CA2090769A1 - Pressureless hot water accumulator for district heating systems, and a method and arrangement for maintaining the steam or water vapour above the hot water layer in the pressureless hot water accumulator of a district heating system at an almost constant overpressure - Google Patents
Pressureless hot water accumulator for district heating systems, and a method and arrangement for maintaining the steam or water vapour above the hot water layer in the pressureless hot water accumulator of a district heating system at an almost constant overpressureInfo
- Publication number
- CA2090769A1 CA2090769A1 CA002090769A CA2090769A CA2090769A1 CA 2090769 A1 CA2090769 A1 CA 2090769A1 CA 002090769 A CA002090769 A CA 002090769A CA 2090769 A CA2090769 A CA 2090769A CA 2090769 A1 CA2090769 A1 CA 2090769A1
- Authority
- CA
- Canada
- Prior art keywords
- hot water
- water
- diffuser
- layer
- hot
- 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.)
- Abandoned
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 166
- 238000010438 heat treatment Methods 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title claims abstract description 6
- 230000006870 function Effects 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims 2
- 230000002093 peripheral effect Effects 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052760 oxygen Inorganic materials 0.000 abstract description 2
- 239000001301 oxygen Substances 0.000 abstract description 2
- 238000005192 partition Methods 0.000 abstract 1
- 101100536354 Drosophila melanogaster tant gene Proteins 0.000 description 5
- 241001122767 Theaceae Species 0.000 description 2
- 241000180579 Arca Species 0.000 description 1
- 101100152865 Danio rerio thraa gene Proteins 0.000 description 1
- STEPQTYSZVCJPV-UHFFFAOYSA-N metazachlor Chemical compound CC1=CC=CC(C)=C1N(C(=O)CCl)CN1N=CC=C1 STEPQTYSZVCJPV-UHFFFAOYSA-N 0.000 description 1
- 101150014006 thrA gene Proteins 0.000 description 1
- CEWNUSPMSSUSJA-AATRIKPKSA-N ustin Chemical compound O1C(=O)C2=C(C)C(Cl)=C(O)C(Cl)=C2OC2=C(Cl)C(C(/C)=C/C)=C(O)C(C)=C21 CEWNUSPMSSUSJA-AATRIKPKSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D10/00—District heating systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
-
- 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
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/0034—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material
- F28D20/0039—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material with stratification of the heat storage material
-
- 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
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D2020/0065—Details, e.g. particular heat storage tanks, auxiliary members within tanks
- F28D2020/0069—Distributing arrangements; Fluid deflecting means
-
- 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]
- Y02B30/17—District heating
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/14—District level solutions, i.e. local energy networks
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Chemical & Material Sciences (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Cleaning Or Clearing Of The Surface Of Open Water (AREA)
- Secondary Cells (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
- Bathtub Accessories (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
Abstract The present invention relates to a pressureless hot water accumulator for district heating systems in which the diffusers (7, 8) are constructed so that the least possible turbulence will occur in the water volume of the accumulator tank (1), and so that a thin and stable partition layer (6) is maintained between the hot water layer (4) and the cold water layer (5) when hot water and cold water are delivered at maximum flow in the tank, via the diffusers, and to a method and an arrange-ment for maintaining the water vapour present above the hot water layer (4) at n substantially constant over-pressure, so as to prevent the ingress of oxygen.
(Fig. 1)
(Fig. 1)
Description
2~7~13 ^
A pre6surele~ hot ~ater accu~ulgtor for ~i~trict he~t-~ng 6y~tem~, ~nd a ~ethod and a~r~ngemen~ for maintain-ing the stRam or water v~pour ~bo~e the hot w~ter layer . . ~
ln_th~ pres6u~ul~ hot watcr ~ccumulator of a dl~trict h~ting ~y~to~ ~t an almost con~tant overpre~6ure.
~he pr~sent invention relnte~ to a pre~urele~s h~t water accumulator for dl~trict hsQtlng ~y6tQ~ nd method and arr~nge~ent for m~intainlng the stea~ or water ~apour abov~ the hot w~ter l~yer in the pre~ur~-le~ hot w~ter accumulator of a di~trict heating ~y~t~m at An almo~t con~tant overpre~ure.
Pre~urele~ hot water accumulntor~ for distrlct heatinq ~y~tem~ are known to the art. Ihese accumulator~ lnclude a lidded tank in which hot ~nter nnd cold water are ~tored ln two ~ep~rate layer~ sepDrated by an lnter-~ediate laysr, a top diffuser for introduclng and t~p-plng-off hot w~ter, at le~t one bottom dl~fuser for introducing nhd tapping-off cold water, whereln when hot ~ater i~ tapped-o~f aold water i~ ~imult~neou~ly sup-; plied ~nd v~oe ~ersa, 4 flo~t-supported tu`oe for ~ith-drawing by ~uction hot water from i~mediately b4neath the eurfacQ of the hot water layer, nnd a w~ter seal mounted bRtween the hot water lAyer ~nd the t~n~ lid, ~hereln the top dif~u~er is provl~ed ~lth ~ float, but i~ otherwi~e ldentical with the botto~ dlffuser, wher~-ln both diffuse~s include ~ ~ub~t~ntlally vertical and oonlcal di~fuser chnnnel, ~ radi~l diffuser which le : 30 dellmited ge~rally horizont~lly between two end-wall plntes ~nd conneotod to the dlffuser chnnnel at the end thereof having the large~t cro8e-section, and wherein th~ diffu~e~ channel at the top diffuser i~ located beneath the radi~l dlffuser but a~ove the r~dial dif-~u~e~ at the botto~ diffu~er.
~0~7~ ~
.
