WO2017001222A1 - Sauerstoffreduzierungsanlage und verfahren zum auslegen einer sauerstoffreduzierungsanlage - Google Patents
Sauerstoffreduzierungsanlage und verfahren zum auslegen einer sauerstoffreduzierungsanlage Download PDFInfo
- Publication number
- WO2017001222A1 WO2017001222A1 PCT/EP2016/064148 EP2016064148W WO2017001222A1 WO 2017001222 A1 WO2017001222 A1 WO 2017001222A1 EP 2016064148 W EP2016064148 W EP 2016064148W WO 2017001222 A1 WO2017001222 A1 WO 2017001222A1
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- WO
- WIPO (PCT)
- Prior art keywords
- oxygen
- concentration
- separation system
- gas separation
- enclosed area
- 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.)
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Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C99/00—Subject matter not provided for in other groups of this subclass
- A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
- A62C99/0018—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using gases or vapours that do not support combustion, e.g. steam, carbon dioxide
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C99/00—Subject matter not provided for in other groups of this subclass
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/002—Fire prevention, containment or extinguishing specially adapted for particular objects or places for warehouses, storage areas or other installations for storing goods
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
Definitions
- the present invention relates to a system for reducing the oxygen content in the room atmosphere of an enclosed area or for holding a reduced oxygen content in the room atmosphere of an enclosed area below a predetermined concentration and reduced concentration (operating concentration) compared to the oxygen concentration of the normal ambient air.
- the plant according to the invention is in particular designed to prevent the formation or spread of fires by introducing an oxygen-reduced gas mixture or an oxygen-displacing gas into the room atmosphere of an enclosed area.
- the system according to the invention is basically also suitable for extinguishing fires in the enclosed area. Accordingly, the system according to the invention serves, for example, to reduce the risk and to extinguish fires in an area to be monitored, whereby the enclosed area is also permanently inertised at different levels of reduction for fire prevention or firefighting purposes or can be permanently digitized.
- the basic principle of the inertization technique for fire prevention is based on the knowledge that in enclosed areas, their equipment is sensitive responds to the action of water, the risk of fire can be countered by the fact that the oxygen concentration in the affected area is lowered to a value of, for example, 15 vol .-%. With such a (reduced) oxygen concentration, most flammable materials can no longer ignite. Accordingly, the main area of application of this inertization technique for fire prevention is also computerized areas, electrical switching and distribution rooms, enclosed facilities such as storage areas with particularly high-value assets.
- the fire prevention effect resulting from this inertization technique is based on the principle of oxygen displacement. Normal ambient air is known to be 21% by volume of oxygen, 78% by volume of nitrogen and 1% by volume of other gases. For fire prevention, by introducing an oxygen-reduced gas mixture or an oxygen-displacing gas, such as nitrogen, the oxygen content in the room atmosphere of the enclosed area is reduced.
- CA Controlled Atmosphere
- Oxygen reduction systems in particular those used as fire prevention systems, fire extinguishing systems, explosion suppression systems or explosion protection systems by an atmosphere is generated in an enclosed area, which has a lower continuous oxygen concentration than under ambient conditions, have - compared to water extinguishing systems, such as sprinkler systems or Spray mist extinguishing systems - in particular the advantage that they are suitable for volume extinguishing.
- water extinguishing systems such as sprinkler systems or Spray mist extinguishing systems
- Calculated this (minimum) amount of the oxygen-reduced gas mixture or oxygen-displacing gas to be introduced into the area is determined by the effective volume and the airtightness of the space envelope of the enclosed area.
- the airtightness of the envelope of an enclosed area is usually determined by a differential pressure test (blower door test).
- a differential pressure test Blower door test
- a fan embedded in a room envelope By means of a fan embedded in a room envelope, a constant overpressure and underpressure of (eg) 50 Pa are generated and maintained within the enclosed area.
- the amount of air flowing through leaks in the enclosure of the enclosed area must be forced into the enclosed area by the fan and measured.
- the so-called n50 value (unit: 1 / h) indicates how often the interior volume is converted per hour.
- the airtightness determined with a differential pressure test thus corresponds to an air exchange rate caused by leaks in a space envelope of the enclosed area, which is also referred to herein as a "feed-independent air exchange rate.”
