SE443390B - WASTE WATER TANK INCLUDING A MIXER - Google Patents
WASTE WATER TANK INCLUDING A MIXERInfo
- Publication number
- SE443390B SE443390B SE8001148A SE8001148A SE443390B SE 443390 B SE443390 B SE 443390B SE 8001148 A SE8001148 A SE 8001148A SE 8001148 A SE8001148 A SE 8001148A SE 443390 B SE443390 B SE 443390B
- Authority
- SE
- Sweden
- Prior art keywords
- tank
- waste water
- inlet
- water tank
- channel
- Prior art date
Links
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
- F24D17/00—Domestic hot-water supply systems
- F24D17/02—Domestic hot-water supply systems using heat pumps
-
- 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
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/0206—Heat exchangers immersed in a large body of liquid
- F28D1/0213—Heat exchangers immersed in a large body of liquid for heating or cooling a liquid in a tank
-
- 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
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/16—Waste heat
- F24D2200/20—Sewage water
-
- 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
-
- 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
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0012—Recuperative heat exchangers the heat being recuperated from waste water or from condensates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
- F28F13/08—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by varying the cross-section of the flow channels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
- F28F2250/06—Derivation channels, e.g. bypass
-
- 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]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
-
- 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]
- Y02B30/56—Heat recovery units
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Treatment Of Water By Ion Exchange (AREA)
- Water Treatment By Sorption (AREA)
Description
8001148-9 z loppet. När det tillförda spillvattnet är varmare än det i tanken redan befintliga spillvattnet, så uppnås i varje fall att medeltemperaturen i tanken bibehålles. Vid tillföring av kallvatten blandas detta emellertid med spillvattnet i tanken, varige- nom medeltemperaturen i tanken minskar och sålunda även värmemängden i tanken. Ändamålet med uppfinningen är att åstadkomma en spillvattentank där tillförseln av kallt och varmt vatten till tanken regleras enbart av skillnaden i täthet av kallt och varmt vatten. 8001148-9 z loppet. When the supplied waste water is hotter than the waste water already existing in the tank, it is achieved in each case that the average temperature in the tank is maintained. When supplying cold water, however, this is mixed with the waste water in the tank, whereby the average temperature in the tank decreases and thus also the amount of heat in the tank. The object of the invention is to provide a waste water tank where the supply of cold and hot water to the tank is regulated only by the difference in density of cold and hot water.
I en spillvattentank av ovan angivet slag uppnås detta enligt uppfinningen ge- nom att även ti lloppskanalen för spillvattnet öppnar sig mot tankens botten och att tilloppet och utloppet omedelbart före tillopps-och avloppsöppningarna i tankens botten övergår i partier med en genomsläppningsarea som är i varje fall fyra gånger stö°rre än tilloppskanalens och avloppskanalens genomströmningsarea, varvid nämnda delar är förbundna med tillopps- och avloppsöppni ngarna genom uppåtriktade kanaler och förenade genom en parallellkanal genom nedåtriktade kanaler.In a waste water tank of the type indicated above, this is achieved according to the invention in that the inlet channel for the waste water also opens towards the bottom of the tank and that the inlet and outlet immediately before the inlet and drain openings in the bottom of the tank merge into portions with a passage area. four times larger than the flow area of the inlet channel and the drain channel, said parts being connected to the inlet and drain openings through upwardly directed channels and connected by a parallel channel through downwardly directed channels.
Som en följd av den ökade genomströmningsarean hos tilloppskanalen reduceras det tillförda spillvattnets flödeshastighet varigenom de uppåtverkande och nedåtver- kande krafterna bibehålles. Sålunda uppnås, enbart på grund av den höga tätheten, att det kallare vattnet ej kan i ntränga i tanken utan flyter direkt till utloppska- nalen via parallellkanalen. Enbart varmare vatten kan nå fram till tanken på grund av täthetsskillnaden, varigenom alltid maximalt vänneinnehåll bibehålles. En spill- vattentank av detta sl ag kan tillverkas på enkelt sätt och till låg kostnad och dess arbetssätt är väsentligen problemfritt och kräver ej extra energitillförsel.As a result of the increased flow area of the inlet duct, the flow rate of the supplied waste water is reduced, whereby the upward-acting and down-acting forces are maintained. Thus, only due to the high density, it is achieved that the colder water cannot penetrate into the tank but flows directly to the outlet channel via the parallel channel. Only warmer water can reach the tank due to the density difference, whereby the maximum friend content is always maintained. A wastewater tank of this type can be manufactured in a simple manner and at a low cost, and its working method is essentially problem-free and does not require extra energy supply.
