WO2013165787A1 - Échangeur de chaleur - Google Patents

Échangeur de chaleur Download PDF

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Publication number
WO2013165787A1
WO2013165787A1 PCT/US2013/038095 US2013038095W WO2013165787A1 WO 2013165787 A1 WO2013165787 A1 WO 2013165787A1 US 2013038095 W US2013038095 W US 2013038095W WO 2013165787 A1 WO2013165787 A1 WO 2013165787A1
Authority
WO
WIPO (PCT)
Prior art keywords
tubes
heat exchanger
heat
duct
air flow
Prior art date
Application number
PCT/US2013/038095
Other languages
English (en)
Inventor
Roger Scott TELVICK
Original Assignee
The Procter & Gamble Company
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 The Procter & Gamble Company filed Critical The Procter & Gamble Company
Priority to EP13724047.9A priority Critical patent/EP2844946A1/fr
Priority to MX2014011533A priority patent/MX2014011533A/es
Priority to CA2872276A priority patent/CA2872276A1/fr
Publication of WO2013165787A1 publication Critical patent/WO2013165787A1/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/20—Waste heat recovery
    • 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
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • F28D7/1615—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation the conduits being inside a casing and extending at an angle to the longitudinal axis of the casing; the conduits crossing the conduit for the other heat exchange medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F17/00—Removing ice or water from heat-exchange apparatus
    • F28F17/005—Means for draining condensates from heat exchangers, e.g. from evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G1/00—Non-rotary, e.g. reciprocated, appliances
    • F28G1/16—Non-rotary, e.g. reciprocated, appliances using jets of fluid for removing debris
    • F28G1/166—Non-rotary, e.g. reciprocated, appliances using jets of fluid for removing debris from external surfaces of heat exchange conduits