- the airtightness determined with a differential pressure test does not take into account an air exchange caused by The purpose of loading and / or inspecting the enclosed area is, if necessary, formable openings in the space envelope, such as doors, gates or windows.This rate of air change is also referred to herein as a "feed-dependent air exchange rate".
- the feed-dependent air exchange rate can generally not be determined beforehand, since the feed-dependent air change rate varies over time and depends on when and how often the space envelope of the enclosed area is opened for the purpose of loading and / or inspection. how long the opening formed for the purpose of loading and / or walking in the space envelope of the enclosed area, and how large ultimately this opening is.
- these parameters determining the charge-dependent air exchange rate can not be determined beforehand, so that with regard to the charge-dependent air exchange rate of the enclosed area during the discharge. always assumes peak values by assuming maximum loading and / or commissioning. In this way, it is ensured that with the oxygen reduction system, a sufficient amount of oxygen-displacing gas can always be provided per unit time in order to be able to securely hold a reduced oxygen content in the room atmosphere of the enclosed area below the predetermined operating concentration even in extreme cases.
- One object of the invention is to provide a method for designing an oxygen reduction system, with which the oxygen reduction system can be optimally configured with regard to the actual conditions.
- a corresponding oxygen reduction system is to be specified, which is better adapted to the actual conditions of the enclosed area compared to oxygen reduction systems, which are designed and projected according to the previous approach.
- the task on which the invention is based is achieved by the subject matter of the independent patent claim 20.
- the invention particularly relates to an oxygen reduction system which is designed to reduce the oxygen content in the room atmosphere of an enclosed area to a concentration which is below a predetermined operating concentration and reduced compared to the oxygen concentration of the normal ambient air.
- the oxygen reduction system according to the invention is designed to keep a reduced oxygen content in the room atmosphere of an enclosed area below a predetermined and reduced operating concentration compared to the oxygen concentration of the normal ambient air.
- the oxygen reduction system has a gas separation system whose outlet is fluidly connected to the enclosed area to continuously supply an oxygen-reduced gas mixture or an oxygen-displacing gas to the space atmosphere of the enclosed area.
- the gas separation system is operated continuously, so that continuously, d. H. in time, the room atmosphere of the enclosed area is supplied with an oxygen-reduced gas mixture or an oxygen-displacing gas.
- the gas separation system is designed such that, in a continuous operation of the gas separation system in a first mode of operation, the oxygen concentration in the room atmosphere of the enclosed area is always in a range between the predetermined operating concentration and a predetermined or definable lower limit concentration.
- a quantity of an oxygen-reduced gas mixture lying within a predefined or definable range is continuously provided.
- the advantages that can be achieved with the solution according to the invention are obvious: since it is provided that the gas separation system is operated continuously, the oxygen-reduced gas mixture can be provided at the outlet of the gas separation system in an amount that corresponds to the quantity as if it were larger dimensioned gas separation system is operated discontinuously. Therefore, compared to off the stand
- the technology known approaches the gas separation system and the oxygen reduction system are dimensioned smaller overall, so that thereby the cost of the initial installation of the oxygen reduction system are reduced.
- the continuous operation of the gas separation system also has the further advantage of minimizing wear on the gas separation system due to repeated on and off switching.
- the predetermined operating concentration which is reduced in comparison to the oxygen concentration of the normal ambient air, corresponds to the design concentration of the enclosed area.
- the design concentration in accordance with VdS guideline 3527 (version: filing date) refers to the ignition limit minus a safe distance and is therefore dependent on the materials stored in the enclosed area.
- the present invention is not limited to such embodiments in which, with the aid of the oxygen reduction system, a reduced oxygen content in the space atmosphere of an enclosed area is kept below the design concentration of the area. Rather, the invention also encompasses those embodiments in which generally a reduced oxygen content in the room atmosphere of the enclosed area is kept below a predetermined and reduced operating concentration compared to the oxygen concentration of normal ambient air, which predetermined operating concentration is also above the design concentration of the area can.
- the solution according to the invention is particularly suitable for an oxygen reduction system which is projected with regard to an enclosed area, wherein the air exchange rate of the enclosed area varies cyclically with respect to time.
