EP3004777A1 - Procédé et appareil de condensateur modulaire refroidi par air - Google Patents

Procédé et appareil de condensateur modulaire refroidi par air

Info

Publication number
EP3004777A1
EP3004777A1 EP14804886.1A EP14804886A EP3004777A1 EP 3004777 A1 EP3004777 A1 EP 3004777A1 EP 14804886 A EP14804886 A EP 14804886A EP 3004777 A1 EP3004777 A1 EP 3004777A1
Authority
EP
European Patent Office
Prior art keywords
method step
modular
transversal
affixed
understructure
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.)
Granted
Application number
EP14804886.1A
Other languages
German (de)
English (en)
Other versions
EP3004777B1 (fr
EP3004777A4 (fr
Inventor
Thomas Van QUICKELBERGHE
Francis Badin
Francois van RECHEM
Christophe Deleplanque
Michel Vouche
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.)
SPG Dry Cooling USA LLC
Original Assignee
SPX Cooling Technologies Inc
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 SPX Cooling Technologies Inc filed Critical SPX Cooling Technologies Inc
Publication of EP3004777A1 publication Critical patent/EP3004777A1/fr
Publication of EP3004777A4 publication Critical patent/EP3004777A4/fr
Application granted granted Critical
Publication of EP3004777B1 publication Critical patent/EP3004777B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
    • E04H5/10—Buildings forming part of cooling plants
    • E04H5/12—Cooling towers
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
    • E04H5/10—Buildings forming part of cooling plants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K5/00—Plants characterised by use of means for storing steam in an alkali to increase steam pressure, e.g. of Honigmann or Koenemann type
    • F01K5/02—Plants characterised by use of means for storing steam in an alkali to increase steam pressure, e.g. of Honigmann or Koenemann type used in regenerative installation
    • 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
    • F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
    • F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F25/00—Component parts of trickle coolers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
    • F28F9/002—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core with fastening means for other structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F2009/0285—Other particular headers or end plates
    • F28F2009/029—Other particular headers or end plates with increasing or decreasing cross-section, e.g. having conical shape
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49352—Repairing, converting, servicing or salvaging
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49636—Process for making bearing or component thereof