Definitions

  • the present disclosure is related to energy conservation and global sustainability by recycling exhaust heat from a manufacturing operation. More particularly, the present disclosure relates to a heat exchanger suitable for use in the recycling and reclaiming of exhaust heat from the drying section of a papermaking machine and process.
  • Disposable paper products such as facial tissue, sanitary tissue, paper towels, and the like are typically made from one or more webs of paper.
  • Processes for the manufacture of disposable paper products can vary, but generally involve the preparation of aqueous dispersion of papermaking fibers.
  • the aqueous dispersion is deposited on a Fourdrinier wire to form an embryonic web of papermaking fibers on the wire.
  • the Fourdrinier wire and embryonic web can then be transferred to a through air drying belt.
  • the resulting web of cellulosic fibers is then brought into contact with various drying cylinders including a Yankee drying drum, and preferably impressed thereagainst.
  • the tissue is then dried to the desired moisture level on the Yankee drying drum and removed therefrom.
  • thermoenergy produced during the paper drying process for use.
  • any energy exhausted to the atmosphere lowers the profitability of the process.
  • the quantity of waste heat generated can be as high as 2,000 kWh of energy per one ton of pulp produced and used. It is therefore appreciated that a large amount of thermal energy is wasted during the course of the drying process and such energy leaves in the form of the steam and/or moist air created during the process.
  • there have been attempts to recover such heat in various types of recovery systems where the atmospheric steam generated during this process is utilized to provide heat in various other situations.
  • such heat recovery systems utilize the steam as a remote heating source for housing developments, for heat ventilation air and/or sanitary water, as well as to preheat combustion and/or drying air of a paper manufacturing machine.
  • heat exchangers such as plate heat exchangers and tubular heat exchangers can be used.
  • a plate structure forms two systems of ducts perpendicular to one another. A medium that delivers heat flows in one set of ducts and a medium that receives heat flows in the other set of ducts. The heated receiving medium is then further processed for reuse.
  • Tubular heat exchangers are generally provided with a supply of steam or water, and the tubes are surrounded by ribs or equivalent so as to increase the heat exchange area.
  • the tubes are typically fitted between a plate structure, and water flow in the ducts formed by the plate structure, for example glycol water.
  • Another form of heat recovery system provides a heat exchanger where an air flow that is moist, saturated, or near its saturation curve is arranged to be used as the air flow that delivers heat.
  • the air flow that delivers heat is arranged to flow inside vertically oriented tubes substantially from a top of each tube toward a bottom of each tube.
  • the air flow that receives heat is arranged to flow in a direction substantially horizontally through gaps between the tubes. In this manner, any condensate coming from the moist air flow that delivers heat in the tubes flows downward along the inner walls of the tubes and is collected in a basin positioned within the duct work of the heat exchanger below the bottom of the tubes.
  • such a system is severely flawed.
  • the present disclosure provides for a heat exchanger.
  • the heat exchanger generally comprises a duct and a plurality of substantially parallel tubes, each having an outer wall and arranged in said duct to define gaps therebetween.
  • the heat exchanger also comprises first means for directing an air flow through said duct that delivers heat through the gaps and over said outer walls of said tubes and second means for directing an air flow that receives heat through said tubes;.
  • the air flow that delivers heat generally comprises air that is moist, saturated, or near its saturation curve.
  • the heat exchanger also comprises collecting means arranged in the duct for collecting the condensate flowing along the outer walls of the tubes upon exiting from the duct at the outlet.
  • FIG. 1 is a block diagram of an exemplary but non-limiting energy recovery process of the present disclosure
  • FIG. 2 is a plan view of an exemplary but non-limiting heat exchanger suitable for use with the energy recovery process of the present disclosure
  • FIG. 3A is a cross-sectional view of the exemplary but non-limiting heat exchanger of FIG. 2 taken at line 3 A, 3B - 3 A, 3B; and,
  • FIG. 3B is another cross- sectional view of the exemplary but non-limiting heat exchanger of FIG. 2 taken at line 3A, 3B - 3A, 3B showing the spray system in operation.
  • the exemplary and non-limiting energy recovery process 10 shown can generally receive a waste heat energy stream 12 in the form of steam, hot air exhaust, moisture laden heated air, particle and/or fiber laden heat exhaust, and the like.
  • a waste heat energy stream 12 in the form of steam, hot air exhaust, moisture laden heated air, particle and/or fiber laden heat exhaust, and the like.
  • any manufacturing process that takes an air stream, supplies heat energy to the stream to accomplish a task and then vents the exhaust is suitable for use with the process and apparatus of the present disclosure.
  • Some exemplary manufacturing process utilizing such processes are herein described.
  • the radiant heat emitted from a circuit board manufacturing process can be utilized to provide ambient heating to other locations within the manufacturing operation during cool weather seasons.
