EP2764300A2 - Structure d'adsorption et module pour pompe à chaleur - Google Patents

Structure d'adsorption et module pour pompe à chaleur

Info

Publication number
EP2764300A2
EP2764300A2 EP12737286.0A EP12737286A EP2764300A2 EP 2764300 A2 EP2764300 A2 EP 2764300A2 EP 12737286 A EP12737286 A EP 12737286A EP 2764300 A2 EP2764300 A2 EP 2764300A2
Authority
EP
European Patent Office
Prior art keywords
tube
structure according
adsorber
adsorber structure
tubes
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Withdrawn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
EP12737286.0A
Other languages
German (de)
English (en)
Inventor
Roland Burk
Hans-Heinrich Angermann
Thomas Schiehlen
Eberhard Zwittig
Steffen Thiele
Thomas Wolff
Holger Schroth
Stefan Felber
Steffen Brunner
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.)
Mahle International GmbH
Mahle Behr GmbH and Co KG
Original Assignee
Behr GmbH and Co KG
Mahle International GmbH
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 Behr GmbH and Co KG, Mahle International GmbH filed Critical Behr GmbH and Co KG
Publication of EP2764300A2 publication Critical patent/EP2764300A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B17/00—Sorption machines, plants or systems, operating intermittently, e.g. absorption or adsorption type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B17/00—Sorption machines, plants or systems, operating intermittently, e.g. absorption or adsorption type
    • F25B17/08—Sorption machines, plants or systems, operating intermittently, e.g. absorption or adsorption type the absorbent or adsorbent being a solid, e.g. salt
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B37/00—Absorbers; Adsorbers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/62—Absorption based systems