Definitions

  • the present invention relates to a mechanical draft cooling tower that utilizes air cooled condenser modules.
  • the aforementioned cooling tower operates by mechanical draft and achieves the exchange of heat between two fluids such as atmospheric air, ordinarily, and another fluid which is usually steam or some sort of industrial process fluid.
  • the aforementioned cooling tower operates by mechanical draft which utilizes an air current generator such as a fan or the like.
  • Cooling towers are heat exchangers of a type widely used to emanate low grade heat to the atmosphere and are typically utilized in electricity generation, air conditioning installations and the like. In a mechanical draft cooling tower for the aforementioned applications, airflow is induced or forced via an air flow generator such as a driven impeller, driven fan or the like. Cooling towers may be wet or dry. Dry cooling towers can be either "direct dry,” in which steam is directly condensed by air passing over a heat exchange medium containing the steam or an "indirect dry” type cooling towers, in which the steam first passes through a surface condenser cooled by a fluid and this warmed fluid is sent to a cooling tower heat exchanger where the fluid remains isolated from the air, similar to an automobile radiator.
  • Dry cooling has the advantage of no evaporative water losses. Both types of dry cooling towers dissipate heat by conduction and convection and both types are presently in use. Wet cooling towers provide direct air contact to a fluid being cooled. Wet cooling towers benefit from the latent heat of vaporization which provides for very efficient heat transfer but at the expense of evaporating a small percentage of the circulating fluid.
  • the condenser typically requires a large surface area to dissipate the thermal energy in the gas or steam and oftentimes may present several challenges to the design engineer. It sometimes can be difficult to efficiently and effectively direct the steam to all the inner surface areas of the condenser because of non- uniformity in the delivery of the steam due to system ducting pressure losses and velocity distribution. Therefore, uniform steam distribution is desirable in air cooled condensers and is critical for optimum performance. Another challenge or drawback is, while it is desirable to provide a large surface area, steam side pressure drop may be generated thus increasing turbine back pressure and consequently reducing efficiency of the power plant.
  • Embodiments of the present invention advantageously provides for a fluid, usually steam and method for a modular mechanical draft cooling tower for condensing said steam.
  • An embodiment of the invention includes a method for assembling a modular air cooled condenser extending along a vertical axis away from horizontal, comprising the steps of: assembling a first condenser bundle assembly having a first set of tubes having first and second ends, a steam manifold connected to the first ends of the tubes , and a condensate header connected to the second ends of the tubes ; assembling a second condenser bundle having a second set of tubes having first and second ends, a steam manifold connected to the first ends of the tubes, and a condensate header connected to the second ends of the tubes; placing the first and second condenser bundle assemblies in to a container; transporting the container to a location upon which the modular air cooled condenser will be assembled; assembling a heat exchange delta by placing the first condenser bundle and the second condenser bundle; and positioning the heat exchange delta on a modular tower frame.
  • a method for assembling a modular air cooled condenser extending along a vertical axis comprising: assembling a first condenser bundle having a first set of tubes having first and second ends and a condensate header connected to the second end of the tubes; assembling a second condenser bundle having a second set of tubes having first and second ends, and a condensate header connected to the second end of the tubes; placing the first and second condenser bundles in to a container; transporting the container to a location upon which the modular air cooled condenser will be assembled; assembling a heat exchange delta by placing using the first condenser bundle and the second condenser bundle; and positioning the heat exchange delta on a modular tower frame.
  • FIG. 1 is a top view of a power plant with heat exchanger having an air cooled condenser module in accordance with an embodiment of the present invention.
  • FIG. 2 is an elevation view of the air cooled condenser module depicted in FIG. 1 in accordance with an embodiment of the present invention.
  • FIG. 3 is a sectional view of the air cooled condenser module depicted in FIG. 1 in accordance with an embodiment of the present invention.
  • FIG. 4 is a perspective view of the air cooled condenser module depicted in FIG. 1 in accordance with an embodiment of the present invention.
  • FIG. 5 is a perspective view of a braced bay for the air cooled condenser module depicted in FIG. 1 in accordance with an embodiment of the present invention.
  • FIG. 6 is a perspective view of a duct, risers, and middle truss for the air cooled condenser module depicted in FIG. 1 in accordance with an embodiment of the present invention.
  • FIG. 7 is a perspective view of an assembled duct, risers, and middle truss for the air cooled condenser module depicted in FIG. 1 in accordance with an embodiment of the present invention.
  • FIG. 8 is a perspective view of the assembled duct, risers, and middle truss disposed on the braced bay for the air cooled condenser module depicted in FIG. 1 in accordance with an embodiment of the present invention.
  • FIG. 9 is a perspective view of transversal structures on the assembled duct, risers, and middle truss disposed on the braced bay for the air cooled condenser module depicted in FIG. 1 in accordance with an embodiment of the present invention.
  • FIG. 10 is a perspective view of a transversal truss for the air cooled condenser module depicted in FIG. 1 in accordance with an embodiment of the present invention.