  • a product such as a continuous web of textile or paper product is generally dried by passing the web substrate over a plurality of sequential heated rotary cylinders.
  • These cylinders are generally heated internally by means of supplied steam or externally by large gas-fired burners.
  • the hot exhaust gasses and/or waste energy stream resulting from the drying process are usually dissipated in the surrounding atmosphere.
  • Significant energy is required to extract the water residing within the paper product. This is even more evident when it is understood that these web materials are typically manufactured to be about 10 feet wide and are subject to manufacturing speeds of such drying operations typically ranging from 3,000 to 5,000 feet per minute. This requires the webs to be dried very quickly as the final drying stages of typical paper manufacturing operations provide a final product that has about 3% moisture content.
  • the energy recovery process 10 envisions several process steps and non- limiting options suitable for use with the described energy recovery process 10. If the waste heat energy stream 12 is in the form of hot and dry exhaust gas, a step to determine if additional moisture should be added to the waste heat energy stream 12 can be provided. This step is represented in FIG. 1 as 14. In a situation where the waste heat energy is not saturated, and it has been determined that moisture should be added, one selects "yes" on the decision point. Alternatively, if the waste heat energy stream 12 is in the form of steam, then additional saturation may not be required, this can result in the selection of "no" on the decision point.
  • waste heat energy stream 12 to be treated be saturated. Without desiring to be bound by theory, it would be readily appreciated by one of skill in the art that saturation of the waste heat energy stream 12 can enable and enhance latent heat transfer. Naturally, it should be understood by one of skill in the art that if a decision is made to not saturate waste heat energy stream 12, the herein described equipment and process is still suitable for use. The use or non-use of a saturated waste heat energy stream 12 should not be considered as limiting the scope of the invention disclosed herein. Furthermore, the terms "saturated waste heat energy stream 12" and "waste heat energy stream 12" are used interchangeably herein without effect on the overall disclosure or the equipment described herein.
  • the now saturated or unsaturated waste heat energy stream 12 can then be routed to a unique heat exchanger 16.
  • the heat exchanger 16 is shown in detail in FIGS. 2, 3 A, and 3B.
  • the saturated waste heat energy stream 12 is passed in accordance with the crossflow principle through the heat exchanger 16.
  • the heat exchanger 16 preferably includes means for directing the saturated waste heat energy stream 12 into and through the heat exchanger 16 (e.g., fans, make-up air, etc) as may be required.
  • the heat exchanger 16 also preferably comprises a number of tubes 32 over which the saturated waste heat energy stream 12 is passed (i.e., external to tubes 32).
  • Fresh air 34 (e.g., clean and uncontaminated) to be heated by the saturated or unsaturated waste heat energy stream 12 can be passed through each of the tubes 32 (i.e., internal to tubes 32). Without desiring to be bound by theory, contact of the saturated waste heat energy stream 12 with the external surface of each of the tubes 32 imparts heat energy to each of the tubes 32. This heat energy is then transferred to the cool fresh air 34 passing through the tubes which can then be recycled in to the manufacturing or other production/use stream.
  • cooling of the saturated waste heat energy stream 12 with the external surface of the tubes 32 caused by a loss of energy upon contact with the tubes 32 can cause any moisture contained within the saturated waste heat energy stream 12 to condense. This condensate can then be collected and also recycled into the manufacturing process or any other production/use stream.
  • heat exchanger 16 preferably consists of a series of tubes 32 containing the fresh air 34 passed therethrough that are to be heated by the saturated waste heat energy stream 12.
  • the saturated waste heat energy stream 12 flows over the tubes 32 that are to be heated to provide the heat required to heat the fresh air 34 contained within tubes 32.
  • the tubes 32 can be fabricated into a complete unibody construction for heat exchanger 16.
  • a set of tubes 32 comprising only a portion of the tubes 32 envisioned to provide a complete heat exchanger 16 can be manufactured as an assembly and provided, for example, as a tube bundle 44.
  • each tube bundle 44 can be fabricated as incremental, individual units containing a plurality of tubes 32 that are designed to be a portion of the total architecture of the heat exchanger 16.
  • the resulting tube bundles 44 can be arranged and interconnected as may be required by the end user into an array to form a complete heat exchanger 16.
  • the inlets and outlets of the all the tubes 32 or the respective tube bundles 44, or any portion thereof, comprising heat exchanger 16 can be in common fluid communication through a respective inlet plenum or manifold 50 and/or a respective outlet plenum or manifold 52.
  • the heat exchanger 16 can comprise several design features relating to the disposition of the tubes 32 into any required arrangement articulated infra in order to provide the design required by the user for the waste heat energy stream 12 to be treated.
