耦合潜热的可逆太阳能加热与辐射冷却用于自适应热调控

Passive solar heating and radiative cooling attracted lots of attention in global energy consumption reduction due to their unique electricity-free advantage. However, static single radiation cooling or solar heating would lead to over-cooling or over-heating in cold or hot weather, respectively. How to achieve effective self-adaptive thermoregulation is critical for dynamic thermal management. Hence, in this work, a self-adaptive thermoregulation strategy was designed by coupling latent heat storage or release with reversible solar heating and radiative cooling. A commercial memory alloy could realize self-adaptive thermoregulation at the critical temperature between radiative cooling with high solar reflectance R¯solar = 0.95 and thermal emittance ε¯LWIR = 0.93, and solar heating with high solar absorptance α¯solar = 0.92 and low thermal emittance ε¯IR = 0.08. High thermal conductive phase change material could further improve the thermoregulation performance with a latent heat of ∼1