  • FIG. 11 is a perspective view of the transversal truss and transversal structures on the assembled duct, risers, and middle truss disposed on the braced bay for the air cooled condenser module depicted in FIG. 1 in accordance with an embodiment of the present invention.
  • FIG. 12 is a perspective view of a longitudinal truss for the air cooled condenser module depicted in FIG. 1 in accordance with an embodiment of the present invention.
  • FIG. 13 is a perspective view of the longitudinal truss, transversal truss, and transversal structures on the assembled duct, risers, and middle truss disposed on the braced bay for the air cooled condenser module depicted in FIG. 1 in accordance with an embodiment of the present invention.
  • FIG. 14 is a perspective view of a bridge for the air cooled condenser module depicted in FIG. 1 in accordance with an embodiment of the present invention.
  • FIG. 15 is a perspective view of the bridges, longitudinal trusses, transversal trusses, and transversal structures on the assembled duct, risers, and middle truss disposed on the braced bay for the air cooled condenser module depicted in FIG. 1 in accordance with an embodiment of the present invention.
  • FIG. 16 is a perspective view of a partial placement of headers and deltas for the air cooled condenser module depicted in FIG. 1 in accordance with an embodiment of the present invention.
  • FIG. 17 is a perspective view of an air cooled condenser module in accordance with an embodiment of the present invention.
  • FIG. 18 is a schematic side view of the air cooled condenser module depicted in FIG. 1 in accordance with an embodiment of the present invention.
  • FIG. 19 is another schematic side view of the air cooled condenser module depicted in FIG. 1 in accordance with an embodiment of the present invention.
  • FIG. 20 is a perspective view of an A-type condenser configuration in accordance with an embodiment of the present invention.
  • FIG. 21 illustrates the condenser bundles in a packaged arrangement for shipping in accordance with an embodiment of the present invention.
  • FIG. 22 schematically illustrates the steps of assembly of an air cooled condenser in accordance with an embodiment of the present invention.
  • Embodiments described herein provide a heat exchange system, a support structure for an air cooled condenser ("ACC"), and a method of constructing a support structure for an ACC. As described herein, some or all of these embodiments provide substantial benefit over standard A-frame ACC. Examples of benefits over standard A-frame ACC include reduced cost of about 25%, improved constructability, higher annual output of power plant, improved cleanability due to use of motorized cleaning shuttlestandard, lower visual impact due to reduced height (26m vs. 32.6m) and reduced occupied ground area, and reduced foundations (40 columns vs 48 for A-frame ACC with equivalent output). This height reduction is due to the reduced height of the multi-deltas described herein compared to conventional A-Frame-type bundles that have longer tubes and increased overall height.
  • Specific examples of reduced cost and improved constructability include: Steam manifolds and steam condensate headers already welded on finned tube bundles in the manufacturing factory; Less total weight of steel structure ( - 25% vs A-Frame ACC); Less total weight of ducting ( - 25% vs A-Frame ACC); Reduced number of bundles ( 25% for A- Frame ACC); Fewer elements of steel structure to be assembled on site by bolting ( - 50% vs A-Frame ACC); Reduced site welding length on ducting ( - 50% vs A-frame ACC); Fewer lifting operations; Shorter construction duration; Fewer man activities at height due to more preassembly which results in improved overall safety level; Less scaffolding required; Higher proportion of piping and piping supports preassembled in the manufacturing factory on the finned tube bundles; Important proportion of assembly on site is at ground level (bolting of delta, liaison duct, ...); No cleaning ladder required; and More containerized deliveries.
  • higher annual output of power plant include: Lower back-pressure during low ambient temperature periods (e.g., below 9 °C) which results in higher power plant output during low temperature periods; and lower minimum backpressure ( 62 mbar vs 70 mbar for A-Frame ACC ) which results in higher power plant electricity production on a yearly basis ( + 0.4 % vs A-Frame ACC). More particularly, the back-pressure may be reduced because the heat exchange tubes in the bundles (described herein) may be made shorter and more numerous in comparison to an A-Frame ACC. In this manner, the total surface area may be equivalent while the velocity in the tubes is reduced.
  • FIG. 1 is a top view of a heat exchange system 10 having an air cooled condenser module 12 in accordance with an embodiment of the present invention that is suitable for use with a heat generating facility such as a power plant 14.
  • the heat exchange system 10 includes an understructure 20 to support the other elements of the heat exchange system 10 such as a supply line 22, risers 24, headers 26, top manifold 28, coils or bundles 30, fan 32 and bell housing 34.
  • a return line 36 is configured to return condensate to the power plant 14.
  • the power plant 14 In use, the power plant 14 generates heat to create steam to drive turbines to generate power in a manner generally known to those skilled in the art. After steam has passed through the turbines, the steam still retains substantial waste heat which is removed by the heat exchange system 10 and the condensate is returned via the return line 36.
  • FIG. 2 is an elevation view of the air cooled condenser module 12 depicted in FIG. 1 in accordance with an embodiment of the present invention. As shown in FIG. 2, the understructure 20 occupies a relatively small area which results in great open space below the air cooled condenser module 12.
  • FIG. 3 is a sectional view of the air cooled condenser module 12 depicted in FIG. 1 in accordance with an embodiment of the present invention.