  • the tube 32 material selected should preferably have good thermal conductivity for the operation and for the waste heat energy stream 12 to be treated. Because heat is transferred from a hot (outer) side to a cold (inner) side through the tubes 32, one of skill in the art will understand that there is a temperature difference through the width of the tubes 32. Because of the tendency of the tube 32 material to thermally expand differently at various temperatures, thermal stresses may occur during operation. This is in addition to any stress imparted to the tubes 32 from the pressures exerted upon the tubes 32 from the fluids (such as waste heat energy stream 12) themselves.
  • the tube 32 material also should be compatible with both the shell and tube 32 side fluids for long periods under the operating conditions (temperatures, pressures, pH, etc.) to minimize deterioration such as corrosion. All of these requirements call for careful selection of strong, thermally-conductive, corrosion-resistant, high quality tube materials, typically metals, including copper alloy, stainless steel, carbon steel, non-ferrous copper alloy, Inconel ® , nickel, Hastelloy ® , titanium, high conductivity coppers, brasses, wrought Martensitic ® stainless steel, aluminum bronzes, 90/10 aluminum bronze, 92/8 aluminum bronze, hard (wrought), 93/7 aluminum bronze, hard (wrought), 95/5 aluminum bronze, 1/2 hard (wrought), 95/5 aluminum bronze, hard (wrought), nickel iron aluminum bronze, as extruded (wrought), combinations thereof, and the like. Further, tubes 32 can be provided in several non-limiting types including plain, longitudinally finned, radially finned, extruded, rolled, seamed, and the like.
  • tube 32 length should be considered in order to make the heat exchanger 16 as long as physically possible whilst not exceeding production capabilities. Additionally, one of skill in the art will appreciate that it is practical to ensure that the tube 32 pitch (i.e., the center-center distance of adjoining tubes 32) is not less than 1.25 times the outside diameter of the tube 32. However, one of skill in the art could use any tube pitch desired to provide the desired air flow and transfer necessary to optimize the performance of heat exchanger 16 for the waste heat energy stream 12 used. Further, it should be understood that the use of corrugated tubes 32 can increase the turbulence of the fluids involved. Without desiring to be bound by theory, it is believed that turbulence can increase heat transfer and provide better performance.
  • tubes 32 can be provided in any orientation, spacing, and the like to suit the waste heat energy stream 12 to be treated. Further, one of skill in the art should consider the positioning of tubes 32 within the heat exchanger 16. There are four main types of tube layout, which are, triangular (30°), rotated triangular (60°), square (90°) and rotated square (45°). It was found, and one of skill in the art will no doubt appreciate, that triangular patterns may give greater heat transfer as they force the fluid to flow in a more turbulent fashion around the tubes 32. One of skill in the art will appreciate that square patterns can be employed where high fouling is experienced and cleaning is more regular.
  • the heat exchanger 16 can be thought of as two fluid streams that are thermally connected (e.g., saturated waste heat energy stream 12 and cool fresh air 34). Let the fluid streams be of equal length, L, with a heat capacity (energy per unit mass per unit change in temperature) and let the mass flow rate of the fluids through the heat exchanger 16 be (mass per unit time), where the subscript i applies to saturated waste heat energy stream 12 and cool fresh air 34.
  • the temperature profiles for the fluid streams can be represented as T ⁇ x) and T 2 (x) where x is the distance in the tube.
  • T ⁇ x the temperature profiles for the fluid streams
  • T 2 (x) the temperature profiles for the fluid streams
  • u ; (x) is the thermal energy per unit length and ⁇ is the thermal connection constant per unit length between the two tubes. This change in internal energy results in a change in the temperature of the fluid element.
  • the time rate of change for the fluid element being carried along by the flow is:
  • the quantity 2 " “ 1 1 is known as the "log mean temperature difference" and is a measure of the effectiveness of the heat exchanger in transferring heat energy.
  • the heat exchanger of the present invention can be made profitable with as low as 40% thermal efficiency, provided the costs of construction are reasonable.
  • the heat exchanger of the present invention would provide an efficiency of greater than 50%, or greater than 60%, or greater than 80%, or greater than 90%.
  • even lower thermal efficiency payouts may be possible with longer project life analysis or even lower cost construction methods.
  • saturated waste heat energy stream 12 is passed through gaps defined between the tubes 32.
  • the saturated waste heat energy stream 12 passes through the heat exchanger 16 in a direction that is generally orthogonal to the longitudinal axis of tubes 32 and the air flow occurring therein. cross flow to the cold, dry air stream,.
  • any water condensed in the heat exchanger 16 from waste heat energy stream 12 flows into a basin 18. From the basin 18, any condensed water removed from the saturated waste heat energy stream 12 can be recirculated. By way of non-limiting example, this recirculation can be directed toward a spraying system 20 used for providing water to enable saturation of an unsaturated waste heat energy stream 12 prior to entry of the waste heat energy stream 12 into the heat exchanger 16. Additionally, any condensed water removed from the saturated waste heat energy stream 12 can be used for re-introduction into various portions of the papermaking process and systems communicatingly associated thereto 22.
  • clean water can be provided for input into the initial stages of the papermaking process, such as the pulper as well as other systems associated with the preparation of pulp for the production of paper products.