One object of the pree~nt invention i~ to provlde for di~trict heating network~ a pr~urele~s hot ~atnr ~ccu~ulator in ~hlch the diffu~er~ ~re con~truct~d ~o th~t th~ le~t pos~lble turbulence will o~cur ~n the w~t~r volume of the acoumulator t~nk, nnd no that 8 thin And 6table partitlon layer 1~ ~nintained batween the lay~r~ of hot ~nd aold ~ater when hot water nnd cold WntQr sre d~llvered ~t ~xl~u~ flow in the tnnk, vla the diffuser~. It i8 mentioned in thi~ regard that no pro~-1~ lem wlth regard to turbulenoe occurs when hot nnd coldwater nre taken fro~ the t~nX.
Another object of the prQsent inventlo~ ie to provide for diRtrlct heatlng network6 ~ pres~urele~3 hot~ water acaumulator ~here no oxygen l~ present in th~ space ~kOVR the hot water layer ln the aoou~ul~tor ~nd with whlch the ingre~ of oxy~en into sald ~p~c~ is prevented wh~n repleni~hlng the accumulntor wlth hot nnd cold water and whHn tappin~ hot and cold water therefrom. The pre6ence of oxyg~n in said ~pace leads to corro~lon of th~ gteel ~urf~ces of the t~nk above the hot w~ter, lnyer.
The first object i~ ~hieved ~ith th~ inventive accumu-l~tor, in that :
1. The radl~l dlffu~er i~ provided ~ith a rounded junctlon betw~en the dirfuae~ ohannel and end-w~ll pl~te connectlng therewith. Thl~ re~ults in n m~rn sym~etric~l veloclty profile of the water in the dlffu~er, when deliverinq hot and cold water to the tnnk.
2. ~he cross-~ectlonal are~ of the centr~l pnrt of the rqdial dlffU~er looated ne~re~t t~e diffuser channel 16 ~m~ller than the cro~ eatlonnl area of that p~rt of the diffuser ohannnl wh1ch connects there~ith, and the c~oss-~ectional nre~ o~ the outwnrdly lylng perlpheral p~rt of the radlal di~fue~r incren6es ln a direction - ~n~o~
~ro~ ~ld c~ntr~l dlffu~er part to the perlph~ry o~ 6~id dlffu~ar This reeults ln a loc~l drop ln prQ~ure whlch 1~ Hqu~lly a~ l~rge ln each r~di~l dlrection aroun~ the ~hc,le of th~ inlet perlphery, and ther~with in unlforr distrlbu~ion of wat~r in all horizont~l ~lrectlons wh~n hot and cold w~ter are delivered to th~ tnnk.
A pre6surele~ hot ~ater accu~ulgtor for ~i~trict he~t-~ng 6y~tem~, ~nd a ~ethod and a~r~ngemen~ for maintain-ing the stRam or water v~pour ~bo~e the hot w~ter layer . . ~
ln_th~ pres6u~ul~ hot watcr ~ccumulator of a dl~trict h~ting ~y~to~ ~t an almost con~tant overpre~6ure.
~he pr~sent invention relnte~ to a pre~urele~s h~t water accumulator for dl~trict hsQtlng ~y6tQ~ nd method and arr~nge~ent for m~intainlng the stea~ or water ~apour abov~ the hot w~ter l~yer in the pre~ur~-le~ hot w~ter accumulator of a di~trict heating ~y~t~m at An almo~t con~tant overpre~ure.
Pre~urele~ hot water accumulntor~ for distrlct heatinq ~y~tem~ are known to the art. Ihese accumulator~ lnclude a lidded tank in which hot ~nter nnd cold water are ~tored ln two ~ep~rate layer~ sepDrated by an lnter-~ediate laysr, a top diffuser for introduclng and t~p-plng-off hot w~ter, at le~t one bottom dl~fuser for introducing nhd tapping-off cold water, whereln when hot ~ater i~ tapped-o~f aold water i~ ~imult~neou~ly sup-; plied ~nd v~oe ~ersa, 4 flo~t-supported tu`oe for ~ith-drawing by ~uction hot water from i~mediately b4neath the eurfacQ of the hot water layer, nnd a w~ter seal mounted bRtween the hot water lAyer ~nd the t~n~ lid, ~hereln the top dif~u~er is provl~ed ~lth ~ float, but i~ otherwi~e ldentical with the botto~ dlffuser, wher~-ln both diffuse~s include ~ ~ub~t~ntlally vertical and oonlcal di~fuser chnnnel, ~ radi~l diffuser which le : 30 dellmited ge~rally horizont~lly between two end-wall plntes ~nd conneotod to the dlffuser chnnnel at the end thereof having the large~t cro8e-section, and wherein th~ diffu~e~ channel at the top diffuser i~ located beneath the radi~l dlffuser but a~ove the r~dial dif-~u~e~ at the botto~ diffu~er.
~0~7~ ~
.
One object of the pree~nt invention i~ to provlde for di~trict heating network~ a pr~urele~s hot ~atnr ~ccu~ulator in ~hlch the diffu~er~ ~re con~truct~d ~o th~t th~ le~t pos~lble turbulence will o~cur ~n the w~t~r volume of the acoumulator t~nk, nnd no that 8 thin And 6table partitlon layer 1~ ~nintained batween the lay~r~ of hot ~nd aold ~ater when hot water nnd cold WntQr sre d~llvered ~t ~xl~u~ flow in the tnnk, vla the diffuser~. It i8 mentioned in thi~ regard that no pro~-1~ lem wlth regard to turbulenoe occurs when hot nnd coldwater nre taken fro~ the t~nX.
Another object of the prQsent inventlo~ ie to provide for diRtrlct heatlng network6 ~ pres~urele~3 hot~ water acaumulator ~here no oxygen l~ present in th~ space ~kOVR the hot water layer ln the aoou~ul~tor ~nd with whlch the ingre~ of oxy~en into sald ~p~c~ is prevented wh~n repleni~hlng the accumulntor wlth hot nnd cold water and whHn tappin~ hot and cold water therefrom. The pre6ence of oxyg~n in said ~pace leads to corro~lon of th~ gteel ~urf~ces of the t~nk above the hot w~ter, lnyer.
