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Asis displayed in the flow chart, the principles of insulation in cool and warmclimate respectively differ to a large extent.
As to the situation of cool climate, we adopt the high-angled roof in orderto be nearly parallel with the direction of the sun so that the directexposition to the heat of sun is lessened as much as we can. By this, thetemperature of the material won’t fluctuate within a large range. Meanwhile,thermal building material could enhance the heat storage insulation, preventingoutflow, thus reduction of heat.
Adversely, in warm climate, reflective building material is indispensablewith overhands for shade. The direction of the roof is almost vertical to thedirection of the sun to lead to external insulation reflection. By this,ventilation would result in the removal of heat storage rather thanreduction.
Through the different working principles of ventilation, we are fascinatedby the masterpieces of modern science and technology.