- This is the case, for example, in rooms or warehouses, the space envelope of which is temporarily opened for the purpose of inspection and / or loading, the frequency of the inspection / loading being subject to a certain cycle, for example a day cycle or a week cycle, so that as a whole the air exchange rate of the enclosed area in terms of the time varies cyclically and each time cycle is divisible into several consecutive time periods.
- the mean air exchange rate of the enclosed area assumes a corresponding value for each time period. So it is conceivable, for example, that in a three-shift operation a warehouse is used 6 days a week.
- the total air exchange rate of the enclosed area (here: warehouse) varies cyclically at weekly intervals, the average total air exchange rate of the enclosed area (warehouse) during the 6 working days being a feed-dependent air exchange rate and a feed-independent air exchange rate composed.
- the feed-dependent air exchange rate is negligible, so that the mean total air exchange rate essentially corresponds to the charge-independent air exchange rate of the enclosed area.
- the feed-dependent air exchange rate takes into account an air exchange that takes place through openings in the space envelope of the enclosed area, which are (intentionally) formed as required for the purpose of loading and / or inspection. These openings are, in particular, doors, gates, locks or windows.
- the gas separation system takes into account the respective duration of the time periods and taking into account the respective average total air exchange rates for each time period is designed so that in a continuous operation of the gas separation system in a first operating mode, the oxygen concentration in the room atmosphere of the enclosed area always in a range between the predetermined operating concentration (such as Out- concentration of the enclosed area) and the predetermined or definable lower limit concentration.
- the predetermined operating concentration such as Out- concentration of the enclosed area
- the gas separation system can be operated in at least two and preferably three different operating modes. In these at least two modes of operation, the gas separation system continuously provides an oxygen-reduced gas mixture at the outlet. In contrast to the first operating mode, however, in the second operating mode of the gas-separation system, the quantity of an oxygen-reduced gas mixture continuously provided per unit time at the outlet is increased, relative to a reference value of a residual oxygen concentration.
- the gas separation system can also be operated in a third operating mode in which-compared to the first operating mode-the quantity of an oxygen-reduced gas mixture continuously provided per unit time at the outlet decreases, relative to a reference value of a residual oxygen concentration is.
- the invention is not limited only to an oxygen reduction system of the type described above, but also relates to a method for designing an oxygen reduction system for an enclosed area.
- the method according to the invention has in particular the following method steps:
- a gas separation system of the oxygen reduction system taking into account the weighted mean air exchange rates of the enclosed area such that in the case of a continuous In a first operating mode, in which a quantity of an oxygen-reduced gas mixture or oxygen-displacing gas within a predetermined or definable range is continuously provided at the outlet of the gas separation system, the oxygen concentration in the room atmosphere of the enclosed area is always in one Range between a predetermined operating concentration, such as the design concentration of the enclosed area, and a predetermined lower limit concentration.
- FIG. 1 is a principle timing chart for explaining the operation of a conventional oxygen reduction equipment; a principle time chart for explaining the operation of a first exemplary embodiment of the oxygen reduction system according to the invention; and a principle timing chart for explaining the operation of a second exemplary embodiment of the oxygen reduction apparatus of the present invention.
- the in the time diagram in FIG. 1 period considered is a total of one week (7 days).
- FIG. 1 shows, in particular, the time evolution of the oxygen concentration in the room atmosphere of the enclosed area. It can be seen in particular that the oxygen concentration is always in a range between about 15.0 vol .-% and 14.9 vol .-%. This is a classic control range that is defined by an upper threshold and a lower threshold oxygen concentration in the room atmosphere of the enclosed area.
- the upper threshold oxygen concentration in the room atmosphere of the enclosed area represents the turn-on threshold at which a gas separation system associated with the oxygen reduction system is turned on to provide an oxygen depleted gas mixture at the outlet of the gas separation system.
- the provided oxygen-reduced gas mixture is then introduced into the room atmosphere of the enclosed area, so that subsequently the oxygen concentration in the room atmosphere decreases accordingly.
- the operation of the gas separation system is discontinued.
- the supply of the oxygen-reduced gas mixture is interrupted in the room atmosphere of the enclosed area, as a result, in the space atmosphere of the enclosed area, the oxygen concentration increases again accordingly.
