CN1167921C - Adsorbent bed concurrent with condenser function - Google Patents

Adsorbent bed concurrent with condenser function Download PDF

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Publication number
CN1167921C
CN1167921C CNB011404361A CN01140436A CN1167921C CN 1167921 C CN1167921 C CN 1167921C CN B011404361 A CNB011404361 A CN B011404361A CN 01140436 A CN01140436 A CN 01140436A CN 1167921 C CN1167921 C CN 1167921C
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China
Prior art keywords
condenser
housing
plate
core body
adsorbent bed
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Expired - Fee Related
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CNB011404361A
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Chinese (zh)
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CN1423101A (en
Inventor
徐靖中
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Institute of Engineering Thermophysics of CAS
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Institute of Engineering Thermophysics of CAS
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Priority to CNB011404361A priority Critical patent/CN1167921C/en
Publication of CN1423101A publication Critical patent/CN1423101A/en
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    • 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

Abstract

The present invention relates to an adsorbent bed concurrent with a condenser function, which is composed of a core heat transfer unit and a shell condenser, wherein the core heat transfer unit is composed of a heat transfer fluid inlet/outlet, an end socket, heat insulating layers of asbestos rubber plates, a core end plate, a fluorine rubber sealing plate, a U-shaped pipe, a wing and an adsorbing agent coating layer on the wing; the shell condenser is composed of a water jacket composed of a shell, an inner wall surface isolation sheet and an outer wall surface semielliptic sectional coil pipe, and a liquor condensate outlet flow pipe; the end socket is a circular sectional cavity with an upper cover plate and a lower cover plate, and the middle part of the cavity is divided into two parts by a partition plate; the inner wall surfaces of the two cavities are both provided with the asbestos rubber plates; the fluorine rubber sealing plate is arranged between the lower cover plate of the end socket and the core end plate of the; the inner wall surface of the shell is provided with the partition plate, and the outer surface of the shell is used as the plane side of the coil pipe to be welded on the outer wall surface of the shell by a stainless steel thin plate. Spiral coil pipes can be in parallel connection by a plurality of pipes, and the inlets and the outlets of the spiral coil pipes are concentrated through a main collection pipe. The core heat transfer unit and the shell condenser are sealed by a fluorine rubber ring.

