EP1528345A1 - Verdampfungskondensator ohne Kühlrippen - Google Patents

Verdampfungskondensator ohne Kühlrippen Download PDF

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Publication number
EP1528345A1
EP1528345A1 EP03256937A EP03256937A EP1528345A1 EP 1528345 A1 EP1528345 A1 EP 1528345A1 EP 03256937 A EP03256937 A EP 03256937A EP 03256937 A EP03256937 A EP 03256937A EP 1528345 A1 EP1528345 A1 EP 1528345A1
Authority
EP
European Patent Office
Prior art keywords
water
streamline
evaporative condenser
tubes
condenser according
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.)
Withdrawn
Application number
EP03256937A
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English (en)
French (fr)
Inventor
Ho-Hsin Wu
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP03256937A priority Critical patent/EP1528345A1/de
Publication of EP1528345A1 publication Critical patent/EP1528345A1/de
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
    • F28B1/06—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using air or other gas as the cooling medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D5/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation
    • F28D5/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation in which the evaporating medium flows in a continuous film or trickles freely over the conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
    • F28F2250/02—Streamline-shaped elements

Definitions

  • the present invention relates to an evaporative type medium condenser of an outdoor apparatus of an air conditioning system without the utilizing of conventional cooling fins especially relates to an evaporative condenser which a plurality of streamline cross section bare metal tubes are used for the medium coils to tack the place of conventional round tube coils for highly increasing the evaporative efficiency by the bare streamline tubes themselves to omit the using of cooling fins so as to thoroughly avoid the possibility of deposit dirt and sediment on the coil tubes between conventional cooling fins to provide the improvement of a long life time and convenient for maintenance and cleaning therefore.
  • the air conditioning system is a very important installation now in daily life of human been, as to save the energy source, a problem of how to improve the E.E.R. of an air conditioning system will be a target of the designers and producers to be reached, therefore the type of heat dissipation for cooling the medium coils is improved from air cooling to water cooling and then tendered to evaporative cooling.
  • 1Kg of water absorbs 539 Kcal of latent heat while evaporated, but absorbs only 30 Kcal of heat while the temperature of 1Kg cooling water be raised 30°C as a maximum value that a water cooling system can be achieved, the deferent ratio is 18 times.
  • Fig.1A which a wind flow W blows faced to a leading edge A of a round sectional tube 110 with a layer of water film thereon, divided into two flows around the surface of the tube 110 respectively to point F and F' through two opposite point D and D' of a diameter of the tube 110 as shown by arrow headed lines and then directly blows to a tube 110' of next row of the coils.
  • a lot of drawbacks will be happened as:
  • Fig.1B shows a streamline cross sectional tube 120 according to the present invention to instead of the conventional round tube for medium coils which a wind flow W blows headed to a leading edge A of a large head portion of the streamline tube 120 and divided into two opposite path around the surface of tube 120 passing through the diameter DD', respectively to a gradual reduced rear portion of curve DE and D'E', in which, according to theory of aerodynamics, the wind flow W will blows still around the surface DE and D'E' of the reduced area closely, further more, there a rapid acceleration will be occurred to provide a large negative pressure thereon, therefore as a water film kept continuously on the surface of the streamline tube 120 in a wind flow W, it will be evaporated easily even at a room temperature under an extra low pressure (large negative pressure) and a large amount of latent heat of water evaporation (539 cal for evaporating 1gr of water) will be absorbed from the gaseous state medium in the tube 120 to produce a low temperature thereat, in which a low critical pressure
  • Fig.2A shown a first ellipse "A” taken from a projection view of a tilt cutting to a round tube R of a diameter D with an obtuse angle ⁇
  • Fig.2B shows a second ellipse "B” taken from a projection view cutting to a same round tube R of a diameter D with an acute angle ⁇
  • a streamline cross section is different from a cross section of a symmetrical aerofoil, which a symmetrical aerofoil section tube as shown in the figures of the prior arts of U.S. patent 3,885,936 and Japan patent 63,096,490 there a rear end of the tube is a narrow sharp angular form, while a rear end of a streamline cross sectional tube of the present invention as shows in Fig.