The first object i~ ~hieved ~ith th~ inventive accumu-l~tor, in that :
1. The radl~l dlffu~er i~ provided ~ith a rounded junctlon betw~en the dirfuae~ ohannel and end-w~ll pl~te connectlng therewith. Thl~ re~ults in n m~rn sym~etric~l veloclty profile of the water in the dlffu~er, when deliverinq hot and cold water to the tnnk.
2. ~he cross-~ectlonal are~ of the centr~l pnrt of the rqdial dlffU~er looated ne~re~t t~e diffuser channel 16 ~m~ller than the cro~ eatlonnl area of that p~rt of the diffuser ohannnl wh1ch connects there~ith, and the c~oss-~ectional nre~ o~ the outwnrdly lylng perlpheral p~rt of the radlal di~fue~r incren6es ln a direction - ~n~o~
~ro~ ~ld c~ntr~l dlffu~er part to the perlph~ry o~ 6~id dlffu~ar This reeults ln a loc~l drop ln prQ~ure whlch 1~ Hqu~lly a~ l~rge ln each r~di~l dlrection aroun~ the ~hc,le of th~ inlet perlphery, and ther~with in unlforr distrlbu~ion of wat~r in all horizont~l ~lrectlons wh~n hot and cold w~ter are delivered to th~ tnnk.
3. The rsdlal dif~u~er 1~ provided At lts p~riphery wlth e~sentlall~ parallel rln or margin plates. Th~se pl~te~ function to deflect hot o~ cold water ent~ring lo the tank to a hori20ntal flo~ direction, resultin~ ln le~ di~turb~nce o~ the intermed1ate layer.
~. ~he e~d-~all plates hsve the for~ of cones with large top a~gle~, ~pheres with large radll, or co~bln~-tion of R~Veral con~5 ~vir~g large, but different top angles, ~herein t~ m~ntle ~urface~ and the spherloal ; convex ~ur f aces respectively ~ace tow~rd~ one another.~hi~ re~ult~ ln end-wall platec of greater ~hape ~tabll-lty, therewith redu~lng the ri~k of ec~cntric flo~ when delivering hot and cold w~ter to the t~nk.
: 20 The secon~ object of the inventlon i~ achieved with an inventlvQ ~ccu~ulator by means of ~n arr~ngemen~ ~hich i~ char~cterlz~d in that it includes a gener~lly verti-cal inner pipe, An outer pipe which i8 concentric~l ~ith the inner plpe, and a target plste which 1B mounted b~low ~ald tubes or pipes and extends p~rpendlcul~rly thereto, whereln the inner pipe 16 provi~ed at it~ lower end ~ith a nozzle orlfice, and with whlch water vapour reHent abovc the hot water l~yer in the accu~ul~tor 1~
maintslned ~t an al~ost const~nt overpres6ure, by intro-ducinq hot water ~nd 6te~ ~epar~tely into the water ~pour A~O~e the hot water layer ~t gr~t Yeloclty, mixin~ the hot water ~nd w~ter vapour together and dl~integr~ting the ~ater lnto small droplet~, wh~rein the hot ~at~r i~ delive~ed ~n ~ ~u~etsntially ~on~tant flow, wherene the flow cf water vapour i~ ad~u~ted in ~, " ~ , .
2 ~ 7 ~i ~
accordance ~lth the preM~urr~ o~ the water vspour above the hot watrar layr~r. AlternatlVely, hot water fr~ the hot w~tQr lnyer ~nd hot ~ter having n temp~arature whlch i~ higher thnn the tR~praraturr~ of the water v~pour above 5 t~e hot water layer are mixed t~g~ther, lntroduced at high velocity into the watrar vapour above the hot water layer, and disint~grated lnta ~all water droplets, whereln thr~ hot water taken from thra hot water layer i9 dqllv~red in ~ ~ub~tant1ally constant flow, wh~arca~ the 0 f low of h~t wnter ~ho~e tr~mperature i~ higher than the temperRture Or the water v~pour abovra the hot water l~yer i3 ~dju~ted ln ~coor~anae with the pre~ure of the wster vspour s~ove the hot wAtQr layer. Alternati~ely, hot wat~r t~en fro~ the hot water layer and hot ~ater who6e temperature iB higher th~n the te~perature of the water vapour above the hot water layer a~e lntroduced ~epsrately and ~t hlgh ~eloclty lnto the water vapour ~bove the hot water layer, ~lxed with one another, and dislntegrsted ~nto the for~ of ~11 droplet6, wherein the hot WQter whosrd te~perature ~ hlgher than the temperature of the w~ter vapour above the hot water layer 1~ dellvered in a 6u~stantially ~on~tant ~lo~, wherea6 the flow of hot wat~r t~ken from the hot ~ater layer 1~ ad~usted in ~ocord~nce wlth the pressure of the water vnpour ~bove the hot water layer.
As will bR avident from the afcregolng, in all thr~e ca~es there is obtained sbovR the hot w~er l~yer sm~ll droplrats o~ water who6e t~mperaturrs c~n bQ ch~nged in accordance with the pressure of the ~a~er vapour a~ove the hot water layer, by ad~ustin~ the flow of the water vapour dell~ered, the flow of the delivered hot water who~Q te~per~tur~ 18 ~lgher than the temper~ture of t~
water vspour ~bove the hot ~nt~r lay~r, or the flow of the hot water taken ~rom the hot ~at~r layer. Thus, it i8 po~Bi~le in thi~ wny to r~iae or lower the teupern-2 ~ 7 ~; j tur~ of tha water dropl~t~ Ln the water vapour a~ re-quired, wherein an lncrea~e in temper~tUrR wlll re8ul in partial ~aporizntion of the ~nter droplet~ un~ an increa~e in th~ pre~sure of the water vupour 4bov~ the hot wRter layer, whlle a decrea~e in t~perature ~lll r~sult condcn~ation of part of the water ~apou~ above the hot water luyer ~nd a rcduction in the pre~ur~ of the water vapour above the hot w~ter lAyer.