- This charge-independent air exchange rate can be determined beforehand in particular by means of a differential pressure measurement.
- feed-dependent air exchange rate ie. H. an air exchange through provided in the shell of the enclosed area openings which are opened for the purpose of loading and / or inspection of the enclosed area.
- FIG. 1 shows a situation in which the enclosed area is used in a three-shift operation 6 days a week (here: Monday to Saturday).
- a "utilization in three-shift operation” is to be understood as meaning a semi-continuous operation that is interrupted in the embodiment shown in FIG. 1 only on Sunday.
- the oxygen concentration in the room atmosphere of the enclosed area is kept within the control range between the upper and lower threshold values, the gas separation system is switched on and off as required, that is, operated discontinuously.
- the gas separation system of the oxygen reduction system is continuously operated in an operating mode in which at the outlet of Gasseparations- system per unit time within a predetermined or definable range lying amount of an oxygen-reduced gas mixture is continuously provided, this amount provided per unit time is greater than 0 liters per hour.
- this amount provided per unit time is greater than 0 liters per hour.
- FIG. 2 shows the time evolution of the oxygen concentration in the room atmosphere of an enclosed area for which the oxygen reduction system according to the invention has been designed and configured. It This is an enclosed area (for example, a warehouse) used in three shifts 6 days a week.
- an enclosed area for example, a warehouse
- the oxygen reduction system has a gas separation system, which is designed and designed taking into account a feed-dependent air exchange rate and a feed-independent air exchange rate over the course of the week.
- the feed-dependent air exchange rate during the course of the week takes into account the fresh air intake by feeding and / or inspection of the enclosed area.
- the total fresh air entry is indicated during the week, namely for the case example shown in FIG. 2.
- the total fresh air intake is composed of the feed-dependent air exchange rate on the one hand and the feed-independent air change rate at an average wind speed of 3 m / s.
- Table 2 Total fresh air intake during the week [m 3 / h]
- the time profile of the nitrogen requirement is also in the timing diagram of FIG. 2 drawn. It can be seen in particular that on Sunday (rest day) the nitrogen requirement drops to a relatively low value of 144 m 3 / h. This reduced nitrogen requirement results from the reduced air exchange rate on Sunday, as on Sunday the air exchange rate is determined by the feed-independent air exchange rate (the feed-dependent air exchange rate is negligible on the day of rest, since no loading and / or inspection of the enclosed area is provided). From Monday, however, the feed-dependent air exchange rate is significantly increased, as at the beginning of a working week or in the working week increased pallet movement and thus loading takes place. Accordingly, the demand for nitrogen will increase accordingly from Monday.
- the gas separation system belonging to the oxygen reduction system is operated continuously, in which context in particular also means operation on Sunday (rest day).
- the operating mode of the gas separation system is selected such that an amount of an oxygen-reduced gas mixture is continuously provided at the outlet of the gas separation system per unit time so that the oxygen concentration in the room atmosphere of the enclosed area in the entire week cycle lies in a range between the predetermined, reduced operating concentration and a predetermined or definable lower limit concentration.
- the continuous operation of the gas separation system establishes a calculated nitrogen buffer in the enclosed area that is used for a subsequent period of time with increased nitrogen demand.
- the preset, reduced operating concentration is 15% by volume and the predetermined or definable lower limit concentration is 14.6% by volume.
- the gas separation system of the oxygen reduction plant is operated continuously such that 526 m 3 of the oxygen-reduced gas mixture is continuously provided per hour at the outlet of the gas separation system.
- This operating mode of the gas separation system ensures that over the week cycle the oxygen concentration in the room atmosphere of the enclosed area is always below the predetermined, reduced operating concentration of 15% by volume.
- the gas separation system is designed for a delivery capacity of over 1,000 m 3 / h.
- FIG. 3 describes another exemplary embodiment of the present invention.
- the mode of operation of an oxygen reduction system is shown here, which is designed and configured for an enclosed area (warehouse), which is used in two shifts 6 days a week.
- the Sunday a rest day.
- Table 5 Total fresh air entry during the week [m 3 / h]
- the time profile of the nitrogen requirement is also shown in the timing diagram of FIG. 3 drawn.