Definitions

  • the invention relates to an adsorber structure according to the preamble of réelles 1 and a module with an adsorber structure according to the invention and a shaped body with an adsorbent.
  • WO 2010/1 12433 A2 describes a heat pump which has stacks of hollow elements, in each of which an adsorption-desorption zone and a condensation-evaporation zone are arranged.
  • the hollow elements are each filled with a 'working fluid, which is displaceable between the two areas.
  • An adsorbent is applied to sheets having passages for passage of pipes. It is the object of the invention to provide an adsorber structure for a heat pump, which can be used particularly effectively.
  • An immediate adjoining within the meaning of the invention is to be understood as the geometrically direct abutment of the moldings on the shape of the pipes.
  • one or more further layers may be present between a bearing material of the tube walls and the shaped bodies, for example adhesive, heat conduction, a corrosion protection layer and / or another coating, e.g. for the purpose of soldering.
  • a preferred but not necessary working medium for adsorption and desorption is methanol.
  • the adsorbent is advantageously based on activated carbon.
  • the shaped body has a thickness of at least about 1 mm, preferably at least about 2 mm.
  • Such relatively large thicknesses allow a high space utilization with sorptionsdonem material with still acceptable effectiveness of the forest.
  • An upper limit for the thicknesses of the shaped body structures in this sense is advantageously about 10 mm and more preferably about 6 mm.
  • a possible embodiment of the invention provides that the shaped body is connected to the pipe wall by means of a preferably elastic adhesive layer. More preferably, the adhesive has a silicone base which provides good elasticity while maintaining high heat resistance and chemical resistance. In another preferred Embodiment can also be used polysulfone-based adhesives.
  • the adhesive layer also has additives to increase the thermal conductivity. It may be exemplified by boron nitride and / or finely ground, graphite and / or carbon black.
  • the thickness of the adhesive layer is ⁇ 0.5 mm, preferably s 0.3 mm and particularly preferably 5 0.2 mm.
  • the adhesive layer preferably has an at least short-term temperature stability of about 250 ° C, so that at least one complete Adsorberdesorption, for example in the course of a first installation »is possible.
  • a permanent resistance of the adhesive layer to the working agent, in particular methanol, is given up to at least about 130 ° C.
  • the adhesive layer is preferably selected such that an elongation at break or breaking elongation of at least about 200%, preferably about 300%, is present. As a result, flaking off of the molded bodies from the pipe wall is avoided in the event of larger temperature changes.
  • a cohesive fixing or bonding is dispensed with, so that different thermal expansions can be optimally compensated.
  • the kraftbeetzmannte holder causes a defined, high heat transfer.
  • At least one of the two, tubular or shaped bodies has a substantially wedge-shaped cross-section, wherein in particular at least one of the two is in a wedge-shaped direction. is held charged.
  • flat wedge angles of a few degrees are preferably selected.
  • an adsorber structure according to the invention may comprise both cohesively and purely non-positively held shaped bodies.
  • the tube ' is designed as a flat tube, wherein the shaped body preferably adjacent to broad sides of the flat tube.
  • Flat tubes are easy and inexpensive to produce and have large areas for heat transfer.
  • all known types of flat tubes are conceivable for use, for example welded and / or brazed tubes, tubes with flanged seams, snap-over tubes and / or B-type tubes.
  • the tube is designed substantially as a round tube or polygon tube, wherein the tube is embedded by two or more moldings.
  • a design allows a largely dense stacking in two spatial directions, which is the utilization of space especially accommodating.
  • the molded bodies embedding the pipe have an overall polygonal, in particular hexagonal outer contour, so that a substantially geometrically dense stacking can be achieved.
  • the shaped bodies are essentially plate-shaped, wherein they each have a plurality of indentations for partially enclosing a plurality of the tubes. In this way, a good use of space can be achieved with a few items.
  • the shaped body has a recess which at least partially forms a vapor channel for the adsorption agent and / or a predetermined breaking point of the shaped body. So is also in a spatially dichotomous th arrangement of adjacent moldings given an effective supply and discharge of the working fluid through the channels.
  • the alternative or complementary function as a predetermined breaking point allows a defined breaking, for example, due to a locally too high thermal expansion, 5 the mechanical and thermal integrity of the overall structure is maintained and the function is by newly formed micro-flow channels and access surfaces of work equipment in or out the adsorber improved. It is also possible to break the predetermined breaking point before operation in order to open further diffusion paths of the working medium into the adsorbing structure.
  • the tube consists essentially of an iron-based alloy.
  • Such alloys are particularly robust against many working fluids, especially methanol.
  • work equipment such as water, however, aluminum-based materials are also an option.
  • the tube consists of a ferritic stainless steel (low expansion coefficient) and / or a tinned ferritic stainless steel. It can also consist of 20 tinned stainless steel or steel, such as inexpensive tinplate. Another variant is to use galvanized base material, in particular galvanized steel. It is also possible, low-alloy stainless steel or steel, such as. To use DC03. Both latter materials are resistant to dry methanol.
  • When designed as a flat tube is preferably a hydraulic diameter of less than about 5 mm, preferably in the range between 1 mm and 2 mm, before.
  • the wall thicknesses of the flat tubes are advantageously in the range of 0.1 mm to 1 mm, preferably between 0.2 and 0.4 mm. When trained as a round tube, these preferably have a diameter in the range between 4 mm and 6 mm.
  • the round tube advantageously have wall thicknesses in the range between 0.05 mm and 0.5 mm and preferably between 0.1 mm and 0.3 mm
