Abstract:
L'invention concerne un système de chauffage d'un mélange gazeux pour étuve de chauffage d'un matériau, comprenant : - une chambre de combustion, - un réseau de circulation d'un mélange gazeux, et - un dispositif de combustion comprenant un brûleur, un premier dispositif d'injection d'au moins une première composition gazeuse au niveau du brûleur, ladite première composition gazeuse étant un combustible, un premier et un deuxième dispositifs d'injection d'une deuxième composition gazeuse au niveau du brûleur, ladite deuxième composition gazeuse étant un comburant, un dispositif de régulation du débit desdites première et deuxième compositions gazeuses, et un dispositif d'allumage du brûleur, le système étant caractérisé en ce qu'il comprend un troisième dispositif d'injection contrôlée d'une troisième composition gazeuse de façon à diminuer la quantité de gaz inflammables et/ou toxiques dans le mélange gazeux présent dans la chambre de combustion
Abstract:
A method for producing mineral wool products with low formaldehyde emissions, comprises: (a) preparing an aqueous solution comprising resorcinol or a derivative thereof; (b) transporting a phenol-formaldehyde resin or a phenol-formaldehyde-urea resin to a binder application station; (c) metering the aqueous solution continuously to said resin while it is transported to the binder application station, thereby forming a binder solution; (d) applying the binder solution to mineral fibers; and (e) curing the binder solution by applying heat, thereby forming the mineral wool product.
Abstract:
A surface material constructed by a fiber structure having a single fiber fineness of from 0.0001 to 1 dtex, a thickness of from 0.10 to 5 mm and a weave density of from 50 to 500 g/m2, and provided on a surface of a body in order to convert at least a part of a surface wave, of a body surface, generated by a vibration into a vibration of the fiber structure, and a method of suppressing an influence of the surface wave by using the surface material. By providing the surface material on each member subjected to vibration, it is possible to effectively suppress a modulation of the vibration due to the surface wave and greatly influencing a human audition, and to prevent a tone quality and a picture quality from deteriorating.
Abstract:
A deposition nozzle has a housing, an inlet into the housing arranged to receive a solution carrying randomly oriented fibers, an orientation component within the housing, the orientation component positioned to receive the solution from the inlet and operate to produce aligned fibers in a predetermined, single direction, and an outlet on the housing arranged to receive the aligned fibers and deposit them on a substrate. A system includes a porous substrate, a deposition nozzle, a reservoir of randomly oriented fibers in solution connected to the deposition nozzle, the deposition nozzle position adjacent the porous substrate and connected to the reservoir, the nozzle to receive the randomly oriented fibers and output aligned fibers, and a vacuum connected to the porous substrate to remove fluid from the porous substrate as the deposition nozzle deposits the aligned fibers on the porous substrate to produce a fiber pre-form having aligned fibers. A method includes providing a reservoir of randomly oriented fibers in a solution, dispensing the solution of randomly oriented fibers through a nozzle having an orientation component onto a porous substrate as a solution of aligned fibers, and immobilizing the fibers to form a fiber pre-form.