EP2078175B1 - Dehumidifying cooling device for district heating - Google Patents

Dehumidifying cooling device for district heating Download PDF

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Publication number
EP2078175B1
EP2078175B1 EP07715548.9A EP07715548A EP2078175B1 EP 2078175 B1 EP2078175 B1 EP 2078175B1 EP 07715548 A EP07715548 A EP 07715548A EP 2078175 B1 EP2078175 B1 EP 2078175B1
Authority
EP
European Patent Office
Prior art keywords
air
channel
wet channel
outside air
hole
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP07715548.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2078175A4 (en
EP2078175A1 (en
Inventor
Seok-Mann Yoon
Dae-Young Lee
Hoon Lee
Chang-Ku Kang
Sung-Ook Jeong
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Korea District Heating Corp
Original Assignee
Korea District Heating Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Korea District Heating Corp filed Critical Korea District Heating Corp
Publication of EP2078175A1 publication Critical patent/EP2078175A1/en
Publication of EP2078175A4 publication Critical patent/EP2078175A4/en
Application granted granted Critical
Publication of EP2078175B1 publication Critical patent/EP2078175B1/en
Ceased legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/1411Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
    • F24F3/1423Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant with a moving bed of solid desiccants, e.g. a rotary wheel supporting solid desiccants
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00Ventilation
    • F24F7/04Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F24F7/08Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B27/00Machines, plants or systems, using particular sources of energy
    • F25B27/02Machines, plants or systems, using particular sources of energy using waste heat, e.g. from internal-combustion engines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B5/00Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2203/00Devices or apparatus used for air treatment
    • F24F2203/10Rotary wheel
    • F24F2203/1024Rotary wheel combined with a humidifier
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2203/00Devices or apparatus used for air treatment
    • F24F2203/10Rotary wheel
    • F24F2203/1028Rotary wheel combined with a spraying device
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2203/00Devices or apparatus used for air treatment
    • F24F2203/10Rotary wheel
    • F24F2203/1032Desiccant wheel
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2203/00Devices or apparatus used for air treatment
    • F24F2203/10Rotary wheel
    • F24F2203/104Heat exchanger wheel
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2203/00Devices or apparatus used for air treatment
    • F24F2203/10Rotary wheel
    • F24F2203/1072Rotary wheel comprising two rotors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2203/00Devices or apparatus used for air treatment
    • F24F2203/10Rotary wheel
    • F24F2203/1084Rotary wheel comprising two flow rotor segments