  • the supply line 22 is depicted reducing in size as it proceeds along the air cooled condenser module 12.
  • the risers 24 channel steam from the supply line 22 to the top manifold 28 and bundles 30, the size of the supply line 22 is reduced accordingly.
  • FIG. 4 is a perspective view of the air cooled condenser module 12 depicted in FIG. 1 in accordance with an embodiment of the present invention. As shown in FIG. 4, the headers 26, top manifold 28 and bundles 30 as well as the fan 32 and bell housing have been removed for clarity to show the understructure 20. In the following FIGS. 5-16 an inventive sequence of construction for the air cooled condenser module 12 is illustrated in accordance to an embodiment.
  • a braced bay 50 is disposed a construction site for the air cooled condenser module 12 depicted in FIG. 1.
  • the braced bay 50 is configured to support one of the air cooled condenser modules 12 on four feet 52.
  • a foundation is disposed in the ground below each of the feet 52.
  • FIG. 6 is a perspective view of a duct 60, the risers 24, and a middle truss 62 for the air cooled condenser module 12 depicted in FIG. 1 in accordance with an embodiment of the present invention.
  • the risers 24 and duct 60 may be pre-assembled at a manufacturing facility and container shipped to the building site.
  • the middle truss 62 may be pre-assembled at a manufacturing facility and container shipped to the building site.
  • This and other pre-assembly described herein facilitates a reduction in labor costs and improvement in quality of construction. For example, at the production facility, welders may be protected from rain and other elements that may otherwise reduce weld quality.
  • the risers 24 may be affixed to the duct 60 after placement on the understructure 20.
  • FIG. 7 is a perspective view of an assembled duct 60, risers 24, and middle truss 62 for the air cooled condenser module 12 depicted in FIG. 1 in accordance with an embodiment of the present invention.
  • the assembly may be performed on the ground at the building site or at the manufacturing facility.
  • the assembled duct 60, risers 24, and middle truss 62 is shown disposed on the braced bay 50 for the air cooled condenser module 12 depicted in FIG. 1.
  • the assembled duct 60, risers 24, and middle truss 62 may be lifted by a crane and disposed on the braced bay 50.
  • a plurality of transversal structures 90 are disposed on the assembled duct 60, risers 24, and middle truss 62 disposed on the braced bay 50 for the air cooled condenser module 12 depicted in FIG. 1.
  • the transversal structures 90 may be welded or bolted to the braced bay 50 after being lifted by the crane.
  • FIG. 10 is a perspective view of a transversal truss 100 for the air cooled condenser module 12 depicted in FIG. 1 in accordance with an embodiment of the present invention.
  • the transversal truss 100 may be pre-assembled at a manufacturing facility and container shipped to the building site.
  • the transversal truss 100 is shown attached to the transversal structures 90 on the assembled duct 60, risers 24, and middle truss 62 disposed on the braced bay 50 for the air cooled condenser module 12 depicted in FIG. 1.
  • the transversal truss 100 may be welded or bolted to the transversal structures 90 after being lifted by the crane.
  • FIG. 12 is a perspective view of a longitudinal truss 120 for the air cooled condenser module 12 depicted in FIG. 1 in accordance with an embodiment of the present invention.
  • the longitudinal truss 120 may be pre-assembled at a manufacturing facility and container shipped to the building site.
  • the longitudinal truss 120 is shown attached to the transversal truss 100.
  • the longitudinal truss 120 may be welded or bolted to the transversal truss 100 after being lifted by the crane.
  • FIG. 14 is a perspective view of a bridge 140 for the air cooled condenser module 12 depicted in FIG. 1 in accordance with an embodiment of the present invention.
  • the bridges 140 are connected to the transversal trusses 100 on the braced bay 50.
  • the bridges 140 may be welded or bolted to the transversal truss 100 after being lifted by the crane.
  • FIG. 16 is a perspective view of a partial placement of the headers 26 disposed on the risers 24. The headers 26 are shown connected to the top manifolds 28 which supply steam to the bundles 30.
  • a delta 160 is an assembled set of top manifolds 28 and bundles 30.
  • the air cooled condenser module 12 generally includes a plenum 170, having an air current generator or fan disposed within a fan shroud or inlet bell 34 and the understructure 20 is shown in a simplified form for the sake of clarity.
  • the air cooled condenser module 12 further includes multiple A-type geometry deltas, each designated 160.
  • Each delta 160 comprises two tube bundle assemblies 30 with a series of finned tubes to conduct heat transfer. The deltas 160 will be discussed in further detail below.
  • FIGS. 18 and 19 schematic side views of the air cooled condenser module 12 are depicted.
  • the air cooled condenser employs risers 24 which are welded to the main steam duct 22.
  • the risers 24 are connected to a steam manifold 28 which operates to keep the steam flow velocity more constant.
  • This above described configuration is part the A-type condenser bundles 30 that are shipped as a unit from the factory, which will be discussed in further detail below.
  • the condenser bundles 30 are preferably welded to the risers 24 via a transition piece 26 to accommodate the geometry of the steam manifold.
  • each delta 160 is comprised of two individual heat exchange bundle assemblies 30, each having a series of finned tubes.
  • the individual tubes are approximately two (2) meters in length whereas the bundle length is approximately twelve (12) meters.
  • each bundle assembly 30 is positioned at an angle to one another to form the A-type configuration of the delta 160. While the bundle assemblies 30 may be positioned at any desired angle, they preferably are positioned at an angle approximately twenty degrees (20°) to approximately thirty degrees (30°) from vertical and approximately sixty degrees (60°) to approximately seventy degrees (70°) from horizontal. More specifically, the bundle assemblies 30 are positioned at twenty- six degrees (26°) from vertical and sixty-four degrees (64°) from horizontal.