- the timing diagrams of the case examples according to FIG. 2 and FIG. 3 show that in a continuous operation of the gas separation system of the oxygen reduction system per unit time such a sufficient amount of an oxygen-reduced gas mixture (continuously) is provided that the oxygen concentration in the room atmosphere of the enclosed area always below the predetermined, reduced operating concentration and a predetermined or definable lower limit concentration.
- the predetermined operating concentration is 15% by volume
- the predetermined or definable lower limit concentration is at most 1% by volume of oxygen and preferably at most 0.5% by volume of oxygen below that of the predetermined, reduced Operating concentration corresponding to the oxygen content.
- the timing diagrams according to FIG. 2 and 3 that the total air exchange rate of the enclosed area varies cyclically with respect to time (here: in the weekly cycle), each time cycle being divided into several consecutive time periods, and for each time period a mean total air exchange rate of the enclosed area assumes the appropriate value.
- the respective duration of the time periods of the time cycle and the respective average total air exchange rate for each time period then play a role.
- the feed-dependent air exchange rate at least on the weekdays from Monday to Saturday higher compared to the situation in the case of Example. 3.
- the gas separation system needs to provide a larger amount of an oxygen displacing gas mixture (nitrogen) per unit time as compared to the gas separation system described in the case of FIG. 3 is used.
- the invention is not limited to those described with reference to the timing diagrams of FIG. 2 and FIG. 3 described case studies limited.
- the solution according to the invention is generally suitable for an enclosed area whose total air exchange rate varies cyclically with time, each time cycle being divided into several consecutive time periods, and for each time period a mean total air exchange rate of the enclosed area assuming a corresponding value ,
- the average air exchange rate of the enclosed area is within a first value range
- the average air exchange rate of enclosed area is within at least a second range of values, wherein the mean value of the at least one second range of values is greater than the mean value of the first range of values.
- the gas separation system of the oxygen reduction system be designed to take into account the time duration of the first and the at least one second time periods and the average total air exchange rate of the enclosed area during the first and the at least one second time periods
- the oxygen concentration in the room atmosphere of the enclosed area is always in a range between the preset operation concentration and the predetermined or definable lower limit concentration.
- an average wind speed of a maximum of 3.0 m / s is taken into account. This condition may not always exist in reality. In particular, it can not be ruled out that significantly higher wind speeds will be present at least temporarily.
- the gas separation system can be operated in at least two different operating modes is.
- the gas separation system is operated starting from its standard operating mode (first operating mode) in its second operating mode, when the average total air exchange rate of the enclosed area increases in particular in an unpredictable manner and in particular in an uncyclical manner.
- the amount of an oxygen-reduced gas mixture continuously provided per unit time at the outlet of the gas separation system is increased correspondingly to a reference value of a residual oxygen concentration.
- the specific power of the gas separation system is lower than the specific power of the gas separation system in the second operation mode.
- “specific performance of the gas separation system” (at a reference temperature of, for example, 20 ° C) is the specific energy demand of the gas separation system to provide a volume unit of the oxygen-reduced gas mixture (relative to a reference level of residual oxygen concentration).
- the gas reduction system of the oxygen reduction system is designed to be operated either in a VPSA mode or in a PSA mode, wherein the first operating mode of the gas separation system corresponds to the VPSA mode and the second operating mode of the gas separation system PSA mode corresponds.
- a gas separation system operating in a VPSA mode is generally a vacuum pressure swing adsorption (VPSA) system for providing nitrogen-impinged air.
- VPSA vacuum pressure swing adsorption
- such a VPSA system is used in the oxygen reduction system as a gas separation system, which if necessary, in particular if the average total air exchange rate of the enclosed area increases in an unpredictable and / or non-cyclical manner PSA mode is operated.
- PSA stands for “pressure swing adsorption", which is commonly referred to as “pressure swing adsorption”.
- an initial gas mixture which comprises oxygen, nitrogen and optionally further components
- the initial gas mixture provided is suitably compressed and in the gas separation system at least part of the oxygen contained in the compressed initial gas mixture is separated, so that a nitrogen-enriched gas mixture is provided at the outlet of the gas separation system.
- This nitrogen-enriched gas mixture at the outlet of the gas separation system corresponds to the oxygen-reduced gas mixture, which is continuously introduced into the atmosphere of the enclosed area.
