Abstract:
Die Erfindung betrifft ein Tragluftdach für einen Fermentationsbehälter einer Biogasanlage, welches mindestens zwei auf einem Silagebehälter möglichst gasdicht befestigte vertikal übereinander liegende Folien beinhaltet, von denen mindestens eine als äußere Schutzfolie zum Schutz vor mechanischer Beschädigung mindestens einer gasdichten inneren Biogasfolie dient, wobei in den Innenraum zwischen Schutzfolie und Biogasfolie Tragluft über ein Luftgebläse einführbar ist, welche die Schutzfolie stützt und von der Biogasfolie auf Abstand halten kann und innerhalb des mit Tragluft befüllbaren Innenraumes, zwischen Schutzfolie und Biogasfolie, mindestens ein, bevorzugt eine Vielzahl von Abstandshaltern vorgesehen ist/sind.
Abstract:
The invention relates to a pressure vessel (10) for gases, in particular helium, which is characterized in that the pressure vessel has an outer casing having pressure resistance up to an internal gas pressure of at least 10 bar, in that the outer casing of the pressure vessel has at least one highly diffusion-resistant barrier layer having a leak rate for helium at an internal gas pressure of 10 bar and room temperature of preferably less than 10-2 mbar·l/s, and in that the vessel has an accommodating volume for gas at atmospheric pressure of at least 25 liters. The outer casing of the pressure vessel can comprise at least one barrier layer made of a flexible polymer film having a high barrier function or ultra barrier function or at least one highly gas-tight flexible barrier layer made of EVOH. The vessel can be bag-like or, in particular at higher pressures, inherently rigid. High-strength plastics made of fiber granular materials, for example, can be used to produce the layer, which guarantees the high pressure resistance. Seams (12) can be provided, for example in the lateral edge areas, in order to reinforce and stabilize the pressure vessel. The pressure vessel (10) according to the invention can have a ball valve (11) as a closing element in order to remove the gas.
Abstract:
A walking assistance device, for example, a walking cane, a walking crutch, or walker includes a gas storage vessel for providing an ambulatory supply of medicinal gas for a user of the device. The gas storage vessel is formed from a plurality of polymeric hollow chamber having either an ellipsoidal or spherical shape and interconnected by a plurality of relatively narrow conduit sections disposed between consecutive ones of the chambers. The gas storage vessel includes a reinforcing filament wrapped around the interconnected chambers and interconnecting conduit sections to limit radial expansion of the chambers and conduit sections when filled with a fluid under pressure. The container system further includes a fluid transfer control system attached to the gas storage vessel for controlling fluid flow into and out of the gas storage vessel and a gas delivery mechanism for delivering gas from the gas storage vessel to a user in a breathable manner.
Abstract:
A resilient multi-layer container is configured to receive a quantity of hyperpolarized noble fluid such as gas and includes a wall with at least two layers, a first layer with a surface which minimizes contact-induced spin-relaxation and a first or second layer which is substantially impermeable to oxygen. The container is especially suitable for collecting and transporting 3He. The resilient container can be formed of material layers which are concurrently responsive to pressure such as polymers, deuterated polymers, or metallic films. The container can include a capillary stem and/or a port or valve isolation means to inhibit the flow of gas from the main volume of the container during transport. The resilient container can be configured to directly deliver the hyperpolarized noble gas to a target interface by deflating or collapsing the inflated resilient container. In addition, single layer resilient containers with T¿1?'s of above 4 hours for ?129¿Xe and above 6 hours for 3He include materials with selected relaxivity values. In addition, a bag with a port fitting or valve member and one or more of a capillary stem and port isolation means is configured to minimize the depolarizing effect of the container valve or fitting(s). Also disclosed is a method for determining the gas solubility in an unknown polymer or liquid using the measured relaxation time of a hyperpolarized gas.
Abstract:
The present invention relates to covering for a gas storage (100). The covering comprises an interior membrane (102) which is mountable to the gas storage (100) for at least partially enveloping an inner volume (Vs,i) of the storage (100) for storing industrial gas. Further, the covering comprises an exterior membrane (101) which is mountable to the gas storage (100), wherein the exterior membrane (101) covers the interior membrane (101) in such a way that an outer volume (Vs,o) for storing support gas is generated between the exterior membrane (101) and the interior membrane (102). The exterior membrane (101) comprises a material with an ultimate elongation of more than 100%.
Abstract:
Disclosed is a gas accumulator comprising an outer and an inner diaphragm (1, 2). The inner diaphragm (2) partly surrounds a variable gas accumulator chamber (20). A diaphragm opening (40) for a device for measuring the fill level (41) of the gas accumulator chamber is provided within the outer diaphragm (1). Said device encompasses a level sensor (42) that is attached to a sensor holder (59) which is connected to the edge of the diaphragm opening (40) by means of a connecting element (56'). The connecting element (56') is formed by a tube (46), an end opening of which is connected to the edge of the diaphragm opening (40). The sensor holder (59) comprising the level sensor (42) is mounted on the other end opening of the tube (46) such that the tube (46) is fastened over the diaphragm opening (40) and the level sensor (42) is thus placed at a distance from the diaphragm opening (40) by using the supporting pressure prevailing between the inner diaphragm (2) and the outer diaphragm (1).