Description

A kind of adsorbent bed that has condenser function concurrently
Technical field
The present invention relates to a kind of adsorbent bed, relate in particular to a kind of adsorbent bed that has condenser function concurrently.
Background technology
Adsorbent bed in the solid adsorption refrigeration system carries out with the periodicity heating/type of cooling.Under the heating of the heat exchanger hot fluid of adsorbent in placing bed, desorption goes out refrigerant vapour in the bed.When refrigerant vapour pressure in the bed during greater than the condensing pressure of condenser, the vacuum valve that connects bed body and condenser is opened, and condensed steam enters condenser and forms liquid, emits condensation heat simultaneously.When adsorbent bed desorption end cycle, by switching, in the heat exchanger under the cold fluid cooling, vapour pressure descends adsorbent in bed in the bed.When refrigerant vapour in the bed forced down evaporating pressure in evaporimeter, the vacuum valve that connects bed body and evaporimeter was opened, and the liquid cryogen evaporation in the evaporimeter absorbs refrigerant fluid heat and freezes, and refrigerant vapour then is adsorbed bed absorption.
In the existing absorbing refrigeration system, adsorbent bed and condenser split.For guarantee that the refrigerant vapour that desorption goes out can not condense in adsorbent bed, adsorbent bed core body and housing must heat simultaneously, cause adsorbent bed metal material quality very big than adsorbent mass, and in other words, the mass ratio of adsorbent and metal material is very little.The heat of extraneous input also must the metal that be several times as much as adsorbent mass partly be heated, and this part heat is invalid for sorption cycle, thereby causes the decline of complete machine COP when adding heat-adsorbent.And the adsorbent bed outer surface also needs heat-insulation layer.Secondly, by the vacuum valve between adsorbent bed and the condenser, volume flow is big with steam condition for cold-producing medium, for reducing flow resistance, needs to adopt the heavy caliber vacuum valve; The 3rd, the pressure drop that refrigerant vapour causes by connecting line, vacuum valve and condenser circulating water pass the time also can make system effectiveness descend; The 4th, condenser and two big latus rectum vacuum valves of working under the vacuum condition will increase the complete machine cost considerablely, have reduced the cost performance of unit.
Summary of the invention
The object of the present invention is to provide a kind of adsorbent bed that has condenser function concurrently, can increase substantially an interior adsorbent and bed body metal quality ratio, simplified system flow, improved the reliability of vacuum system, and saved an independently condenser, replace two big latus rectum vacuum valves (walking refrigerant vapour) with two little latus rectum vacuum valves (walking condensate liquid), increased substantially the complete machine cost performance.
For achieving the above object, the adsorbent bed that has condenser function concurrently provided by the invention is made up of core body heat transfer unit and housing condenser two parts, and wherein, the core body heat transfer unit comprises:
Heat transport fluid import and export, end socket, asbestos packing sheet thermal insulation layer, core body end plate, fluorubber sealing plate, U-shaped pipe, fin and last adsorbent coating thereof;
End socket is to have the circular section cavity of cover plate up and down, is divided into two parts with dividing plate in the middle of the cavity, and a part links to each other with the heat transport fluid inlet tube, and another part links to each other with the heat transport fluid outlet, and two cavity inner wall faces all are provided with asbestos packing sheet;
Be provided with the fluorubber sealing plate between end socket lower cover and the core body end plate;
Lower cover is a porous plate, and the position in hole is corresponding with the U-shaped pipe;
Be welded seal between U-shaped pipe and the core body end plate;
The U-shaped pipe is provided with several aluminium fins that applies adsorbent layer;
The housing condenser comprises:
Water jacket, lime set outflow tube that housing, internal face barrier flaps, outside wall surface semi-elliptical cross-section coil pipe are formed;
The housing outside wall surface is the cold side of condenser, housing outer surface winding spiral coil;
Housing bottom is provided with condensate outlet;
The inner walls face is as the side of condensing of condenser, and this side surface that condenses is provided with several bafflers, and baffler is formed at internal face by the thin stainless steel substrates pressure welding that is converted into certain angle, circumferentially interlaced arrangement;
Seal by fluorine rubber ring between core body heat transfer unit and the housing condenser;
Gap after described core body end plate and end socket lower cover compress is 1mm.
Described spiral coil cross section is a half elliptic, and its flat edge is the housing outside wall surface, and the semiellipse limit is welded on the housing outside wall surface by stainless sheet steel and forms.
The thickness of described stainless sheet steel is 0.5-1mm.
Described spiral coil can be and is arranged in parallel.
The import and export of the described spiral coil that is arranged in parallel are concentrated by the lump pipe.
The distance up and down of described baffler is 30-50cm.
The diameter of the viton seal ring between described core body heat transfer unit and the housing condenser is 5-8mm.
The present invention has the following advantages:
1, adsorbent bed core body and housing heat insulation increase substantially an interior adsorbent and metal material mass ratio, and complete machine COP value can improve about 40%;
2, adsorbent bed inner walls face has shortened the refrigerant vapour flow process as the side of condensing of condenser, has avoided simultaneously, having reduced sealed interface along the journey flow resistance loss, helps improving system vacuum degree reliability;
3, the housing outside wall surface is as the condenser cold side, and cold fluid is made helical flow around housing outer surface, and both extended surface area improved the convection current side coefficient of heat transfer again;
4, the adsorbent bed housing maintains room temperature, need not to adopt the insulation measure;
5, machine system has saved an independently cooler, and replaces two big latus rectum vacuum valves with two little latus rectum vacuum valves, has improved the complete machine cost performance considerablely.