- the degree of compression of the initial gas mixture by the compressor system is increased when the gas separation system has to be switched from the first operating mode to the second operating mode due to increased air exchange.
- an increase in compression to up to 25.0 bar is conceivable.
- the invention is not limited to the exemplary values given above.
- the gas separation system is operated in the second operating mode when the oxygen concentration in the enclosed area exceeds a predetermined or definable upper limit value, in particular due to an averaged air exchange rate
- the upper limit oxygen concentration preferably corresponds to an oxygen concentration which is at or above the oxygen concentration corresponding to the predetermined operating concentration.
- the predetermined or definable upper limit value of the oxygen concentration corresponds to an oxygen concentration which is at most 1.0% by volume and preferably at most 0.2% by volume above the oxygen concentration which corresponds to the predetermined operating concentration.
- the gas separation system in the second operating mode in at least two predetermined, different power levels is operable, wherein the at least two power levels differ in that - compared to a first power level - in a second power level the per unit of time of the gas separation system provideable amount of an oxygen-reduced gas mixture is higher, based on a predetermined reference value of a residual oxygen concentration.
- the power stage of the gas-fueling system is preferably automatically selected in the second operating mode.
- inert gas source in particular in the form of a compressed gas storage in which an oxygen-reduced gas mixture or inert gas is stored in compressed form.
- the further inert Gas source is fluidly connected to the enclosed area when the oxygen concentration in the enclosed area exceeds a predetermined or definable upper limit, in particular due to an averaged air exchange rate.
- the pre-defined or definable upper limit preferably corresponds to one
- the predetermined or definable upper limit value preferably corresponds to an oxygen concentration which is at most 1% by volume and preferably at most 0.2% by volume above the oxygen concentration which corresponds to the operating concentration.
- a means for reducing, as needed, a feed-dependent air exchange rate of the enclosed area wherein the feed-dependent air exchange rate takes into account an air exchange caused by openings in the room envelope of the room as required for loading and / or inspection enclosed area.
- This device is designed to preferably automatically reduce the charge-dependent air exchange rate of the enclosed area when the oxygen concentration in the enclosed area exceeds a predetermined or definable upper limit value.
- the predetermined or definable upper limit value preferably corresponds to an oxygen concentration which is at or above the oxygen concentration corresponding to the predetermined operating concentration.
- the gas separation system can also be operated in a third operating mode, in which, compared to the first operating mode, the continuously per-time operating mode Unit at the outlet provided amount of an oxygen-reduced gas mixture - based on a reference value of a residual oxygen concentration - is reduced.
- the specific power of the gas separation system should be higher than the specific power of the gas separation system in the third operating mode.
- this predetermined lower limit value corresponds to an oxygen concentration which is at or above the oxygen concentration which corresponds to the predefinable lower limit concentration or above the predefinable lower limit concentration.
- the gas separation system For operating the gas separation system in the different operating modes, however, it is also conceivable for the gas separation system to have a large number of nitrogen generators which can be operated in parallel, these nitrogen generators being switched on or off as required.
- the present invention particularly relates to a system for maintaining a reduced oxygen content in the room atmosphere of an enclosed area below a predetermined and reduced operating concentration compared to the oxygen concentration of the normal ambient air, the system comprising a continuously operated gas separation system designed such that in a continuous operation of the gas separation system, the oxygen concentration in the room atmosphere of the enclosed area is always in a range between the preset operating concentration and a predetermined or definable lower limit concentration.
- the oxygen reduction system is associated with an enclosed area whose total air exchange rate varies cyclically with time, each time cycle being divided into several consecutive time periods, and wherein for each time period a mean total air exchange rate of the closed area assumes a corresponding value.
- the gas separation system is designed taking into account the respective duration of the time periods and taking into account the respective average total air exchange rates such that in a continuous operation of the gas separation system, the oxygen concentration in the room atmosphere of the enclosed area always in a range between the predetermined operating concentration and the advance fixed or definable lower limit concentration.
- the time cycle is a weekly cycle, wherein continuously during at least a first time period of preferably at least 4 to 48 hours, especially at least 4 to 24 hours, and more preferably at least 6 to 24 hours, the average total air exchange rate of and during the remaining time of the week cycle, the average total air exchange rate of the enclosed area corresponds to a sum, in particular a weighted sum of a feed-dependent air exchange rate and a feed-independent air exchange rate.