  • a module for a heat pump comprising an adsorption-desorption, wherein in the area a bundle of fluid-flowable tubes is arranged and a housing sealingly encloses the tube bundle and a working medium, which in its adsorption desorption a Adsorber Modell according to any one of claims 1 to 13 according to the invention.
  • a condensation evaporation region is additionally provided in the housing, in which a bundle of fluid-flowable tubes is arranged, wherein the working medium is displaceable between the adsorption-desorption region and the condensation evaporation region.
  • the module may be used as an adsorptive heat and / or cold storage or in a classic adsorption heat pump concept with multiple adsorption reactors but common condenser and evaporator.
  • a support structure forms a mechanical support of a wall of the housing against the effect of an external pressure.
  • a negative pressure prevails over the conversion. which makes special demands on the design of the housing.
  • the support structure By the support structure, the externally acting pressure forces can be effectively intercepted and / or distributed.
  • Such a support structure may for example be formed as a trapezoidal sheet comprising longitudinal folds which are aligned transversely to provided in a housing cover longitudinal beads.
  • Alternative detailed designs of the support structure are possible, for example as a grid, a plurality of bars, T-profiles u, ä.
  • the adsorber structures are formed as a mechanical support of the housing, which leads to a particularly high resistance to external pressure.
  • a spatially particularly dense arrangement of the moldings and tubes is utilized.
  • the housing wall of the module is preferably made of an iron-based alloy, for example steel, stainless steel, tinned or galvanized steel or the like.
  • the material may correspond to a material of the tubes, that is, when using other working medium than methanol and aluminum-based materials.
  • a support frame may be provided in the interior of the housing between the two regions and / or within one of the two regions.
  • the adsorption-desorption area occupies a greater part of the modulus than the evaporation Condensation region.
  • a molded article according to the invention with an adsorbent for a heat pump consists of a mixture comprising an adsorbent and a binder comprising a ceramic Binder includes.
  • the ceramic binder is preferably but not necessarily based on siliceous ceramics. Particularly preferred these may comprise aluminosilicates.
  • the mixture advantageously contains a powder of a sorption-active base material in a particle size in the range between 2 ⁇ m and 500 ⁇ m, preferably between 5 ⁇ m and 100 ⁇ m.
  • the sorbent-active base material may, for example, be activated carbon.
  • the mixture may contain auxiliaries for improving the heat conduction, for example expanded graphite and / or boron nitride and / or silicon carbide and / or aluminum nitride and / or a carbon black and / or metallic particles.
  • auxiliaries for improving the heat conduction for example expanded graphite and / or boron nitride and / or silicon carbide and / or aluminum nitride and / or a carbon black and / or metallic particles.
  • the additives in their sum preferably have a mass fraction based on the mass of the molding of between 5% and 50%, more preferably between 10% and 35%.
  • inorganic fibers may be added which improve the thermal conductivity and / or the mechanical stability.
  • activated carbon fibers are added, which advantageously both include a heat conduction function and / or mechanical stabilization, as well as can perform an adsorption function.
  • a production process for the shaped body according to the invention may comprise, for example, extrusion, drying and / or sintering. The sintering can be carried out under inert gas.
  • FIG. 1 shows a spatially open view of a module with adsorber structures according to the invention.
  • Fig. 2 shows the module of Fig. 1 in an exploded view.
  • FIG. 3 shows an exploded view of housing parts of the module from FIG. 1.
  • FIG. 4 shows a schematic sectional view through the module from FIG. 1, FIG.
  • Fig. 5 shows a perspective view of a first embodiment of an adsorber structure of the invention with material-locking support.
  • FIG. 6 is a sectional view through a stacked arrangement of several of the adsorber structures of FIG. 5.
  • FIG. 7 shows a three-dimensional view of adsorber structures of FIG. 5 stacked in two spatial directions.
  • 8 shows sectional views of several types of flat tubes of the adsorber structures from FIGS. 5 to 7 and a sectional view of a flat tube inserted in a tubesheet.
  • FIG. 9 shows a schematic sectional view of a further embodiment of adsorber structures with non-positive retention.
  • Fig. 10 shows a modification of the embodiment of Fig. 9 with wedge-shaped flat tubes.
  • Figure 1 1 shows a three-dimensional representation of another example of an aortic acid structure of the invention with a round tube.
  • FIG. 12 shows a stacking of adsorber structures according to FIG. 11 in two spatial directions.
  • Fig. 13 shows a plate-shaped molded body of another embodiment of an adsorber structure.
  • FIG. 14 shows a modification of the molding of FIG. 13.
  • FIG. 15 shows an adsorber structure with round tubes and shaped bodies according to FIG. 13 and FIG. 14.
  • Fig. 18 shows an applied on a flat tube ⁇ dsorber1-0 with a blind hole perforation
  • FIG. 17 shows a section through the blind-holeed adsorber structure according to FIG. 16.
  • the module shown in FIG. 1 is one of several modules of a heat pump. It comprises a housing 1 in which a first area as adsorption-desorption area 2 and a second area as condensation evaporation area 3 are arranged side by side.
  • Each of the regions 2, 3 comprises a plurality of tubes 4 (see FIGS. 5, 18, 17), in the present case flat tubes, which are arranged in two spatial directions as bundles.
  • the tubes 4 of the first region are in each case formed as an adsorber structure 5 (see Fig. 5) .
  • the broad sides of the flat tubes 4 are in each case connected in a planar manner to a shaped body 6, in the present case by adhesion
  • the shaped body 6 consists of a mixture of adsorbent
  • An adhesive layer 7 for bonding the moldings 6 to the tubes 4 comprises a silicone-based elastic adhesive.
