Abstract:
This invention relates to a heat receiver tube for absorbing solar energy and for transferring absorbed solar energy to a heat transfer fluid, which can be located inside a core tube of the heat receiver tube. The receiver tube comprises a first partial heat receiver tube surface, a second partial heat receiver tube surface and a further partial heat receiver tube surface. The first partial heat receiver tube surface and the further heat receiver tube surface are formed by solar absorptive coatings deposited on partial surfaces of the core tube. The second partial heat receiver tube surface is formed by an emission radiation inhibiting coating for inhibiting an emissivity for infrared radiation. The emission radiation inhibiting coating is deposited on a second core tube surface. The further partial heat receiver tube surface is arranged in a radiation window of the second partial heat receiver tube surface such, that direct sunlight can impinge the further partial heat receiver tube surface. Also provided is a parabolic trough collector with at least one heat receiver tube, which is arranged in a focal line of a parabolic mirror. The first partial heat receiver tube surface and the sunlight reflecting surface of the mirror are arranged face to face, whereas the second and the further partial heat receiver tube surfaces are averted to the reflecting surface of the mirror. The parabolic trough collector is used in a solar power plant for converting solar energy into electrical energy.
Abstract:
The invention relates to a heat receiver tube (1) for absorbing solar energy, wherein the receiver tube (1) comprises a core tube (10) having at least one first partial heat receiver tube surface (11), at least one second partial heat receiver tube surface (12) and at least one further partial heat receiver tube surface (13), wherein the first partial heat receiver tube surface (11) is formed by a first solar energy absorptive coating (111) deposited on a first partial core tube surface (101) of the core tube (10) for absorbing radiation of a first spectrum of the sunlight, wherein the second partial heat receiver tube surface (12) is formed by at least one emission radiation inhibiting coating (14) deposited on a second core tube surface (102) of the core tube (10), wherein the further partial heat receiver tube surface (13) is formed by at least one further solar energy absorptive coating (131) deposited on a further partial core tube surface (103) of the core tube (10) for absorbing radiation (1311) of a further spectrum of the sunlight and wherein the further partial heat receiver tube surface (13) is arranged in a radiation window (1211) of the second partial heat receiver tube surface (12) such that the radiation (1311) can impinge the further partial heat receiver tube surface (13).
Abstract:
A solar thermal interconnection system is provided with at least one parabolic trough collector with at least one parabolic mirror having a sunlight reflecting surface for concentrating sunlight in a focal line of the parabolic mirror; at least one heat pipe with at least one heat pipe working fluid for absorbing solar energy, wherein the heat pipe is located in the focal line of the parabolic mirror; at least one heat absorber system with a heat absorber medium; wherein the heat pipe and the heat absorber system are thermally coupled such that a heat transfer from the heat pipe working fluid to the absorber medium can occur. For instance the heat absorber system comprises a heat receiver tube. The absorber medium is a heat transfer fluid. Moreover a solar thermal power plant for transferring solar energy into electrical energy with at least one solar thermal interconnection system is disclosed, wherein the parabolic trough collector is oriented with its longitudinal alignment in north-south direction. Preferably a plurality of solar thermal interconnection systems is set up.
Abstract:
A system and associated method for laser processing of material specimens comprising a laser mounted to scan onto a track wherein the specimens are forwarded along the track in a forwarding direction, the laser is scanned over said track in a second direction, and the substrates are angled to the track.
Abstract:
A solar thermal interconnection system is provided with at least one solar thermal interconnection system with at least one linear Fresnel mirror collector with at least one linear Fresnel mirror for concentrating sunlight in a focal line of the linear Fresnel mirror; at least one heat pipe with at least one heat pipe working fluid for absorbing solar energy, wherein the heat pipe is located in the focal line of the linear Fresnel mirror: at least one heat absorber system with a heat absorber medium; wherein the heat pipe and the heat absorber system are thermally coupled such that a heat trans¬ fer from the heat pipe working fluid to the absorber medium can occur. For instance the heat absorber system comprises a heat receiver tube. The absorber medium is a heat transfer fluid. Moreover a solar thermal power plant for transferring solar energy into electrical energy with at least one solar thermal interconnection system is disclosed, wherein the Fresnel mirror collector is oriented with its longitudinal alignment in north-south direction. Preferably a plurality of solar thermal interconnection systems is set up.
Abstract:
A solar thermal interconnection system is provided with at least one parabolic trough collector with at least one parabolic mirror (22) having a sunlight reflecting surface for concentrating sunlight in a focal line of the parabolic mirror; at least one heat pipe (12) with at least one heat pipe working fluid for absorbing solar energy, wherein the heat pipe is located in the focal line of the parabolic mirror; at least one heat absorber system with a heat absorber medium; wherein the heat pipe and the heat absorber system are thermally coupled such that a heat transfer from the heat pipe working fluid to the absorber medium can occur.
Abstract:
A puncture system for inserting a needle into a subcutaneous blood vessel comprising: (a) detection means for locating the subcutaneous blood vessel in body tissue; (b) alignment means for aligning needle into the body tissue for insertion into the blood vessel; (c) driving means for driving the needle into the body tissue for insertion into the blood vessel, and (d) means for ensuring the needle is not inserted too far, and a preferred method of inserting a needle into the blood vessel comprising the steps of: attaching a sleeve of a puncture system as described above over a distal limb; locating blood vessel; aligning the needle with the blood vessel in the plane of the skin surface; inserting the needle into the limb at a shallow angle to a depth where needle punctures outer surface of blood vessel, detecting that needle tip is within blood vessel and stopping further insertion.