
• the water exiting the housing is delivered to the at least one evaporative pad by means of at least one conduit in fluid communication with the at least one outlet of the housing. It should be noted that the water is preferably delivered to the top of the at least one evaporative pad such that the water flows down and wet the entire evaporative pad.
• the condensing unit is provided with a first water pump and a second water pump.
• the first water pump of the condensing unit is configured to deliver and supply water contained in the water reservoir to the housing through at least one pipeline in fluid communication with the at least one inlet of the housing.
• the water entering the housing absorbs heat from the condensing unit during operation of the condensing unit.
• the water entering the housing will exit the housing through the at least one outlet of the housing.
• the water exiting the housing is delivered back to the water reservoir by means of at least one pipe in fluid communication with the at least one outlet of the housing.
• the second water pump of the condensing unit is configured to continuously deliver and supply water contained in the water reservoir to the at least one evaporative pad by means of at least one conduit operatively connected to the second water pump of the condensing unit.
• the water is preferably delivered to the top of the at least one evaporative pad such that the water flows down and wet the entire evaporative pad.
• the at least one evaporative pad is preferably mounted proximate the at least one porous side wall of the condensing unit.
• the centrifugal fan is suitably positioned proximate the air outlet of the condensing unit.
• the centrifugal fan is configured to draw ambient air from the at least one porous side wall of the condensing unit through the wetted evaporative pad. It will be appreciated that the drawn air remove heat from the wetted evaporative pad when the air travels through the wetted evaporative pad.
• the air that moves through the wetted evaporative pad is discharged through the air outlet of the condensing unit and excessive water from the wetted evaporative pad is cascaded back into the water reservoir.
• the condensate water formed on the evaporator coil of the evaporator is drained into the water reservoir of the condensing unit through a condensate line.
• the condensate water is used as an additional cooling medium to cool the warm water contained in the water reservoir and also as an additional water source to replenish the volume of water in the water reservoir.
• the condensing unit may be further provided with a plurality of wheels mounted on a base surface of the condensing unit for portability.
• FIG. 1 illustrates a side view of a condensing unit provided with a water receiving tray adapted for use in conjunction with an evaporator in air conditioning system in accordance with a preferred embodiment of the present invention
• FIG. 2 illustrates a side view of a condensing unit provided with a trough adapted for use in conjunction with an evaporator in air conditioning system in accordance with a preferred embodiment of the present invention
• FIG. 3 illustrates a front view of a condensing unit provided with a separate compartment to house a compressor and a housing in accordance with a preferred embodiment of the present invention
• FIG. 4 illustrates a side view of a condensing unit provided with a water receiving tray adapted for use in conjunction with an evaporator in air conditioning system in accordance with a further preferred embodiment of the present invention
• FIG. 5 illustrates a side view of a condensing unit provided with a trough adapted for use in conjunction with an evaporator in air conditioning system in accordance with a further preferred embodiment of the present invention
• FIG. 6 illustrates a front view of a condensing unit provided with a separate compartment to house a compressor and a housing in accordance with a further preferred embodiment of the present invention
• FIG. 7 illustrates a top view of the condensing unit as showed in FIGS.1 and 4; and FIGS. 8a and 8b illustrate a top view of the condensing unit as showed in FIGS. 2 and 5 showing different embodiments of trough of the condensing unit of the present invention.
• the present invention relates to a condensing unit adapted for use in conjunction with an evaporator in air conditioning system. More particularly, an environmentally- friendly condensing unit which is capable of reducing temperature of waste heat being released into the environment during its operation.
• an environmentally- friendly condensing unit which is capable of reducing temperature of waste heat being released into the environment during its operation.
• FIGS. 1 to 8b preferred embodiments of a condensing unit 100 adapted for use in conjunction with an evaporator 300 in air conditioning system 1 in accordance with the present invention are depicted. It should be noted that certain elements or parts of the condensing unit 100 of the present invention are common to the depicted embodiments and are commonly numbered in FIGS. 1 to 8b.
• the condensing unit 100 of each of the preferred embodiments of the present invention comprising an air outlet 110, at least one porous side wall 120, a compressor 140, a water reservoir 150 for containing water, a centrifugal fan 180 and at least one evaporative pad 130.