It ~hould be mentioned in thi~ aonn~ctlon that a ga~
other than water vapour, such a6 N2 or C02, can be u~ed to malhtAin a ~ub6t~ntially con6tAnt pre6~ure ak~ve the hot water layer 1n the accu~ula~or. The use of the ga~e6 ; N2 ~nd CO2, however, has been ~ound dlf~icult to control from n technlcal aspect and the use of ~uch gase~
lRo uneconomic and therefore not ~elevsnt at pre6ent.
he invetlon wLll now be described in ~ore detail with reference to the aacO~pAnying drawing, in which F~p~re 1 i~ a longlt~dlnal ~ectional vle~ of an inventive hot ; wnter accumulnt~r ~or dls~rlct heating 6ysten~; Flqure 2 i6 a longltudinal sectional vlew through A top diffu~r ln the acc~ulator 6ho~n in Yi~ ig~ a langi-tudln~l ~ectional view of a bottom diffu6er in ~h~
accunul~tor shown i~ Flg. l; and ElggLe~ a longitu-dlnal ~ectlonal view of an arrangement for ~nintaining the ste~m or wnter v~pour pros0nt between the lid of the ac~umulator tank and the hot water layer ~t a subst~n-tl~lly con~tant pre~sure.
~0 A~ wlll be ~een frcm the druwing~, nnd then p~rticularly from ~lg. 1, the ~ccumulator conpri~e6, ln ~ known manner, ~ lldded tank 1, in which hot water and cold water ure ~tored ln two 6epa~ate lay~r6 4, 5 re~p~ctivc-~y which aro separated by an intermediat~ layer 6, a topdiffu~er 7 for introduc~ng and tapplng-off hot wnt~r, ~t 2~7~ `f,~
,, G
lea~t one botto~ dirfuser 8 ~or introducinq ~nd tap~nq-off cold ~ter, whereln ~hen hat w~ter i~ tapp~d-off cold water i~ ltaneou~ly ~upplied and vice ver~a, tube 19 which 1~ aArried by a flo~t 18 ~nd whlch func-tion~ to withdraw by ~uotion hot wAter ~rom immedintely hene~th th~ ~urfac~ of the hot water layer, and a w~ter seal mount~d betwe~n the hot water layer and the tank lld, ~her~in th~ top di~ er ig provided ~ith a float 9, bùt iB otherwi~d ldentical wlth the botto~ diffu6er, wherein both diffu~erq 7, 8 inoludu a ~ub6tantially vettical and conical diffuser channel 10, a radlal diffu~er c ~hich ig dclimited qenerAlly horizont~lly bet~een two end-w~ll plate6 and connected to the dif-fu~er channel at the end thereof havlng the l~rgést cro6s-~ction, ~nd w~erein the ~iffu6er ch~nnel at the top di~fus~r 1~ located beneath the radial diffu~er but above t~ radi~l diffuser at the botto~ dlffu6er.
A~ will bq seen from ~lg8. 2, 3 and 4, t~e inventi~e na~mulator differs from the kno~n pre~surele~s hot ~at~r accumulator intended for di~trict heating ne~-~or~s, ln that the r~dlal di~fuser c a rounqed junction 13 betwcen the diff~qer channel 10 and end-wsll plate 11 connecting therewith, in t~ the ~ros~-~ectlon~l area of the oentral part 14 of the radial diffuser o loaated neate~t t~e diffu~er ahannel 10 i~ ~maller than ~he cro~s-~ectlon~l are~ o~ that part of the dlffuser chan-n~l whl~h connects therewith, and thQ cro~s-seotion~l area of the outw~rdly lying peripher~l part of the radial dlffu~er ihcrsa~e6 in A d~rection from said ~entral dlffu~er pa~t to the perlphery o~ snl~ d~user, in that the ra~ial diffu6er c iB provided at lt~ periph-ery with at leflst on~ rl~ or m~rgln plate, prefer~bly two superl~po~ed and gonerally horizontal ri~ or ~argln plate8 16, 17, in that thq end-w~l plate~ have the form of cones wlth large top angle~, ~phere~ wlth large 2 ~ 9 ~
rQdii, or co~bination of eeveral cone~ h~ving l~rge, but different top angle6, wherein the mantle surface6 and the ~pheric~l convex surface6 reepectively face towarde one ~nother, ln ~hat the accumulator al~o includes an ~rranqement e which ~unct~ons to maintaln the ~te~ or water vapour preeent the hot wat~r lay~r 4 and the tank lld at a ~ub~tantially con~t~nt o~erpressure of s~y 500 : Pa, s~id arrangement lnolude~ a generally vertlcal inner plpe 20, an outer pipe 27 which 1~ co~ccntrlc~l wlth the inmer pipe, ~nd A target plate 24 which i~ maunted ~elow eald p~pe~ and extend~ perpendiaularly thsr~to, whereln the inner pip~ 20 1~ provided at lt~ lower end wlth a nozzle orifice 22, and the wator aeal i8 ~ountéd in the vlcinlty of thQ arrange~ent.