Definitions

  • the present invention relates to a dehumidifying cooling device for district heating, and more particularly, to a dehumidifying cooling device for district heating which can carry out an air cooling operation by use of hot water supplied by large-scale or small-scale district heating systems and gas or oil boilers installed in individual households.
  • the amount of energy consumed in domestic and business fields of Korean in 2003 is approximately 55 millions TOE a year, and occupies 25.2% of the total national consumption energy. This rate also corresponds to 41.9% on the basis of electricity.
  • the energy consumption of domestic and business fields shows an average annual rate of increase of 5.3%, whereas the consumption of electricity shows an average annual rate of increase of 12%. Accordingly, it will be appreciated that the consumption of electricity particularly has a rapid increase.
  • the collective-energy industry is evaluated as an effective industry capable of dealing with related international environmental restrictions including a climatic change convention, etc.
  • a climatic change convention etc.
  • approximately 1.2 million families share in the benefits of district heating in 2003, and in particular, 85% of supplied energy is generated by combined heat and power generation. Korea has a plan to expand the propagation range of district heating to 2 million families by 2010.
  • the generation ratio of electricity to heat is fixed at 3 : 5. Therefore, it is important to keep the ratio of electricity to heat at an appropriate level for maximizing the effect of the collective-energy industry.
  • the above mentioned generation ratio can be fulfilled in winter, but the summer of Korea has an increased electricity load for air cooling and substantially no heat load. As a result, the operation rate of distinct heating in summer decreases to less than 10%, and this causes a deterioration in the economical efficiency of cogeneration. Actually, no generation results reported between June and September in 2003.
  • an absorption chiller is installed to a receptor, such as a large-scale building, etc. such that the chiller performs a central cooling operation using energy delivered from distinct heating facilities.
  • the absorption chiller is designed to chill water flowing in a pipe by use of heat generated during the evaporation of a liquid-phase refrigerant and condense the evaporated gas-phase refrigerant for the reuse thereof.
  • WO 99/36733 A1 discloses a desiccant-assisted air conditioning systems having a process air path for dehumidifying air by passing the air through a desiccant, and a regeneration air path for desorbing moisture from the desiccant by passing heated air through the desiccant, process air and regeneration air alternatingly passing through the desiccant.
  • the system further comprises a desiccant wheel; two sensible heat exchangers; a heater; and a humidifier. Process air is dehumidified in the desiccant wheel, is cooled in a first heat exchanger by exchanging heat with the regeneration air, and in the humidifier.
  • Outside air serving as regeneration air is heated in the first sensible heat exchanger by transferring heat from the dehumidified process air, and by the heater, and then passed through the desiccant wheel to desorb the moisture from the desiccant member.
  • heat of the post-regeneration regeneration air is recovered by heat exchange with unheated regeneration air in the second sensible heat exchanger.
  • the first heat exchanger and the humidifier are replaced by a heat exchanger, which is arranged only in the process air path.
  • the absorption chiller has a limit in the improvement of performance due to a low temperature of a heating source.
  • the absorption chiller has an uneconomical high water return temperature because it cannot use water having a temperature of 80°C or less, and suffers from a little difference between the temperature of supplied water and the temperature of water to be returned.
  • the present invention has been made in view of the above problems, and it is an object of the present invention to provide a dehumidifying cooling device for district heating which can carry out an air cooling operation by use of hot water supplied by large-scale or small-scale district heating systems and gas or oil boilers installed in individual households, thereby achieving a reduced device size via the implementation of the cooling operation under the atmospheric pressure state and reducing manufacturing costs by virtue of a simplified system configuration.
  • a dehumidifying cooling device for district heating comprising: a case having a first partition to divide the interior of the case into a wet channel and a dry channel and a second partition to divided the wet channel into a first wet channel and a second wet channel, the first wet channel being provided at one end thereof with an outside air suction hole for introducing outside air into the first wet channel, the second wet channel being provided at one end thereof with an exhaust hole for discharging the outside air, the second partition being perforated with a flow hole for transferring the outside air from the first wet channel into the second wet channel, the dry channel being provided, at one end thereof, with a circulated air suction hole for introducing circulated air from a conditioning space into the dry channel and, at the other end thereof, with an air supply hole for supplying cooling air into the conditioning space; a sensible heat exchanger configured to rotate about the second partition and serving to heat exchange the outside air, introduced
  • the device further comprises a direct-evaporative cooler installed in the dry channel at a position in front of the regenerative-evaporative cooler, the direct-evaporative cooler serving to carry out a secondary cooling operation of the circulated air discharged from the regenerative-evaporative cooler.
  • a direct-evaporative cooler installed in the dry channel at a position in front of the regenerative-evaporative cooler, the direct-evaporative cooler serving to carry out a secondary cooling operation of the circulated air discharged from the regenerative-evaporative cooler.
  • the device further comprises a first filter installed in the first wet channel at a position between the outside air suction hole and the sensible heat exchanger and serving to remove impurities contained in the outside air.
  • a first filter installed in the first wet channel at a position between the outside air suction hole and the sensible heat exchanger and serving to remove impurities contained in the outside air.
  • the device further comprises an exhaust blower installed in the second wet channel at a position between the sensible heat exchanger and the flow hole and serving to forcibly discharge the outside air from the second wet channel through the exhaust hole.
  • an exhaust blower installed in the second wet channel at a position between the sensible heat exchanger and the flow hole and serving to forcibly discharge the outside air from the second wet channel through the exhaust hole.
  • the device further comprises: a second filter installed between the circulated air suction hole and the dehumidifying wheel and serving to remove impurities contained in the circulated air; and an air supply blower installed between the dehumidifying wheel and the regenerative-evaporative cooler and serving to forcibly discharge the cooled circulated air from the dry channel through the air supply hole, wherein the second filter and the air supply blower are installed in the dry channel.