  • clean recycled water can be provided for input into a steam generation system used to generate the steam necessary for the various drying stages of the papermaking process.
  • this heated water can be filtered and input into a potable or unpotable water supply stream.
  • the clean recycled water can be provided for input into the heat exchanger 16 to provide a cleaning benefit to the external surfaces of the tubes 32 disposed within the heat exchanger 16 used in the heat exchanging process described herein.
  • a cleaning benefit can be realized by the incorporation of spray system 40.
  • An exemplary spray system 40 can incorporate a pump or an equivalent actuator for passing the flow of water into the nozzles of spray system 40.
  • Spray system 40 was surprisingly found to provide excellent cleaning abilities inasmuch as any particulate matter residing within the saturated waste heat energy stream 12 will tend to bind upon the outer surface of tubes 32 comprising heat exchanger 32.
  • the efficiency of heat exchanger 16 is dependent upon the most efficient transfer of thermal energy from the saturated waste heat energy stream 12 disposed upon the outside of tubes 32 to the fresh air 34 disposed within tubes 32.
  • the deposition of particulate matter or any other contaminant upon the outer surface of tube 32 can impact the heat transfer and ultimately the efficiency of the heat exchanger 32.
  • Providing a spray system 40 that effectively washes particulate matter from the outer surface of tube 32 can be reasonably assumed to assist in maintaining optimal heat transfer and optimal efficiency of heat exchanger 16.
  • any particulate matter residing in the saturated waste heat energy stream 12 does not have the opportunity to become impacted upon the inner surface of tube 32 resulting in a difficult, if not nearly impossible, cleaning task.
  • Such a system would likely require a complete disassembly of the system in order to effect any cleaning process.
  • Any particulate deposition upon the outer surface of tubes 32 is more readily removable than impacted particulate matter disposed within a tube 32.
  • the cooled flow of exhaust air from waste heat energy stream 12 may still contain moisture droplets even after waste heat energy stream 12 has passed through the heat exchanger 16.
  • the remaining waste heat energy stream 12 can be passed through a drop trap disposed in a supplied exhaust duct.
  • the saturated waste heat energy stream 12 is preferably introduced into the top portion of the heat exchanger 16. After this, the saturated waste heat energy stream 12 passes through the heat exchanger 16 and any condensate falls mostly onto the bottom of the heat exchanger 16.
  • This condensate can be removed through an exhaust duct, or it can be recirculated to be used again in spraying system 20 for further saturation of the incoming waste heat energy stream 12 or it can be used in spray system 40 for cleaning the outer surfaces of the tubes 32 of heat exchanger 16, and the like.
  • any condensate retrieved by heat exchanger 16 would likely be passed into appropriate ducting in which there is a pump or an equivalent actuator for passing the flow of water into the spray system 20 or spray system 40. Since a large quantity of water is employed in the arrangement of the present invention in the heat exchanger 16, it is easy to keep the heat exchanger 16 clean, in which case it does not require a large amount of cleaning, which also provides the advantage that the exhaust side of heat exchanger 16 is not readily blocked.
  • the heat exchanger in accordance with the present disclosure is suitable for use as a heat exchanger to provide clean and heated exhaust air 42.
  • clean and heated exhaust air 42 can be used to provide pre-heated replacement air for a paper machine or for any other application of recovery of heat.
  • a route for the recovered clean and heated exhaust air 42 can be selected by diverter 24.
  • clean and heated exhaust air 42 can be routed by diverter 24 to provide pre-heated replacement air for a paper machine as discussed supra.
  • clean and heated exhaust air 42 can be used for climate control within the manufacturing facility or other related operations in the form of heated room air. In the event of a malfunction, maintenance, any exigent circumstance, and the like, clean and heated exhaust air 42 can alternatively be vented to the atmosphere.
  • the heat exchanger 16 in accordance with the invention can be used highly advantageously in process outlets at paper, pulp and board machines, in particular in the process outlets of a dryer section of such machines.
  • the present invention when the present invention is applied to paper mills utilizing several paper machines, a favorable situation can be obtained whereby substantial thermal recovery is achieved.
  • the present invention provides both a technically and economically feasible solution for recovering and re-utilizing large quantities of heat and other energy generated during paper production in order to dry paper. It is based upon the idea that the pressure of the steam need only be raised as is required. As a result, the arrangement can be made even more practical by connecting it together with an additional steam generating system, such as the back pressure power station described.
  • the heat exchanger 16, diverter 24, and basin 18 may be constructed as an integral unit or as separate units, as described.
  • several parallel vaporizers can be utilized to produce steam at different pressures. Each of them may then be fed into a surface steam feeding group of the papermaking machine dryer section without the need for raising the pressure and preferably without lowering the pressure.
  • such a system can be used to increase dry hot air temperature for use in through air drying.