Parallellkanalens genomströmningsarea överensstämmer företrädesvis med genom- strömningsarean hos nämnda delar. i För att förhindra inkommande varmt spillvatten från att blandas med det något kallare spillvatten som finns på botten av tanken har den kanal som öppnar sig mot tilloppsöppningen i tankens botten en förlänging som skjuter in i tanken.The flow area of the parallel channel preferably corresponds to the flow area of said parts. i To prevent incoming hot waste water from mixing with the slightly colder waste water that is at the bottom of the tank, the channel that opens towards the inlet opening in the bottom of the tank has an extension that slides into the tank.
För att förhindra överströmning direkt mellan tilloppsöppningen och avloppsöpp- ningen inuti tanken och erhålla en likfonnig förskjutningsströmning är tillopps- och utloppsöppningarna vid tankens botten företrädesvis belägna så långt ifrån varandra som fijligt. Tillopps- och utloppsöppningarna vid tankens botten är företrädesvis belägna intill tankens vägg på diagonalt motbelägna ställen. 1 I ett föredraget utföringsexempel på spillvattentanken enligt uppfinningen be- står vänneväxlaren av en vattenbehållare som från tankens överdel inskjuter i tan- ken, varvid ett tillopp för kallvatten öppnar sig mot nederdelen av behållaren.In order to prevent overflow directly between the inlet opening and the drain opening inside the tank and to obtain a uniform displacement flow, the inlet and outlet openings at the bottom of the tank are preferably located as far apart as possible. The inlet and outlet openings at the bottom of the tank are preferably located next to the wall of the tank in diagonally opposite places. In a preferred embodiment of the waste water tank according to the invention, the friend exchanger consists of a water container which projects into the tank from the upper part of the tank, an inlet for cold water opening towards the lower part of the container.
Spillvattentanken kan dessutom användas i förening med en värmepump. I så fall är den nedre delen av tankens vägg företrädesvis uppbyggd som en förångare i en vär- mepump eller ansluten därtill genom en strömningskrets, varvid den utanför tanken 3 8001148-9 belägna överdelen av vattenbehållaren är utförd som en kondensor för värmepumpen eller också ansluten därtill genom en strömningskrets.The waste water tank can also be used in conjunction with a heat pump. In that case, the lower part of the wall of the tank is preferably constructed as an evaporator in a heat pump or connected thereto by a flow circuit, the upper part of the water tank located outside the tank being designed as a condenser for the heat pump or also connected thereto. through a circuit.
Utföringsexempel på uppfinningen kommer att beskrivas närmare i det följande under hänvisning till ritningarna, där: fig_1 visar ett snitt genom en spillvatten- tank försedd med en värmeväxlare; och jïg_§ visar ett snitt genom en spillvatten- tank med en värmeväxlare och en värmepump. 4 Den i fig 1 visade spillvattentanken innefattar en tank 1 av exempelvis metall eller ett syntetiskt material. En tilloppskanal 3, som är utförd som ett fallrör, och en avloppskanal 4 öppnar sig not tankens botten 2, varvid den sistnämnda kanalen sträcker sig uppåt utanför tanken 1 i varje fall så långt som motsvaras av tankens maximala fyllhöjd. Tillopps- och avloppsöppningarna 5 och 6 i botten 2 av tanken är belägna så långt ifrån varandra som möjligt. Öppningarna är företrädesvis anordnade intill tankens vägg 14 på två diagonalt motbelägna ställen. Strax intill tillopps- och utloppsöppningarna 5 och 6 i tankens botten 2 övergår tillopps- och utloppskana- lerna 3 och 4 i två delar 7 och 8 vars genomströmningsarea är åtminstone fyra gånger större än genomströmningsarean för tillopps- och avloppskanalerna 3 och 4. De uppåt- riktade kanalerna 9 och 10 i delarna 7 och 8 öppnar sig mot tillopps- och avlopps- öppningarna 5 respektive 6 i tankens botten 2, medan de nedåtriktade kanalerna 11 och 12 är sammankopplade genom en parallellkanal 13. Parallellkanalens 13 genom- strömningsarea överensstämmer med delarnas 7 och 8. Parallellkanalen 13 innefattar en tillslutbar rensningsöppning 15. Kanalen 9 av tilloppsdelen 7, som öppnar sig mot tilloppsöppningen 5 i tankens botten 2, är förlängd genom ett rör 16 som inskjuter i tanken 1 och företrädesvis är perforerat.Embodiments of the invention will be described in more detail in the following with reference to the drawings, in which: Fig. 1 shows a section through a waste water tank provided with a heat exchanger; and jïg_§ shows a section through a waste water tank with a heat exchanger and a heat pump. The waste water tank shown in Fig. 1 comprises a tank 1 of, for example, metal or a synthetic material. An inlet channel 3, which is designed as a downcomer, and a drain channel 4 open towards the bottom 2 of the tank, the latter channel extending upwards outside the tank 1 in each case as far as corresponds to the maximum filling height of the tank. The inlet and drain openings 5 and 6 in the bottom 2 of the tank are located as far apart as possible. The openings are preferably arranged next to the wall 14 of the tank in two diagonally opposite places. Right next to the inlet and outlet openings 5 and 6 in the bottom 2 of the tank, the inlet and outlet ducts 3 and 4 merge into two parts 7 and 8 whose flow area is at least four times larger than the flow area of the inlet and outlet ducts 3 and 4. the directed channels 9 and 10 in the parts 7 and 8 open towards the inlet and drain openings 5 and 6, respectively, in the bottom 2 of the tank, while the downwardly directed channels 11 and 12 are connected by a parallel channel 13. The flow area of the parallel channel 13 corresponds to the parts 7 and 8. The parallel channel 13 comprises a closable cleaning opening 15. The channel 9 of the inlet part 7, which opens towards the inlet opening 5 in the bottom 2 of the tank, is extended by a pipe 16 which projects into the tank 1 and is preferably perforated.