  • a second filter installed between the circulated air suction hole and the dehumidifying wheel and serving to remove impurities contained in the circulated air
  • an air supply blower installed between the dehumidifying wheel and the regenerative-evaporative cooler and serving to forcibly discharge the cooled circulated air from the dry channel through the air supply hole, wherein the second filter and the air supply blower are installed in the dry channel.
  • the case further has a cooler exhaust hole provided at the dry channel for discharging high-temperature air generated while the regenerative-evaporative cooler carries out a secondary cooling operation.
  • the amount of the high-temperature air to be discharged through the cooler exhaust hole is 30% of the total circulated air.
  • the hot water to be introduced into the heating coil is delivered from any one selected from among a cogeneration plant, a heating boiler, a micro-turbine, a small gas engine, a small gas turbine, a gas boiler, and an oil boiler.
  • the circulated air suctioned through the circulated air suction hole is mixed with the outside air by a predetermined mixing ratio of 7 : 3.
  • a dehumidifying cooling device for district heating of the present invention having the above described configuration, it is possible to carry out an air cooling operation by use of hot water supplied by large-scale or small-scale district heating systems and gas or oil boilers installed in individual households. Accordingly, the present invention has the effect of achieving a reduced device size via the implementation of the cooling operation under the atmospheric pressure state, and reducing manufacturing costs by virtue of a simplified system configuration.
  • FIG. 1 is a view illustrating the configuration of a dehumidifying cooling device for district heating according to the present invention.
  • the dehumidifying cooling device 100 comprises a case 110, a first filter 120, a sensible heat exchanger 130, a heating coil 140, a dehumidifying wheel 150, an exhaust blower 160, a second filter 170, an air supply blower 180, a regenerative-evaporative cooler 190, and a direct-evaporative cooler 200.
  • the case 110 is made of a metallic material and has a rectangular box shape.
  • the case 110 is installed with a first partition 113 to divide the interior of the case 110 into a wet channel 112 and a dry channel 111.
  • the case 110 is further installed with a second partition 114 to divide the wet channel 112 into a first wet channel 112-1 and a second wet channel 112-2.
  • the case 110 has an outside air suction hole 115 provided at one end of the first wet channel 112-1 for introducing outside air into the first wet channel 112-1 and an exhaust hole 116 provided at one end of the second wet channel 112-2 for discharging the outside air.
  • the second partition 114 is perforated with a flow hole 114-1 for transferring the outside air from the first wet channel 112-1 into the second wet channel 112-2.
  • the case 110 also has a circulated air suction hole 117 provided at one end of the dry channel 111 for introducing circulated air from a conditioning space CS into the dry channel 111 and an air supply hole 118 provided at the other end of the dry channel 111 for supplying cooling air into the conditioning space CS.
  • the dry channel 111 of the case 110 is further provided with a cooler exhaust hole 119 for discharging high-temperature air generated while the regenerative-evaporative cooler 190 carries out a secondary cooling operation that will be described hereinafter.
  • the circulated air, introduced into the case 110 through the circulated air suction hole 117 is mixed with the outside air at a ratio of 7 : 3, to keep the interior of the case 110 in the atmospheric pressure state.
  • the first filter 120 is located in the first wet channel 112-1 of the case 110 at a position between the outside air suction hole 115 and the sensible heat exchanger 130.
  • the first filter 120 is used to remove impurities contained in the suctioned outside air.
  • the first filter 120 is an antibacterial filter, and is easily separable from the case 110.
  • the sensible heat exchanger 130 has a rotating shaft 131 installed in the same direction as the second partition 114 and takes the form of a disc to rotate about the rotating shaft 131 inside the first and second wet channels 112-1 and 112-2 of the case 110.
  • the sensible heat exchanger 130 is used to heat exchange the outside air introduced into the first wet channel 112-1 through the outside air suction hole 115 with the outside air to be discharged from the second whet channel 112-2 through the exhaust hole 116.
  • the sensible heat exchanger 130 takes the form of a honeycomb-patterned disc fabricated by processing a thin plate, such as an aluminum plate, etc. suitable for heat exchange. There are provided an additional motor and belt (not shown) for rotation of the sensible heat exchanger 130.
  • the heating coil 140 is located in the first wet channel 112-1 of the case 110 at a position between a rear end of the sensible heat exchanger 130 and the flow hole 114-1.
  • the heating coil 140 is used to raise the temperature of the outside pair passing through the first wet channel 112-1 by use of heat of hot water introduced thereinto.
  • the hot water introduced into the heating coil 140 is delivered from any one selected from among a cogeneration plant, a heating boiler, a micro-turbine, a small gas engine, a small gas turbine, a gas boiler, and an oil boiler, and has a temperature within a range of 60 to 120°C.
  • the dehumidifying wheel 150 has a rotating shaft 151 installed in the same direction as the first partition 113, and takes the form of a disc to rotate about the rotating shaft 151 inside the first wet channel 112-1 and the dry channel 111 of the case 110.
  • the dehumidifying wheel 150 is located behind the heating coil 140 and serves to adsorb and remove moisture contained in the circulated air within the dry channel 111.
  • the dehumidifying wheel 150 is regenerated by evaporating the adsorbed moisture to thereby supply the moisture into the high-temperature outside air within the first wet channel 112-1.
  • the dehumidifying wheel 150 takes the form of a honeycomb-patterned disc containing an adsorbent, such as silica gel, zeolite, or the like, for adsorbing the moisture contained in the circulated air in a dry adsorption manner. There are provided an additional motor and belt (not shown) for rotation of the dehumidifying wheel 150.
  • an adsorbent such as silica gel, zeolite, or the like
  • the exhaust blower 160 is installed in the second wet channel 112-2 of the case 110 at a position between the sensible heat exchanger 130 and the flow hole 114-1, and used to forcibly discharge the outside air from the second wet channel 112-2 through the exhaust hole 116.
  • the second filter 170 is installed in the dry channel 111 of the case 110 at a position between the circulated air suction hole 117 and the dehumidifying wheel 150 and used to remove impurities and bad smell contained in the circulated air.
  • the second filter 170 is an antibacterial filter, and is easily separable from the case 110.