  • a narrow sharp angular form inside the tube may do nothing for a regular heat exchanger as claimed in the foresaid prior arts, but there will be a serious drawback for using to a medium condenser, because there will be a large amount of pressure drop occurred due to a high friction loss when the medium flow runs in the narrow sharp angular portion inside the tube, in which , an extra power of a medium compressor is needed for recovering the loss of pressure drop, the E.E.R. then can not be improved therefore.
  • Fig.3 shows another embodiment of a streamline tube may used in the present invention which a streamline tube 120 has a tail fin 122 extended from a rear end edge for increasing the heat dissipation rear therefore.
  • the present invention is a mew design according to the theory of aerodynamics to solve all the foresaid drawbacks of the conventional medium condensers.
  • a main object of the present invention is to provide a medium condenser composed of a plurality of streamline cross section bare metal tubes to improve a high evaporative heat dissipation efficiency according the theory of aerodynamics.
  • Another main object of the present invention is to provide a medium condenser without the using of conventional cooling fins to avoid the deposit dirt and sediment on the coil tubes between conventional cooling fins so as to maintain a long life time therefore.
  • Still another object of the present invention is to provide a medium condenser without conventional cooling fins for saving the cost and work of manufacturing, and convenient for maintenance and cleaning.
  • an upward flow type evaporative condenser 200 comprise a basin typed medium coil set 201 composed of a plurality of parallel streamline tubes laterally fixed on two opposite supporting plate 220 having their head portion toward downwardly for receiving water-fog partials sprayed upwardly from a plurality of water spray nozzles 202 there under to supply a water film continuously on to the surfaces of the tubes; at least one fan 203 of a wind flow supply system disposed at an outlet opening at a top of an overall casing 210 to draw the wind flow from a plurality of shutters 205 around the casing 210 upwardly for exhausting the heat and evaporated moisture out therefrom, while the wind flow sweep over the water films on the surfaces of the streamline tubes 208, the water films will be evaporated rapidly at a room temperature under a circumstance which a large negative pressure is occurred thereat, therefore a large amount of evaporative latent heat will be absorbed from the gaseous state medium flow
  • a gas-water separating layer 204 composed of thin plastic pieces disposed under the fan 203 over the coil set 201 for separating water particles from hot air and moisture before exhausting, a water collecting pan 206 disposed under the coil set 201 for collecting residual water dropt thereinto; a water reservoir 207 disposed under one side of the water collecting pan 206 having a small size high pressure water pump (not shown) pumping water to the water spray nozzles 202, and a floating valve (not shown) to control a city water inlet (not shown) to maintain a proper constant water level in the water reservoir 207; a recycling water temperature reducing layer 209 composed of a plurality irregular-faced plastic fins disposed over the water collecting pan 206 for cooling the residual water to avoid an accumulation of temperature raising of water in a recycling system therefore.
  • a preferable embodiment of a downward blow type evaporative condenser 300 according to the present invention which the only difference from a upward flow type embodiment as shown in Fig. 4 and Fig. 4A is that the direction of the wind flow is reversed blown downwardly from the fans 303 in the openings at atop of the casing 210 and to exhaust the heat and moisture from the shutters 205, therefore a coil set 301 of streamline tubes is also in a reversed form with a large head portion of streamline tube upwardly to against the downward wind flow; a plurality of water-fog spray nozzles 302 disposed on an upside over the coil set 301 under the fans 303, and a gas-water separating layer 304 disposed under the coil set 301 to separate and cooling the residual water to the collecting pan 206 of a recycling system as aforesaid description to Fig.4 and Fig.4A.
  • FIG.6 Another preferable embodiment of the present invention having a large size coil set 201, which a plurality of additional water-fog spray nozzles 202 are inserted into the intervals between the layers of coil tube of a coil set 201 to increase the efficiency of evaporation by spray proper water film onto the surface of streamline tube therefore.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP03256937A 2003-11-03 2003-11-03 Verdampfungskondensator ohne Kühlrippen Withdrawn EP1528345A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03256937A EP1528345A1 (de) 2003-11-03 2003-11-03 Verdampfungskondensator ohne Kühlrippen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03256937A EP1528345A1 (de) 2003-11-03 2003-11-03 Verdampfungskondensator ohne Kühlrippen

Publications (1)

Publication Number Publication Date
EP1528345A1 true EP1528345A1 (de) 2005-05-04

Family

ID=34400581

Family Applications (1)

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EP03256937A Withdrawn EP1528345A1 (de) 2003-11-03 2003-11-03 Verdampfungskondensator ohne Kühlrippen

Country Status (1)