~5 When the ~rrangement e ie used to put the inventive method lnto effect, the innor pip4 20 provlded wlth the .; no2zle or ~et oriflce ~unations to deliver ho~ water from the hot wnter l~yer 4 onto the target plate 24 6t high ~peed, ~o a~ to ror~ ~ film of water on thQ~'plate, the outer pipe 22 function~ to dell~er w~ter vapour or ~team onto the w~ter fil~ on the plat~ 24 at hlgh ~peed ~nd mix with the wster in the water film, and the plate 24 functlona to gulfle the ~lxed-water-fllm to the edges 25 of the plAte, 6aid nixed-water~film flowlng ov~r the edges of the plate to form ~m~ll droplet~ of w~ter, wherein the hot ~ater i8 dellvered ln a ~ub~tantially oonetsnt ~low, whereae the flo~ of the wate~ vapour i6 adju~ted ln aocordance wlth the preesure of the stea~ or water vsp~ur above the hot water layer. AlternatlVely, the inner pipe 20 equlpped with the noæzle orifice ~ay funotion te deliver hot ~ter t~ken from the hot water layer 4 and hot w~ter who6e te~perature i~ hlgher than the te~per~ture of the ~tea~ or watar vapour ~bove the hot w~tor lAyer at high 6p~ed onto a target plate 24 eu~h ~ to form a film o~ water on the ~u~fac~ of the ~; :
a plat~, wherein the plate i8 constructed to oondu~t th~
water film to the edge~ 25 of the plnte, snid fil`m flowing over said edges to for~ small droplet~ of water, wh~rein the flow of h~t water taken from the hot wnter lnyer i6 ~ub~t~ntlally const~nt, wheren~ the flow of hot wnter who~e temperature i~ nigher than the temper~ture of the ~tea~ or water v~pour above the hot water layer ia ad ju~ted in accordance ~ith the pres6ure of tho ~te~m or Wht~r VHpOUr above the hot water layer. Altern~tive-ly, the inner pipe 29 equlpp~d with the aforesa1d n~zzlQ
ori~ice may be con~tructad to deli~er to the target plate at great ~p~ed hot water who~e te~per~ture i8 higher than th~ t~perAtUre of the ~te~m or w~ter vapour nbove the hot water layqr 4, ~o ~B to for~ fl fllm of water on ~id plate, and the outer plpe 27 ~sy be oon-6truoted to deliver at great ~peed anto the w~t~r fllm on the targQt plate hot water taXen from the hot ~ater layer, ~uch ~8 to mix thi~ ~ater ~lth the water ~llm on the plate, and th~ plate 24 m~y be construoted ~o con-r 20 duct the hot wnter/hot-~ter-~ll~ to the edge~ 25~of the plate, ~o as to flow over sald adges and forn ~
:~ dropleta of ~ater, ~herein the hot water who~e tempern-ture i~ hlgher th~ the temperature of th~ stenm or WQter vapour above the hot w~ter lsyer 1~ delivered in a subst~ntiAlly aonstant flow, ~ere~ the flow of hot water taken from the hot water layer 1~ adju6ted in accordance with ~he pre6~ure of the ~team or water vapour above the hot water l~yer.
:
~. ~he e~d-~all plates hsve the for~ of cones with large top a~gle~, ~pheres with large radll, or co~bln~-tion of R~Veral con~5 ~vir~g large, but different top angles, ~herein t~ m~ntle ~urface~ and the spherloal ; convex ~ur f aces respectively ~ace tow~rd~ one another.~hi~ re~ult~ ln end-wall platec of greater ~hape ~tabll-lty, therewith redu~lng the ri~k of ec~cntric flo~ when delivering hot and cold w~ter to the t~nk.
: 20 The secon~ object of the inventlon i~ achieved with an inventlvQ ~ccu~ulator by means of ~n arr~ngemen~ ~hich i~ char~cterlz~d in that it includes a gener~lly verti-cal inner pipe, An outer pipe which i8 concentric~l ~ith the inner plpe, and a target plste which 1B mounted b~low ~ald tubes or pipes and extends p~rpendlcul~rly thereto, whereln the inner pipe 16 provi~ed at it~ lower end ~ith a nozzle orlfice, and with whlch water vapour reHent abovc the hot water l~yer in the accu~ul~tor 1~
maintslned ~t an al~ost const~nt overpres6ure, by intro-ducinq hot water ~nd 6te~ ~epar~tely into the water ~pour A~O~e the hot water layer ~t gr~t Yeloclty, mixin~ the hot water ~nd w~ter vapour together and dl~integr~ting the ~ater lnto small droplet~, wh~rein the hot ~at~r i~ delive~ed ~n ~ ~u~etsntially ~on~tant flow, wherene the flow cf water vapour i~ ad~u~ted in ~, " ~ , .
2 ~ 7 ~i ~
accordance ~lth the preM~urr~ o~ the water vspour above the hot watrar layr~r. AlternatlVely, hot water fr~ the hot w~tQr lnyer ~nd hot ~ter having n temp~arature whlch i~ higher thnn the tR~praraturr~ of the water v~pour above 5 t~e hot water layer are mixed t~g~ther, lntroduced at high velocity into the watrar vapour above the hot water layer, and disint~grated lnta ~all water droplets, whereln thr~ hot water taken from thra hot water layer i9 dqllv~red in ~ ~ub~tant1ally constant flow, wh~arca~ the 0 f low of h~t wnter ~ho~e tr~mperature i~ higher than the temperRture Or the water v~pour abovra the hot water l~yer i3 ~dju~ted ln ~coor~anae with the pre~ure of the wster vspour s~ove the hot wAtQr layer. Alternati~ely, hot wat~r t~en fro~ the hot water layer and hot ~ater who6e temperature iB higher th~n the te~perature of the water vapour above the hot water layer a~e lntroduced ~epsrately and ~t hlgh ~eloclty lnto the water vapour ~bove the hot water layer, ~lxed with one another, and dislntegrsted ~nto the for~ of ~11 droplet6, wherein the hot WQter whosrd te~perature ~ hlgher than the temperature of the w~ter vapour above the hot water layer 1~ dellvered in a 6u~stantially ~on~tant ~lo~, wherea6 the flow of hot wat~r t~ken from the hot ~ater layer 1~ ad~usted in ~ocord~nce wlth the pressure of the water vnpour ~bove the hot water layer.
As will bR avident from the afcregolng, in all thr~e ca~es there is obtained sbovR the hot w~er l~yer sm~ll droplrats o~ water who6e t~mperaturrs c~n bQ ch~nged in accordance with the pressure of the ~a~er vapour a~ove the hot water layer, by ad~ustin~ the flow of the water vapour dell~ered, the flow of the delivered hot water who~Q te~per~tur~ 18 ~lgher than the temper~ture of t~
water vspour ~bove the hot ~nt~r lay~r, or the flow of the hot water taken ~rom the hot ~at~r layer. Thus, it i8 po~Bi~le in thi~ wny to r~iae or lower the teupern-2 ~ 7 ~; j tur~ of tha water dropl~t~ Ln the water vapour a~ re-quired, wherein an lncrea~e in temper~tUrR wlll re8ul in partial ~aporizntion of the ~nter droplet~ un~ an increa~e in th~ pre~sure of the water vupour 4bov~ the hot wRter layer, whlle a decrea~e in t~perature ~lll r~sult condcn~ation of part of the water ~apou~ above the hot water luyer ~nd a rcduction in the pre~ur~ of the water vapour above the hot w~ter lAyer.