• the condensing unit 100 of the present invention is adapted to be operatively connected to any known evaporator in air conditioning system.
• the compressor 140 of the condensing unit 100 is operatively connected to an evaporator coil 310 of an evaporator 300, an expansion valve 500 and a condensing coil 190 through a plurality of refrigerant lines 700 and formed a closed circuit.
• the closed circuit is filled with refrigerant.
• the compressor 140 is preferably mounted on a supporting platform 40.
• the supporting platform 40 is centrally located in the condensing unit 100 as illustrated in FIGS. 1, 2, 4 and 5.
• the compressor 140 can be housed in a separate compartment 600 contained within or connected to the condensing unit as illustrated in FIGS. 3 and 6.
• the condensing coil 190 of the condensing unit 100 is configured to be placed within a housing 10 provided with at least one inlet 11 and at least one outlet 13 as illustrated in FIGS. 1 to 6.
• the condensing coil 190 is made of copper tubing for efficient heat transfer.
• the condensing coil 190 is preferably helically arranged and can have either a vertical or horizontal orientation.
• the housing 10 containing the condensing coil 190 can either be sited internal or external of the condensing unit 100.
• the housing 10 is preferably mounted on the supporting platform 40 as illustrated in FIGS. 1, 2, 4 and 5.
• the housing 10 can be contained within the compartment 600 of the condensing unit 100 as illustrated in FIGS. 3 and 6.
• the water reservoir 150 is preferably sited below the at least one evaporative pad 130 as illustrated in FIGS. 1 to 6. It should be noted that the water reservoir 150 should be filled with sufficient water before the condensing unit 100 is put into operation. If desired, the top of the water reservoir 150 may be covered by a non-corrosive removable mesh screen to prevent dirt or small organisms such as insects from entering the water reservoir 150.
• the removable mesh screen may be formed of plastic, aluminium, or any other suitable lightweight non-corrosive material.
• water is supplied into the water reservoir 150 through a water inlet 151 connected to a float valve 153 as illustrated in FIGS. 1 to 6.
• the float valve 153 is configured to control water flow so as to replenish and maintain the water level of the water reservoir 150 during operation of the condensing unit 100.
• the water reservoir 150 of the condensing unit 100 is provided with an overflow pipe 157.
• the overflow pipe 157 is located proximate the top of the water reservoir 150 as illustrated in FIGS. 1, 2, 4 and 5. It should be noted that the overflow pipe 157 is configured to allow surplus water to be discharged from the water reservoir 150 in the event of malfunctioning of the float valve 153.
• the water reservoir 150 of the condensing unit 100 is provided with a drain pipe 155.
• the drain pipe 155 is located proximate the bottom of the water reservoir 150 as illustrated in FIGS. 1 to 6. It should be noted that the drain pipe 155 is configured to drain water from the water reservoir 150 for maintenance or servicing of the condensing unit 100.
• FIGS. 1 to 3 illustrates a preferred embodiment of the present invention.
• a water pump 160 is configured to deliver and supply water contained in the water reservoir 150 to the housing 10 by means of at least one pipeline 60 in fluid communication with the at least one inlet 11 of the housing 10.
• the water flowing through the condensing coil 190 will become warm after absorbing the heat from the hot refrigerant in the condensing coil 190 and the warm water will exit the housing 10 through the at least one outlet 13 of the housing 10.
• the warm water exiting the housing 10 is delivered to the at least one evaporative pad 130 by means of at least one conduit 80 in fluid communication with the at least one outlet 13 of the housing 10.
• the water pump 160 of this preferred embodiment may be placed external to the water reservoir 150 or is a submersible type as illustrated in FIGS. 1 to 3.
• the water exiting the housing 10 is preferably delivered to an upper surface 131 of the at least one evaporative pad 130 such that the water flows down and wet the at least one evaporative pad 130. It should be noted that the excessive water from the wetted evaporative pad 130 will be cascaded back into the water reservoir 150.
• the condensing unit 100 may be provided with a water receiving tray 20 as illustrated in FIGS. 1 and 7 or a trough 30 as illustrated in FIGS.
• the condensing unit 100 is provided with the water receiving tray 20, the water receiving tray 20 is suitably mounted on top of the condensing unit 100.
• the water receiving tray 20 is having a recessed channel 21 formed along the water receiving tray perimeter.
• the recessed channel 21 situated above the evaporative pad 130 is provided with a plurality of spaced apart apertures 21a as illustrated in FIG.7.
• the water receiving tray 20 is in fluid communication with the at least one conduit 80.
• the at least one conduit 80 may either integrally form with the water receiving tray 20 or affix to an opening 23 of the water receiving tray 20 through interference fit or application of suitable adhesives.
• the water in the water receiving tray 20 will be uniformly and continuously dispensed onto the upper surface 131 of the evaporative pad 130 through the plurality of apertures 21a formed at the base of the recessed channel 21.
