DE1231871B - Method and device for ventilation of rooms - Google Patents
Method and device for ventilation of roomsInfo
- Publication number
- DE1231871B DE1231871B DEA39426A DEA0039426A DE1231871B DE 1231871 B DE1231871 B DE 1231871B DE A39426 A DEA39426 A DE A39426A DE A0039426 A DEA0039426 A DE A0039426A DE 1231871 B DE1231871 B DE 1231871B
- Authority
- DE
- Germany
- Prior art keywords
- temperature
- heat exchange
- heat exchanger
- ventilation
- heat
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/01—Control of temperature without auxiliary power
- G05D23/12—Control of temperature without auxiliary power with sensing element responsive to pressure or volume changes in a confined fluid
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Central Air Conditioning (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Greenhouses (AREA)
Description
Verfahren und Vorrichtung zur Belüftung von Räumen Die Erfindung bezieht sich auf ein Verfahren und eine Vorrichtung zur Belüftung von Räumen unter Verwendung von Wärmetauschern, bei welchem entweder je nach Temperaturbedarf in den Räumen den Wärmetauschern wahlweise eines von zwei Wärmetauschmitteln mit verschiedenen Temperaturpegeln zugeführt oder die Luftzufuhr zeitweilig abgeschaltet wird.Method and device for ventilation of rooms The invention relates refers to a method and apparatus using for ventilation of rooms of heat exchangers, in which either depending on the temperature requirement in the rooms the heat exchangers optionally one of two heat exchange media with different Temperature levels are supplied or the air supply is temporarily switched off.
Ist der Temperaturbedarf von der Temperatur der dem Wärmetauscher zuzuführenden Belüftungsluft nicht sehr verschieden, was beispielsweise der Fall ist, wenn die Belüftungsluft im Sommer gekühlt werden soll, da bei zu niedriger Temperatur des Kühlmediums eine Kondensation im Wärmetauscher eintreten würde, muß die Wärmetauschfläche für eine gegebene Menge des Wärmetauschmittels möglichst groß sein. Wenn man, was immer mehr üblich wird, denselben Wärmetauscher auch zum Beheizen der Belüftungsluft verwenden will, so muß in der Regel die Menge des heißen Tauschmittels erheblich kleiner als diejenige des erforderlichen kalten Tauschmittels sein, die im Sommer zur Kühlung notwendig ist, falls eine überschüssige Kapazität vermieden werden soll, oder aber die Temperatur der Belüftungsluft begrenzt werden. Da beide Möglichkeiten komplizierte Einrichtungen erfordern sowie eine Abweichung vom Idealwert hinsichtlich der Menge und der Temperatur des Wärmetauschmittels sowie auch eine Abweichung von der erwünschten Kapazität zur Folge haben, liegt der Erfindung die Aufgabe zugrunde, diese Nachteile zu vermeiden.The temperature requirement depends on the temperature of the heat exchanger the ventilation air to be supplied is not very different, which is the case, for example is when the ventilation air is to be cooled in summer because it is too low Temperature of the cooling medium condensation would occur in the heat exchanger, must the heat exchange surface for a given amount of the heat exchange medium is as large as possible be. If, as is becoming more and more common, the same heat exchanger is also used for heating who wants to use ventilation air, the amount of hot medium of exchange must as a rule be considerably smaller than that of the required cold medium of exchange that is necessary for cooling in summer if excess capacity is avoided or the temperature of the ventilation air should be limited. Because both Possibilities require complicated facilities and a deviation from the ideal value in terms of the amount and temperature of the heat exchange medium as well as one Deviation from the desired capacity result, the invention is the Task is based on avoiding these disadvantages.
