Abstract: The invention relates to a interchangeable optics module for a laser processing machine as well as a laser processing machine including the optics module, wherein a beam guide is fixed to a support plate, and the beam guide includes a laser input coupling interface on one end that can be connected to a laser output coupling interface allocated to a laser source, and a processing head on the other end.

Abstract: The invention relates to a interchangeable optics module for a laser processing machine as well as a laser processing machine including the optics module, wherein a beam guide is fixed to a support plate, and the beam guide includes a laser input coupling interface on one end that can be connected to a laser output coupling interface allocated to a laser source, and a processing head on the other end.

Abstract: A cooling arrangement for cooling laser gas for a gas laser includes a first cooling circuit having a first cooling assembly and a first heat exchanger for cooling laser gas which flows from a fan to a resonator of the gas laser, and a second cooling circuit which is independent of the first and which has a second cooling assembly and a second heat exchanger for cooling laser gas which flows from the resonator to the fan. The second cooling circuit has at least one additional heat exchanger for additionally cooling the laser gas which flows from the fan to the resonator.

Abstract: A cooling arrangement for cooling laser gas for a gas laser includes a first cooling circuit having a first cooling assembly and a first heat exchanger for cooling laser gas which flows from a fan to a resonator of the gas laser, and a second cooling circuit which is independent of the first and which has a second cooling assembly and a second heat exchanger for cooling laser gas which flows from the resonator to the fan. The second cooling circuit has at least one additional heat exchanger for additionally cooling the laser gas which flows from the fan to the resonator.

Abstract: The invention relates to a fuel cell stack in which, according to the invention, several elements of the fuel cell stack are advantageously sealed by a seal in order to form a continuous operating material channel. The inventive fuel cell stack can be provided with a very compact design, whereby the layer thickness of an individual fuel cell is, on a regular basis, distinctly less than 1.5 mm and, advantageously, even less than 1.2 mm.

Abstract: A mold assembly for use in a glassware manufacturing machine comprising two mold members each including a plurality of cooling passages extending vertically therethrough from a lower end face to an upper end face and at least one twisted metal strip.

Abstract: The invention relates to a fuel cell stack in which, according to the invention, several elements of the fuel cell stack are advantageously sealed by a seal in order to form a continuous operating material channel. The inventive fuel cell stack can be provided with a very compact design, whereby the layer thickness of an individual fuel cell is, on a regular basis, distinctly less than 1.5 mm and, advantageously, even less than 1.2 mm.

Abstract: The invention relates to a device for producing and simulating two-phase flows. The device is at least partially transparent, thereby allowing observation of the interior of the device. Two-phase flows, such as occur for example in fuel cells, heat exchangers or other chemical or electrochemical reactors can be easily simulated if such a device forms part of a fuel cell, a heat exchanger or another reactor. The invention further relates to a method for producing and simulating two-phase flows in an electrochemical or chemical reactor, such as fuel cells, comprising the following steps: introducing a gas-emitting solution into an at least partially transparent device that comprises means for producing two-phase flows, and producing and recording the two-phase flow.

Abstract: The invention relates to a bipolar plate for application in a fuel cell, comprising a channel forming structure. The bipolar plate further comprises, at least partly, a porous region, which borders a formed channel. According to the invention, in a fuel cell with the above bipolar plate, an improved distribution of the operating material under differing load conditions (high and low throughflow) with reduced pressure loss is made possible by means of the combination of channels and open pores within the porous region. The above regularly leads to an improved efficiency for the fuel cell.