  • the air supply blower 180 is installed in the dry channel 111 of the case 110 at a position between the dehumidifying wheel 150 and the sensible heat exchanger 130 and used to forcibly discharge the circulated air from the dry channel 111 through the circulated air supply hole 118.
  • the regenerative-evaporative cooler 190 is installed in the dry channel 111 at a position between the circulated air supply hole 118 and the dehumidifying wheel 150. If the circulated air introduced into the dry channel 111 is dehumidified by the dehumidifying wheel 150 so as to be changed to high-temperature dry air and subsequently, heat exchanged and cooled, the regenerative-evaporative cooler 190 further cools the circulated air.
  • the cooled circulated air is delivered to the air supply hole 118 of the case 110, whereas the high-temperature air generated during cooling is delivered to the cooler exhaust hole 119.
  • the amount of the high-temperature air to be discharged through the cooler exhaust hole 119 is 30% of the total circulated air.
  • the interior of the regenerative-evaporative cooler 190 is divided into a dry channel and a wet channel. If a part of the air, passing through the dry channel, is delivered into the wet channel, the air is cooled as water is evaporated by the high-temperature surface of the wet channel, thereby acting to absorb heat from the remaining higher temperature air passing through the dry channel. Thereby, the air passing through the dry channel can be cooled to a dew-point temperature to the maximum extent without an increase of humidity.
  • the configuration of the regenerative-evaporative cooler is disclosed in Korea Patent Registration No. 0409265 and thus, a detailed description thereof will be omitted herein.
  • the direct-evaporative cooler 200 is installed in the dry channel 111 of the case 110 at a position in front of the regenerative-evaporative cooler 190.
  • the direct-evaporative cooler 200 serves to carry out a secondary cooling operation of the circulated air from the regenerative-evaporative cooler 190, so as to supply the resulting air into the conditioning space CS through the air supply hole 118 of the case 110.
  • FIG. 2 is a view illustrating the flow of air in the dehumidifying cooling device for district heating according to the present invention
  • FIG. 3 is a graph illustrating the temperature distribution of humid air used in the dehumidifying cooling device.
  • a dehumidifying cooling operation carried out in the dry channel 111 circulated air from the conditioning space CS, which is mixed with high-temperature and high-humidity outside air, is introduced into case 110 through the circulated air suction hole 117 under the operation of the air supply blower 180. After passing through the second filter 170, the introduced circulated air sequentially passes through the dehumidifying wheel 150 such that the moisture contained in the circulated air is removed by the adsorbent.
  • the dehumidified circulated air is heated by adsorptive heat generated from the surface of the dehumidifying wheel 150.
  • the resulting high-temperature and low-humidity circulated air passes through the regenerative-evaporative cooler 190.
  • the circulated air is introduced into the regenerative-evaporative cooler 190, 70% of the circulated air is cooled while passing through the regenerative-evaporative cooler 190, and 30% of the circulated air is discharged to the outside through the cooler exhaust hole 119.
  • the circulated air having passed through the regenerative-evaporative cooler 190, is secondarily cooled while passing through the direct-evaporative cooler 200, thereby being supplied into the conditioning space CS through the air supply hole 118 of the case 110.
  • high-temperature and high-humidity outside air is introduced into the first wet channel 112-1 through the outside air suction hole 115 and passes through the first filter 120 under the operation of the exhaust blower 160. Then, the filtered outside air is heat exchanged with the high-temperature and high-humidity outside air in the second wet channel 112-2 while passing through the sensible heat exchanger 130. Thereby, the outside air with the raised temperature passes through the heating coil 140.
  • the temperature of the outside air is further raised by hot water supplied into the heating coil 140.
  • the outside air to be delivered into the dehumidifying wheel 150 has a significantly raised temperature.
  • the dehumidifying wheel 150 rotating in a state of adsorbing moisture therein, the outside air forcibly evaporates moisture thereof. Thereafter, the dehumidified outside air is moved into the second wet channel 112-2 through the flow hole 114-1.
  • the surface of the dehumidifying wheel 150 is returned to an original dried state thereof, thereby recovering a dehumidifying ability thereof.
  • the dehumidifying cooling device for district heating if circulated air 1 is introduced into the case, the circulated air 1 is mixed with outside air 7, to produce mixed air 2 having a raised temperature and absolute humidity. While passing through the dehumidifying wheel, the mixed air 2 is changed to higher-temperature and lower absolute-humidity air 3.
  • the air 3 is heat exchanged to produce air 4 having a rapid drop only in temperature.
  • the temperature of the air 4 is changed into air having a slightly lowered temperature and slightly raised absolute humidity.
  • the filtered air 8 has the same temperature and absolute humidity as those of the air 7.
  • the air 8 is heat exchanged with the outside air 11 in the first wet channel while passing through the sensible heat exchanger.
  • the resulting heat exchanged air 9 is slightly raised in temperature, but keeps the same absolute humidity as that of the air 8. Then, the air 9 is raised only in temperature while passing through the heating coil, resulting in high-temperature air 10.
  • the air 10 is dropped in temperature, but raised in absolute humidity in the course of passing through the dehumidifying wheel, thereby being changed to low-temperature and high-humidity air 11. Then, while passing through the sensible heat exchanger in the second wet channel, the air 11 is heat exchanged with the outside air 8 in the first wet channel such that the heat exchanged air 12, which is slightly dropped in temperature but keeps the same absolute humidity as the air 11, is discharged through the exhaust hole.
  • the dehumidifying cooling device for district heating air to be supplied into a conditioning indoor space is subjected to the transfer of heat and moisture via a direct contact with the dehumidifying cooling device.
  • This has the effect of achieving excellent transfer efficiency and producing and supplying cooling air with a low-temperature heating source of 60°C.
  • the dehumidifying cooling device is operable in the atmospheric pressure state and has a simplified configuration, resulting in a considerable reduction of manufacturing costs.
  • a dehumidifying and cooling device can be installed to residential and business buildings, etc. using hot water delivered by district heating facilities, so as to utilize the hot water as a source for cooling a room.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Central Air Conditioning (AREA)
EP07715548.9A 2007-02-01 2007-03-08 Dehumidifying cooling device for district heating Ceased EP2078175B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020070010673A KR100773435B1 (ko) 2007-02-01 2007-02-01 지역난방용 제습냉방장치
PCT/KR2007/001148 WO2008041788A1 (en) 2007-02-01 2007-03-08 Dehumidifying cooling device for district heating

