EP2396600A1 - Systeme de distribution d'eau chaude comportant un ballon d'accumulation sous pression d'un gaz - Google Patents
Systeme de distribution d'eau chaude comportant un ballon d'accumulation sous pression d'un gazInfo
- Publication number
- EP2396600A1 EP2396600A1 EP10710069A EP10710069A EP2396600A1 EP 2396600 A1 EP2396600 A1 EP 2396600A1 EP 10710069 A EP10710069 A EP 10710069A EP 10710069 A EP10710069 A EP 10710069A EP 2396600 A1 EP2396600 A1 EP 2396600A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hot water
- storage tank
- gas
- tank
- pressure
- 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.)
- Ceased
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
- F24D17/0005—Domestic hot-water supply systems using recuperation of waste heat
- F24D17/001—Domestic hot-water supply systems using recuperation of waste heat with accumulation of heated water
-
- 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
- F24D17/0078—Recirculation systems
-
- 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]
- Y02B30/18—Domestic hot-water supply systems using recuperated or waste heat
Definitions
- Hot water distribution system comprising a storage tank under pressure of a gas
- the invention is in the field of hot water distribution networks.
- Fig. 1A shows a first prior art pressurized hot water delivery system in which water stored in a water tower 100 feeds a constantly filled water storage tank 110.
- This storage tank 110 comprises heating means 130, the cold water supply being conventionally made from the bottom of the storage tank, the hot water being drawn from the upper part, according to the principle of thermal stratification.
- the storage tank 110 is at the pressure of the cold water supply network, typically at least 400 kPa.
- a circulator 150 distributes hot water in the network 8, this network can be used for various purposes and include showers, baths, sinks, both in industrial facilities in single or collective housing, buildings, hotels .. .
- the mixture of hot and cold water in the storage tank 110 causes a significant heat loss, the thermal stratification inside the hot water storage tank 110 being strongly attenuated. , sometimes even disappearing, when large amounts of hot water are removed from the storage tank.
- FIG. 1B shows a second known hot water pressure distribution system of the prior art, in which the hot water tank 110, under atmospheric pressure, is partially filled with air 115.
- a delivery pump 120 is placed downstream of the hot water tank 110.
- the distribution pump 120 when it must generate a large pressure difference between its suction and its discharge, typically of the order of 500 kPa to 1000 kPa consumes a very significant energy, of the order of 2 at 3 kJ / kg circulated water.
- the invention relates to a hot water distribution system that does not have the disadvantages of the systems presented above.
- the invention relates to a hot water distribution system comprising:
- a storage tank partially filled with hot water under pressure of a compressed gas, the storage tank having at least one hot water inlet and a hot water outlet for supplying a distribution network;
- the hot water distribution system according to the invention is very interesting from the energy point of view, for the following reasons.
- the storage tank contains only hot water, which greatly reduces the heat losses due to the mixing between hot and cold water during racking. Thanks to the invention, large amounts of hot water can be withdrawn from the storage tank, which has a significant advantage over thermally stratified systems. Furthermore, very advantageously, the balloon can be partially filled while being at a pressure greater than atmospheric pressure, which avoids using a fuel-consuming dispensing pump, which can be replaced by a simple circulator .
- the hot water dispensing system according to the invention comprises a compressed gas reservoir connected to the storage tank by at least one pipe equipped with a valve adapted to regulate the transfer of gas in said pipe.
- the dispensing system according to the invention preferably comprises a compressor for increasing the pressure of compressed gas in the tank.
- the hot water dispensing system comprises means for transferring gas from the compressed air tank to the hot water storage tank when the pressure of the gas in the tank The accumulation rate decreases due to the decrease in the volume of hot water in the storage tank for supply to the distribution network.
- the hot water distribution system comprises means for transferring gas from the hot water storage tank to the compressed air tank when the gas pressure in the balloon accumulation increases due to the filling of the storage tank with hot water.
- This embodiment advantageously makes it possible to reduce the energy consumed by the compressor mentioned above.
- FIGS. 1A and 1B already described, represent two hot water distribution systems of the prior art;
- Figure 2 shows a hot water distribution system according to a first embodiment of the invention;
- Figure 3 shows a hot water distribution system according to a second embodiment of the invention.
- Figure 2 shows a hot water distribution system according to a first embodiment of the invention.
- This system comprises an accumulation tank 1 partially filled with hot water 4, under pressure of a volume of gas 5, for example air. Unlike the storage tank 110 of the prior art, the storage tank 1 does not contain cold water.
- the hot water 4 initially occupies 70% of the storage tank 1, the pressure of the gas 5 being 500 kPa.
- the pressure in the storage tank 1 decreases as a function of the volume of hot water withdrawn.
- the hot water dispensing system comprises means for adjusting the pressure in the hot water storage tank 1.
- the storage tank 1 is connected, by a pipe 14, to a gas tank 2, (in this case an air tank), the gas pressure in the tank 2 being greater than the pressure of the gas in the storage tank 1.
- the pressure in the gas tank 2 is about 700 kPa.
- the hot water distribution system according to the invention described here comprises, on the pipe 14, a solenoid valve 13, for transferring gas under pressure from the gas tank 2 to the balloon. hot water accumulation 1.