It ~hould be mentioned in thi~ aonn~ctlon that a ga~
other than water vapour, such a6 N2 or C02, can be u~ed to malhtAin a ~ub6t~ntially con6tAnt pre6~ure ak~ve the hot water layer 1n the accu~ula~or. The use of the ga~e6 ; N2 ~nd CO2, however, has been ~ound dlf~icult to control from n technlcal aspect and the use of ~uch gase~
lRo uneconomic and therefore not ~elevsnt at pre6ent.
he invetlon wLll now be described in ~ore detail with reference to the aacO~pAnying drawing, in which F~p~re 1 i~ a longlt~dlnal ~ectional vle~ of an inventive hot ; wnter accumulnt~r ~or dls~rlct heating 6ysten~; Flqure 2 i6 a longltudinal sectional vlew through A top diffu~r ln the acc~ulator 6ho~n in Yi~ ig~ a langi-tudln~l ~ectional view of a bottom diffu6er in ~h~
accunul~tor shown i~ Flg. l; and ElggLe~ a longitu-dlnal ~ectlonal view of an arrangement for ~nintaining the ste~m or wnter v~pour pros0nt between the lid of the ac~umulator tank and the hot water layer ~t a subst~n-tl~lly con~tant pre~sure.
~0 A~ wlll be ~een frcm the druwing~, nnd then p~rticularly from ~lg. 1, the ~ccumulator conpri~e6, ln ~ known manner, ~ lldded tank 1, in which hot water and cold water ure ~tored ln two 6epa~ate lay~r6 4, 5 re~p~ctivc-~y which aro separated by an intermediat~ layer 6, a topdiffu~er 7 for introduc~ng and tapplng-off hot wnt~r, ~t 2~7~ `f,~
,, G
lea~t one botto~ dirfuser 8 ~or introducinq ~nd tap~nq-off cold ~ter, whereln ~hen hat w~ter i~ tapp~d-off cold water i~ ltaneou~ly ~upplied and vice ver~a, tube 19 which 1~ aArried by a flo~t 18 ~nd whlch func-tion~ to withdraw by ~uotion hot wAter ~rom immedintely hene~th th~ ~urfac~ of the hot water layer, and a w~ter seal mount~d betwe~n the hot water layer and the tank lld, ~her~in th~ top di~ er ig provided ~ith a float 9, bùt iB otherwi~d ldentical wlth the botto~ diffu6er, wherein both diffu~erq 7, 8 inoludu a ~ub6tantially vettical and conical diffuser channel 10, a radlal diffu~er c ~hich ig dclimited qenerAlly horizont~lly bet~een two end-w~ll plate6 and connected to the dif-fu~er channel at the end thereof havlng the l~rgést cro6s-~ction, ~nd w~erein the ~iffu6er ch~nnel at the top di~fus~r 1~ located beneath the radial diffu~er but above t~ radi~l diffuser at the botto~ dlffu6er.
A~ will bq seen from ~lg8. 2, 3 and 4, t~e inventi~e na~mulator differs from the kno~n pre~surele~s hot ~at~r accumulator intended for di~trict heating ne~-~or~s, ln that the r~dlal di~fuser c a rounqed junction 13 betwcen the diff~qer channel 10 and end-wsll plate 11 connecting therewith, in t~ the ~ros~-~ectlon~l area of the oentral part 14 of the radial diffuser o loaated neate~t t~e diffu~er ahannel 10 i~ ~maller than ~he cro~s-~ectlon~l are~ o~ that part of the dlffuser chan-n~l whl~h connects therewith, and thQ cro~s-seotion~l area of the outw~rdly lying peripher~l part of the radial dlffu~er ihcrsa~e6 in A d~rection from said ~entral dlffu~er pa~t to the perlphery o~ snl~ d~user, in that the ra~ial diffu6er c iB provided at lt~ periph-ery with at leflst on~ rl~ or m~rgln plate, prefer~bly two superl~po~ed and gonerally horizontal ri~ or ~argln plate8 16, 17, in that thq end-w~l plate~ have the form of cones wlth large top angle~, ~phere~ wlth large 2 ~ 9 ~
rQdii, or co~bination of eeveral cone~ h~ving l~rge, but different top angle6, wherein the mantle surface6 and the ~pheric~l convex surface6 reepectively face towarde one ~nother, ln ~hat the accumulator al~o includes an ~rranqement e which ~unct~ons to maintaln the ~te~ or water vapour preeent the hot wat~r lay~r 4 and the tank lld at a ~ub~tantially con~t~nt o~erpressure of s~y 500 : Pa, s~id arrangement lnolude~ a generally vertlcal inner plpe 20, an outer pipe 27 which 1~ co~ccntrlc~l wlth the inmer pipe, ~nd A target plate 24 which i~ maunted ~elow eald p~pe~ and extend~ perpendiaularly thsr~to, whereln the inner pip~ 20 1~ provided at lt~ lower end wlth a nozzle orifice 22, and the wator aeal i8 ~ountéd in the vlcinlty of thQ arrange~ent.
