Methods are presented for facilitating dissipation of heat generated by one or more electronic components. Its major application is for drying and warehousing facilities for grains, which use vertical circular silos, bulk warehouses and also other handling processes employed by agricultural properties, cooperatives, agro-industries and similar industrial facilities. The first and second control gates adjacent to the impurity layer interposed therebetween is connected with a common contact section. Sequences may be refined andor combined with other sequences to produce better sequences. During rendering, the graphic subsystem converts the color table.