In conjunction with the accompanying drawings the present invention is described in detail with embodiment below.
Description of drawings
Fig. 1 is adsorbent bed core body of the present invention and housing heat insulation schematic diagram;
The adsorbent bed body schematic diagram that Fig. 2 combines with condenser for adsorbent bed of the present invention.
The specific embodiment
Embodiment:
Adsorbent bed body of the present invention is made up of core body heat transfer unit and housing condenser two parts, wherein, the core body heat transfer unit is by heat transport fluid inlet tube 1, outlet 2, end socket 3, asbestos packing sheet thermal insulation layer 4, core body end plate 5, fluorubber sealing plate 6, U-shaped pipe 7 be arranged on several aluminium fins 8 on the U-shaped pipe and go up the adsorbent coating and constitute; Water jacket, lime set outflow tube 12 that the housing condenser is made up of housing 9, internal face barrier flaps 10, coil pipe 11 constitute.End socket 3 is for having the circular section cavity of cover plate up and down, and lower cover 13 is a porous plate, and the position in hole is corresponding with 7 import and export of U-shaped pipe, is welded seal between U-shaped pipe 7 and the core body end plate 5.Be divided into two and half cavitys, 15,16, half cavitys 15 with dividing plate 14 in the middle of the cavity and link to each other with heat transport fluid inlet tube 1, half cavity 16 links to each other with heat transport fluid outlet 2.Two cavity 15,16 internal faces all are provided with asbestos packing sheet 4, reduce the conductive heat loss of heat transport fluid by cover plate as far as possible.Heat transport fluid enters half cavity 15 by inlet tube 1, flows into U-shaped pipe 7 by porous plate, to aluminium fin on it 8 and the adsorbent heating (or cooling) that is applied on the fin 8.Flow into second half cavity 16 from 7 outlets of U-shaped pipe then, flow out by heat transport fluid outlet 2.Between end socket lower cover 13 and the core body end plate 5 fluorubber sealing plate 6 is set, prevents to import and export 1,2 heat transport fluids (water) by the mutual seepage in slit.In the housing condenser, housing 9 internal faces are as the condensation side 20 of condenser, these condensation side 20 surfaces are provided with several bafflers 10, housing 9 internal face barrier flaps 10 are formed at internal face by several stainless steel thin slice pressure weldings that are converted into certain angle, circumferential interlaced arrangement, distance makes condensate liquid break away under the wall flow through barrier flaps 10 backs at 30-50cm up and down, prevents that liquid film from thickening.Promptly as the flat edge of coil pipe 11, the coil pipe 11 that present embodiment adopts is the semi-elliptical cross-section shape for housing 9 outer surface winding coil pipes 11, housing 9 outer surfaces, and the limit of coil pipe 11 is welded on housing 9 outside wall surface by the thick stainless sheet steel of 1mm.Flow of cooling water speed is about 1m/s in the coil pipe 11, makes coil pipe 11 interior convection transfer rates at 4000w/m 2More than ℃, to guarantee that overall heat-transfer coefficient is greater than 3000w/m 2℃.For making the coupling between cooling water flow and the flow velocity, coil pipe 11 can be in parallel by the number pipe, imports and exports by lump pipe 17,18 and concentrate.Core body heat transfer unit and housing condenser are viton seal ring 19 sealings of 5-8mm by diameter, and core body end plate 5 and end socket lower cover 13 still keep the gap more than the 1mm after compressing.Housing bottom is provided with condensate outlet 12.
The heating desorption process: hot water (85 ℃) enters in the end socket cavity from the heat transport fluid entrance point, and orifice plate flows into metal U-shaped pipe below cavity, to fin and coating sorbent material heating thereon.After adsorbent was heated, the moisture that is adsorbed in wherein came out with the steam-like desorption, riddled the low vacuum space that is made of adsorbent bed housing and core body end plate, and its initial absolute pressure is about 7mmHg.Because core body contacts by the viton seal ring line with housing, thermal resistance is very big, and about 300 seconds of heating cycle is so case temperature can be considered not heated fluid influence.Meanwhile, from the temperature of cooling tower is that cooling water about 30 ℃ enters the adsorbent bed cooling jacket that is made of housing outer surface and semi-elliptical cross-section metal coil pipe from the jacket inlet end, flow around the housing outside wall surface, and flow out, get back to cooling tower from the water jacket port of export.
Adsorbent is heated and constantly discharges water vapour, makes the pressure in the low vacuum space that the interior metal U type pipe of housing is outer improve constantly.When pressure was elevated to the saturation pressure (about 32mmHg) of cooling water temperature correspondence, water vapour discharged the heat of condensation in the condensation of inner walls face, and arrived the bottom along wall flow, was flowed out by the lime set outflow tube, behind vacuum valve, throttling arrangement, flowed back to evaporimeter.Condensation side (inner walls face) is provided with barrier flaps, prevents that condensate film thickness is blocked up and increases thermal resistance.The be cooled cooling water of side (housing outer surface) of the heat of condensation that discharges is taken away.
Cooling adsorption process: when the heating desorption process finishes, the heat transport fluid pipeline is by switching, cold water from cooling tower enters in the end socket cavity from the heat transport fluid entrance point, and orifice plate flows into metal U-shaped pipe below cavity, and fin and coating sorbent material are thereon cooled off.Adsorbent temperature descends, and adsorbent begins to adsorb the steam that riddles surrounding space.When the vapour pressure of surrounding space is lower than the evaporating pressure of evaporimeter, the vacuum valve that connects adsorbent bed and evaporimeter is opened, adsorbent absorbs the steam of flash-pot by the refrigerant vapour inlet, evaporimeter maintains evaporating state, absorbs the heat of the low temperature chilled water in the chilled water pipeline in the evaporimeter and freezes.
After adsorbents adsorb was saturated, the vacuum valve that connects adsorbent bed and evaporimeter cut out, and the heat transport fluid pipeline is by switching, from the hot water of thermal source once more to adsorbent heating in the bed, beginning new round heating desorption process.