  • moldings groove and / or blind hole-like recesses 6a, 6b are formed, which serve as steam channels 6a for the collected supply and removal of working fluid and / or predetermined breaking points 6b, avoided by the spalling of the molded body of the tube 4 with excessive thermo-mechanical stress becomes.
  • the tubes 4 are in end regions 4 a beyond the moldings 6 and open in passages 10 a of tube sheets 10th
  • the flat tubes 4 may be formed in any desired manner, for example according to FIG. 8 as a laser longitudinally welded tube, snap-over tube, B-type tube or flare tube (from left to right).
  • Fig. 9 and Fig. 10 show embodiments with flat tubes 4, in which the moldings 6 are not glued or cohesively connected, but non-positively, in this case frictionally engaged.
  • the shaped bodies are slightly wedge-shaped and the flat tubes are conventionally formed.
  • Each shaped body 6 extends over a plurality of flat tubes 4 in a depth direction. In the longitudinal direction or stacking direction, the orientations of the shaped bodies 6 alternate.
  • both the molded body 6 and the flat tubes 4 are slightly wedge-shaped.
  • a shaped body in each case extends over a flat tube, rows of flat tubes lying one behind the other in the depth direction being shown in reverse orientation.
  • the shaped bodies in FIG. 9, project over the flat tubes in the depth direction, so that the shaped bodies are held in the wedge direction by support means or elastically force-loading means (not shown).
  • support means or elastically force-loading means in each case holding members 8 are provided at the end, which support at least the end-side molded bodies with static or elastic force in this direction. At least part of the support force in the stacking direction can also be intercepted by the pipes 4 received in passages. Additional support forces may be received between the support members by straps, tie rods or the like, but this is not shown in the figures.
  • FIG. 1 1 are in place of flat tubes before round tubes 4, which may be formed polygonal depending on the modification.
  • the round tube 4 are each partially surrounded by a plurality of, in the present case two, shaped bodies 6.
  • the moldings 6 embed the tube 4 in particular total completely (except for tolerance and / or adhesive gaps), wherein they have an overall hexagonal outer contour.
  • Adsorber Modellen 5 can be stacked in dense packing in two spatial directions (see Fig. 12).
  • the preferred thickness of the shaped bodies 6 results from the average length of the heat conduction path, for which the same specifications apply to all shapes (preferably between 1 mm and 10 mm, more preferably between 2 mm and 6 mm).
  • the edges of the outer contours of the shaped bodies are rounded in a rounded manner, so that steam channels 6a are formed in each case in the stack.
  • the example according to FIGS. 11, 12 may be formed with cohesive and / or frictional connection of the shaped bodies 6 to the tubes 4.
  • the same adhesive system can be used as in the other embodiments.
  • the shaped bodies 6 are substantially plate-shaped, with each of the plates 6 having a plurality of bulges 9 for partially enclosing the tubes 4.
  • the tubes are present, but not necessary, round tubes.
  • the moldings 6 each have recesses 6a, 6b for the formation of steam channels and predetermined breaking points. It is understood that a recess 6a, 6b can also fulfill both functions at the same time. These are preferably designed and arranged either in the neutral area of the heat flow and / or as a narrow gap in the heat flow direction.
  • Fig. 15 shows an adsorber 5 »comprising a stack of a plurality of the molded bodies according to FIG. 3 and FIG. 4 with interposed rows of circular tubes 4.
  • the adsorber structures described above preferably have the following properties:
  • the tubes of the bundles are well thermally conductive connected to the moldings, with end-side projections ranging from 5 mm to 15 mm.
  • Base material Fe-based material particularly preferably ferritic stainless steel such as, for example, 1 .4509 or 1.4512; this has lower thermal expansion coefficients than austenitic stainless steels.
  • tin-plated steel tinplate
  • low-alloy steel low-alloy steel
  • galvanized base material in particular galvanized steel.
  • the flat tubes 4 (FIGS. 5 to 10) have a hydraulic diameter of ⁇ 5 mm, preferably in the range between 1 and 2 mm.
  • the wall thicknesses of the flat tubes are in the range 0.1 mm to 1 mm, preferably between 0.2 mm and 0.4 mm.
  • the round tube (FIGS. 1 1 to 15) preferably have a diameter in the range between 4 and 6 mm.
  • the round tubes 4 have wall thicknesses in the range between 0.05 mm and 0.5 mm, preferably between 0.1 mm and 0.3 mm.
  • the shaped bodies of the embodiments described above particularly preferably have features according to the following examples or are preferably prepared in the following way:
  • Powder of the sorption-active base material with a particle size in the range between 2 pm and 500 pm, preferably between 5 pm and
  • Ceramic binder based on siliceous ceramics, e.g. Magnesium silicates (example steatite), magnesium aluminum silicates (example cordierite) and aluminosilicates (examples earthenware, porcelain).
  • the proportion by weight of the ceramic binder in the molding is between 5% and 50%, more preferably between 15% and 30%.
  • Heat-conductive additives in particular expanded graphite, carbon black, BN, SiC, AlN, metallic particles and mixtures thereof in the mass fraction between 5% and 50%, preferably from 5% to 35%.
  • Foil is rolled with subsequent optional insertion of blind holes and subsequent cutting.
  • the starting mixture optionally a Porentruckner, for example in the form of powdered polymers or in the form of organic fibers added. This refers to both mentioned production variants.
  • a Porensentner for example in the form of powdered polymers or in the form of organic fibers added. This refers to both mentioned production variants.
  • the following features are preferably provided:
  • One- or two-sided groove structure with a groove spacing which correlates with the plate thickness by a factor between 0.5 and 2.
  • a groove depth that correlates with the plate thickness by a factor between 0.2 and 0.8.
  • a groove width ⁇ 1 mm, preferably ⁇ 0.5 mm.
  • the surface / volume ratio of the adsorber structure is preferably increased by at least a factor of 1.5, preferably by at least a factor of 2.