Bei nach dem Ejektorprinzip arbeitenden Raumklimatisierungsgeräten läßt sich wegen des kräftigen Luftstromes durch dessen Wärmetauscher ein guter Wärmeübergang zwischen der Wärmetauschfläche und der Belüftungsluft erzielen. Wird jedoch die Belüftungsanlage über Nacht abgeschaltet, um die Betriebskosten zu senken, so hört dieser kräftige Luftstrom auf, so daß der Wärmetausch zwischen der Luft und dem Wärmetauschmittel ganz erheblich verschlechtert wird. Diesem Nachteil kann man durch gleichzeitige Temperaturerhöhung des Tauschmittels begegnen. Dadurch ergibt sich jedoch die zusätzliche Schwierigkeit einer zufriedenstellenden Wärmeversorgung für den Raum. Ein weiteres Ziel der Erfindung ist daher die Beseitigung auch dieser Schwierigkeit. Diese Ziele werden auf überraschend einfache Weise erfindungsgemäß dadurch erreicht, daß das jeweils zum Zirkulieren gebrachte Wärme- ; tauschmittel nur durch einen Teil des Wärmetauschers hindurchgeführt wird, wenn es eine ungefähr dem einen Temperaturpegel entsprechende Temperatur hat oder Ventilationsluft zugeführt wird, und andererseits durch den gesamten Wärmetauscher hindurchgeführt wird, wenn es eine ungefähr dem anderen Temperaturpegel entsprechende Temperatur hat oder keine Ventilationsluft zugeführt wird.In room air conditioning units that work according to the ejector principle a good heat transfer can be achieved because of the strong air flow through its heat exchanger between the heat exchange surface and the ventilation air. However, if the Ventilation system shut down overnight to reduce operating costs, so hears this powerful air flow on, so that the heat exchange between the air and the Heat exchange medium is deteriorated quite considerably. You can get through this disadvantage encounter simultaneous increase in temperature of the medium of exchange. This results in however, the added difficulty of a satisfactory heat supply for the room. Another object of the invention is therefore to eliminate these too Difficulty. These goals are achieved according to the invention in a surprisingly simple manner achieved in that the heat each brought to circulate; medium of exchange is only passed through part of the heat exchanger if there is any has a temperature corresponding to a temperature level or is supplied with ventilation air is, and on the other hand is passed through the entire heat exchanger when it has a temperature approximately equal to the other temperature level or none Ventilation air is supplied.
Zur Durchführung des Verfahrens nach der Erfindung eignet sich zweckmäßig ein Umschaltventil, das durch die Steuerwirkung eines impulsgebenden, die Temperatur des Wärmetauschmittels abtastenden Elements bzw. in Abhängigkeit von der Zufuhr von Ventilationsluft derart automatisch einstellbar ist, daß das jeweils zirkulierende Wärmetauschmittel nur einen Teil des Wärmetauschers durchströmt.It is expedient to carry out the method according to the invention a switching valve, which by the control effect of a pulsing, the temperature of the element scanning the heat exchange medium or as a function of the supply of ventilation air is automatically adjustable in such a way that the respectively circulating Heat exchange medium flows through only part of the heat exchanger.
Weitere Einzelheiten der Erfindung ergeben sich aus der folgenden Beschreibung eines in der Zeichnung schematisch dargestellten Ausführungsbeispiels eines Wärmetauschers zur Durchführung des Verfahrens nach der Erfindung.Further details of the invention emerge from the following Description of an exemplary embodiment shown schematically in the drawing a heat exchanger for carrying out the method according to the invention.
Der dargestellte Wärmetauscher besteht aus einer Rohrschlange 3 mit einem Einlaß 1 und einem Auslaß 2. In einer der Windungen der Schlange ist ein Dreiwegeventil4 angeordnet, welches mit den hinteren Windungen über eine Nebenleitung 5 verbunden ist. Stellt man. das Ventil 4 auf geraden Durchfluß ein, so zirkuliert das Wärmetauschmittel durch den gesamten Wärmetauscher, während die zweite Ventilstellung nur eine Zirkulation des Wärmetauschmittels von der ersten Windung über die Nebenleitung zur letzten Windung des Wärmetauschers gestattet. Dabei wird nur ein geringer Teil der Gesamtlänge der Rohrschlange durchflossen.The heat exchanger shown consists of a pipe coil 3 with an inlet 1 and an outlet 2. A three-way valve 4 is arranged in one of the coils of the coil and is connected to the rear coils via a secondary line 5. If you ask. the valve 4 on straight flow, the heat exchange medium circulates through the entire heat exchanger, while the second valve position only allows a circulation of the heat exchange medium from the first turn via the secondary line to the last turn of the heat exchanger. Only a small part of the total length of the coil is flowed through.
