STEM与日常科技·英语30篇（5）
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STEM Light Read: How Termite Mounds Maintain Constant Internal Temperatures (2026-D022)
STEM轻科普：白蚁丘如何维持恒定内部温度（2026-D022）
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Termite mounds in Africa can stay at 31°C day and night despite outside temperatures swinging from 2°C to 40°C.
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Their porous clay walls act like lungs, drawing in cool air at dawn and expelling warm air at dusk.
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Convection currents rise through central chimneys while fresh air enters via underground tunnels.
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Solar heating warms outer walls, creating pressure differences that drive passive airflow without fans.
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Engineers have modeled these structures to design energy-free building ventilation systems.
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Infrared imaging shows heat flows follow precise architectural symmetry, not random construction.
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The mound’s orientation aligns with seasonal sun paths to optimize thermal regulation year-round.
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Microbial activity inside decomposes wood, generating steady low-level heat that stabilizes core zones.
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Studies confirm colonies collapse if mound geometry is artificially altered, proving form enables function.
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This natural HVAC system operates continuously for decades with zero electricity input.