Claims (8)

1, a kind of adsorbent bed that has condenser function concurrently is made up of core body heat transfer unit and housing condenser two parts, and wherein, the core body heat transfer unit comprises:
Heat transport fluid import and export, end socket, asbestos packing sheet thermal insulation layer, core body end plate, fluorubber sealing plate, U-shaped pipe, fin and last adsorbent coating thereof;
End socket is to have the circular section cavity of cover plate up and down, is divided into two parts with dividing plate in the middle of the cavity, and a part links to each other with the heat transport fluid inlet tube, and another part links to each other with the heat transport fluid outlet, and two cavity inner wall faces all are provided with asbestos packing sheet;
Be provided with the fluorubber sealing plate between end socket lower cover and the core body end plate;
Lower cover is a porous plate, and the position in hole is corresponding with the U-shaped pipe;
Welded seal between U-shaped pipe and the core body end plate;
The U-shaped pipe is provided with several aluminium fins that applies adsorbent layer;
The housing condenser comprises:
Water jacket, lime set outflow tube that housing, internal face barrier flaps, outside wall surface semi-elliptical cross-section coil pipe are formed;
The housing outside wall surface is the cold side of condenser, housing outer surface winding spiral coil;
Housing bottom is provided with condensate outlet;
The inner walls face is as the side of condensing of condenser, and this side surface that condenses is provided with several bafflers, and baffler is formed at internal face by the thin stainless steel substrates pressure welding that is converted into certain angle, circumferentially interlaced arrangement;
Seal by fluorine rubber ring between core body heat transfer unit and the housing condenser;
2, adsorbent bed according to claim 1 is characterized in that the gap after described core body end plate and end socket lower cover compress is 1mm.
3, adsorbent bed as claimed in claim 1 is characterized in that, described spiral coil cross section is a half elliptic, and its flat edge is the housing outside wall surface, and the semiellipse limit is welded on the housing outside wall surface by stainless sheet steel and forms.
4, adsorbent bed as claimed in claim 3 is characterized in that, the thickness of described stainless sheet steel is 0.5～1mm.
As claim 1 or 3 described adsorbent beds, it is characterized in that 5, described spiral coil can be and is arranged in parallel.
6, adsorbent bed as claimed in claim 5 is characterized in that, the import and export of the described spiral coil that is arranged in parallel are concentrated by the lump pipe.
7, adsorbent bed as claimed in claim 1 is characterized in that, the distance up and down of described baffler is 30～50cm.
8, adsorbent bed as claimed in claim 1 is characterized in that, the diameter of the viton seal ring between described core body heat transfer unit and the housing condenser is 5～8mm.
CNB011404361A 2001-12-06 2001-12-06 Adsorbent bed concurrent with condenser function Expired - Fee Related CN1167921C (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CNB011404361A CN1167921C (en) 2001-12-06 2001-12-06 Adsorbent bed concurrent with condenser function

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CN1167921C true CN1167921C (en) 2004-09-22

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Publication number Priority date Publication date Assignee Title
DE202010007821U1 (en) * 2010-06-10 2011-09-02 Viessmann Werke Gmbh & Co Kg Vacuum sorption
CN103120888B (en) * 2013-03-06 2016-04-13 广西大学 A kind of method dehydrating agent with low enthalpy energy regenerated methane
CN107246750B (en) * 2016-08-05 2023-03-14 广西大学 Rotary continuous adsorption bed for adsorption refrigeration

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