En vattenbehâllare 18, som fungerar som värmeväxlare inskjuter från tankens överdel genom tankens lucka 17. Behållaren 18 innehåller ett tillopp 19 för kallvat- ten och ett utlopp 20 för varmvatten. Behållarens 18 överdel, som är belägen utanför tanken 1, inrymmer ett elektriskt hjälpvänmesystem 21. U Tanken 1 för spillvatten och den del av behållaren 18 som är belägen utanför tanken är omgivna av ett isoleringsskikt 22. Flödeshastigheten reduceras väsentligt i delen 7 till följd av den ökande genomströmingsarean, varigenom endast spillvatt- nets varierande täthet har betydelse för den fortsatta strömningen. Om spillvatten- strömmen är kallare än det redan i tanken 1 befintliga spillvattnet så flyter det kallare vattnet förbi tanken genom parallellkanalen 3, d.v.s. det kalla spillvattnet lämnar utloppskanalen utan att ha blandats med det varmare vattnet i tanken 1.A water tank 18, which functions as a heat exchanger, projects from the upper part of the tank through the tank door 17. The tank 18 contains an inlet 19 for cold water and an outlet 20 for hot water. The upper part of the container 18, which is located outside the tank 1, houses an electrical auxiliary heating system 21. The waste water tank 1 and the part of the container 18 located outside the tank are surrounded by an insulating layer 22. The flow rate is significantly reduced in the part 7 due to the increasing flow area, whereby only the varying density of the wastewater is important for the continued flow. If the wastewater stream is colder than the wastewater already in the tank 1, the colder water flows past the tank through the parallel channel 3, i.e. the cold waste water leaves the outlet channel without having mixed with the warmer water in the tank 1.
Om det inkommande spillvattnet är vanmare än spillvattnet i tanken 1 så uppstår ett uppâtriktat flöde i delen 7, varigenom det varma spillvattnet stiger uppåt in i tanken 1 genom tilloppsöppningen 5 och bortskjuter kallare vatten från tankens 1 nederdel via avloppsöppningen 6 och avloppskanalen 4 i en mängd som svarar mot dessIf the incoming wastewater is more watery than the wastewater in the tank 1, an upward flow occurs in the part 7, whereby the hot wastewater rises upwards into the tank 1 through the inlet opening 5 and pushes colder water from the lower part of the tank 1 via the drain opening 6 and the drainage channel 4 which corresponds to its
Claims (7)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19792906096 DE2906096A1 (en) | 1979-02-17 | 1979-02-17 | WATER STORAGE |
Publications (2)
Publication Number | Publication Date |
---|---|
SE8001148L SE8001148L (en) | 1980-08-18 |
SE443390B true SE443390B (en) | 1986-02-24 |
Family
ID=6063140
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8001148A SE443390B (en) | 1979-02-17 | 1980-02-14 | WASTE WATER TANK INCLUDING A MIXER |
Country Status (7)
Country | Link |
---|---|
JP (1) | JPS55110890A (en) |
CA (1) | CA1130274A (en) |
DE (1) | DE2906096A1 (en) |
FR (1) | FR2453382A1 (en) |
GB (1) | GB2049123B (en) |
IT (1) | IT1140601B (en) |
SE (1) | SE443390B (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1119442B (en) * | 1979-10-30 | 1986-03-10 | Fiat Ricerche | PROCEDURE FOR HEATING WATER USED IN A APPLIANCE INSERTED IN A DOMESTIC HYDRAULIC CIRCUIT AND EQUIPMENT SUITABLE TO CARRY OUT SUCH PROCEDURE |
DE4324687A1 (en) * | 1993-07-23 | 1995-01-26 | Werner Hub | Recovery of heat from waste water |
GB2402204A (en) * | 2003-05-21 | 2004-12-01 | Villers Pierre De | A heat exchanger for waste water |
FR2946127B1 (en) * | 2009-05-26 | 2013-06-28 | Commissariat Energie Atomique | HEAT RECOVERY FROM WASTEWATER |