Publications (3)

Publication Number Publication Date
EP2078175A1 EP2078175A1 (en) 2009-07-15
EP2078175A4 EP2078175A4 (en) 2013-07-17
EP2078175B1 true EP2078175B1 (en) 2017-05-17

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ID=39060871

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Application Number Title Priority Date Filing Date
EP07715548.9A Ceased EP2078175B1 (en) 2007-02-01 2007-03-08 Dehumidifying cooling device for district heating

Country Status (8)

Country Link
US (1) US20100154455A1 (ko)
EP (1) EP2078175B1 (ko)
JP (1) JP2009530586A (ko)
KR (1) KR100773435B1 (ko)
CN (1) CN101346588B (ko)
MY (1) MY158155A (ko)
SA (1) SA08290039B1 (ko)
WO (1) WO2008041788A1 (ko)

Families Citing this family (19)

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CN101672502B (zh) * 2009-06-19 2012-06-06 上海天菡空气处理设备有限公司 热泵再生加热型节能除湿机的系统
US9038409B2 (en) * 2009-09-21 2015-05-26 Korea Research Institute Of Chemical Technology Apparatus for treating air by using porous organic-inorganic hybrid materials as an absorbent
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SA08290039B1 (ar) 2012-03-24
WO2008041788A1 (en) 2008-04-10
EP2078175A4 (en) 2013-07-17
KR100773435B1 (ko) 2007-11-05
CN101346588A (zh) 2009-01-14
JP2009530586A (ja) 2009-08-27
US20100154455A1 (en) 2010-06-24
EP2078175A1 (en) 2009-07-15

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