Bei dem gezeigten Ausführungsbeispiel arbeitet das Dreiwegeventil automatisch und ist mit einem Steuerrohr 6 versehen, das seinerseits von dem Temperaturfühler 7 in der Einlaßleitung des Wärmetauschers betätigt wird.In the embodiment shown, the three-way valve works automatic and is provided with a control tube 6, which in turn is from the temperature sensor 7 is actuated in the inlet pipe of the heat exchanger.
Claims (2)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE81961 | 1961-01-27 | ||
US171930A US3166121A (en) | 1961-01-27 | 1962-02-08 | Space heat exchange unit |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1231871B true DE1231871B (en) | 1967-01-05 |
Family
ID=26654185
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEA39426A Pending DE1231871B (en) | 1961-01-27 | 1962-01-23 | Method and device for ventilation of rooms |
Country Status (6)
Country | Link |
---|---|
US (1) | US3166121A (en) |
CH (1) | CH378495A (en) |
DE (1) | DE1231871B (en) |
FR (1) | FR1312802A (en) |
GB (1) | GB998025A (en) |
NL (1) | NL121460C (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3255818A (en) * | 1964-03-09 | 1966-06-14 | Gen Motors Corp | Involute plate heat exchanger |
GB2208922B (en) * | 1987-08-22 | 1992-04-01 | Rli Byggdata Ab | Temperature control of buildings |
US5212965A (en) * | 1991-09-23 | 1993-05-25 | Chander Datta | Evaporator with integral liquid sub-cooling and refrigeration system therefor |
US9875471B1 (en) | 2014-09-26 | 2018-01-23 | Square, Inc. | Appointment and payment handling |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB284965A (en) * | 1927-10-14 | 1928-02-09 | Carrier Engineering Co Ltd | Improvements in and relating to the ventilation of enclosures |
US2581744A (en) * | 1949-06-02 | 1952-01-08 | William G Zimmerman | Heating and cooling air conditioning system |
GB843880A (en) * | 1957-05-02 | 1960-08-10 | Carrier Engineering Co Ltd | Improvements in or relating to air-conditioning systems |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2337789A (en) * | 1941-06-07 | 1943-12-28 | Westinghouse Air Brake Co | Cooling device |
US2357706A (en) * | 1942-06-29 | 1944-09-05 | Rca Corp | Heating and cooling system |
US2739792A (en) * | 1952-11-18 | 1956-03-27 | York Corp | Air conditioning systems using heat exchangers local to the conditioned space |
-
0
- NL NL121460D patent/NL121460C/xx active
-
1962
- 1962-01-23 DE DEA39426A patent/DE1231871B/en active Pending
- 1962-01-24 GB GB2695/62A patent/GB998025A/en not_active Expired
- 1962-01-26 CH CH99362A patent/CH378495A/en unknown
- 1962-01-26 FR FR886051A patent/FR1312802A/en not_active Expired
- 1962-02-08 US US171930A patent/US3166121A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB284965A (en) * | 1927-10-14 | 1928-02-09 | Carrier Engineering Co Ltd | Improvements in and relating to the ventilation of enclosures |
US2581744A (en) * | 1949-06-02 | 1952-01-08 | William G Zimmerman | Heating and cooling air conditioning system |
GB843880A (en) * | 1957-05-02 | 1960-08-10 | Carrier Engineering Co Ltd | Improvements in or relating to air-conditioning systems |
Also Published As
Publication number | Publication date |
---|---|
US3166121A (en) | 1965-01-19 |
FR1312802A (en) | 1962-12-21 |
CH378495A (en) | 1964-06-15 |
NL121460C (en) | |
GB998025A (en) | 1965-07-14 |
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