- the gas separation system of the oxygen reduction system is designed such that in a continuous operation of the gas separation system, the oxygen concentration in the room atmosphere of the enclosed area during the at least a first time period is reduced such that the oxygen concentration in the room atmosphere of the enclosed during the remaining time of the week cycle Range does not exceed the design concentration.
- the oxygen reduction system is designed so that a nitrogen buffer is built up in the enclosed area during a calculated rest period with a low air exchange rate. This buffer then compensates for the higher air exchange rate during the operating times, so that this compensation does not have to be provided by the oxygen reduction system and this can be operated evenly.
- the invention is not limited to the described case examples, but results from a synopsis of all features disclosed herein.
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Separation By Low-Temperature Treatments (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Ventilation (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
- Devices For Use In Laboratory Experiments (AREA)
- Storage Of Harvested Produce (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
Description
Claims
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MX2017016477A MX379053B (es) | 2015-07-02 | 2016-06-20 | Sistema de reduccion de oxigeno y metodo para configurar un sistema de reduccion de oxigeno. |
| US15/738,621 US10456611B2 (en) | 2015-07-02 | 2016-06-20 | Oxygen reduction system and method for configuring an oxygen reduction system |
| RU2018103669A RU2710630C2 (ru) | 2015-07-02 | 2016-06-20 | Система снижения кислорода и способ конфигурирования системы снижения кислорода |
| CN201680039295.0A CN107847777B (zh) | 2015-07-02 | 2016-06-20 | 氧气降低系统和用于配置氧气降低系统的方法 |
| BR112017028338-7A BR112017028338B1 (pt) | 2015-07-02 | 2016-06-20 | Usina de redução de oxigênio e método para configurar uma usina de redução de oxigênio |
| AU2016288367A AU2016288367B2 (en) | 2015-07-02 | 2016-06-20 | Oxygen reduction plant and method for configuring an oxygen reduction plant |
| CA2990980A CA2990980C (en) | 2015-07-02 | 2016-06-20 | Oxygen reduction system and method for configuring an oxygen reduction system |
| ZA201708465A ZA201708465B (en) | 2015-07-02 | 2017-12-13 | Oxygen reduction system and method for configuring an oxygen reduction system |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP15175014.8A EP3111999B1 (de) | 2015-07-02 | 2015-07-02 | Sauerstoffreduzierungsanlage und verfahren zum auslegen einer sauerstoffreduzierungsanlage |
| EP15175014.8 | 2015-07-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2017001222A1 true WO2017001222A1 (de) | 2017-01-05 |
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ID=53546121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2016/064148 Ceased WO2017001222A1 (de) | 2015-07-02 | 2016-06-20 | Sauerstoffreduzierungsanlage und verfahren zum auslegen einer sauerstoffreduzierungsanlage |
Country Status (15)
| Country | Link |
|---|---|
| US (1) | US10456611B2 (de) |
| EP (1) | EP3111999B1 (de) |
| CN (1) | CN107847777B (de) |
| AU (1) | AU2016288367B2 (de) |
| BR (1) | BR112017028338B1 (de) |
| CA (1) | CA2990980C (de) |
| ES (1) | ES2658472T3 (de) |
| MX (1) | MX379053B (de) |
| NO (1) | NO3111999T3 (de) |
| PL (1) | PL3111999T3 (de) |
| PT (1) | PT3111999T (de) |
| RU (1) | RU2710630C2 (de) |
| TR (1) | TR201802143T4 (de) |
| WO (1) | WO2017001222A1 (de) |