FR2970071B1 (en) * | 2011-01-05 | 2017-05-12 | Lyonnaise Eaux France | DEVICE FOR RECOVERING HEAT ON GRAY WATER |
ES2449625B1 (en) * | 2012-03-27 | 2015-09-08 | Sedical S.A. | Hydraulic system to recover heat energy from the outlet water of the pool vessel |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2307235A1 (en) * | 1975-04-07 | 1976-11-05 | Serete | Water heating system for building - has temporary drain water storage tank containing evaporator of heat pump |
DE2625157A1 (en) * | 1976-06-04 | 1977-12-08 | Bogner Und Huber Gmbh & Co San | Heat recovery system from hot waste water - feeds storage from collector with heat exchanger and controlled drain valve |
FR2381257A1 (en) * | 1977-02-16 | 1978-09-15 | David Jean Pierre | Heat recovery system removing heat from waste water - by using it to heat up fresh water, domestic or industrial |
-
1979
- 1979-02-17 DE DE19792906096 patent/DE2906096A1/en active Granted
-
1980
- 1980-02-14 CA CA345,703A patent/CA1130274A/en not_active Expired
- 1980-02-14 GB GB8004998A patent/GB2049123B/en not_active Expired
- 1980-02-14 JP JP1612180A patent/JPS55110890A/en active Pending
- 1980-02-14 SE SE8001148A patent/SE443390B/en not_active IP Right Cessation
- 1980-02-14 IT IT19922/80A patent/IT1140601B/en active
- 1980-02-15 FR FR8003426A patent/FR2453382A1/en active Granted
Also Published As
Publication number | Publication date |
---|---|
GB2049123B (en) | 1983-03-30 |
CA1130274A (en) | 1982-08-24 |
DE2906096C2 (en) | 1988-01-07 |
GB2049123A (en) | 1980-12-17 |
DE2906096A1 (en) | 1980-08-28 |
JPS55110890A (en) | 1980-08-26 |
IT1140601B (en) | 1986-10-01 |
SE8001148L (en) | 1980-08-18 |
FR2453382B1 (en) | 1983-12-09 |
IT8019922A0 (en) | 1980-02-14 |
FR2453382A1 (en) | 1980-10-31 |
IT8019922A1 (en) | 1981-08-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
SE443390B (en) | WASTE WATER TANK INCLUDING A MIXER | |
SE450197B (en) | SHOWER WITH CLOSED WATER CIRCULATION AND TWO DIFFERENT CONTAINERS | |
SE448257B (en) | SET AND DEVICE FOR COOLING GAS PURPASES FROM WASTE COMBUSTION AND THEREFORE EXERCISING HEAT ENERGY | |
US3648766A (en) | Heating and cooling unit | |
CN104100731B (en) | A kind of constant-temperature effluent valve | |
JPS57182514A (en) | Air conditioner for motor car | |
DE3414973A1 (en) | Ventilation system for a house | |
NO129705B (en) | ||
US2931344A (en) | Closed condensate return and boiler feed system | |
DE3521980A1 (en) | Energy-saving shower system | |
SE439829B (en) | SET AND DEVICE FOR THE COLLECTION OF WARM WATER WATER | |
JPS5842836Y2 (en) | Structure for creating average water temperature in a circulating bath | |
US780982A (en) | Feed-water heater. | |
US173270A (en) | Improvement in processes and means for evaporation of sirups | |
JPS59142353A (en) | Air extracting device for solar heat water heater | |
DE3019318A1 (en) | Multiple heat source central heating circuit - uses storage tank with connections for solar heater, auxiliary boilers and refrigerator condenser coils | |
US168405A (en) | Improvement in water-trap supplies and connections | |
JPS5937645Y2 (en) | solar water heater | |
US208370A (en) | Improvement in apparatus for utilizing exhaust-steam | |
JPS58148343A (en) | Solar heat collector | |
US117675A (en) | Improvement in steam-heaters | |
SU1059404A1 (en) | Water-cooling tower | |
CN108151277A (en) | Bottom case and with its air conditioner | |
US655665A (en) | Apparatus for heating and sterilizing fluids. | |
SU1413381A1 (en) | Heating radiator |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |
Ref document number: 8001148-9 Effective date: 19900215 Format of ref document f/p: F |