摘要:
Die vorliegende Erfindung betrifft ein Absorberrohr insbesondere für Sonnenkollektoren in solarthermischen Kraftwerken mit mindestens einem Kollektorspiegel (12), umfassend ein Metallrohr (22) zum Durchleiten und Erhitzen eines Wärmeträgermediums, ein das Metallrohr (22) umgebendes Hüllrohr (24) zum Ausbilden eines evakuierbaren Ringraumes (26), eine zwischen dem Hüllrohr (24) und dem Metallrohr (22) verlaufende Wandung (34) zum Abdichten des Ringraumes (26), und eine Haltevorrichtung (32) für ein Gettermaterial (46) oder einen mit Gettermaterial (46) oder Schutzgas gefüllten Behälter (48), mit einem Aufnahmeabschnitt (44) zum Aufnehmen des Gettermaterials (46) oder des Behälters (48). Die Haltevorrichtung (32) ist an der Wandung (34) befestigt. Ferner betrifft die Erfindung ein Absorberrohr mit mindestens einem Kollektorspiegel (12), wobei das Absorberrohr ein Metallrohr (22) zum Durchleiten und Erhitzen eines Wärmeträgermediums, ein das Metallrohr (22) umgebendes Hüllrohr (24) zum Ausbilden eines evakuierbaren Ringraumes (26), und ein im Ringraum (26) angeordnetes Gettermaterials (46) zum Binden von sich im Ringraum (26) befindendem freien Wasserstoff umfasst, wobei ein im Ringraum (26) angeordneter Reflektor (94) zum Reflektieren von Strahlung (14) vorgesehen ist, der ein Gehäuse (90) mit einem Ablageabschnitt (92) zum Befestigen und zum Schützen des Gettermaterials (46) vor der Strahlung (14) aufweist.
摘要:
Getter alloys particularly suitable for hydrogen sorption are described. The getter alloys include a first element consisting of yttrium or a yttrium equivalent mixture, the first element forming at least 30% by atoms of the alloy. A method for removing hydrogen from devices which are sensitive to the presence thereof and hydrogen-sensitive devices which contain the described getter alloys are also described.
摘要:
A solar trough field system according to the invention comprises multiple parabolic reflectors; a thermal receiver tube, center of which coincides with the focus of the parabolic reflectors and which consists of a metal heat receiving pipe (1) and a glass tube (2) which are nested (the glass tube surrounds the metal heat receiving pipe from outside); a ‘vacuum seal and glass tube connector system’ (E) which connects the glass tubes (2) and the thermal heat receiving pipe (1) to each other; a rotating support unit (21), which connects the parabolic panel to the glass tube connector system (E) and provides the thermal receiver tube (1) to stay stationary while the parabolic panel is rotating around it; ‘flexible expansion unit’ (29) located at the end of each parabolic trough unit which provides vacuum seal while the Heat Receiving Pipe (1) is moving due to heat expansion; and a vertical loop (52) located at the discharge side of the parabolic unit, which can be used instead of water separator and which also provides the heat expansion of the Heat Receiving Pipe (103).
摘要:
A solar receiver device includes a metal conduit and a glass container disposed around the metal conduit such that there is a space between the glass container and the conduit. A coating is disposed on the metal conduit and has a composition that includes at least one element from silicon, titanium, aluminum, barium, and samarium.
摘要:
The invention relates to an absorber tube, in particular for solar collectors (10) in solar thermal power plants, having at least one collector mirror (12), comprising a metal tube (22) for carrying and heating a heat transfer medium, a sleeve tube (24) enclosing the metal tube (22) for forming an annular space (26) that can be evacuated, a first container (40) disposed in the annular space (26) and filled with protective gas, wherein the first container (40) comprises an outlet opening (52) closed by a closure material (54), which releases the outlet opening (52) under external actuation for introducing the protective gas into the annular space (26), wherein the external actuation can be applied by an opening unit (67) that can be activated for releasing the outlet openings (52), and an outer ring (37) and a transition element (36) enclosing the metal tube (22) for sealing off the annular space (26). The first container (40) is fixed in the annular space (26) by means of a retaining device (50), wherein the retaining device is disposed on the outer ring (37) and/or on the transition element (36).
摘要:
Improved solutions for integrating hydrogen getter in powder form within hydrogen sensitive devices, and hydrogen sensitive devices employing such improved solutions. The hydrogen getter system (10) comprises a metallic mesh (11) with closed extremities containing material powders.
摘要:
The invention relates to a getter (1), comprising a getter housing (2) and at least one powdery getter material (3), which is enclosed in the getter housing (2), wherein the getter housing (2) is at least partially gas-permeable so that gas located outside of the getter housing (2) can come into contact with the getter material (3). In order to provide an effective getter (1) without the great risk of getter material (3) escaping from the getter (1) during use, according to the invention the getter housing (2) comprises a pipe (4), which has at least one grille in some areas, by means of which the getter material (3) is retained in the pipe (4).
摘要:
A double-sided vacuum thermal solar panel comprising a vacuum-tight envelope capable of withstanding atmospheric pressure when evacuated, the envelope comprising a first and a second glass plate transparent to solar radiation and facing each other, a perimeter frame defining the lateral surface of the envelope, the solar panel comprising at least one first heat absorber, a second heat absorber, a pipe which enters and exits the envelope by passing in between the first and second heat absorber, and a box-like element which surrounds the outer surface of the pipe.
摘要:
In a flat panel solar collector adapted to be evacuable and vacuum-tight, at least one absorber is provided. At least one conduit is provided which is at least partially thermally associated with the at least one absorber. A holding structure is provided comprising a perimetric frame. At least one first transparent wall is provided, the first transparent wall and the holding structure having a overlapping area. At least one side of the first transparent wall comprises at least partially at said overlapping area a metal coating forming at least one metallized area on the transparent wall. A first soft metal ribbon is provided sealing the junction between the first transparent wall and the holding structure and which is soldered to the holding structure and to the metallized area of the first transparent wall.