• the recessed channel 21 of the water receiving tray 20 may be U-shaped or V-shaped in section.
• a lid 50 may be provided to cover the water receiving tray 20 so as to prevent dirt or small organisms such as insects from entering the water receiving tray 20 as illustrated in FIG. 1.
• the lid 50 may be formed of plastic, aluminium, or any other suitable lightweight material.
• the trough 30 is suitably positioned above the at least one evaporative pad 130 and is in fluid communication with the at least one conduit 80.
• the at least one conduit 80 may either integrally form with the trough 30 or affix to an opening of the trough 30 through interference fit or application of suitable adhesives.
• the trough 30 only covers a portion of the upper surface 131 of the evaporative pad 130 as illustrated in FIG. 2 so as to allow the water to be directly distributed over the upper surface 131 of the evaporative pad 130.
• the trough 30 may be provided with a plurality of spaced apart indentations 31a preferably formed on at least one side wall 31 of the trough 30 as illustrated in FIG.8a. It should be noted that the plurality of indentations 31a of the trough 30 are configured to allow the water to flow uniformly out of the trough 30 such that the water is continuously distributed over the upper surface 131 of the evaporative pad 130.
• the trough 30 may be provided with a plurality of protruding lips 31b formed integral with and extend outwardly from the at least one side wall 31 of the trough 30 as illustrated in FIG. 8b. It should be noted that the plurality of protruding lips 31b of the trough 30 are configured to guide and direct the flow of water onto the upper surface 131 of the evaporative pad 130 in a continuous and uniform manner.
• FIGS. 4 to 6 illustrate a further preferred embodiment of the present invention.
• a first water pump 170a is configured to deliver and supply water contained in the water reservoir 150 to the housing 10 by means of at least one pipeline 60 in fluid communication with the at least one inlet 11 of the housing 10.
• the water flowing through the condensing coil 190 will become warm after absorbing the heat from the hot refrigerant in the condensing coil 190 and the warm water will exit the housing 10 through the at least one outlet 13 of the housing 10.
• the warm water exiting the housing 10 is delivered to back to the water reservoir 150 by means of at least one pipe 70 in fluid communication with the at least one outlet 13 of the housing 10.
• the water contained in the water reservoir 150 is continuously delivered to the at least one evaporative pad 130 of the condensing unit 100 through at least one conduit 90 operatively connected to a second water pump 170b of the condensing unit 100.
• the second water pump 170b is configured to continuously pump and supply the water from the water reservoir 150 to the at least one evaporative pad 130.
• first and second water pumps 170a and 170b of this preferred embodiment may be placed external to the water reservoir 150 or is a submersible type as illustrated in FIGS. 4 to 6.
• the water from the water reservoir 150 is preferably delivered to an upper surface 131 of the at least one evaporative pad 130 such that the water flows down and wet the at least one evaporative pad 130. It should be noted that the excessive water from the wetted evaporative pad 130 will be cascaded back into the water reservoir 150.
• the condensing unit 100 may be provided with a water receiving tray 20 as illustrated in FIGS. 4 and 7 or a trough 30 as illustrated in FIGS. 5, 8a and 8b.
• the water receiving tray 20 is suitably mounted on top of the condensing unit 100.
• the water receiving tray 20 is having a recessed channel 21 formed along the water receiving tray perimeter.
• the recessed channel 21 situated above the evaporative pad 130 is provided with a plurality of spaced apart apertures 21a as illustrated in FIG.7.
• the water receiving tray 20 is in fluid communication with the at least one conduit 90.
• the at least one conduit 90 may either integrally form with the water receiving tray 20 or affix to an opening 23 of the water receiving tray 20 through interference fit or application of suitable adhesives.
• the water in the water receiving tray 20 will be uniformly and continuously dispensed onto the upper surface 131 of the evaporative pad 130 through the plurality of apertures 21a formed at the base of the recessed channel 21.
• the recessed channel 21 of the water receiving tray 20 may be U-shaped or V-shaped in section.
• a lid 50 may be provided to cover the water receiving tray 20 so as to prevent dirt or small organisms such as insects from entering the water receiving tray 20 as illustrated in FIG. 4.
• the lid 50 may be formed of plastic, aluminium, or any other suitable lightweight material.
• the trough 30 is suitably positioned above the at least one evaporative pad 130 and is in fluid communication with the at least one conduit 90.
• the at least one conduit 90 may either integrally form with the trough 30 or affix to an opening of the trough 30 through interference fit or application of suitable adhesives.
• the trough 30 only covers a portion of the upper surface 131 of the evaporative pad 130 as illustrated in FIG. 5 so as to allow the water to be directly distributed over the upper surface 131 of the evaporative pad 130.
