Abstract:
A vapour compression system (1) comprising a compressor (2), a condenser (3), an expansion device (4) and an evaporator (5) arranged along a refrigerant path is disclosed. The evaporator (5) comprises at least two evaporator paths (5a, 5b, 5c, 5d) arranged fluidly in parallel between the expansion device (4) and the compressor (2). Each evaporator path (5a, 5b, 5c, 5d) is fluidly connected to the compressor (2) via a separate suction line (7a, 7b, 7c), and the suction pressure in each of the suction lines (7a, 7b, 7c) is distinct from the suction pressure in each of the other suction line(s) (7a, 7b, 7c). The separate suction lines (7a, 7b, 7c) allows the evaporator paths (5a, 5b, 5c, 5d) to be operated at different evaporator temperatures and pressures. Thereby a large temperature change of a secondary flow (6) across the evaporator (5) can be obtained while the suction pressure of a part of the mass flow is kept at a high level. The work required by the compressor (2) is reduced and energy is conserved.
Abstract:
The invention relates to a thermal energy storage system comprising at least one thermal reservoir and at least one thermal energy transfer means that, at least at times, are able to transfer thermal energy from at least one first section of the thermal reservoir to at least one second section of the thermal reservoir. The invention also relates to a method changing the energy distribution of a thermal reservoir wherein thermal energy is transferred from at least one first section of the thermal reservoir to at least one second section of the thermal reservoir.
Abstract:
A method of manufacturing a temperature sensor unit comprising the steps of: providing the conductors in the sheath such that in a first zone a space is defined between the sheath and the conductors; providing the second insulating material in liquid form in the space; positioning the sensors in the space such that the conductors are provided closer to the centre of the sheath than the sensors; and soldering and/or welding the set of conductors to the set of terminals. A temperature sensor in which sets of conductors and one or more temperature sensors are arranged inside a sheath and with respect to each other such that the conductors are provided closer to the centre of the sheath than the temperature sensors.
Abstract:
A closed loop heating system (1, 34, 38) comprises at least one closed fluid circuit (14, 15), at least one thermal energy receiving unit (13, 31, 40) and at least one thermal energy releasing unit (5, 6, 8, 11, 36). The closed loop heating system also comprises a heat pump (23), transferring thermal energy from at least one first part (22, 26) of said fluid circuit (14, 15) to at least one second part (24, 29) of said fluid circuit (14, 15).
Abstract:
Die Erfindung betrifft eine Getränkeabgabeeinrichtung und ein Verfahren zur Überwachung einer Getränkeabgabeeinrichtung, wobei ein Getränk über eine Zuleitung (8) zugeführt und über eine Ableitung (9) abgeführt wird. Die Überwachung der Parameter der Getränkeabgabeeinrichtung soll mit geringem Aufwand erfolgen. Dafür ist vorgesehen, mit einem Temperatursensor (10), der an der Zuleitung (8) angeordnet ist, Temperaturwerte eines Getränks beim Eintauchen in eine Kühlflüssigkeit zu bestimmen und diese Werte an eine Recheneinheit zu übermitteln. Einzige Fig.
Abstract:
A superheat sensor (1) for sensing superheat of a fluid flowing in a flow channel (3) is disclosed. The sensor (1) comprises a flexible wall defining an interface between an inner cavity (5) having a charge fluid (6) arranged therein and the flow channel (3). The flexible wall is arranged in the flow channel (3) in thermal contact with the fluid flowing therein, and the flexible wall is adapted to conduct heat between the flow channel (3) and the inner cavity (5). Thereby the temperature of the charge fluid (6) adapts to the temperature of the fluid flowing in the flow channel (3), and the pressure in the inner cavity (5) is determined by this temperature. A first wall part (7, 14) and a second wall part (9, 16) are arranged at a variable distance from each other, said distance being defined by a differential pressure between the pressure of the charge fluid (6) and the pressure of the fluid flowing in the flow channel (3), i.e. depending on the pressure and the temperature of the fluid flowing in the flow channel (3), and thereby the superheat of the fluid. A distance sensor, e.g. comprising a permanent magnet (8) and a Hall sensor (10), measures the distance between the wall parts, and the superheat is calculated from the measured distance. The sensor (1) is suitable for use in a refrigeration system. The sensor (1) is mechanically simple and capable of determining the superheat by measuring only one parameter.
Abstract:
The present invention relates to a method and system to regulate pressure in an object, and is especially suitable for regulating intracranial pressure in people suffering from hydrocephalus. The system includes the measurement of physical parameters other than the pressure to be regulated, especially the present position of the object, such as the inclination.
Abstract:
Es wird eine Ventilanordnung (1) angegeben mit einem Gehäuse (2), das einen Hauptventilsitz (5) zwischen einem Einlass (3) und einem Auslass (4) aufweist, einem mit dem Hauptventilsitz (5) zusammenwirkenden Hauptverschlussstück (6), das einen Durchgangskanal (10) aufweist, einem mit dem Hauptverschlussstück (6) zusammenwirkenden Servokolben (9), einem in Bewegungsrichtung des Hauptverschlussstücks (6) beweg- baren Schieber (12) und einem Betätigungselement (18). Man möchte eine derartige Ventilanordnung mit geringen Kräften betätigen können. Hierzu ist vorgesehen, dass der Schieber (12) einen vom Betätigungselement (18) verschließbaren Hilfskanal (17) aufweist, der bei Anlage des Schiebers (12) am Hauptverschlussstück (6) den Durchgangskanal (10) fortsetzt.
Abstract:
Es wird eine Flüssigkeitsbehandlungsanordnung (1), insbesondere eine Wasserbehandlungsanordnung, angegeben mit mindestens einer Umkehrosmose-Membraneinheit (11), einer Pumpe (14), einer Pumpenantriebseinrichtung (12, 16) und einer Halterung, an der Komponenten der Flüssigkeitsbehandlungsanordnung (1) angeordnet sind. Man möchte eine Flüssigkeitsbehandlungsanordnung universell einsetzbar machen. Hierzu ist vorgesehen, dass die Halterung als Gehäuse (2-5) ausgebildet ist, das Komponenten (11-18) der Flüssigkeitsbehandlungsanordnung (1) in Position hält und umschließt.
Abstract:
The invention provides an elastomer transducer for converting between electrical energy and mechanical energy. The transducer comprises a composite material with a body (2, 4) and a film (3) of an elastomer material, the body comprising at least an electrically conductive portion and an anisotropic body, in the anisotropic body, fibers are arranged in a pattern to provide inferior flexure resistance and an anisotropic compliance to stretch in a first direction.