  • -Durable stability to the working medium preferably methanol, up to 130 ° C;
  • enrichment with heat-conducting auxiliaries such as BN, finely ground expanded graphite or carbon black;
  • Elongation at break (elongation at break) at room temperature is at least 300% a layer thickness of the adhesive layer is between 10 pm and 500 pm, preferably between 50 pm and 1 50 pm.
  • the heat transfer fluid flowing through the tubes 4 can be chosen as desired, but is preferably a water-propylene glycol mixture.
  • the module for a heat pump shown in FIGS. 1 to 4 has in its first region 2 preferably, but not necessarily, adsorber structures according to one of the embodiments described above.
  • any evaporation condensation structures may be arranged, but preferably structures according to the document EP 1 918 668 B1.
  • the housing 1 of the module comprises a lower housing part 1 a and an upper housing part 1 b, each having in a first direction (flow direction) embossed longitudinal beads for stiffening.
  • the housing 1 also includes the bottoms 10 with the passages 10a, in which the tubes 4 are inserted.
  • the edges of the bottoms are hermetically sealed by the two housing parts 1 a, 1 b.
  • each support structures 1 1 are provided between housing parts 1 a, 1 b and the first and second regions 2, 3 each support structures 1 1 are provided.
  • the support structures 1 1 are formed flat, in the present case as trapezoidal sheets (see in particular Fig. 2 and Fig. 3).
  • a folding of the trapezoidal sheets 1 1 is oriented perpendicular to the longitudinal beads of the housing parts 1 a, 1 b and the trapezoidal sheets are from the inside to the GeHouseteüen 1 a, 1 b. They can be fixed to the housing parts (eg dotted) or rest only with frictional engagement. Due to the crossing of the longitudinal corrugations and the folds results overall high pressure stability of the housing walls, in particular against external pressure and a good thermal decoupling between internal structures and the housing parts.
  • Another support is the stacked adsorber structure 5 in the first region. At least at operating temperatures and / or under the corresponding influence of pressure (installation with minimally necessary clearance), the molded articles 6 abut each other in the vertical and against the trapezoidal metal sheets. so that optimal support against the usually higher external pressure takes place.
  • the bottoms 10 are provided from outside with water boxes 12 made of plastic (Fig. 1), as it is known in principle from the heat exchanger construction.
  • the water boxes 12 have connections 12a for the supply and discharge of heat transfer fluid.
  • trays 10 In the trays 10 are ports 13 for filling the module with working fluid, in this case methanol provided.
  • a connection 14 is designed as a pressure relief valve with actuatable valve stamper.
  • a further support frame 15 is arranged in the module between the first region 2 and the second region 3 (FIG. 3), in order to further improve the mechanical stability, in particular in the vicinity of the second region 3.
  • the active structures for evaporation and condensation of the second region abut each other in the manner of a mechanical support.
  • Both tube bundles of the regions 2, 3 open at the end in the tube sheets 10 and are connected to them cohesively.
  • the tubesheets have the following features:
  • Low thermal conductive metal base material preferably austenitic stainless steel 1.4301 or 1.4404.
  • a thickness range of the tubesheet is between 0.3 mm and 1, 5 mm, preferably between 0.5 and 1 mm.
  • tin-plated or galvanized base materials may also be used.
  • a spacing of the tubesheet passages for thermal decoupling of the two regions 2, 3 as a function of the thermal conductivity of the tubesheets is provided (adiabatic zone 16).
  • the tubesheets 10 have integrally formed tube passages 10a and with an optional coating which is adapted to the type of tube used and the fluid-tight joining method implemented.
  • a fluid-tight tube-ground connection can be made by remote laser beam welding, characterized by:
  • a fluid-tight tube-ground connection can be achieved by soft soldering, characterized by:
  • a fluid-tight pipe-ground connection can be achieved by gluing, characterized by:
  • Adhesive joint ⁇ 0.2 mm.
  • the housing 1 of the hollow element is preferably characterized by:
  • Base material made of stainless steel preferably austenitic
  • a reinforcement by a trapezoidal sheet 1 1 with a folded edge perpendicular to the direction of the outer wall characterized by:
  • the housing halves 1 a, 1 b are welded together, the bottom housing connection is preferably carried out by welding through the upper and lower plate by laser beam deep welding;
  • the support frame 15 is arranged in the region of the adiabatic zone between the sorption zone 2 and the phase change zone 3 and is preferably characterized by:
  • connections 13, 14 for evacuation and filling preferably consist of welded to the tube sheet by means of resistance welding stainless steel nozzle. Alternatively, it can be screwed in and sealed by means of metal seal stainless steel pipe. A copper tube for squeezing and soldering is soldered.
  • the water boxes 12 are preferably made of an injection-molded and largely hydrolysis-resistant plastic inner part, preferably made of PA or PPS, comprising:
  • An optional pressing bell made of metal may have: -Blockentiefe tuned to support the inner, sealing plastic inner part;
  • FIGS. 16 and 17 show a further embodiment of tubes 4, in particular of tubes 4 of the first region, each carrying an adsorber structure 5.
  • the wide sides of the flat tubes 4 are each connected in a planar manner to a shaped body 6, in particular by gluing.
  • the molded body 6 consists of a mixture of adsorbent, in this case activated carbon and binder.
  • An adhesive layer 7 for connecting the molded bodies 6 to the tubes 4 comprises, in particular, a silicone-based elastic adhesive.
  • blind hole-like recesses 6a are formed, which serve as steam channels for the collected supply and removal of working fluid and / or predetermined breaking points, by which a chipping of the molded body is avoided by the pipe 4 with excessive thermo-mechanical stress.
  • the blind holes are regularly distributed over the molding, as aligned in rows.
  • the tubes 4 are in end regions 4 a beyond the moldings 6 and open in passages 10 a of tube sheets 10th