- the hot water distribution system comprises a pressure regulator 12 also placed on the pipe 14, connected to a controller 20.
- a pressure regulator 12 also placed on the pipe 14, connected to a controller 20.
- the storage tank 1 comprises a valve in its upper part, in other words in the high position.
- this valve is placed in the highest part of the balloon.
- This valve is preferably calibrated to the maximum operating pressure of the hot water storage tank 1. In fact, when the tank 1 fills with hot water during the production cycle, the air pressure must be lowered. when the filling of the hot water tank causes a rise in pressure in the tank 1 beyond the high threshold which then triggers the opening of the valve 11, the position of this valve ensuring the rejection of a gas jet overpressure excluding any discharge of water.
- the hot water is produced by means not shown (solar collectors, heat pump, boiler), these means for producing hot water being connected to the accumulation tank 1 by a pipe 6 , so as to restore a target filling level in liquid, for example 70%.
- the hot water storage tank 1 comprises a pressure tap 9, for discharging air to the outside in order to limit the pressure increase to a determined level, for example 800. kPa.
- the tank 2 is protected from overpressure by a valve 15 calibrated at the maximum operating pressure of the tank.
- the circulation in the hot water network 8 is facilitated by a circulator 10 placed at the outlet of the accumulation tank 1, on a pipe 7.
- the hot water distribution system according to the invention is very interesting from the energy point of view.
- the accumulation tank 1 contains only hot water. But above all, very advantageously, because of the pressure in the hot water storage tank 1, there is no need for energy-consuming dispensing pump, a simple circulator 10 being sufficient. It is interesting to compare the hot water distribution system according to the invention with a conventional pump delivery system for installation in a hotel in which the hot water consumption is about 10,000 kg per day.
- the distribution pump 120 consumes approximately 2 to 3 kJ / kg of circulated water, ie a total consumption of 20 MJ.
- the circulator 10 used in the invention consumes 0.02 kJ / kg circulated water (about a hundred times less energy than the dispensing pump 120), a total consumption of 20kJ.
- a compressor of the type of the compressor 3 consumes 150 to 180 kJ / kg of gas to be compressed, over a pressure difference of 500 to 1000 kPa, or about 4.5 MJ in this example.
- the hot water distribution system according to this first embodiment of the invention thus consumes about five times less energy than the conventional system.
- FIG. 3 represents a hot water distribution system according to a second embodiment of the invention. This system differs from the system described with reference to FIG. 2, in that it further comprises a pipe 18 allowing, the filling the tank 2 with the compressed air in the storage tank 1 when filling the storage tank 1 with water through the pipe 6.
- This embodiment advantageously makes it possible to reduce the energy consumed by the compressor 3.
- a pressure regulator 16 and a solenoid valve 17 are placed on the pipe 18.
- the pressure regulator 16 transmits this indication to the controller 20 which then opens the solenoid valve 17, the excess gas pressure in the storage tank 1 allowing the transfer of a mass of gas from the accumulation tank 1 to the tank 2.
- the compressor work of the compressor 3 is therefore reduced.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0950982A FR2942299B1 (fr) | 2009-02-16 | 2009-02-16 | Systeme de distribution d'eau chaude comportant un ballon d'accumulation sous pression d'un gaz |
PCT/FR2010/050256 WO2010092311A1 (fr) | 2009-02-16 | 2010-02-16 | Systeme de distribution d'eau chaude comportant un ballon d'accumulation sous pression d'un gaz |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2396600A1 true EP2396600A1 (fr) | 2011-12-21 |
Family
ID=40792717
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10710069A Ceased EP2396600A1 (fr) | 2009-02-16 | 2010-02-16 | Systeme de distribution d'eau chaude comportant un ballon d'accumulation sous pression d'un gaz |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2396600A1 (fr) |
FR (1) | FR2942299B1 (fr) |
WO (1) | WO2010092311A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2975472B1 (fr) | 2011-05-18 | 2013-06-21 | Ass Pour La Rech Et Le Dev De Methodes Et Processus Ind Armines | Procede de production d'un debit d'eau chaude et systeme associe |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3003688C2 (de) * | 1980-02-01 | 1982-10-14 | Messerschmitt-Bölkow-Blohm GmbH, 8000 München | Wärmespeicheranlage mit einem flüssigen Wärmeträger und einem Speichertank |
US5823177A (en) * | 1996-01-16 | 1998-10-20 | Whitehead; John C. | Pumpless solar water heater with isolated pressurized storage |
-
2009
- 2009-02-16 FR FR0950982A patent/FR2942299B1/fr active Active
-
2010
- 2010-02-16 WO PCT/FR2010/050256 patent/WO2010092311A1/fr active Application Filing
- 2010-02-16 EP EP10710069A patent/EP2396600A1/fr not_active Ceased
Non-Patent Citations (1)
Title |
---|
See references of WO2010092311A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2010092311A1 (fr) | 2010-08-19 |
FR2942299A1 (fr) | 2010-08-20 |
FR2942299B1 (fr) | 2013-04-26 |
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Inventor name: CLODIC, DENIS Inventor name: NEHME, GEORGES |
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Effective date: 20151008 |