• the trough 30 may be provided with a plurality of spaced apart indentations 31a preferably formed on at least one side wall 31 of the trough 30 as illustrated in FIG.8a. It should be noted that the plurality of indentations 31a of the trough 30 are configured to allow the water to flow uniformly out of the trough 30 such that the water is continuously distributed over the upper surface 131 of the evaporative pad 130.
• the trough 30 may be provided with a plurality of protruding lips 31b formed integral with and extend outwardly from the at least one side wall 31 of the trough 30 as illustrated in FIG. 8b. It should be noted that the plurality of protruding lips 31b of the trough 30 are configured to guide and direct the flow of water onto the upper surface 131 of the evaporative pad 130 in a continuous and uniform manner.
• the at least one evaporative pad 130 is preferably mounted proximate the at least one porous side wall 120 of the condensing unit 100. It should be noted that the at least one evaporative pad 130 is preferably having dimensions sufficient to conceal the at least one porous side wall 120 of the condensing unit 100. In the present invention, it is preferred that the number of evaporative pads 130 correspond to the number of porous side walls 120 of the condensing unit 100.
• the condensing unit 100 of each of the preferred embodiments of the present invention is provided with three porous side walls 120 and each of the three porous side walls 120 is concealed by the evaporative pad 130.
• the evaporative pad 130 is preferably honeycomb cooling pad.
• the honeycomb cooling pad is made of cellulose.
• the evaporative pad 130 may be a multilayer fiber pad or a wood wool pad or corrugated cardboard or the like.
• a filtering means may be detachably disposed at the porous side walls 120 of the condensing unit 100 so as to filter out dust, dirt, odors or other undesired substances carried in the air entering the condensing unit 100 and thereby, extending the life and efficiency of the evaporative pad 130.
• the filtering means may include but not limited to carbon filter.
• the centrifugal fan 180 is preferably deposited at the central portion of the condensing unit 100 and suitably positioned proximate the air outlet 110 of the condensing unit 100 as illustrated in FIGS. 1, 2, 4 and 5.
• ambient air from the surrounding is drawn by the centrifugal fan 180 from the at least one porous side wall 120 and travelled through the at least one evaporative pad 130. It will be appreciated that the drawn air cools the water flowing down the at least one evaporative pad 130 through heat transfer. It should be noted that the at least one evaporative pad 130 must have a sufficient thickness so as to allow efficient heat exchange.
• the thickness of the evaporative pad 130 is preferably in the range of 50mm to 80mm in order to achieve the desirous heat transfer efficiency.
• the thickness of the evaporative pad 130 can be a variety of thicknesses and the thickness may vary depending on the materials of the evaporative pad 130 used in the condensing unit 100.
• the drawn air is discharged through the air outlet 110 of the condensing unit 100.
• the temperature of the air discharged from the air outlet 110 of the condensing unit 100 of the present invention is in the range of about 23°C to 30°C which is almost half of the temperature (50°C to 60°C) of waste heat generated by a typical condenser in air conditioning system. More specifically, the temperature of the air discharged from the air outlet 110 of the condensing unit 100 of the present invention is in the range of about 25°C to 30°C during day time when the outdoor temperature is in the range of about 27°C to 35°C.
• the temperature of the air discharged from the air outlet 110 of the condensing unit 100 of the present invention is in the range of about 23°C to 27°C when the outdoor temperature is in the range of about 23°C to 30°C.
• condensate water formed on the evaporator coil 310 of the evaporator 300 is being channeled into the water reservoir 150 of the condensing unit 100 through a condensate line 900 as illustrated in FIGS. 1 to 7. It should be noted that aside from being used as an additional cooling medium to cool the water contained in the water reservoir 150, the condensate water is also used as an additional water source to replenish the volume of water contained in the water reservoir 150.
• the condensing unit 100 may be further provided with a plurality of wheels 400 as illustrated in FIGS. 1, 2, 4 and 5 for portability.
• the plurality of wheels 400 are mounted on a base surface of the condensing unit 100.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• General Engineering & Computer Science (AREA)
• Health & Medical Sciences (AREA)
• Hydrology & Water Resources (AREA)
• Public Health (AREA)
• Water Supply & Treatment (AREA)
• Environmental & Geological Engineering (AREA)
• Sustainable Development (AREA)
• Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
• Removal Of Water From Condensation And Defrosting (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=76686684

Family Applications (1)

Country Status (4)

Citations (5)

• 2020
  • 2020-12-29 JP JP2022600153U patent/JP3240103U/ja active Active
  • 2020-12-29 CN CN202090001025.2U patent/CN218846310U/zh active Active
  • 2020-12-29 WO PCT/MY2020/050207 patent/WO2021137695A1/en active Application Filing
  • 2020-12-31 TW TW109147113A patent/TW202136693A/zh unknown

Patent Citations (5)

Also Published As

Similar Documents

Legal Events