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Sorption Type Refrigeration Machines (AREA)

Abstract

L'invention concerne une structure d'adsorption pour une pompe à chaleur, comportant au moins un tuyau (4) traversé par un fluide caloporteur et un agent d'adsorption, un agent actif pouvant être adsorbé et désorbé sur l'agent d'adsorption et l'agent d'adsorption étant en liaison thermique avec le tuyau (4). L'agent d'adsorption est formé d'au moins un et notamment de plusieurs corps moulés (6) situés au voisinage immédiat d'une paroi d'un des tuyaux (4).
EP12737286.0A 2011-07-21 2012-07-19 Structure d'adsorption et module pour pompe à chaleur Withdrawn EP2764300A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011079581A DE102011079581A1 (de) 2011-07-21 2011-07-21 Adsorberstruktur und Modul für eine Wärmepumpe
PCT/EP2012/064167 WO2013011084A2 (fr) 2011-07-21 2012-07-19 Structure d'adsorption et module pour pompe à chaleur

Publications (1)

Publication Number Publication Date
EP2764300A2 true EP2764300A2 (fr) 2014-08-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP12737286.0A Withdrawn EP2764300A2 (fr) 2011-07-21 2012-07-19 Structure d'adsorption et module pour pompe à chaleur

Country Status (4)

Country Link
US (1) US9291374B2 (fr)
EP (1) EP2764300A2 (fr)
DE (1) DE102011079581A1 (fr)
WO (1) WO2013011084A2 (fr)

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US20140130540A1 (en) 2014-05-15
DE102011079581A1 (de) 2013-01-24
US9291374B2 (en) 2016-03-22
WO2013011084A3 (fr) 2013-05-30
WO2013011084A2 (fr) 2013-01-24

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