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

Abstract

La présente invention porte sur un échangeur de chaleur. L'échangeur de chaleur comprend de façon générale un conduit et des tubes sensiblement parallèles ayant une paroi externe et disposés dans le conduit afin de définir des espaces entre ceux-ci. Un écoulement d'air est dirigé à travers le conduit de façon à délivrer de la chaleur à travers les espaces et sur les parois externes des tubes. Des seconds moyens dirigent un écoulement d'air qui reçoit de la chaleur à travers les tubes. L'écoulement d'air qui délivre de la chaleur comprend de façon générale de l'air qui est humide, saturé ou proche de sa courbe de saturation. L'échangeur de chaleur comprend également des moyens de collecte disposés dans le conduit pour collecter le condensat s'écoulant le long des parois externes des tubes lors de la sortie à partir du conduit au niveau de la sortie.
PCT/US2013/038095 2012-04-30 2013-04-25 Échangeur de chaleur WO2013165787A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP13724047.9A EP2844946A1 (fr) 2012-04-30 2013-04-25 Échangeur de chaleur
MX2014011533A MX2014011533A (es) 2012-04-30 2013-04-25 Intercambiador de calor.
CA2872276A CA2872276A1 (fr) 2012-04-30 2013-04-25 Echangeur de chaleur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13/459,355 2012-04-30
US13/459,355 US20130284402A1 (en) 2012-04-30 2012-04-30 Heat exchanger

Publications (1)

Publication Number Publication Date
WO2013165787A1 true WO2013165787A1 (fr) 2013-11-07

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Application Number Title Priority Date Filing Date
PCT/US2013/038095 WO2013165787A1 (fr) 2012-04-30 2013-04-25 Échangeur de chaleur

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Country Link
US (1) US20130284402A1 (fr)
EP (1) EP2844946A1 (fr)
CA (1) CA2872276A1 (fr)
MX (1) MX2014011533A (fr)
WO (1) WO2013165787A1 (fr)

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CN104793495A (zh) * 2015-04-15 2015-07-22 浙江工业大学 一种包含非等温相变流体的换热网络最大热回收潜力的确定方法

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EP0962734A2 (fr) * 1998-06-02 1999-12-08 Electric Boat Corporation Echangeur de chaleur
US20100108301A1 (en) * 2008-11-03 2010-05-06 Mitsubishi Heavy Industries, Ltd. Method for cooling a humid gas and a device for the same

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Publication number Publication date
EP2844946A1 (fr) 2015-03-11
US20130284402A1 (en) 2013-10-31
CA2872276A1 (fr) 2013-11-07
MX2014011533A (es) 2015-01-16

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