Country Link
EP (1) EP1528345A1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7673468B2 (en) 2006-09-26 2010-03-09 Delphi Technologies, Inc. High efficiency evaporatively cooled condenser
CN103148644A (zh) * 2013-03-22 2013-06-12 郭永 微通道降膜蒸发式冷凝器
CN107843124A (zh) * 2017-11-01 2018-03-27 杭州国能汽轮工程有限公司 混合式空冷凝汽器管束及使用该混合式管束的空冷凝汽器
CN108680046A (zh) * 2018-04-17 2018-10-19 燕山大学 涡量强化喷淋式换热器
CN110735307A (zh) * 2018-07-19 2020-01-31 青岛海尔滚筒洗衣机有限公司 一种蒸发器组件及干衣机
CN114322374A (zh) * 2021-12-30 2022-04-12 南京恒标斯瑞冷冻机械制造有限公司 一种高效节能型蒸发式冷凝器及换热方法
CN117232286A (zh) * 2023-11-10 2023-12-15 浙江嘉诚动能科技股份有限公司 一种智能鼓风式冷凝器及其使用方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1427159A (en) * 1921-02-28 1922-08-29 Hugh Reid Air-cooled or evaporative surface condenser
US3111168A (en) * 1954-11-24 1963-11-19 Huet Andre Heat exchangers
US3885936A (en) 1972-03-01 1975-05-27 Lund Basil Gilbert Alfred Heat exchangers
US4440698A (en) * 1980-11-10 1984-04-03 Ivan Bloomer Apparatus for ensuring heat exchange between a gas flow and a heat exchanger
JPS6396490A (ja) 1986-10-13 1988-04-27 Ishikawajima Harima Heavy Ind Co Ltd 熱交換器
EP0272766A1 (de) * 1986-12-02 1988-06-29 Evapco International, Inc. Zusammenstellung aus elliptischen Rohrschlangen für Evaporationswärmetauscher
US5787722A (en) * 1991-10-07 1998-08-04 Jenkins; Robert E. Heat exchange unit

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1427159A (en) * 1921-02-28 1922-08-29 Hugh Reid Air-cooled or evaporative surface condenser
US3111168A (en) * 1954-11-24 1963-11-19 Huet Andre Heat exchangers
US3885936A (en) 1972-03-01 1975-05-27 Lund Basil Gilbert Alfred Heat exchangers
US4440698A (en) * 1980-11-10 1984-04-03 Ivan Bloomer Apparatus for ensuring heat exchange between a gas flow and a heat exchanger
JPS6396490A (ja) 1986-10-13 1988-04-27 Ishikawajima Harima Heavy Ind Co Ltd 熱交換器
EP0272766A1 (de) * 1986-12-02 1988-06-29 Evapco International, Inc. Zusammenstellung aus elliptischen Rohrschlangen für Evaporationswärmetauscher
US5787722A (en) * 1991-10-07 1998-08-04 Jenkins; Robert E. Heat exchange unit

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7673468B2 (en) 2006-09-26 2010-03-09 Delphi Technologies, Inc. High efficiency evaporatively cooled condenser
CN103148644A (zh) * 2013-03-22 2013-06-12 郭永 微通道降膜蒸发式冷凝器
CN103148644B (zh) * 2013-03-22 2015-12-16 郭永 微通道降膜蒸发式冷凝器
CN107843124A (zh) * 2017-11-01 2018-03-27 杭州国能汽轮工程有限公司 混合式空冷凝汽器管束及使用该混合式管束的空冷凝汽器
CN108680046A (zh) * 2018-04-17 2018-10-19 燕山大学 涡量强化喷淋式换热器
CN110735307A (zh) * 2018-07-19 2020-01-31 青岛海尔滚筒洗衣机有限公司 一种蒸发器组件及干衣机
CN110735307B (zh) * 2018-07-19 2023-08-18 青岛海尔洗涤电器有限公司 一种蒸发器组件及干衣机
CN114322374A (zh) * 2021-12-30 2022-04-12 南京恒标斯瑞冷冻机械制造有限公司 一种高效节能型蒸发式冷凝器及换热方法
CN117232286A (zh) * 2023-11-10 2023-12-15 浙江嘉诚动能科技股份有限公司 一种智能鼓风式冷凝器及其使用方法
CN117232286B (zh) * 2023-11-10 2024-02-09 浙江嘉诚动能科技股份有限公司 一种智能鼓风式冷凝器及其使用方法

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