  • each of the bundle assemblies 30 are assembled prior to shipping wherein each comprises a riser to header transition piece 202, steam manifold 204, finned tubes 206, and steam condensate headers 200.
  • the air cooled condenser design 10 has approximately five (5) times more tubes as compared to typical designs.
  • the embodiments of the current invention not only utilize five (5) times the tubes, but employ condenser tubes that are much shorter in length.
  • the steam velocity traveling through the tube bundles 30 is reduced as result of the increased number of tubes in combination with the reduced tube length, and therefore steam pressure drop within the deltas 160 is reduced, making the air cool condenser 10 more efficient.
  • turbine back pressure of an air cooled condenser or the like is limited by the maximum steam velocity in the tubes (to limit erosion) wherein the steam velocity is increasing with a decrease of back pressure (due to density of steam).
  • the steam is still maintained at the maximum allowable steam velocity but at a lower back pressure.
  • the other limitation the current delta design addresses is that the pressure at the exit of the secondary bundles cannot be less than the vacuum group capability. This pressure typically results from turbine back pressure minus the pressure drop in ducting minus the pressure drop in the tubes. Accordingly, due to the reduced pressure drop in the tubes, the allowable turbine back pressure is lower with the delta 160 design.
  • the above-described bundle design also reduces the pressure drop within the individual delta 160.
  • the heat exchange that takes place via the deltas 160 is dependent upon the heat exchange coefficient, i.e., the mean temperature difference between air and steam and the exchange surface. Due to the reduced pressure drop as previously described, the mean pressure (average between inlet pressure and exit pressure) in the exchanger is higher with the design of the current condenser configuration 12. In other words, because steam is saturated, the mean steam temperature is also higher for the same heat exchange surface resulting in increased heat exchange.
  • FIG. 21 a transport container, generally designated
  • the transport container 210 is used to transport the bundles 30, from the factory to the job site.
  • the condenser bundles 30, are manufactured and assembled at the factory with the respective steam manifold 204 and steam condensate headers 200. While five (5) bundles are illustrated positioned in the transport container, more or less individual bundles may be shipped per container depending as needed or required.
  • alternative embodiment bundles may not include a manifold prior to shipping. More specifically, in such embodiments, the tube bundles may be ship without steam manifolds 28 attached thereto. In said embodiments, the tube bundles 30 may be assembled in field to form the A-type configuration, as discussed above. However, instead of employing two steam manifolds, this alternative embodiment may employ a single steam manifold wherein the single steam manifold extends along the "apex" of the A configuration.
  • each individual bundle assembly 30 includes a plurality of finned tubes 206 along with a steam manifold 204 and steam condensate header 200.
  • the bundle assemblies 30 are pre-manufactured at the factory prior to placing the individual bundle assemblies 30 in the shipping container 210 as identified by numeral 42. The shipping containers 210 are then shipped to the erection field site.
  • the delta is assembled in the field as identified by numerals 216 and 218.
  • the bundles may be positioned at any desired angle, they preferably are positioned at an angle (y) approximately twenty degrees (20°) to approximately thirty degrees (30°) from vertical and an angle (x) approximately sixty degrees (60°) to approximately seventy degrees (70°) from horizontal. More specifically, the bundles are positioned at twenty-six degrees (26°) from vertical and sixty-four degrees (64°) from horizontal.
  • a single A-type delta is illustrated 160 formed by two bundle assemblies 30 to form the "A" configuration. The bundle assemblies 30 self support one another in this configuration.
  • the air cooled condenser module 12 as referenced by the numeral 220, it is depicted employing five deltas 160.
  • the air cooled condenser is an improvement over current air cooled condenser types and it has a high "pre- fabrication" level which equates to reduced installation cost and reduced installation time.
  • the above-described design reduces the pressure drop, thereby providing a more efficient heat exchange apparatus.
  • Tables 1 and 2 below show the number of parts utilized for a 32 module Multi-Delta and a 30 module A-Frame ACC designed for the same duty. There is a very dramatic decrease in pieces which translates in to substantially less construction labor and construction time.
  • Plenum Middle truss 1 Plenum Middle truss 1
  • transversal Horizontal girder 0 transversal Horizontal girder 0
  • Plenum Middle truss 1 Plenum Middle truss 1
  • transversal Horizontal girder 0 transversal Horizontal girder 1.5
  • A-frame Columns 6 A-frame Columns 6
  • Top girder 2 Top girder 2
  • Mini a-frame 4 Mini a-frame 4
  • transversal Columns 0 transversal Columns 0
  • Top rail 4 Top rail 4
  • Top girder 2 Top girder 2
  • Mini a-frame 2 Mini a-frame 2
  • Girders 0 Girders 0
  • Top rail 4 Top rail 4
  • Top girder 2 Top girder 2
  • Mini a-frame 2 Mini a-frame 2
  • Top rail 4 Top rail 4
  • the multidelta ACC of an embodiment disclosed herein includes less than half the parts of a comparable conventional A-Frame ACC (2125 parts verses 5148 parts). This reduction in part numbers has a corresponding reduction in labor costs, construction time, and the like.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)

