Housing with directed-flow cooling for computer provides auxiliary airflow for cooling a heat-sensitive component, such as CPU. The unshaped refractory according to the present invention is usefully applicable to lining which contacts slag in a blast furnace or a gasifier. The sharpener housing is attached to the motor assembly, and the grinding wheel assembly is rotatably mounted in the sharpener housing and is rotated by the driven assembly. The electronic property of the layer structure defines an optical property of the structure thereby determining an optical response of the structure to certain incident light. The n-side electrode is provided on the n-type semiconductor layer. The reservoir includes a flow plate defining at least one liquid intake and at least one liquid output port.