~5 When the ~rrangement e ie used to put the inventive method lnto effect, the innor pip4 20 provlded wlth the .; no2zle or ~et oriflce ~unations to deliver ho~ water from the hot wnter l~yer 4 onto the target plate 24 6t high ~peed, ~o a~ to ror~ ~ film of water on thQ~'plate, the outer pipe 22 function~ to dell~er w~ter vapour or ~team onto the w~ter fil~ on the plat~ 24 at hlgh ~peed ~nd mix with the wster in the water film, and the plate 24 functlona to gulfle the ~lxed-water-fllm to the edges 25 of the plAte, 6aid nixed-water~film flowlng ov~r the edges of the plate to form ~m~ll droplet~ of w~ter, wherein the hot ~ater i8 dellvered ln a ~ub~tantially oonetsnt ~low, whereae the flo~ of the wate~ vapour i6 adju~ted ln aocordance wlth the preesure of the stea~ or water vsp~ur above the hot water layer. AlternatlVely, the inner pipe 20 equlpped with the noæzle orifice ~ay funotion te deliver hot ~ter t~ken from the hot water layer 4 and hot w~ter who6e te~perature i~ hlgher than the te~per~ture of the ~tea~ or watar vapour ~bove the hot w~tor lAyer at high 6p~ed onto a target plate 24 eu~h ~ to form a film o~ water on the ~u~fac~ of the ~; :
a plat~, wherein the plate i8 constructed to oondu~t th~
water film to the edge~ 25 of the plnte, snid fil`m flowing over said edges to for~ small droplet~ of water, wh~rein the flow of h~t water taken from the hot wnter lnyer i6 ~ub~t~ntlally const~nt, wheren~ the flow of hot wnter who~e temperature i~ nigher than the temper~ture of the ~tea~ or water v~pour above the hot water layer ia ad ju~ted in accordance ~ith the pres6ure of tho ~te~m or Wht~r VHpOUr above the hot water layer. Altern~tive-ly, the inner pipe 29 equlpp~d with the aforesa1d n~zzlQ
ori~ice may be con~tructad to deli~er to the target plate at great ~p~ed hot water who~e te~per~ture i8 higher than th~ t~perAtUre of the ~te~m or w~ter vapour nbove the hot water layqr 4, ~o ~B to for~ fl fllm of water on ~id plate, and the outer plpe 27 ~sy be oon-6truoted to deliver at great ~peed anto the w~t~r fllm on the targQt plate hot water taXen from the hot ~ater layer, ~uch ~8 to mix thi~ ~ater ~lth the water ~llm on the plate, and th~ plate 24 m~y be construoted ~o con-r 20 duct the hot wnter/hot-~ter-~ll~ to the edge~ 25~of the plate, ~o as to flow over sald adges and forn ~
:~ dropleta of ~ater, ~herein the hot water who~e tempern-ture i~ hlgher th~ the temperature of th~ stenm or WQter vapour above the hot w~ter lsyer 1~ delivered in a subst~ntiAlly aonstant flow, ~ere~ the flow of hot water taken from the hot water layer 1~ adju6ted in accordance with ~he pre6~ure of the ~team or water vapour above the hot water l~yer.
:
Claims (3)
1. A pressureless hot water accumulator for district heating systems, comprising a tank (1) having a lid (a) in which hot water and cold water are stored in two separate layers (4 and 5 ) respectively which are sepa-rated by an intermediate layer (6), a top diffuser (7) for introducing and tapping-off hot water, at least one bottom diffuser (8) for introducing and tapping-off cold water, wherein when hot water is tapped-off cold water is simultaneously supplied and vice versa, a pipe (19) which is carried by a float (18) and which functions to withdraw by suction hot water from immediately beneath the surface of the hot water layer, and a water seal mounted between the hot water layer and the tank lid, wherein the top diffuser is provided with a float (9), but is otherwise identical with the bottom diffuser, wherein both diffusers (7, 8) include a substantially vertical and conical diffuser channel (10), a radial diffuser (c) which is delimited generally horizontally between two end-wall plates (11, 12) and connected to the diffuser channel at the end thereof having the largest cross-section, and wherein the diffuser channel at the top diffuser is located beneath the radial dif-fuser but above the radial diffuser at the bottom dif-fuser, c h a r a c t e r i z e d in that the radial diffuser (c) has a rounded junction (13) between the diffuser channel (10) and end-wall plate (11) connecting therewith; in that the cross-sectional area of the central part (14) of the radial diffuser (c) located nearest the diffuser channel (10) is smaller than the cross-sectional area of that part of the diffuser chan-nel which connects therewith, and the cross-sectional area of the outwardly lying peripheral part of the radial diffuser increases in a direction from said central diffuser part to the periphery of said diffuser;
in that the radial diffuser (c) is provided at its periphery with superimposed and generally horizontal rim or margin plates (16, 17); in that the end-wall plates (11, 12) have the form of cones with large top angles, spheres with large radii, or combination of several cones having large, but different top angles, wherein the mantle surfaces and the spherical convex surfaces respectively face towards one another; in that the acoumulator also includes an arrangement (e) which func-tions to maintain the water vapour or water vapour present between the hot water layer (4) and the tank lid (a) at a substantially constant overpressure of say 500 Pa, said arrangement including a generally vertical inner pipe (20), an outer pipe (27) which is con-centrical with the inner pipe, and a target plate (24) which is mounted below said pipes and extends perpendic-ularly thereto, wherein the inner pipe (20) is provided at its lower end with a nozzle orifice (22); and in that the water seal is mounted beneath the arrangement (e).
in that the radial diffuser (c) is provided at its periphery with superimposed and generally horizontal rim or margin plates (16, 17); in that the end-wall plates (11, 12) have the form of cones with large top angles, spheres with large radii, or combination of several cones having large, but different top angles, wherein the mantle surfaces and the spherical convex surfaces respectively face towards one another; in that the acoumulator also includes an arrangement (e) which func-tions to maintain the water vapour or water vapour present between the hot water layer (4) and the tank lid (a) at a substantially constant overpressure of say 500 Pa, said arrangement including a generally vertical inner pipe (20), an outer pipe (27) which is con-centrical with the inner pipe, and a target plate (24) which is mounted below said pipes and extends perpendic-ularly thereto, wherein the inner pipe (20) is provided at its lower end with a nozzle orifice (22); and in that the water seal is mounted beneath the arrangement (e).
