Abstract: An apparatus for preheating a batch (12) of glass cullet which is preferably enriched with raw materials for glass production, comprising a bunker (14) preferably having flow ducts for the passage of warm (off)gas. To discharge the preheated batch of glass cullet from the bunker, the apparatus has one or more discharge worms (26), by way of which the batch of glass cullet can be conveyed to at least one outflow opening (28) in the base region of the bunker (14).

Abstract: An apparatus for preheating a batch (12) of glass cullet which is preferably enriched with raw materials for glass production, comprising a bunker (14) preferably having flow ducts for the passage of warm (off)gas. To discharge the preheated batch of glass cullet from the bunker, the apparatus has one or more discharge worms (26), by way of which the batch of glass cullet can be conveyed to at least one outflow opening (28) in the base region of the bunker (14).

Abstract: An apparatus for preheating a batch (12) of glass cullet which is preferably enriched with raw materials for glass production, comprising a bunker (14) and flow ducts (22) formed therein, wherein the bunker (14) comprises a plurality of flow ducts (22) which are arranged vertically, and if appropriate offset, one above another and extend at an angle in relation to the vertical, in particular horizontally, wherein each flow duct (22) is composed of a profiled section (34) for forming an upper half thereof and also a heap of the batch (12) of glass cullet which is formed underneath the profiled section and forms the lower half of the flow duct (22), and wherein the profiled section has at least two limbs (36a, b) which laterally delimit the space between them.

Abstract: A device and method for cooling an internal combustion engine is disclosed in which a simple control circuit constructed of relatively inexpensive components enables the rotational speed of an electric motor employed in the cooling device to be controlled in adaptation to various temperature levels of a cooling circuit. The control circuit includes a power semiconductor which is used to drive the electric motor in certain speed ranges associated with predetermined temperature levels. The control circuit also incorporates a bypass circuit that permits the electrical motor to be driven in particular speed ranges without the use of the power semiconductor. Thus, the electric motor can be driven at one hundred percent of its speed capacity by eliminating a voltage drop associated with the power semiconductor.