Ключевые слова: 3d, 3d rendering, background, bar, central, chart, classification, code, color, concept, conservation, consuming, control, convection, convective, device, domestic, economy, efficiency, electrical, electricity, energy, equipment, heat, heating, heating radiator, home, house, household, illustration, index, isolated, knob, metallic, radiator, radiators, regulator, saving, scale, system, technology, thermostat, thermostatic, valve, white,