2. A method for maintaining the steam or water vapour present above the hot water layer in the pressureless hot water accumulator of a district heating system at an almost constant overpressure, c h a r a c t e r i z e d by introducing hot water and water vapour separately into the water vapour above the hot water layer at high speed, mixing the hot water and water vapour together and disintegrating the water into small droplets, where-in the hot water is delivered in a substantially con-stant flow whereas the flow of water vapour is adjusted in accordance with the pressure of the water vapour present above the hot water layer; or by mixing together hot water from the hot water layer and hot water having a temperature which is higher than the temperature of the water vapour present above the hot water layer, introducing the mixture at high speed into the water vapour present above the hot water layer and disinte-grating the water into small water droplets, wherein the hot water taken from the hot water layer is delivered in a substantially constant flow whereas the flow of hot water whose temperature is higher than the temperature of the water vapour above the hot water layer is adjust-ed in accordance with the pressure of the water vapour above the hot water layer; or by introducing hot water taken from the hot water layer and hot water whose temperature is higher than the temperature of the water vapour above the hot water layer separately and at high speed into the water vapour above the hot water layer, mixing said hot water together, and disintegrating the water mixture into small water droplets, wherein the hot water whose temperature is higher than the temperature of the water vapour above the hot water layer is deliv-ered in a substantially constant flow whereas the flow of hot water taken from the hot water layer is adjusted in accordance with the pressure of the water vapour present above the hot water layer.
3. An arrangement for carrying out the method of main-taining the steam or water vapour present above the hot water layer in the pressureless hot water accumulator of A district heating system at an almost constant over-pressure in accordance with Claim 2, c h a r a c-t e r i z e d in that the arrangement (e) includes a generally vertical inner pipe (20), an outer pipe (27) which is generally concentrical with the inner pipe, and a target plate (24) which is mounted beneath the pipes (20, 27) perpendicularly thereto, and in that the inner pipe (20) is provided with a nozzle orifice at its bottom end.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9200558A SE505438C2 (en) | 1992-02-25 | 1992-02-25 | Method and apparatus for maintaining a near constant overpressure of the above hot water layer in a pressureless hot water accumulator for a district heating system existing water vapor |
| SE9200558-6 | 1992-02-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2090769A1 true CA2090769A1 (en) | 1993-08-26 |
Family
ID=20385423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002090769A Abandoned CA2090769A1 (en) | 1992-02-25 | 1993-02-25 | Pressureless hot water accumulator for district heating systems, and a method and arrangement for maintaining the steam or water vapour above the hot water layer in the pressureless hot water accumulator of a district heating system at an almost constant overpressure |
Country Status (5)
| Country | Link |
|---|---|
| KR (1) | KR0139073B1 (en) |
| CA (1) | CA2090769A1 (en) |
| DE (1) | DE4305867C2 (en) |
| FI (1) | FI930792A0 (en) |
| SE (2) | SE505438C2 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29903995U1 (en) | 1999-03-05 | 1999-05-27 | MVV Energie AG, 68159 Mannheim | Warm house station |
| KR20100116288A (en) * | 2009-04-22 | 2010-11-01 | 주식회사 제이앤지 | Heat pump hot-water apparatus, controlling of the same |
| PL2698584T3 (en) | 2013-03-26 | 2016-08-31 | Bilfinger Vam Anlagentechnik Gmbh | Pressureless accumulator for district heating systems |
| EP2881672A1 (en) * | 2013-12-04 | 2015-06-10 | Siemens Aktiengesellschaft | Pressureless heat accumulator with compensation conduit |
| DE102016100649B4 (en) | 2016-01-15 | 2021-12-30 | Kompoferm Gmbh | Thermal energy storage in the form of a flat bottom tank |
| KR101984155B1 (en) | 2017-06-23 | 2019-05-30 | 플로우테크 주식회사 | Variable diffuser |
| DE102017129184A1 (en) | 2017-12-07 | 2019-06-13 | Technische Universität Chemnitz | Method and device for loading and / or unloading a thermal energy store |
| DE102019104367A1 (en) * | 2019-02-21 | 2020-08-27 | Technische Universität Chemnitz | Thermal energy storage, in particular multi-zone storage in the form of a flat bottom tank |
| DE202020100895U1 (en) | 2020-02-19 | 2020-03-18 | Technische Universität Chemnitz | Thermal energy storage, in particular multi-zone storage in the form of a flat-bottom tank |
| EP3867588B1 (en) | 2019-02-21 | 2023-11-29 | Technische Universität Chemnitz | Thermal energy storage device, in particular multi-zonal storage device in the form of a flat-bottomed tank |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD237879A1 (en) * | 1985-05-30 | 1986-07-30 | Ve Kom Verbundnetze En Stammbe | HEAT STORAGE FOR HEATING WATER |
-
1992
- 1992-02-25 SE SE9200558A patent/SE505438C2/en not_active IP Right Cessation
- 1992-03-26 KR KR1019920004889A patent/KR0139073B1/en not_active IP Right Cessation
-
1993
- 1993-02-23 FI FI930792A patent/FI930792A0/en unknown
- 1993-02-25 CA CA002090769A patent/CA2090769A1/en not_active Abandoned
- 1993-02-25 DE DE4305867A patent/DE4305867C2/en not_active Expired - Lifetime
- 1993-05-14 SE SE9301669A patent/SE500275C2/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR0139073B1 (en) | 1998-05-01 |
| SE500275C2 (en) | 1994-05-24 |
| SE505438C2 (en) | 1997-08-25 |
| SE9301669L (en) | 1993-08-26 |
| KR930018217A (en) | 1993-09-21 |
| SE9301669D0 (en) | 1993-05-14 |
| DE4305867A1 (en) | 1993-08-26 |
| SE9200558L (en) | 1993-08-26 |
| DE4305867C2 (en) | 2002-03-14 |
| FI930792A0 (en) | 1993-02-23 |
| SE9200558D0 (en) | 1992-02-25 |
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| Date | Code | Title | Description |
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