| ZA (1) | ZA201708465B (de) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO345647B1 (en) * | 2019-09-25 | 2021-05-25 | Autostore Tech As | Gas isolated storage system |
| CN113654728B (zh) * | 2021-07-16 | 2023-09-01 | 汕头大学 | 一种基于坐标转换的负压波信号拐点定位方法及系统 |
| CN115382348A (zh) * | 2022-08-26 | 2022-11-25 | 苏州班顺工业气体设备有限公司 | 一种节能型制氮方法 |
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| EP1550481A1 (de) * | 2003-12-29 | 2005-07-06 | Amrona AG | Inertisierungsverfahren zur Minderung des Risikos eines Brandes |
| EP2724754A1 (de) * | 2012-10-29 | 2014-04-30 | Amrona AG | Verfahren und Vorrichtung zum Bestimmen und/oder Überwachen der Luftdichtigkeit eines umschlossenen Raumes |
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| EP1550482B1 (de) * | 2003-12-29 | 2010-04-14 | Amrona AG | Inertisierungsverfahren zum Löschen eines Brandes |
| PL1683548T3 (pl) * | 2005-01-21 | 2013-04-30 | Amrona Ag | Sposób inertyzacji w celu przeciwdziałania pożarom |
| ES2323810T3 (es) * | 2006-10-19 | 2009-07-24 | Amrona Ag | Procedimiento para determinar la hermeticidad al aire de salas cerradas. |
| DK1930048T3 (da) * | 2006-12-08 | 2012-04-10 | Amrona Ag | Fremgangsmåde og anordning til reguleret tilførsel af tilgangsluft |
| US8252090B2 (en) * | 2008-09-25 | 2012-08-28 | On Site Gas Systems, Inc. | Process and apparatus for providing an inert gas to a large volume atmosphere |
| CN101559269B (zh) * | 2009-03-27 | 2012-01-11 | 西安新竹防灾救生设备有限公司 | 一种主动富氮防火装置 |
| EP2462994B1 (de) * | 2010-12-10 | 2013-09-04 | Amrona AG | Inertisierungsverfahren zur Brandverhütung und/oder Feuerlöschung sowie Inertisierungsanlage zur Durchführung des Verfahrens |
| PT2602006T (pt) * | 2011-12-05 | 2017-03-08 | Amrona Ag | Método para extinção de incêndio num compartimento fechado assim como sistema de extinção de incêndio |
| PT2801392T (pt) * | 2013-05-06 | 2016-08-22 | Amrona Ag | Método e sistema de inertização para a redução de oxigénio |
| CN104368105A (zh) * | 2014-11-11 | 2015-02-25 | 闵甦宏 | 一种组合分配式自动气体防火安全系统及其使用方法 |
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- 2015-07-02 TR TR2018/02143T patent/TR201802143T4/tr unknown
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2016
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- 2016-06-20 CN CN201680039295.0A patent/CN107847777B/zh active Active
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| US4378920A (en) * | 1980-07-15 | 1983-04-05 | The Boeing Company | Combustibly inert air supply system and method |
| EP1550481A1 (de) * | 2003-12-29 | 2005-07-06 | Amrona AG | Inertisierungsverfahren zur Minderung des Risikos eines Brandes |
| EP2724754A1 (de) * | 2012-10-29 | 2014-04-30 | Amrona AG | Verfahren und Vorrichtung zum Bestimmen und/oder Überwachen der Luftdichtigkeit eines umschlossenen Raumes |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA201708465B (en) | 2019-11-27 |
| RU2018103669A (ru) | 2019-08-06 |
| BR112017028338B1 (pt) | 2021-11-16 |
| AU2016288367A1 (en) | 2018-02-08 |
| EP3111999A1 (de) | 2017-01-04 |
| NO3111999T3 (de) | 2018-05-05 |
| BR112017028338A2 (pt) | 2018-09-04 |
| ES2658472T3 (es) | 2018-03-12 |
| US10456611B2 (en) | 2019-10-29 |
| CN107847777B (zh) | 2020-05-22 |
| CN107847777A (zh) | 2018-03-27 |
| CA2990980C (en) | 2023-07-04 |
| EP3111999B1 (de) | 2017-12-06 |
| US20180185684A1 (en) | 2018-07-05 |
| RU2710630C2 (ru) | 2019-12-30 |
| AU2016288367B2 (en) | 2020-12-03 |
| RU2018103669A3 (de) | 2019-09-20 |
| MX379053B (es) | 2025-03-10 |
| PT3111999T (pt) | 2018-02-14 |
| TR201802143T4 (tr) | 2018-03-21 |
| CA2990980A1 (en) | 2017-01-05 |
| PL3111999T3 (pl) | 2018-05-30 |
| MX2017016477A (es) | 2018-05-17 |
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