Abstract

La présente invention se rapporte à une tour de refroidissement à tirage mécanique qui utilise des modules de condensateur refroidis par air. La tour de refroidissement susmentionnée fonctionne par tirage mécanique et permet l'échange de chaleur entre deux fluides tels que l'air atmosphérique, ordinairement, et un autre fluide qui est généralement de la vapeur, La tour de refroidissement susmentionnée utilise un concept de condensateur modulaire refroidi par air, les condensateurs refroidis par air utilisant des deltas d'échange thermique qui utilisent des faisceaux de tubes qui sont fabriqués et assemblés avant d'être expédiés à l'endroit où se trouve la tour.
EP14804886.1A 2013-05-28 2014-05-28 Procédé et appareil condenseur modulaire refroidi par air Active EP3004777B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201361828076P 2013-05-28 2013-05-28
PCT/US2014/039718 WO2014193916A1 (fr) 2013-05-28 2014-05-28 Procédé et appareil de condensateur modulaire refroidi par air

Publications (3)

Publication Number Publication Date
EP3004777A1 true EP3004777A1 (fr) 2016-04-13
EP3004777A4 EP3004777A4 (fr) 2016-06-22
EP3004777B1 EP3004777B1 (fr) 2017-07-26

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WO2014193916A1 (fr) 2014-12-04
CN105247314A (zh) 2016-01-13
ES2642077T3 (es) 2017-11-15
EP3004777B1 (fr) 2017-07-26
KR20160016886A (ko) 2016-02-15
EP3004777A4 (fr) 2016-06-22

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